WO2000063274A1 - Process for producing polyarylate - Google Patents
Process for producing polyarylate Download PDFInfo
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- WO2000063274A1 WO2000063274A1 PCT/JP2000/002282 JP0002282W WO0063274A1 WO 2000063274 A1 WO2000063274 A1 WO 2000063274A1 JP 0002282 W JP0002282 W JP 0002282W WO 0063274 A1 WO0063274 A1 WO 0063274A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/84—Boron, aluminium, gallium, indium, thallium, rare-earth metals, or compounds thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/19—Hydroxy compounds containing aromatic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/83—Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
Definitions
- the present invention relates to a method for producing polyarylate. More specifically, by modifying a part or all of the terminal carboxyl group or terminal hydroxyl group present at the terminal of the polymer with a specific salicylate compound, a high molecular weight compound having excellent color tone and excellent hue stability can be obtained.
- the present invention relates to a method for producing polyarylate.
- Polyarylate is one of engineering plastics.In addition to its mechanical properties and moldability, it has excellent properties such as chemical resistance, impact resistance, and electrical properties. It's being used.
- the method for producing these polyarylates includes an interface (solution) method in which a halide of an aromatic dicarboxylic acid is reacted with an aromatic dihydroxy compound in the presence of a basic compound, and a diaryl ester of an aromatic dicarboxylic acid and an aromatic dicarboxylic acid.
- a method in which a dihydroxy compound is polymerized by adding a phenol compound (aromatic monohydroxy compound) (melting method).
- a dephenol compound (aromatic compound) is prepared from a molten mixture of aromatic dicarboxylic acid, aromatic dihydroxy compound, and diaryl carbonate.
- Various methods are known, such as a method of polymerizing with an aromatic monohydroxy compound (melting method).
- the method of polymerizing a molten mixture of an aromatic dicarboxylic acid, an aromatic dihydroxy compound, and a diaryl carbonate by phenol removal does not require the use of a solvent, and the raw material, a polyester resin, is used. Since diphenyl carbonate, which is a raw material of aromatic polycarbonate, can be used, there is a possibility that it can be produced at low cost, and it is considered promising in the future.
- the polymer when the polymer is polymerized on H3 ⁇ 4 by the melt method, As the temperature increases, the polymer has a characteristic that the melt viscosity is extremely higher than that of other polycondensation polymers such as polyethylene terephthalate and aromatic polycarbonate. An operation such as polymerization had to be performed (by lowering the melt viscosity), causing problems such as coloring.
- Japanese Patent Application Laid-Open No. 4-2888324 discloses that coloring is prevented by reducing the amount of phenol I raw terminal group of polyarylate.
- Japanese Patent Application Laid-Open No. 4-222821 discloses a method for producing a polyarylate useful for molding applications by reducing terminal carboxyl groups and phenol I raw terminal hydroxyl groups.
- Japanese Patent Application Laid-Open No. 3-63417 discloses a method of controlling the terminal group by controlling the molar balance of the raw materials at the time of fusion.
- Japanese Unexamined Patent Publication (Kokai) No. 2-238020 discloses diphenyl carbonate, unsubstituted polyester carbonate oligomer, unsubstituted polyester carbonate polymer, substituted polyaryl carboxylic acid oligomer and substituted polyaryl.
- a method for reducing terminal carboxylic acid groups using an agent selected from the group consisting of carbonate polymers is described.
- Japanese Patent Publication No. 6-99548 discloses a method for producing a polyarylate having a terminal group converted to a benzoate group using phenyl benzoate.
- Japanese Patent Application Laid-Open No. 10-36497 discloses that a specific salicylic acid ester derivative is used when producing a polycapillary component by a melting method, whereby excellent hue and excellent polymerization degree can be obtained. A method for producing the resulting polycarbonate is disclosed.
- An object of the present invention is to provide a method for producing a polyacrylate by polycondensing an aromatic dihydroxy compound and an aromatic ester bond-forming precursor to obtain a polyarylate having excellent color tone and excellent hue stability. It is.
- the terminal carboxyl group and z or the entire or entire sound of the hydroxyl group are subjected to iM and sufficient modification with a decorating agent by the lysoma condensation method, It is possible to produce a high molecular weight polyarylate which is modified, has excellent color tone, and has excellent hue stability.
- the “method of producing a polyarylate by combining an aromatic dihydroxy compound and an aromatic ester bond-forming precursor” includes the diaryl ester of an aromatic dicarboxylic acid and the aromatic dihydroxy compound described above. (Melting method) using a phenol-containing compound (aromatic monohydroxy compound) and a phenol-free compound from a molten mixture of aromatic dicarboxylic acid, aromatic dihydroxy compound, and diaryl carbonate. Needless to say, a method (melt method) of polymerizing with (aromatic monohydroxy compound) is included. Disclosure of the invention
- the present invention relates to a method for producing a polyarylate by fiber-bonding an aromatic dihydroxy compound and an aromatic ester bond-forming precursor, wherein the terminal is modified to use a salicylic acid ester compound having a specific structure, and coloring at the time of melting is performed.
- the sealing of one terminal group of lipoxyl group or hydroxyl group can greatly improve the coloring stability at the time of melting, and the polymer terminal groups can be connected to each other through a specific structural part of the salicylate compound. It has been found that by coupling and increasing the degree of polymerization within a short period of time, it is possible to obtain a polyallylate having a high degree of polymerization and excellent color tone. In the latter case, the amount of carboxyl groups and hydroxyl end groups, which greatly affect the coloring during melting, is also reduced by the coupling, and the coloring stability during melting is also improved. It has become.
- the present invention is as follows.
- R a represents a Echiru group or a methyl group.
- R b is carbon number 1 ⁇
- polyolefins for the polycondensation and Z or terminal modification reactions, and their alkalinity is alkali metal compounds, nitrogen-containing basic compounds, metals of Groups 3, 14 or 15 of the Periodic Table.
- salicylate esterification “Using a compound” means that a salicylic acid ester compound is reacted with a terminal group of a polyarylate to perform “decoration” in the sense of the following.
- the compound represented by the above formula (1) may be a carbonate or a carboxylate depending on the definition of R b .
- Rb is an alkyl group having 1 to 30 carbon atoms or an aryl group having 6 to 30 carbon atoms, it is an ester compound, and Rb is an alkoxy group having 1 to 30 carbon atoms, and 6 to 3 carbon atoms.
- the aryloxy group is 0, the compound is a salicylic acid ester compound containing a carbonate bond.
- the alkyl group having 1 to 30 carbon atoms may be linear, branched, or cyclic, or may contain an unsaturated group.
- examples of such an alkyl group include methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-octyl, n-nonyl, n- Linear alkyl groups such as lauryl group, n-stearyl group, n-docosanyl group, n-heptacosanyl group, and branched forms such as isopropyl group, t-butyl group, 3-hexyldecanyl group and 6-butyltetracosanyl group Alkyl, aryl, butenyl, pentenyl, hexenyl, dodecenyl, oleyl, unsaturated alkyl such as 6-docosenyl, cyclohexyl,
- the alkoxy group having 1 to 30 carbon atoms may be linear, branched, or cyclic, or may contain an unsaturated group.
- alkoxy groups include methoxy, ethoxy, n-propoxy, n-butoxy, n-hexyloxy, n-octyloxy, n-nonyloxy, n-stearyloxy, n- Linear alkoxy groups such as docosanyloxy group, n-hexacosanyloxy group, branched alkoxy groups such as isopropyloxy group and 3-hexyldecanyloxy group, aryloxy group, butenyloxy group, pentenyl Examples include an unsaturated alkoxy group such as a oxy group, a hexenyloxy group and a dodecenyloxy group, and a cyclic alkyloxy group such as a cyclohexyloxy group.
- Examples of the aryl group having 6 to 30 carbon atoms include a phenyl group, a naphthyl group, an anthranyl group, a biphenyl group, a pyrenyl group and the like. Further, examples of the aryloxy group having 6 to 30 carbon atoms include a phenyloxy group, a naphthyloxy group, an anthraniloxy group, a biphenyloxy group, and a pyrenyloxy group.
- the alkyl group, alkoxy group, aryl group, or aryloxy group is a methoxycarbonyl group, an ethoxycarbonyl group, a 2- (methoxycarbonyl) phenyloxycarbonyl group, or a 2- (methoxycarbonyl) phenyloxycarbonyloxy group.
- alkyl group having 1 to 30 carbon atoms and the aryl group having 6 to 30 carbon atoms as the substituents include those described above.
- aralkyl group having 6 to 30 carbon atoms Specific examples include a benzyl group, a 3-phenyl n-propyl group, a phenylisopropyl pyr group (-C (CH 3 ) 2 -C 6 H 5 ), and the like.
- salicylate compound used in the present invention examples include 2-methyloxycarbonylphenylmethyl carbonate, 2-methyloxycarbonylphenyl-n-butylcarbonate, and 2-methyloxycarbonylphenyl.
- N Hexylkabonone, 2-ethyloxycarbonylphenyl n-nonylka —bonate, 2-methyloxycarbonylphenyl — n-stearyl-carbonate, 2-methyloxycarbonyl Phenyl-n-octanecosanylcarbonate, 2-methyloxycarbonylphenylphenylcarbonate, 2-ethyloxycarbonylphenylphenylphenolate, 2-methyloxycarbonylphenyl-p- t-butylphenylcarbonyl, 2-ethyloxycarbonylphenyl-pt-butylphenyl Lucaponate, 2-methyloxycarbonylphenylnaphthylcarbonate, 2-ethyloxycarbonylphenyl
- the impurities in the salicylic acid ester compound it is preferable to reduce the amount.
- chlorine and heavy metals are preferred to be small in consideration of the activity in the reaction with the polymer and the effect on the polymer quality.
- chlorine is preferably 100 ppm or less
- heavy metal is preferably 1 ppm or less for each metal element.
- a method for reducing these impurities a method specifically described in the specification of W098 / 452246 can be used.
- the number of compounds having a hydroxyl group such as free methyl salicylate phenol in the salicylate compound is smaller.
- the salicylic acid ester compound is not particularly limited in the practice of the present invention even if it is produced using the above synthesis method.
- a method for producing these derivatives for example, the method described in the specification of US Pat. No. 9,985,526 can be used.
- the aromatic dihydroxy compound used for the polymerization of the polyarylate a compound represented by the following formula (4) is preferably used.
- R ′ R ′ 2 , R ′ 3 and R ′ 4 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an aralkyl group, an aryl group, or a nodogen atom, and W is a carbon atom. It is an alkylidene group, an alkylene group, a cycloalkylidene group, a cycloalkylene group, a fuel group-substituted alkylene group, an oxygen atom, a sulfur atom, a sulfoxide group, a sulfone group, or a direct bond of the formulas 1 to 30. ]
- aromatic dihydroxy compounds include bis (4-hydroxyphenyl) methane, 2,2-bis (4-hydroxyphenylyl) propane, and 1,1-bis (4-hydroxyphenylyl) ethane , 2, 2-bis (4-hydroxy-
- Dihydroxy aryl ethers such as bis (4-hydroxyphenyl) ether, bis (4-hydroxy-1,3,5-dichlorophenyl) ether, 4,4-dihydroxy-1,3,3-dimethylphenyl ether ,
- Dihydroxydiaryl sulfides such as 4,4-dihydroxydiphenyl sulfide and 4,4-dihydroxy-1,3,3-dimethyldiphenyl sulfide; 4,4-dihydroxydiphenyl sulphoxide; 4,4-dihydroxy-3, Dihydroxydiarylsulfoxides such as 3-dimethyldiphenylsulfoxide Cids,
- Dihydroxydiaryl sulfones such as 4,4-dihydroxydiphenyl sulfone, 4,4-dihydroxy-3,3-dimethyldiphenyl sulfone,
- Dihydroxydiaryluizatines such as 4,4-dihydroxydiphenyl 3,3-isatin
- Dihydroxydiallylxanthenes such as 3,6-dihydroxy-9,9-dimethylxanthene,
- Resolesin 3-methylresorcin, 3-ethyl resorcinol, 3-butyl resorcinol, 3-t-butyl resorcinol, 3-phenyl resorcinol, 3-cumyl resorcinol, hydroquinone, 2-methylhydroquinone, 2-ethylhydroquinone, 2 — Butylhydroquinone, 2-t-butylylhydroquinone, 2-phenylhydroquinone,
- Dihydroxydiphenyls such as 4,4, dihydroxydiphenyl and 3,3,1-dichloro-1,4-, 1-dihydroxydiphenyl.
- 2,2-bis (4-hydroxyphenyl) propane is more preferable because of its stability as a monomer and also because it has a small amount of impurities contained therein and is easily available.
- aromatic dihydroxy compounds used in the present invention can be used alone or in combination.
- aromatic ester bond forming precursor examples include aromatic dicarponic acids such as terephthalic acid, isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, and biphenylenedicarboxylic acid;
- Diphenyl terephthalate diphenyl isophthalate, diphenyl naphthalene dicarbonate, diphenyl diphenyl dicarboxylate, bis (m-methylphenyl) terephthalate, bis (p-butylphenyl) terephthalate, isophthalate
- Aromatic dicarboxylic acid diesters such as bis (p-methylphenyl) ester
- Aromatic hydroxycarboxylic acids such as P-hydroxybenzoic acid and hydroxynaphthoic acid
- Aromatic hydroxycarboxylic acid aryl esters such as P-hydroxybenzoic acid phenyl ester
- Acids such as terephthalic acid dichloride, isophthalic acid dichloride, etc., rides, diphenyl carbonate, di-p-tolyl carbonate, dinaphthyl carbonate, di-P-chloro phenyl carbonate, phenyl P —Diaryl carbonates such as tolyl carbonate, phosgenes such as phosgene, phenylchloroformate, and 2,2-bis (4-hydroxyphenyl) propanebischloroformate
- polyarylate when polyarylate is obtained by using an aromatic dicarboxylic acid and an aromatic dihydroxy compound, a direct esterification method is used, and an aromatic dicarboxylic acid diaryl ester and an aromatic dihydroxy compound are used.
- a polyallylate is obtained by a method, a transesterification method is used, and a production method by a melting method is preferably used.
- the dicarboxylic acids serve as a force coupling agent for forming ester bonds.
- Manufacturing methods are preferably used. In this case, by changing the molar balance of each preparation, the resulting polymer may become a polyester resin having a carbonate bond in some cases, but it is needless to say that this is also included in the present invention.
- a fiber bonding method based on an interfacial polymerization method is preferably used.However, in performing the terminal modification described in the present invention, the polymer is melted. It is preferable to carry out the reaction, and it is preferable to use a method in which the polymer obtained by the interfacial polymerization is melted and then the terminal is modified.
- ester bonding precursors diphenyl terephthalate and diphenyl isophthalate are preferably used. Further, a method of reacting terephthalic acid or isophthalic acid with diphenylcapone to obtain diphenylester is preferably used. In this case, carbon dioxide is produced as a by-product.
- the reactivity of the specific salicylate compound disclosed in the present invention is affected by the activity of the band contained in the polymer in the molten state or added to the polymer.
- At least one compound selected from the group consisting of all combinations is desirable.
- specific examples of the alkali metal compound include an alkali metal, a hydroxide thereof, an alcoholate, a phenolate, and a salt of an organic acid or an inorganic acid.
- the amount of such ⁇ may be used in the range of 1 0 one 8-1 0-5 moles of aromatic dihydroxy compound mole. If the above-mentioned range of use is varied, various properties of the obtained polymer are adversely affected, and the reaction does not proceed sufficiently and a large amount of polymer cannot be obtained, which is not preferable.
- the nitrogen-containing basic compound include tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrabutylammonium hydroxide, benzyltrimethylammonium hydroxide, and hexadecyltrimethylammonium hydroxide.
- Tertiary amines such as ammonium hydroxides having alkyl, aryl, aralkyl groups, etc., triethylamine, triptylamine, dimethylpendylamine, hexadecyldimethylamine, or tetramethylammonium polohydride, tetrabutylammonium Ammonia salts such as mpolohydride, tetrabutylammoniumtetraphenylporate, tetramethylammoniumtetraphenylporate, pyridine, alkyl-substituted pyridine S, Bibirijin, N, N-dimethyl ⁇ amino pyridine, nitrogen-containing aromatic compounds, such as, such as cyclic Amin compounds such as piperidine and the like.
- tetramethylileammonium hydroxide and N, N-dimethylaminopyridine are preferably used.
- the amount of the nitrogen-containing basic compound to be used is from 10 to 8 mol to 10 to 1 mol, preferably from 10 to 7 mol to 10 to 2 mol, per 1 mol of the aromatic dihydroxy compound as a raw material as an ammonium nitrogen atom. be able to. More preferred ratio is 1 X 1 0- 5 mol ⁇ 1 X 1 0- 3 mol.
- nitrogen-containing basic compounds may be used alone or in combination.
- nitrogen-containing basic compound in the following formula (2) [wherein R 1 R 2 and R 3 are the same or different, a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, and P is 1 Is an integer of ⁇ 4. ]
- a compound of a metal element belonging to Group 3, 14 or 15 of the periodic table specifically means yttrium, lanthanum, cerium, germanium, tin, or antimony.
- Acid alkoxide or hydroxide for example, metal oxides such as yttrium oxide, lanthanum oxide, cerium oxide, germanium oxide, tin oxide, antimony oxide, yttrium ethoxide, lanthanum methoxide, lanthanum propoxide, germanium ethoxide, germanium butoxide, subutoxide, Examples include alkoxides such as antimony ethoxide, hydroxides such as 7jC yttrium oxide, 7K lanthanum oxide, and 7] ⁇ cerium oxide.
- catalysts may be used in combination.
- the timing and method of addition may be changed for each catalyst compound, such as adding one compound at the start of polymerization and adding another compound during polymerization or during the reaction.
- end decoration
- the term “end» decoration ” means reacting the terminal modifier according to the present application with the terminal group of a polyarylate which will be defined later. There are the closure of the terminal group of the polyester and the increase in the degree of polymerization through the coupling of the polyester by a polymerization promoting reaction.
- Polymerization of the polymer can be carried out under the same conditions as in known ordinary methods.
- the first-stage reaction is carried out at 80 to 250 ° C, preferably at 100 to 230 ° C, and more preferably at 120 to 230 ° C.
- the reaction is carried out at a temperature of 0 to 190 ° C for 0.5 to 5 hours, preferably 1 to 4 hours, more preferably 1.5 to 3 hours.
- the reaction is increased while increasing the degree of vacuum in the reaction system, and finally the reaction is carried out under E at 5 Hg or less, preferably 1 Hg or less.
- the combined reaction may be carried out by a formula (1) or by a batch process.
- the polymerization apparatus used for carrying out the above reaction is not particularly limited, whether it is a tank type, a tube type or a column type.
- the terminal groups of the polyarylate produced by the above method are generally classified into three types of terminal groups: a terminal carboxyl group, a terminal hydroxyl group, and an aromatic ester terminal group (sometimes referred to as a terminal phenyl group in the present specification).
- a terminal carboxyl group a terminal hydroxyl group
- an aromatic ester terminal group sometimes referred to as a terminal phenyl group in the present specification.
- the terminal carboxyl group and the terminal hydroxyl group are reacted with the above-mentioned specific salicylate compound to obtain a desired hue and a polymer having excellent hue stability. Get the first.
- the liver volume of the polymer at this time is preferably higher than the amount that is usually called an oligomer, and preferably has an intrinsic viscosity of 0.2 or more when measured in methylene chloride at 20 ° C. More preferably, it is 0.3 or more in order to obtain the effect of improving the resistance.
- the proportion of the terminal group can be controlled by the amount of the raw materials charged, the method of charging, and the like.
- the terminal group preferably accounts for all the terminal groups.
- the terminal modification reaction is performed on a polymer having a hydroxyl group or terminal carboxyl group ratio of 10 to 70%.
- the number of moles of 7K acid group and ⁇ g carboxyl group in a certain amount of the polymer can be determined by a method such as 1 H-NMR or titration of carboxyl group.
- the modification reaction in the present invention can be classified into a termination reaction and a polymerization reaction depending on the type of the salicylate compound.
- R b is 2- (methoxycarbonyl) phenyloxycarbonyl group, 2- (methoxycarbonyl) phenyloxycarbonyl group, 2- (ethoxycarbonyl) phenylcarboxy group
- a polymerization ⁇ reaction occurs; otherwise, a * -stop reaction occurs.
- the termination reaction and the polymerization key reaction are shown by the reaction scheme as follows.
- K is an alkoxy or aryloxy group
- the method of adding the salicylate compound is not particularly limited, and may be added as a solid or after being dissolved in various solvents.
- the vertical amount when added as a powder blocking agent, the vertical amount may be added all at once or may be added several times.
- the amount of the salicylic acid ester compound added as a fiber-stopping agent is preferably 0.1 to 10 times, more preferably 0.3 to 5 times the total amount of the carboxylic acid group and the * 3 ⁇ 47 acid group of the polymer. Mole, more preferably 0.5 to 2 moles.
- the pressure condition when adding as a powder inhibitor may be normal pressure or caro pressure.
- the reaction after the addition of the terminating agent is usually in the range of 250 to 360 °, preferably 260 to 340 ° C. At a temperature lower than this range, the polymer does not melt and is higher than this range. At temperatures, the polymer may decompose and color.
- the pressure condition after the addition of the fiber-stopping agent may be normal pressure, but the following condition is preferable because salicylic acid esters produced by the reaction are harmed. It is preferably at most 133.32 hPa (l OOTor r), more preferably at most 13.332 hPa (1 OTorr), more preferably at most 1.3332 hPa (lTorr).
- the reaction time is usually 1 to 30 minutes, preferably 1 to 20 minutes, and if necessary, 1 to 15 minutes.
- the polymerization reaction refers to a reaction in which the terminal hydroxyl groups of a polymer are bonded to each other or a terminal hydroxyl group and a terminal lipoxyl group are bonded using the salicylate compound to increase the degree of polymerization.
- the method of adding the salicylate compound as a polymerization agent in the above is not particularly limited, and may be added as a solid or after being dissolved in various solvents.
- the polymerized thigh may be added in a predetermined amount all at once, or may be added several times.
- the amount of the salicylic acid ester compound added as a polymerization accelerator in the present invention is from 01 to 1 mol, preferably from 0.03 to 1 mol, based on the total amount of terminal hydroxyl groups and terminal carboxyl groups of the polymer before terminal modification. 0.7 times mol, more preferred Or 0.05 to 0.5 times mol.
- the pressure condition at the time of adding the polymerized thigh may be normal pressure, reduced pressure, or caro pressure.
- the reaction after the addition of the polymerization keying agent is usually in the range of 250 to 360 °, preferably 260 to 340 ° C. after the addition of the polymerizing fiber agent to the polymer. If it is higher than this range, the polymer will be decomposed and colored.
- the pressure condition after the addition of the polymerizing agent may be normal pressure, but the following condition is preferable because phenols generated by the reaction are involved. It is preferably at most 133.32 hPa d0 OTorr), more preferably at most 13.332 hPa (1 OTorr), more preferably at most 1.3332 hPa (lTorr).
- the reaction time is generally 1 to 30 minutes, preferably 1 to 20 minutes, and may be 1 to 15 minutes if desired.
- a quencher can be used for the polymer after the terminal modification reaction.
- any of the above agents can be used, but salts of organic sulfonic acids are preferable, and quaternary salts of organic sulfonic acids, such as ammonium salts and phosphonium salts, are particularly preferable.
- the obtained polymer has particularly excellent hue and hue stability.
- the method for adding the deactivator to the polymer after terminal modification is not particularly limited.
- the polymer as a reaction product may be added while the polymer is in a molten state, or may be added after pelletizing the polymer and then re-melting. In the former, they are added in a reactor in a molten state obtained after completion of the terminal modification reaction, or they are added in a subsequent polymer pipe or in an extractor and then pelletized or It may be formed into another form.
- the residual phenols contained in the polymer after the terminal modification can be suppressed to a low level.
- the residual phenols refer to aromatic hydroxy compounds such as phenol derived from carbonic acid diester as a raw material, methyl salicylate or ethyl ethyl salicylate derived from salicylate compounds. These are preferably 300 ppm or less, more preferably 200 ppm or less. It is not preferable that the amount of residual phenols is larger than this separation, because the liver volume tends to decrease and coloring tends to occur.
- the stabilizer in a molten state at least one time before, during, or after the terminal modification.
- the caustic stabilizer include, for example, an i-containing acidic compound and Z or a derivative formed from the acidic compound, a phenol-based stabilizer, a thioether-based stabilizer, a phosphorus-based stabilizer, a hinderdamine-based stabilizer, and an epoxy-based stabilizer.
- salicylic acid-based ultraviolet absorbers and benzotriazole-based ultraviolet absorbers are examples of the caustic stabilizer.
- These stabilizers can be used alone or in combination.
- the total number of terminal groups is the total of the phenyl group, the terminal hydroxyl group, and the terminal carboxyl group measured as described above.
- the test piece with the hue removed was kept in air at 110 ° C for 200 hours.
- the hue after the retention was measured by the Lab value in the same manner as above, and the AE value calculated by the following formula was defined as the hue stability.
- AL, Aa respectively, are the values of L, a, and b after holding in air at 110 ° C for 200 hours minus the values of L, a, and b before holding.
- the temperature was raised to 200 ° C., the temperature was gradually increased, and the reaction was carried out at 50 mmHg for 30 minutes while distilling off phenol.
- the type and amount of the end modifier shown in Table 1 were added to the polymer in the molten state. Thereafter, the reaction was continued at 290 ° C. and at an ImmHg of 10 minutes or less to perform a modification reaction. Next, while in the molten state, a quenching agent of the kind and amount shown in Table 1 was added. Thereafter, the reaction was continued at 290 ° C. and 10 mmHg or less for 10 minutes.
- the obtained polymer was taken out to obtain a plate-like sample having a thickness of 5 mm.
- the hue and hue stability of the obtained sample were evaluated. Table 1 shows the results.
- the type and amount of monomer and thigh shown in Table 1 were placed in a reactor equipped with a still and a still and a pressure reducing device. After the atmosphere was replaced with nitrogen, the mixture was stirred at 160 ° C. for 30 minutes. The internal temperature was raised to 180 ° C, and the reaction was carried out at 10 OmmHg for 90 minutes, and the generated carbon dioxide and phenol were distilled off.
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP00915423A EP1114841B1 (en) | 1999-04-20 | 2000-04-07 | Process for producing polyarylate |
DE60005779T DE60005779T2 (de) | 1999-04-20 | 2000-04-07 | Verfahren zur herstellung von polyarylaten |
US09/719,984 US6417291B1 (en) | 1999-04-20 | 2000-04-07 | Process for producing polyarylate |
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JP11248199 | 1999-04-20 | ||
JP11/112481 | 1999-04-20 |
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WO2000063274A1 true WO2000063274A1 (en) | 2000-10-26 |
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PCT/JP2000/002282 WO2000063274A1 (en) | 1999-04-20 | 2000-04-07 | Process for producing polyarylate |
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US (1) | US6417291B1 (ja) |
EP (1) | EP1114841B1 (ja) |
DE (1) | DE60005779T2 (ja) |
WO (1) | WO2000063274A1 (ja) |
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US6548623B2 (en) | 2001-07-24 | 2003-04-15 | General Electric Company | Method of polycarbonate preparation |
US6870025B2 (en) | 2001-07-24 | 2005-03-22 | General Electric Company | Method of polycarbonate preparation |
US6887969B2 (en) | 2002-10-04 | 2005-05-03 | General Electric Company | Method and apparatus to make high molecular weight melt polycarbonate |
JP2014185299A (ja) * | 2013-03-25 | 2014-10-02 | Osaka Gas Chem Kk | フルオレン骨格を有するポリエステル樹脂 |
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WO2002060855A2 (en) * | 2000-12-28 | 2002-08-08 | General Electric Company | Process for the production of polycarbonate |
US6506871B1 (en) | 2001-07-24 | 2003-01-14 | General Electric Company | Extrusion method for making polycarbonate |
US20030120025A1 (en) * | 2001-09-07 | 2003-06-26 | Brack Hans Peter | Process for the production of polycarbonate |
US6600004B1 (en) | 2002-04-10 | 2003-07-29 | General Electric Company | Method of preparing polyestercarbonates |
US6790929B2 (en) | 2002-06-12 | 2004-09-14 | General Electric Company | Method for making an aromatic polycarbonate |
US7041775B2 (en) * | 2004-04-20 | 2006-05-09 | General Electric Company | Method for preparing a polycarbonate oligomer mixture at low temperature for manufacturing polycarbonate |
US7312352B2 (en) * | 2004-08-02 | 2007-12-25 | Paul William Buckley | Method of preparing ester-substituted diaryl carbonates |
US7105626B2 (en) * | 2004-09-10 | 2006-09-12 | General Electric Company | Method for incorporating alkyl ester endgroups to improve the release properties of melt polycarbonate |
US7132498B2 (en) * | 2004-09-27 | 2006-11-07 | General Electric Company | Process to make polycarbonate from bismethylsalicylcarbonate (BMSC) |
US7230066B2 (en) * | 2004-12-16 | 2007-06-12 | General Electric Company | Polycarbonate—ultem block copolymers |
US7365149B2 (en) * | 2005-12-12 | 2008-04-29 | Hans-Peter Brack | Equipment cleaning in the manufacture of polycarbonates |
US7485695B2 (en) * | 2005-12-21 | 2009-02-03 | Sabic Innovative Plastics Ip B.V | Polycarbonates containing low levels of methyl salicylate prepared by a melt polymerization in a reactive extruder |
US7485694B2 (en) * | 2005-12-21 | 2009-02-03 | Sabic Innovative Plastics Ip B.V. | Polycarbonates containing low levels of methyl salicylate prepared by a melt polymerization in a reactive extruder |
US7498399B2 (en) * | 2006-05-31 | 2009-03-03 | Sabic Innovative Plastics Ip B.V. | Method of preparing ester-substituted diaryl carbonates |
US7495064B2 (en) * | 2006-06-26 | 2009-02-24 | Sabic Innovative Plastics Ip Bv | Manufacture of polycarbonates |
US7645851B2 (en) * | 2006-06-30 | 2010-01-12 | Sabic Innovative Plastics Ip B.V. | Polycarbonate with reduced color |
US7482423B2 (en) * | 2006-06-30 | 2009-01-27 | Sabic Innovative Plastics Ip B.V. | Polycarbonates and method of preparing same |
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US7541420B2 (en) * | 2006-06-30 | 2009-06-02 | Sabic Innovative Plastics Ip B.V. | Method for making molded polycarbonate articles with improved color |
US7601794B2 (en) * | 2007-09-28 | 2009-10-13 | Sabic Innovative Plastics Ip B.V. | Monomer solution for producing polycarbonate |
US7619053B2 (en) * | 2007-09-28 | 2009-11-17 | Sabic Innovative Plastics Ip B.V. | Monomer solution for producing polycarbonate |
US7632913B2 (en) * | 2007-09-28 | 2009-12-15 | Sabic Innovative Plastics Ip B.V. | Method of producing polycarbonate in a flash devolatilization system |
US7615605B2 (en) * | 2008-03-26 | 2009-11-10 | Sabic Innovative Plastics Ip B.V. | Monomer solution for producing polycarbonate |
US7671165B2 (en) * | 2008-05-16 | 2010-03-02 | Sabic Innovative Plastics Ip B.V. | Method of forming polycarbonate |
US7674872B2 (en) * | 2008-06-17 | 2010-03-09 | Sabic Innovative Plastics Ip B.V. | Method of producing high molecular weight polymer |
US7547799B1 (en) | 2008-06-20 | 2009-06-16 | Sabic Innovative Plastics Ip B.V. | Method for producing phenolic compound |
US7977447B2 (en) * | 2008-11-18 | 2011-07-12 | Sabic Innovative Plastics Ip B.V. | Method for making carbonates and esters |
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US4680372A (en) * | 1986-02-25 | 1987-07-14 | Celanese Corporation | In-situ end-capping melt prepared aromatic polyester with phenyl benzoate |
EP0764673A2 (en) * | 1995-09-19 | 1997-03-26 | Teijin Limited | Process for the production of polycarbonate |
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US4886875A (en) | 1988-12-07 | 1989-12-12 | E. I. Du Pont De Nemours And Company | End-capping of polyarylate carboxyl acid ends by use of aromatic carbonates |
CN1131259C (zh) * | 1997-04-18 | 2003-12-17 | 帝人株式会社 | 聚碳酸酯树脂的制造方法 |
-
2000
- 2000-04-07 US US09/719,984 patent/US6417291B1/en not_active Expired - Fee Related
- 2000-04-07 EP EP00915423A patent/EP1114841B1/en not_active Expired - Lifetime
- 2000-04-07 DE DE60005779T patent/DE60005779T2/de not_active Expired - Fee Related
- 2000-04-07 WO PCT/JP2000/002282 patent/WO2000063274A1/ja active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US4680372A (en) * | 1986-02-25 | 1987-07-14 | Celanese Corporation | In-situ end-capping melt prepared aromatic polyester with phenyl benzoate |
EP0764673A2 (en) * | 1995-09-19 | 1997-03-26 | Teijin Limited | Process for the production of polycarbonate |
Non-Patent Citations (1)
Title |
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See also references of EP1114841A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6548623B2 (en) | 2001-07-24 | 2003-04-15 | General Electric Company | Method of polycarbonate preparation |
US6870025B2 (en) | 2001-07-24 | 2005-03-22 | General Electric Company | Method of polycarbonate preparation |
US6887969B2 (en) | 2002-10-04 | 2005-05-03 | General Electric Company | Method and apparatus to make high molecular weight melt polycarbonate |
JP2014185299A (ja) * | 2013-03-25 | 2014-10-02 | Osaka Gas Chem Kk | フルオレン骨格を有するポリエステル樹脂 |
Also Published As
Publication number | Publication date |
---|---|
DE60005779T2 (de) | 2004-08-05 |
EP1114841A1 (en) | 2001-07-11 |
US6417291B1 (en) | 2002-07-09 |
EP1114841B1 (en) | 2003-10-08 |
DE60005779D1 (de) | 2003-11-13 |
EP1114841A4 (en) | 2002-08-21 |
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