CA2406270A1 - Structurally-modified polymer flocculants - Google Patents

Structurally-modified polymer flocculants Download PDF

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Publication number
CA2406270A1
CA2406270A1 CA002406270A CA2406270A CA2406270A1 CA 2406270 A1 CA2406270 A1 CA 2406270A1 CA 002406270 A CA002406270 A CA 002406270A CA 2406270 A CA2406270 A CA 2406270A CA 2406270 A1 CA2406270 A1 CA 2406270A1
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CA
Canada
Prior art keywords
structurally
soluble polymer
modified water
monomers
quaternary salt
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Granted
Application number
CA002406270A
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French (fr)
Other versions
CA2406270C (en
Inventor
Wesley L. Whipple
Chidambaram Maltesh
Cathy Johnson
Tracey Guddendorf
Ananthasubramanian Sivakumar
Angela Zagala
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ChampionX LLC
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Publication of CA2406270A1 publication Critical patent/CA2406270A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1431—Dissolved air flotation machines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/04—Polymerisation in solution
    • C08F2/10—Aqueous solvent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/10—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of amides or imides

Abstract

This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers und er free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30 % polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.

Claims (27)

1. A structurally-modified water-soluble polymer prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred.
2. The structurally-modified water-soluble polymer according to claim 1 selected from the group consisting of emulsion polymers, dispersion polymers and gel polymers.
3. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are selected from acrylamide or methacrylamide and one or more monomers selected from the group consisting of diallyldimethylammonium chloride, dimethylaminoethyl acrylate methyl chloride quaternary salt, acrylamidopropyltrimethylammonium chloride, dimethylaminoethyl methacrylate methyl chloride quaternary salt, methacrylamidopropyltrimethylammonium chloride, acrylic acid, sodium acrylate, ammonium acrylate, methacrylic acid, sodium methacrylate, and ammonium methacrylate.
4. The structurally-modified water-soluble polymer of claim 1 wherein the structural modifier is selected from the group consisting of cross-linking agents, chain transfer agents and mixtures thereof.
5. The structurally-modified water-soluble polymer of claim 4 wherein the chain transfer agents are selected from the group consisting of alcohols, sulfur compounds, carboxylic acids or salts thereof, phosphates, and combinations thereof.
6. The structurally-modified water-soluble polymer of claim 5 wherein the chain transfer agents are selected from sodium formate and sodium hypophosphite.
7. The structurally-modified water-soluble polymer of claim 4 wherein the cross-linking agent is selected from the group consisting of N,N-methylenebisacrylamide, N,N-methylenebismethacrylamide, triallylamine, triallyl ammonium salts, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, N-vinylacrylamide, N-methylallylacrylamide, vinyltrimethoxysilane, and combinations thereof.
8. The structurally-modified water-soluble polymer of claim 7 wherein the cross-linking agent is vinyltrimethoxysilane.
9. The structurally-modified water-soluble polymer of claim 7 wherein the cross-linking agent is methylenebisacrylamide.
10. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and dimethylaminoethylacrylate benzyl chloride quaternary salt and the structural modifier is vinyltrimethoxysilane.
11. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and diallyldimethylammonium chloride and the structural modifier is vinyltrimethoxysilane.
12. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is methylenebisacrylamide.
13. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is sodium formate.
14. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is sodium hypophosphite.
15. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is a combination of sodium formate and methylenebisacrylamide.
16. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide, dimethylaminoethylacrylate benzyl chloride quaternary salt and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is methylenebisacrylamide.
17. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide, dimethylaminoethylacrylate benzyl chloride quaternary salt and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is sodium formate.
18. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide, dimethylaminoethylacrylate benzyl chloride quaternary salt and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is a combination of methylenebisacrylamide and sodium formate.
19. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide, dimethylaminoethylacrylate benzyl chloride quaternary salt and dimethylaminoethylacrylate methyl chloride quaternary salt and the structural modifier is vinyltrimethoxysilane.
20. The structurally-modified water-soluble polymer of claim 1 wherein the monomers are acrylamide and acrylic acid or a salt thereof and the structural modifier is sodium hypophosphite.
21. A method of preparing a structurally-modified water-soluble polymer comprising initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred.
22. A method of flocculating an aqueous suspension of organic matter comprising adding to the suspension an effective flocculating amount of the structurally-modified polymer of claim 1.
23. A method of clarifying waste water comprising adding an effective flocculating amount of the structurally-modified water-soluble polymer of claim 1 to the waste water.
24. A method of increasing retention and drainage in a papermaking furnish comprising adding an effective amount of the structurally-modified water-soluble polymer of claim 1 to the furnish.
25.The method of claim 24 further comprising adding a microparticle to the furnish.
26.The method of claim 25 further comprising adding a coagulant to the furnish.
27.A method of flocculating an aqueous coal refuse slurry comprising adding an effective amount of the structurally-modified water-soluble polymer of claim 1 to the slurry
CA2406270A 2000-06-29 2001-04-03 Structurally-modified polymer flocculants Expired - Lifetime CA2406270C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/606,581 2000-06-29
US09/606,581 US6605674B1 (en) 2000-06-29 2000-06-29 Structurally-modified polymer flocculants
PCT/US2001/010867 WO2002002662A1 (en) 2000-06-29 2001-04-03 Structurally-modified polymer flocculants

Publications (2)

Publication Number Publication Date
CA2406270A1 true CA2406270A1 (en) 2002-01-10
CA2406270C CA2406270C (en) 2010-06-01

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CA2406270A Expired - Lifetime CA2406270C (en) 2000-06-29 2001-04-03 Structurally-modified polymer flocculants

Country Status (21)

Country Link
US (2) US6605674B1 (en)
EP (1) EP1297039B1 (en)
JP (1) JP5078214B2 (en)
KR (1) KR100814675B1 (en)
CN (1) CN1239544C (en)
AR (1) AR030425A1 (en)
AT (1) ATE548397T1 (en)
AU (2) AU5128201A (en)
BR (1) BR0110429A (en)
CA (1) CA2406270C (en)
DK (1) DK1297039T3 (en)
ES (1) ES2382025T3 (en)
MX (1) MX227471B (en)
MY (1) MY124884A (en)
NO (1) NO333034B1 (en)
NZ (1) NZ522047A (en)
PT (1) PT1297039E (en)
RU (1) RU2243240C2 (en)
TW (1) TWI275600B (en)
WO (1) WO2002002662A1 (en)
ZA (1) ZA200208420B (en)

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