GB970115A - Process for improving aqueous dispersions - Google Patents

Process for improving aqueous dispersions

Info

Publication number
GB970115A
GB970115A GB31509/60A GB3150960A GB970115A GB 970115 A GB970115 A GB 970115A GB 31509/60 A GB31509/60 A GB 31509/60A GB 3150960 A GB3150960 A GB 3150960A GB 970115 A GB970115 A GB 970115A
Authority
GB
United Kingdom
Prior art keywords
copolymer
styrene
ester
salt
polymers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB31509/60A
Inventor
Francis John Whitby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Chemicals Ltd
Original Assignee
Monsanto Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to GB31509/60A priority Critical patent/GB970115A/en
Priority to FR873017A priority patent/FR1300048A/en
Publication of GB970115A publication Critical patent/GB970115A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/10—Esters
    • C08F222/12—Esters of phenols or saturated alcohols
    • C08F222/16—Esters having free carboxylic acid groups, e.g. monoalkyl maleates or fumarates
    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L35/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L35/06—Copolymers with vinyl aromatic monomers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/08—Copolymers of styrene
    • C08L25/10—Copolymers of styrene with conjugated dienes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Aqueous dispersions are stabilized with an agent comprising a water-soluble salt of a synthetic copolymer of a half-ester of an unsaturated dicarboxylic acid with an ethylenic hydrocarbon which copolymer has an intrinsic viscosity in acetone between 0.01 and 0.1. The half-ester may be a C1- 12 alkyl or an aralkyl ester of maleic, fumaric, citraconic, mesaconic, itaconic or glutaconic acid; ortho hydrocarbon may be ethylene, propylene, butylene, styrene, alpha-methylstyrene or vinyl toluene; and the salt may be an alkali metal, ammonium or amine salt. It is stated that polymers of the specified intrinsic viscosity result from slow mass polymerization at temperatures not above 120 DEG C. in the presence of a chain modifier which may be an amine, Schiff's base, nitro-compound, hydrazine, diazoamino-compound, haloalkane, thiuram or xanthic disulphide, or a mercaptan, thioglycollic acid or an ester thereof, or sulphur, selenium or phosphine. In specific examples monobutyl maleate is copolymerized with styrene using benzoyl peroxide as catalyst, in Example 1 alone and in Example 2 with di-t-butyl peroxide, the modifier being beta-nitrostyrene in Example 1 and t-dodecylmercaptan in Example 2. Both polymers are converted to the sodium salt. The copolymer salts are used in amounts of 0.1 to 5% by weight of solids to stabilize dispersions of pigments in paints or polymer latices e.g. of natural rubber or of a polymer or copolymer of isoprene, butadiene, isobutylene, styrene and acrylonitrile. The examples illustrate the stabilization of a styrene-butadiene copolymer latex. Specification 929,239 is referred to.
GB31509/60A 1960-09-13 1960-09-13 Process for improving aqueous dispersions Expired GB970115A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB31509/60A GB970115A (en) 1960-09-13 1960-09-13 Process for improving aqueous dispersions
FR873017A FR1300048A (en) 1960-09-13 1961-09-12 Improved method of stabilizing aqueous dispersions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31509/60A GB970115A (en) 1960-09-13 1960-09-13 Process for improving aqueous dispersions

Publications (1)

Publication Number Publication Date
GB970115A true GB970115A (en) 1964-09-16

Family

ID=10324153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31509/60A Expired GB970115A (en) 1960-09-13 1960-09-13 Process for improving aqueous dispersions

Country Status (1)

Country Link
GB (1) GB970115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402563A1 (en) * 1989-05-17 1990-12-19 Sika AG, vorm. Kaspar Winkler & Co. Hydrosoluble polymers, process for their preparation and their use as dispersing agents in suspensions of solid materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402563A1 (en) * 1989-05-17 1990-12-19 Sika AG, vorm. Kaspar Winkler & Co. Hydrosoluble polymers, process for their preparation and their use as dispersing agents in suspensions of solid materials

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