GB784028A - Preparation of high-viscosity sulphonation products having a viscosity stability - Google Patents

Preparation of high-viscosity sulphonation products having a viscosity stability

Info

Publication number
GB784028A
GB784028A GB32682/55A GB3268255A GB784028A GB 784028 A GB784028 A GB 784028A GB 32682/55 A GB32682/55 A GB 32682/55A GB 3268255 A GB3268255 A GB 3268255A GB 784028 A GB784028 A GB 784028A
Authority
GB
United Kingdom
Prior art keywords
viscosity
styrene
reaction
per cent
weight
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
GB32682/55A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB784028A publication Critical patent/GB784028A/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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/34—Introducing sulfur atoms or sulfur-containing groups
    • C08F8/36—Sulfonation; Sulfation
    • 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
    • C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
    • C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages

Abstract

Polymers substantially free of cross-linkages and ester groups and containing at least 60 per cent of at least one mono-vinyl aromatic hydrocarbon of the benzene series, and which in solution in nine times their weight of toluene have a viscosity of at least 82.4 centiposes at 25 DEG C., are sulphonated by reacting with chlorsulphonic acid, by admixing slowly and with vigorous agitation, in the presence of sulphur dioxide at a temperature between - 40 DEG C. and 10 DEG C. Suitable starting materials are polymers of styrene and ar-vinyltoluene, and copolymers thereof with a -methyl styrene, archloro-styrene, acrylonitrile or methacrylonitrile. At least 0.7 molecular proportion of chlorosulphonic acid for each molecular proportion of monomer and an amount of from 80 to 99 per cent by weight of the reaction mixture of sulphur dioxide is used. The products are capable of being highly swollen by aqueous liquids to form aqueous compositions of stable viscosity. The polymer may be in the form of fine particles of not greater than 10 microns diameter and the reaction may be performed continuously to give swollen granules which are subsequently dried. They may be converted into salts by reaction with ammonia, amines and sodium or potassium hydroxide.
GB32682/55A 1954-11-24 1955-11-15 Preparation of high-viscosity sulphonation products having a viscosity stability Expired GB784028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US784028XA 1954-11-24 1954-11-24

Publications (1)

Publication Number Publication Date
GB784028A true GB784028A (en) 1957-10-02

Family

ID=22143813

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32682/55A Expired GB784028A (en) 1954-11-24 1955-11-15 Preparation of high-viscosity sulphonation products having a viscosity stability

Country Status (2)

Country Link
DE (1) DE1031514B (en)
GB (1) GB784028A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL125475C (en) * 1961-03-01
AU1304497A (en) 1995-12-21 1997-07-17 Iab Ionenaustauscher Gmbh Bitterfeld Process for the preparation of very acidic cation exchangers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533210A (en) * 1950-12-12 Method for sulfonation of
US2533211A (en) * 1950-12-12 Process for stjlfonating
DE580366C (en) * 1930-09-05 1933-07-13 I G Farbenindustrie Akt Ges Process for the preparation of sulfuric acid derivatives of polymeric compounds
NL73836C (en) * 1942-08-11

Also Published As

Publication number Publication date
DE1031514B (en) 1958-06-04

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