GB988032A - Process for making improved polychloroprene rubber - Google Patents

Process for making improved polychloroprene rubber

Info

Publication number
GB988032A
GB988032A GB1245263A GB1245263A GB988032A GB 988032 A GB988032 A GB 988032A GB 1245263 A GB1245263 A GB 1245263A GB 1245263 A GB1245263 A GB 1245263A GB 988032 A GB988032 A GB 988032A
Authority
GB
United Kingdom
Prior art keywords
polychloroprene rubber
polymerization
alkali metal
latex
rubber
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
GB1245263A
Inventor
Robert Charles Moore
Anthony Archibald Sparks
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co 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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB1245263A priority Critical patent/GB988032A/en
Priority to FR968939A priority patent/FR1386879A/en
Priority to US372711A priority patent/US3328370A/en
Publication of GB988032A publication Critical patent/GB988032A/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
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F36/04—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • C08F36/14—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen
    • C08F36/16—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen containing halogen
    • C08F36/18—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen containing halogen containing chlorine
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C1/00—Treatment of rubber latex
    • C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
    • C08C1/04—Purifying; Deproteinising

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)

Abstract

An improved polychloroprene rubber is obtained by treating a polychloroprene rubber latex with an alkali metal formaldehyde sulphoxylate. The latex may comprise a polymer or copolymer of chloroprene formed by polymerization in the presence of sulphur and/or sulphur compounds, such as mercaptans. The preferred alkali metal salt is the sodium salt. The sulphonylate preferably in amount of 5 per cent or less based on the dry rubber may be added after shortstopping the polymerization and removing unpolymerized monomer in the form of an aqueous solution or dispersion. Emulsifying agents and antioxidants, e.g. 2-6-di-tertiary-butyl-p-cresol may also be present. The pH may be adjusted, e.g. from 11.5 to 7, and the product isolated by freeze coagulation.
GB1245263A 1963-03-29 1963-03-29 Process for making improved polychloroprene rubber Expired GB988032A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1245263A GB988032A (en) 1963-03-29 1963-03-29 Process for making improved polychloroprene rubber
FR968939A FR1386879A (en) 1963-03-29 1964-03-27 Process for making an improved polychroroprene rubber
US372711A US3328370A (en) 1963-03-29 1964-06-04 Process for the manufacture of polychloroprene rubber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1245263A GB988032A (en) 1963-03-29 1963-03-29 Process for making improved polychloroprene rubber

Publications (1)

Publication Number Publication Date
GB988032A true GB988032A (en) 1965-03-31

Family

ID=10004865

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1245263A Expired GB988032A (en) 1963-03-29 1963-03-29 Process for making improved polychloroprene rubber

Country Status (1)

Country Link
GB (1) GB988032A (en)

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