GB929219A - Synthetic rubber latex suitable for use in the production of foamed articles - Google Patents

Synthetic rubber latex suitable for use in the production of foamed articles

Info

Publication number
GB929219A
GB929219A GB244462A GB244462A GB929219A GB 929219 A GB929219 A GB 929219A GB 244462 A GB244462 A GB 244462A GB 244462 A GB244462 A GB 244462A GB 929219 A GB929219 A GB 929219A
Authority
GB
United Kingdom
Prior art keywords
conjugated diene
copolymer
added
aromatic compound
butadiene
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
GB244462A
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB929219A publication Critical patent/GB929219A/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

Landscapes

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

Abstract

A synthetic rubber latex comprises a rubber component the major proportion of which is a copolymer of a conjugated diene and a monovinyl-substituted aromatic compound in a weight ratio of from 50:50 to 90:10 which copolymer has been prepared by emulsion polymerization in which all the aromatic compound is present initially and the conjugated diene is added in a plurality of portions or continuously at a fluctuating rate during the polymerization reaction. The conjugated diene may be present initially in amount from 10 to 20 parts per 100 of total monomer, and may be added in at least three portions. Butadiene and styrene are the specified monomers. Peroxides, redox catalysts, organo-metallic catalysts, emulsifying agents (sulphonates &c.) and modifying agents (e.g. mercaptans) may also be present. The product may be gelled and vulcanized and may be used in the production of foamed articles.ALSO:Foamed articles are made from a rubber latex component the major proportion of which is a copolymer of a conjugated diene and a monovinyl-substituted aromatic compound in a weight ratio of from 50 : 50 to 90 : 10 which copolymer has been prepared by an emulsion polymerization in which all the aromatic compound is present initially and the conjugated diene is added in a plurality of portions or continuously at a fluctuating rate during the polymerization reaction. Butadiene and styrene are specified. The latex may be foamed by any conventional procedure. In a typical process, a latex of butadiene-styrene (68,7-31,3) of 61% solids is mixed with 2,5 parts sulphur (50% dispersion) and 0,75 parts zinc diethyl-dithiocarbamate and 1 part of the zinc salt of mercaptobenzothiazole (50% dispersion), set, 0,5 styrenated phenol, 0,75 parts mixture of ethyl chloride, ammonia and formaldehyde and 0,15 part methocel added, whipped to a foam gelled with zinc oxide and sodium silicfluoride and vulcanised in moulds.
GB244462A 1961-01-23 1962-01-23 Synthetic rubber latex suitable for use in the production of foamed articles Expired GB929219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8394861A 1961-01-23 1961-01-23

Publications (1)

Publication Number Publication Date
GB929219A true GB929219A (en) 1963-06-19

Family

ID=22181697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB244462A Expired GB929219A (en) 1961-01-23 1962-01-23 Synthetic rubber latex suitable for use in the production of foamed articles

Country Status (2)

Country Link
GB (1) GB929219A (en)
NL (1) NL273804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062989A2 (en) * 1981-04-10 1982-10-20 Dunlop Limited Latex foam rubbers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062989A2 (en) * 1981-04-10 1982-10-20 Dunlop Limited Latex foam rubbers
EP0062989A3 (en) * 1981-04-10 1983-06-01 Dunlop Limited Latex foam rubbers

Also Published As

Publication number Publication date
NL273804A (en)

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