Dipped articles of rubber

Details Dipped articles of rubber Dipped articles of rubber

1976-05-20

1978-07-25

White, Robert F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 297SQ, 260 297UA, 260 297W, 526303, 526317, 526338, 526342, 264306, B28B 138

Patent

active

041028449

ABSTRACT:
A method for the production of dipped articles of rubber latices, wherein rubber latices are used which have an average rubber-particle diameter of no more than 200 nm and contain a rubber having a Defo value of less than 2000, the rubber latices having been prepared by the polymerization of a monomer mixture of 85 to 50 parts by weight of butadiene and/or isoprene, 10 to 40 parts by weight of acrylonitrile or methacrylonitrile, 0 to 40 parts by weight of styrene, 0 to 10 parts by weight of acrylamide, methacrylamide and/or their methylol derivatives and 0.1 to 10 parts by weight of an .alpha.-.beta.-unsaturated carboxylic acid, in aqueous emulsion in the presence of 0.5 to 6.0% by weight, based on monomer, of an alkylaryl sulphonate and 0 to 5% by weight, based on monomer, of one or more other surface-active substances as emulsifier, at a pH-value below 7, and wherein the pH of the latex is adjusted to a value above 8 with an alkali hydroxide on completion of polymerization and the dipped article of rubber produced by said method.

REFERENCES:
patent: 2959821 (1960-11-01), Kolb
patent: 3411982 (1968-11-01), Kavalir et al.
patent: 3756974 (1973-09-01), Buchheim et al.
patent: 3875101 (1975-04-01), MacLeod

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