Chloroprene latex composition, and method for its production and adhesive composition employing it
AssigneeDenki Kagaku Kogyo Kabushiki Kaisha
InventorsHiroaki Oba, Tsuyoshi Tsuji, Mikio Yamaguchi
Life of this patent
Estimating the term…
Abstract
A chloroprene latex composition wherein the gel content of the chloroprene polymer is from 3 to 40 wt %, and the weight average molecular weight of the sol content is at least 400,000, and a chloroprene latex is presented which is excellent in the initial adhesive performance and normal adhesive performance and which has a good balance of heat resistance, water resistance, etc. with the adhesive properties.
Claims7
A chloroprene latex composition comprising a chloroprene polymer or copolymer having a gel content of from 3 to 40 wt % and having a weight average molecular weight of sol of at least 400,000, and wherein the chloroprene polymer or copolymer is obtained by polymerizing chloroprene or copolymerizing chloroprene with a comonomer and with a rosinate emulsifier.
A latex composition comprising a copolymer of chloroprene with a monomer selected from the group consisting of 2,3-dichloro-1,3-butadiene, 1-chloro-1,3-butadiene, butadiene, isoprene, styrene, acrylonitrile, acrylic acid and its esters, methacrylic acid and its esters, and mixtures thereof having from 3 to 40 wt % of a gel content and having a weight average molecular weight of sol of at least 400,000, and wherein the chloroprene copolymer is obtained by copolymerizing chloroprene with a monomer listed above and with a rosinate emulsifier.
Dependencies are inferred from the claim text.