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AssigneeSumitomo Dow Limited
InventorsWataru Fujiwara, Junko Hyoda, Yasushi Toyoda, Saburo Mishiba
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A copolymer latex which is useful in an adhesive composition, a paper coating composition, an adhesive composition for carpet lining and an adhesive composition for a rock fiber substrate is prepared by emulsion copolymerizing an aliphatic conjugated diene monomer and at least one other monomer copolymerizable therewith in the presence of a chain transfer agent and at least one compound having no copolymerizing reactivity selected from the group consisting of hydrocarbons having 5 to 12 carbon atoms, halogenated aromatic hydrocarbons, five or six membered ring heterocyclic compounds, aliphatic ethers and aliphatic esters in an amount of 1 to 100 parts by weight per 100 parts by weight of a total amounts of the aliphatic conjugated diene monomer and the other monomer.
A process for preparing a copolymer latex which comprises emulsion copolymerizing 10 to 80% by weight of an aliphatic conjugated diene monomer, 1 to 10% by weight of an ethylenically unsaturated carboxylic acid monomer and 10 to 89% by weight of at least one monoolefinic monomer in the presence of a chain transfer agent in an amount of 0.05 to 10 parts by weight per 100 parts by weight of the total amount of monomers and at least one compound having no copolymerizing reactivity selected from the group consisting of hydrocarbons having 5 to 12 carbon atoms,.halogenated aromatic hydrocarbons, five or six membered ring heterocyclic compounds, aliphatic ethers and aliphatic esters in an amount of 1 to 100 parts by weight per 100 parts by weight of the total amount of the monomers.
Dependencies are inferred from the claim text.