abstract |
The present invention provides a copolymer latex, which contains 50-88% by weight of conjugated diene monomer units, 10-40% by weight of ethylenically unsaturated nitrile monomer units, and 2-2% by weight of ethylenically unsaturated acid monomer units The latex of the copolymer of 10% by weight has a methyl ethyl ketone insoluble content of 70% by weight or less and a methyl ethyl ketone swelling degree of 40 times or more when the copolymer is made into a dry film. |