High-solid self-adhesive and process for the production thereof

摘要

A high-solid self-adhesive having a solid content of 65 to 75% by weight and composed of an emulsion obtained by emulsion-copolymerizing a vinyl monomer mixture containing acrylate esters as the main ingredient and further at least one hydrophilic monomer of formula (A), (B) or (C). <IMAGE> (A) <IMAGE> (B) <IMAGE> (C) wherein R1 is H or COOH, R2 is H or CH3 and R3 is H or CH2OH. A process for the production of the high-solid self-adhesive comprising successively adding a pre-emulsion obtained by previously mixing said vinyl monomer mixture, a surfactant mixture of a nonionic surfactant and an anionic surfactant and water, to the reaction system to carry out an emulsion copolymerization in the presence of a catalyst.