| 摘要 |
An epoxy resin-diammonium salt emulsion is based on a liquid epoxy resin, water, an emulsifier and a latent curing agent, wherein the emulsifier is (a) a polyvinyl alcohol obtained by saponification of polyvinyl acetate with a degree of hydrolysis of at least 70% and a molecular weight of at least 5,000, (b) a polyoxazoline having a molecular weight of 10,000-100,000, and/or (c) a copolymer of N-vinylpyrrolidone with vinyl esters of mono- or dibasic carboxylic acids of up to 6 carbon atoms, (meth)acrylic esters of mono- and dihydric alcohols of up to 6 carbon atoms, maleic, fumaric, crotonic acid and/or styrene and wherein the latent curing agent is the salt from a (a) diamine of the formula H2N-CH2-R-NH2 or H2N-R-CH2-R-NH2 wherein R is an optionally substituted C4-9-alkylene residue, an optionally substituted C6-9-cyclo- alkylene residue, or a C7-9-aralkylene residue, with (b) optionally hydroxy-group-containing, aliphatic, cycloaliphatic, or aromatic mono- or dicarboxylic acids of up to 12 carbon atoms. |
