| 摘要 |
Copolymers of (a) a vinyl ester of an alpha-branched, saturated, aliphatic monocarboxylic acid of five-20 carbon atoms, (b) an alpha,beta-ethylenically unsaturated carboxylic acid of three to five carbon atoms, (c) a monovinylaromatic compound of eight to nine carbon atoms, (d) a 2-hydroxyalkylester or an amide of an alpha,beta-ethylenically unsaturated carboxylic acid and, optionally, (e) a C1-C4 alkyl ester of acrylic or methacrylic acid and their preparation are described. These special copolymers are especially suitable in water-thinnable compositions, particularly in electrodepositable compositions to produce pore-free coatings or films.
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