| 摘要 |
PURPOSE:To obtain the titled copolymer low in surface energy and excellent in water repellency, stain-proofness, etc., by radical-copolymerizing a specified polysiloxane group-containing monomer with a lower fatty acid vinyl ester. CONSTITUTION:A copolymer is obtained by radical-copolymerizing 2-50wt% at least one polysiloxane group-containing monomer selected from among compounds of formulas I and II [wherein n>=1, R<1> is H or a 1-10C hydrocarbyl group, R<2-5> are each a 1-10C hydrocarbyl group or a group of formula III(wherein q>=1, and R<7-9> are each a 1-10C hydrocarbyl group), R<6> is a 1-10C hydrocarbyl group, X is -(CH2)m-, -O-, -O-(CH2)m- or -CONH-(CH2)m- and m>=1] with 98-50wt% lower fatty acid vinyl ester (e.g., vinyl acetate) at 30-100 deg.C. This copolymer is dissolved in alcohol and saponified at 10-50 deg.C in the presence of a saponification catalyst (e.g., Na2CO3).
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