| 摘要 |
This invention relates to a copolymeric film forming and release coating comprising as active monomeric components between about 15 and about 40 weight percent of a cyclic polyvinyl compound of the formula: <IMAGE> and between about 60 and about 85 weight % of a hydroxy containing vinyl ether siloxane of the formula <IMAGE> wherein A is a saturated or unsaturated cyclic moiety having a 5 to 8 membered ring; n has a value of from 3 to 8; X and X' are each individually oxygen, sulfur, or NR where R is hydrogen or lower alkyl; B is alkylene having from 2 to 20 carbon atoms or a C2 to C3 alkoxylated derivatives thereof; R1 and R2 are lower alkyl; t has a value of from 1 to 100; T is CH2CHO(YO)mCH2CH(OH)CH2O +TR <IMAGE> where Y is alkylene or alkylenephenylene optionally substituted with fluorine; m has a value of from 1 to 10; U is halo or loweralkyl; v has a value of from 0 to 4; M is -CH2- or <IMAGE> q has a value of from 0 to 20; Z is C2 to C3 alkylene; r has a value of from 0 to 20; D is alkylene or alkylenephenylene and R3 is the same as T or is C1 to C20 alkyl. The invention also relates to the use of the above copolymers and to the copolymerizable composition.
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