Terminal cluster vinyl silicones and acrylate cluster silicones therefrom
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机译:末端簇状乙烯基有机硅和丙烯酸酯簇状有机硅
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摘要
A polyorganosiloxane polymer having a structure represented by one of the formulas ##EQU1##where the R groups are the same or different organic groups other than acrylic groups or groups co-curable therewith; A is a linear polyorganosiloxane segment containing between 3 and about 50 siloxane repeat units at least 3 of which are acrylic group containing repeat units represented by the formula where R.sup.1 is lower alkyl, the R.sup.2 groups are the same or different alkylene, alkyleneoxy or alkenylene groups, and y is 0-4; B is a polyorganosiloxane segment represented by the formula ##STR1## where x is an integer of at least 100; C is A or a triorganosilyl group; m is an integer of 1 or more; and n is 3 or 4.
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