专利名称：Organosilicone compositions
发明人：Boardman, Larry D., c/o Minnesota Mining
Man.Co.,Melancon, Kurt C., c/o MinnesotaMining Man.Co.,Pham, Phat T., c/o MinnesotaMining Man.Co.
申请号：EP93400583.6申请日：19930305公开号：EP0559575B1公开日：19970528
摘要：This invention relates to a silicone composition for preparing release layers andto substrates bearing a layer of the composition. Silicone compositions have been usedto render adhesive materials nonadherent to substrates. Many of these siliconecompositions cannot be used when backings bearing them cannot withstand the heatrequired to cure the silicone composition or when the silicone composition cannot beadequately anchored to the backing. This invention provides silicone compositions,curable by a hydrosilation reaction, comprising: (a) an organopolysiloxane having at leasttwo ethylenically-unsaturated hydrocarbon groups bonded to the silicon atoms; (b) anorganohydrogenpolysiloxane crosslinking agent; (c) an effective amount of ahydrosilation catalyst; and (d) from about 1% to about 75% by weight of a siliconecomponent containing a plurality of ethylenically-unsaturated groups, said groups havingfrom 4 to 12 carbon atoms, wherein in said silicone component, T-units comprise fromabout 25 to about 90 mole percent of the total number of siloxane units in said siliconecomponent. The composition provides improved anchorage to substrates without
appreciably reducing the curing speed or the release characteristics of the coating.
申请人：MINNESOTA MINING & MFG
地址：US
国籍：US
代理机构：Warcoin, Jacques
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