发明名称 |
Silicone release coating compositions |
摘要 |
A release coating composition is prepared comprising a polyorganosiloxane (A) having alkenyl groups, a crosslinking agent (B) having organohydrogensiloxane groups, a catalyst for the hydrosilylation reaction between (A) and (B), and an anchorage additive for enhancing the adhesion of the composition to a polymer film substrate. The anchorage additive is the reaction product of a fluid polyorganosiloxane (C) containing at least one alkenyl group and at least one silanol group with a hydrolysable silane (D) containing at least one epoxide group. The curable silicone release coating composition can be applied to a substrate known as a ‘liner’ retaining a label, which liner can for example be paper or a polymer film, and cured. |
申请公布号 |
US9562149(B2) |
申请公布日期 |
2017.02.07 |
申请号 |
US200712377508 |
申请日期 |
2007.08.02 |
申请人 |
DOW CORNING CORPORATION |
发明人 |
Cray Stephen;Habimana Jean De La Croix;Rich David;Thibaut Marc |
分类号 |
C08G77/12;C08K5/541;C08L83/06;C09D183/06 |
主分类号 |
C08G77/12 |
代理机构 |
Howard & Howard Attorneys PLLC |
代理人 |
Howard & Howard Attorneys PLLC |
主权项 |
1. A release coating composition comprising: a polyorganosiloxane (A) having alkenyl groups; a crosslinking agent (B) having organohydrogensiloxane groups; a catalyst for the hydrosilylation reaction between (A) and (B); an anchorage additive for enhancing the adhesion of the composition to a polymer film substrate, characterised in that the anchorage additive is the reaction product of a fluid polyorganosiloxane (C) containing at least one alkenyl group and at least one silanol group with a hydrolysable silane (D) containing at least one epoxide group; and a filler present from 0 to 30% by weight of the release coating composition, wherein the release coating composition is free from a fluoroorganosilicone compound. |
地址 |
Midland MI US |