Dow Silicones Corporation

Lori Dehlin

Sze-Sze Ng

Zhenbin Niu

David Rich

Alex Knott

Deana Dujardin

Dongchan Ahn

Timothy P Mitchell

Pierre Chevalier

Randall Gene Schmidt

Timothy Paul Mitchell

Thomas Bekemeier

Hannah Wedge

Mike Ferritto

Tim Mitchell

Dianna Proffit

Sébastien Grofils

Dave Rich

Steve Cray

Tom Bekemeier

A composition for forming a release coating is disclosed. The composition comprises (A) an organopolysiloxane comprising the reaction product of: (i) a silicone resin having a particular formula; (ii) a cyclic siloxane; and (iii) (iii) at least one of (A)(iii)(a) a branched organopolysiloxane having a particular formula or (A)(iii)(b) a terminating agent; in the presence of a polymerization catalyst. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically unsaturated groups per molecule.

Composition for preparing a release coating

A composition for forming a release coating is disclosed. The composition comprises (A) an organopolysiloxane comprising the reaction product of: (i) a silicone resin having a particular formula; and (ii) a cyclic siloxane; in the presence of a polymerization catalyst. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically unsaturated groups per molecule.

A silicone release coating composition and method for its preparation and use are described. A release coating prepared by curing the silicone release coating composition has high immediate release force (>50 g/in). A release liner including the release coating is suitable for use as a transfer liner in processes for making composites articles, such as aircraft parts.

Silicone release coating composition and methods for the preparation and use of same

A composition for forming a release coating is disclosed. The composition comprises (A) the reaction product of (1) a branched organopolysiloxane including M, D and Q siloxy units and an average of at least two silicon-bonded ethylenically unsaturated groups per molecule; and (2) an organosilicon compound having an average of at least two silicon-bonded hydrogen atoms per molecule; in the presence of a hydrosilylation catalyst. The composition further comprises (B) an organopolysiloxane having an average of at least two silicon-bonded ethylenically unsaturated groups per molecule.

An (A) additive organopolysiloxane composition is disclosed which comprises (A1) a branched organopolysiloxane polymer comprising M, D and Q siloxy units and (A2) a silicone resin. The (A) additive organopolysiloxane composition has a content of aliphatically unsaturated groups of from 1.5 to 7.0 wt. %. A curable composition is also disclosed, the curable composition comprising the (A) additive organopolysiloxane composition, (B) an organosilicon compound having at least two silicon-bonded hydrogen atoms per molecule, and (C) a hydrosilylation catalyst. A method of preparing the curable and a method of forming a film with the curable composition are also disclosed.

Additive organopolysiloxane composition, curable composition, and film

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Midland, MI, United States of America

Lori Dehlin