Dow Corning Corporation

Other

William Neal Fenton

Martin E Cifuentes

Randall Gene Schmidt

Michael Raymond Strong

Bianxiao Zhong

Bernard Vanwert

Michael James Owen

Steven A Snow

David L Stickles

William P Brady

The present invention relates to pressure sensitive adhesive compositions which are prepared by heating a mixture of a polydiorganosiloxane, a silicone resin copolymer, and an organic amine compound or metal salt thereof, and then adding an organic peroxide or azo compound to the resultant reaction product. The silicone pressure sensitive adhesives of this invention are useful in preparing articles such as pressure sensitive tapes, labels, emblems and other decorative or informational signs.

Silicone pressure sensitive adhesives

This invention relates to pressure sensitive adhesive compositions which are obtained by a method comprising reacting a mixture of at least one polydiorganosiloxane, at least one silicone resin copolymer, at least one silanol condensation catalyst, and at least one solvent or plasticizer having a boiling point of at least 200.degree. C., to form a reaction product, and then adding an organic peroxide or azo compound to the resultant reaction product. The silicone pressure sensitive adhesives of this invention are useful in preparing articles such as pressure sensitive tapes, labels, emblems and other decorative or informational signs.

Silicone pressure sensitive adhesive compositions

The present invention relates to a method of making silicone pressure sensitive adhesive compositions comprising the steps of heating a mixture of a polydiorganosiloxane, a silicone resin copolymer, and an equilibration catalyst, and then adding an organic peroxide or azo compound to the resultant reaction product. The silicone pressure sensitive adhesives prepared by the method of this invention are useful in preparing articles such as pressure sensitive tapes, labels, emblems and other decorative or informational signs.

Method of making silicone pressure sensitive adhesives

This invention relates to pressure sensitive adhesive compositions which are obtained by a method comprising reacting a mixture comprising at least one polydiorganosiloxane, at least one silicone resin copolymer, at least one solvent or plasticizer selected from the group consisting of carboxylic acids having at least six carbon atoms and having a boiling point of at least 200.degree.C. and amines having at least 9 carbon atoms and having a boiling point of at least 200.degree.C. to form a reaction product, and then adding an organic peroxide or azo compound to the resultant reaction product. The silicone pressure sensitive adhesives of this invention are useful in preparing articles such as pressure sensitive tapes, labels, emblems and other decorative or informational signs.

A moisture-curable silicone composition, suitable for use as a coating or pressure-sensitive adhesive, is disclosed, said composition comprising (i) a hydroxyl-functional organopolysiloxane resin comprising R.sub.3 SiO.sub.1/2 siloxane units and SiO.sub.4/2 siloxane units in a molar ratio of 0.5/1 to 1.2/1. respectively, wherein R is a hydrocarbon or halogenated hydrocarbon radical: (ii) a diorganopolysiloxane polymer having at least two silicon-bonded alkoxy groups and at least one carbon-bonded amine group in its molecule, said polymer having a viscosity at 25.degree. C. of 20 to 100,000 centipoise, the weight ratio of said resin to said polymer being in the range 20:80 to 80:20; (iii) optionally, a hydrolyzable silane in sufficient amount to provide stability to said composition; and (iv) optionally, sufficient catalyst to accelerate the cure of said composition.

Moisture-curable compositions containing aminoalkoxy-functional silicone

A zwitterionic composition useful as a surface active agent in aqueous solutions. Said composition represented by the general formula

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Midland, MI, United States of America

William Neal Fenton