Sws Silicones Corporation

Wacker Silicones Corporation

James R Adkins

John C Getson

Richard C McAfee

Richard McAfee

Richard L Miskowski

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A platinum catalyst which is prepared by reacting a platinum halide with an organic compound having at least one --C.tbd.C-- group in the presence or absence of a base to form a complex which promotes the addition of silicon-bonded hydrogen atoms to silicon-bonded aliphatic unsaturated hydrocarbon groups in the presence of no-clean flux.

Platinum catalyst and a curable organopolysiloxane composition

Organopolysiloxanes having improved electrical properties, which comprises mixing an organopolysiloxane having reactive groups with an amine-containing organosilicon compound, which is capable of crosslinking with the organopolysiloxane and a treated alumina trihydrate and thereafter exposing the resultant composition to atmospheric moisture. The resultant composition may be dispersed in an organic solvent and applied to electrical insulators.

Organopolysiloxane elastomers having improved electrical properties and

Platinum-styrene complexes are prepared by reacting a platinum halide with styrene or substituted styrenes in the presence of a basic material for a sufficient amount of time to form a complex having more than one and less than four gram atoms of halogen per gram atom of platinum. These platinum-styrene complexes may be used to promote the addition of organosilicon compounds having at least one .tbd.SiH group per molecule to a compound containing aliphatic unsaturation.

Platinum-styrene complexes which promote hydrosilation reactions

A method for improving the activity of a platinum catalyst in promoting the addition of Si-bonded hydrogen atoms to compounds containing aliphatic unsaturation which comprises reacting an ammonium platinum silicon complex with a compound containing aliphatic unsaturation in the presence of a basic compound.

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Adrian, MI, United States of America

James R Adkins