ELASTOMER COMPOSITION AND DISPENSABLE PRECURSOR THEREFOR

A dispensable precursor composition for highly filled, thermally conductive elastomers that is adapted to fill deep section mold cavities, which composition is an intimate admixture of a first component comprising an olefinically unsaturated crosslinkable polysiloxane and a second component comprisi...

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Bibliographische Detailangaben
Hauptverfasser:	PETT, ROBERT ALLAN, LEMIEUX, MARVIN ADAM, THEODORE, ARES NICHOLAS, QADERI, SAIYED BURHAN AHMAD
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A dispensable precursor composition for highly filled, thermally conductive elastomers that is adapted to fill deep section mold cavities, which composition is an intimate admixture of a first component comprising an olefinically unsaturated crosslinkable polysiloxane and a second component comprising a silyl hydride functional siloxane which composition comprises: I. 100 parts by weight of the crosslinkable polysiloxane which has a formula: wherein at least most of the Ra's and Rb's are selected from (A) saturated hydrocarbyl or hydrocarbyloxy groups having a total of 1 to about 10 carbon atoms that are alkyl or aryl or alkyl and aryl and (B) allyl or vinyl groups but wherein up to about 25% of the Rb's may be s