KALT HAERTENDE SILIKONKAUTSCHUK- ZUSAMMENSETZUNG

A room temperature vulcanizable silicone rubber composition having thermal stability, low shrinkage upon cure and a long work life containing a linear fluid organopolysiloxane containing terminal silicon bonded hydroxy groups and having a viscosity of anywhere from 1000 to 10,000,000 centipoise at 2...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	AUGUSTINE SMITH,ROBERT
Format:	Patent
Sprache:	ger
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 room temperature vulcanizable silicone rubber composition having thermal stability, low shrinkage upon cure and a long work life containing a linear fluid organopolysiloxane containing terminal silicon bonded hydroxy groups and having a viscosity of anywhere from 1000 to 10,000,000 centipoise at 25 DEG C; from 100 to 350% by weight based on said linear organopolysiloxane of an extending filler; from 1 to 30% by weight of said linear organopolysiloxane of a cross linking agent which is preferably an alkyl silicate or a partial hydrolysis product of an alkyl silicate; from 0.5 to 10% by weight of a worklife extending additive which is a low molecular weight silanol end-stopped diorganopolysiloxane and from 0.1 to 5% by weight of said linear organopolysiloxane of a catalyst which is the reaction product of an organic tin oxide and a hydrocarbon ester. The above-named ingredients cure to a silicone elastomer which is especially suited for making molds.