Patent Number: 6,254,811

Title: Organopolysilozane compositions crosslinkable with elimination of alcohols to give elastomer

Abstract: Alkoxy RTV-1 compositions comprise the product of the reaction of (A) an HO-terminated organopolysiloxane, (B1) an alkoxysilane which has at least three alkoxy groups and/or its partial hydrolysates, and (B2) an alkoxysilane which has two alkoxy groups and/or its partial hydrolysates, in the presence of (C) an acid phosphoric ester of the general formula (I) where a is 1 or 2, R.sup.1 and R.sup.2 are a hydrogen radical, methyl radical or hydroxyl radical, b and d are 2 or 3, c is an integer from 2 to 15, e is 0 or 1 L comprises a radical --O--, --COO--, --OOC--, --CONR.sup.3 --, --NR.sup.4 CO-- or --CO--, R.sup.3 and R.sup.4 are a hydrogen radical or C.sub.1 -C.sub.10 -alkyl radical, and M is a monovalent, unsubstituted or hydroxyl-, fluorine-, chlorine-, bromine-, C.sub.1 -C.sub.10 -alkoxyalkyl- or cyano-substituted C.sub.1 -C.sub.20 -hydrocarbon radical, with the proviso that on any given carbon atom not more than one radical R.sup.1 and R.sup.2 may be a hydroxyl radical.

Inventors: Finger; Christian (Muhldorf, DE), Dorsch; Norman (Burghausen, DE), Hechtl; Wolfgang (Burghausen, DE), Baumgartner; Christian (Burghausen, DE), Heinrich; Alfred (Ach, AT)

Assignee: Wacker-Chemie GmbH

International Classification: C08K 5/00 (20060101); C08K 5/521 (20060101); C08L 83/00 (20060101); C08L 83/04 (20060101); E04B 001/68 (); C08G 077/18 (); C08G 077/16 ()

Expiration Date: 07/03/2018