Patent ID: 6254811
Filing Date: 2001-07-03
Classification: C08G,C08K,C08L

Abstract:
An alkoxy RTV-1 composition comprising 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)(HO).sub.a OP(--O--[(CR.sup.1.sub.2).sub.b --O].sub.c [(CR.sup.2.sub.2).sub.d ].sub.e --L--M).sub.(3-a) (I),wherea 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 1L is an --O--, --COO--, --OOC--, --CONR.sup.3 --, --NR.sup.4 CO-- or --CO-- radical,R.sup.3 and R.sup.4 are a hydrogen radical or C.sub.1 -C.sub.10 -alkyl radical, andM 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 single carbon atom, not more than one of radicals R.sup.1 and R.sup.2 is a hydroxyl radical.