Storage-stable organopolysiloxane compositions which can be crosslinked to give elastomers with elimination of alcohols

US6303678A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Wolfgang Ziche · Diera, DE
• Norman Dorsch · Burghausen, DE
• Susanne Straussberger · Mehring, DE
• Wolfgang Hechtl · Burghausen, DE

Key dates

• Filing date: Mar 14, 2000
• Grant date: Oct 16, 2001
• Expiry date: Mar 14, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Stable RTV-1-alkoxy compositions contain a tin catalyst and surfactants (S) which contain divalent polyether units of the general formula (I) EQU --O--[(CR.sup..alpha. R.sup..beta.).sub.u --O].sub.v -- (I) in which PA1 R.sup..alpha. and R.sup..beta. are hydrogen or a monovalent C.sub.1 -C.sub.10 -hydrocarbon radical optionally substituted by hydroxyl, fluorine, chlorine, bromine, C.sub.1 -C.sub.10 -alkoxyalkyl or cyano groups, PA1 u is from 1 to 6 and PA1 v is from 3 to 100. The compositions are stable despite the presence of the tin catalyst and alkoxy-functional organosilicon compounds.