Organopolysiloxane compositions and their use in low-modulus compositions which can be crosslinked at room temperature

US7151150B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Uwe Scheim · Coswig, DE
• Wolfgang Ziche · Diera, DE

Key dates

• Filing date: Dec 5, 2003
• Grant date: Dec 19, 2006
• Expiry date: Dec 5, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S528/901
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organopolysiloxane compositions obtainable by reaction of (a) essentially linear organopolysiloxanes which are terminated at both ends by Si-bonded hydroxy groups, (b) optionally, plasticizers, (c) at least one dialkylaminomethylalkyldialkoxysilane chain extender and/or partial hydrolysate thereof, (d) at least one deactivator, (e) optionally, one or more alkyltrialkoxysilanes and/or partial hydrolysates thereof, and (f) optionally, catalysts for accelerating the reaction of silane (e) with Si—OH groups, are useful in low-modulus compositions which can be crosslinked at room temperature, in particular, compositions which crosslink with elimination of alcohols.