RTV-1 silicone elastomer compositions which crosslink by means of alkoxy groups

US7074875B2 · kind B2 · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Wolfram Schindler · Burgkirchen an der Alz, DE
• Uwe Scheim · Coswig, DE
• Bernd Pachaly · Schweich, DE

Key dates

• Filing date: May 29, 2002
• Grant date: Jul 11, 2006
• Expiry date: May 29, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Crosslinkable RTV-1 compositions with enhanced physical properties include an alkoxy-functional polydiorganosiloxane having alkoxy-functional silyalkylene groups linked to a polydiorganosiloxane via ureaalkylene groups, prepared by reacting an α,ω-dihydroxyorganopolysiloxane with a silazaneand with a silane of formulaOCN—X-SirR1a(OR2)3-a,   (6)where R0, R1, R2, and R3 are optionally substituted hydrocarbon groups.