Organo(poly)siloxanes containing terminal siloxane units having organyloxy and hydrogen groups

US5304621A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Gerhard Staiger · Frankenthal (Pfalz), DE
• Rudolf Braun · Burgkirchen an der Alz, DE
• Johann Mueller · Affoltern am Albis, CH
• Michael Stepp · Braunau am Inn, AT
• Werner Brennenstuhl · Altötting, DE
• Petra Absmaier · Emmerting, DE

Key dates

• Filing date: Dec 7, 1992
• Grant date: Apr 19, 1994
• Expiry date: Dec 7, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organo(poly)siloxanes with siloxane units at the end of the chain having organyloxy and hydrogen groups are disclosed as well as a process for producing the same by reacting .alpha.,w-dihydroxyorgan(poly)siloxanes with silanes having a group that can be easily separated and their use in organo(poly)siloxane mixtures that can be stored in the absence of water but which can be cross-linked into elastomers at ambient temperature in the presence of water. Also, a process is disclosed for producing organopolysiloxane elastomers by cross-linking cross-linkable mixtures by addition of Si-linked hydrogen to SiC-linked residues with aliphatic carbon-carbon multiple linkage.