Method for preparing polyorganosiloxane resins that contain mono-and tetrafunctional units

US6197914A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Klaus Kaeppler · Burghausen, DE
• Robert Lehnert · Dresden, DE
• Sabine Hoffmann · Radebeul, DE
• Toni Schoeley · Meißen, DE

Key dates

• Filing date: Dec 23, 1998
• Grant date: Mar 6, 2001
• Expiry date: Dec 23, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for preparing a polyorganosiloxane, that contains mono- and tetrafunctional units, by hydrolysis and condensation of mixtures of alkyl silicates and alkylsilanes and/or their hydrolyzates and compounds containing SiCl groups.