Process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups

US4584360A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Winfried Paul · Krefeld, DE
• Werner Nouvertne · Krefeld, DE
• Dieter Neuray · Krefeld, DE
• Helmut Steinberger · Leverkusen, DE
• Wolfgang Grape · Cologne, DE

Key dates

• Filing date: Apr 13, 1984
• Grant date: Apr 22, 1986
• Expiry date: Apr 13, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/382
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The subject of the present invention is a process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups by reacting polydiorganosiloxanes containing bis-acyloxy terminal groups with diphenols in a molar ratio of 1:2 to 1:20.