Stable silicone emulsions

US4554187A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Grape · Cologne, DE
• Franz Saykowski · Cologne, DE
• Ottfried Schlak · Cologne, DE
• Thomas Wurminghausen · Leverkusen, DE

Key dates

• Filing date: Jun 21, 1984
• Grant date: Nov 19, 1985
• Expiry date: Jun 21, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A silicone emulsion which can be converted into an elastomeric product under ambient conditions by eliminating and evaporating water and alcohol or carboxylic acid, comprising by weight approximately PA0 (A) 100 parts of a hydroxyl-terminated polydiorganosiloxane having a molecular weight of at least about 50,000, PA0 (B) 1 to 400 parts of a low molecular weight, reactive acyloxy or alkoxy-functional silicone resin, PA0 (C) 0.1 to 20 parts of a catalytic compound, PA0 (D) 0 to 200 parts of a thixotropic filler and PA0 (E) 0 to 200 parts by weight of a non-thixotropic filler, the silicone emulsion having a solids content of about 20 to 85% by weight. The emulsion is especially suited for coatings and sealants.