Manufacture of low molecular weight block copolymers of vinyl or diene monomers and alkylene oxides

US3978160A · kind A · utility

Assignee

• Badische Anilin- & Soda-Fabrik Aktiengesellschaft

Inventors

• Erhard Seiler · Ludwigshafen, DE
• Gerhard Fahrbach
• Dieter Stein

Key dates

• Filing date: Jul 30, 1973
• Grant date: Aug 31, 1976
• Expiry date: Jul 30, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Manufacture of low molecular weight block copolymers of vinyl or diene monomers and alkylene oxides. In a first stage, the vinyl or diene monomers are polymerized as chain stopper, and in a second stage, one or two blocks A are added thereto by the addition of further alkylene oxide. The resulting block copolymers may be used as prepolymers for the manufacture of polyurethanes, as dispersing agents for dyes, as antistatic agents, emulsifiers, surfactants or as paper and textile finishing agents.