Process for the production of water-resistant, film-forming chlorinated polymers

US4430483A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Franz Alfes · Krefeld, DE
• Hermann Perrey · Krefeld, DE
• Karl-Heinrich Meyer · Krefeld, DE
• Diez Heine · Leverkusen, DE
• Friedrich Kowitz · Dormagen, DE

Key dates

• Filing date: Jan 21, 1982
• Grant date: Feb 7, 1984
• Expiry date: Jan 21, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F6/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the production of a chlorinated polymer having a chlorine content of from 30 to 70% by weight, which comprises chlorinating a polymer in a chlorinated hydrocarbon solvent, removing the solvent using steam and/or hot water in the presence of at least 1% by weight, based on the chlorinated polymer, of an alkoxylation product of 1 mole of a primary aliphatic alcohol containing at least 8 carbon atoms and at least 1.5 moles of propylene oxide and drying the precipitated chlorinated polymer.