Process for the preparation of chlorinated polymers

US4206093A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Klaus Hoehne · Leverkusen, DE
• Johann Jelen · Leverkusen, DE
• Diez Heine · Leverkusen, DE
• Rolf Baatz · Dormagen, DE

Key dates

• Filing date: Apr 27, 1977
• Grant date: Jun 3, 1980
• Expiry date: Apr 27, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/22
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of chlorinated aliphatic polymers wherein chlorine-free polymers are chlorinated by using gaseous chlorine in chlorinated hydrocarbons as solvents and the chlorinated aliphatic polymers are recovered from the chlorinating solution by steam distillation in which process from 15 to 50% by weight of a lacquer resin is added to the chlorinating solution before steam distillation. The chlorinated polymers contain less residual solvent.