Process for drying chlorinated polymers

US4132006A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Manfred Scholz · Spaichingen, DE
• Karl Kaiser · Long Beach, US
• Horst Semmler · Münstermaifeld, DE

Key dates

• Filing date: Jul 12, 1977
• Grant date: Jan 2, 1979
• Expiry date: Jul 12, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F6/008
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Chlorinated polymers obtained by a filter-separation procedure, in a moist form, especially a water-containing moist form, are dried. To this end, the moist polymer is predried in a first fluidized-bed drying zone, this being continuously operated, and is thereafter further dried in one or more further fluidized-bed drying zones disposed downstream, of the said first drying zone.