Chlorination of polyolefins in the presence of complex formers

US4165431A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Franz Alfes · Krefeld, DE
• Diez Heine · Leverkusen, DE
• Reinhard Kaiser · Cologne, DE
• Gunter Kolb · Leverkusen, DE
• Joachim Probst · Leverkusen, DE
• Franz Weider · Leverkusen, DE

Key dates

• Filing date: Feb 27, 1978
• Grant date: Aug 21, 1979
• Expiry date: Feb 27, 1998

Classification

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

Abstract

A chlorinated colorless polyolefin, preferably a chlorinated colorless isotactic polypropylene, soluble in carbon tetrachloride and having a chlorine content of from 60% to 70% by weight and an average degree of polymerization of from 2000 to 6000, produced by chlorinating polyolefins having a degree of polymerization of from 2000 to 20,000 in suspension or solution or in suspension and solution at 40 to 60.degree. C. in the presence of a halogen transfer agent, a chlorination catalyst and from 0.2 to 0.5% by weight, based on polyolefin, of at least one compound corresponding to the general Formula (I): EQU h.sub.2 n--r--nh>.sub.n H (I) in which R represents the ethylene, propylene or butylene group and n=1-6.