Process for the production of chloroprene polymer mixtures

US4443583A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rudiger Musch · Bensberg, DE
• Gottfried Pampus
• Rudolf Casper · Leverkusen, DE
• Peter Muller · Leverkusen, DE
• Wilhelm Gobel · Leverkusen, DE

Key dates

• Filing date: Jun 10, 1982
• Grant date: Apr 17, 1984
• Expiry date: Jun 10, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of polychloroprene mixtures of sol and gel polymers in a ratio, by weight, of rom 1:4 to 9:1, the gel polymer being produced by radical emulsion polymerization from chloroprene in the presence of 4 to 10% by weight of water soluble disproportionated abietic acid, and the sol polymer being produced by radical emulsion polymerization of chloroprene in the presence of not more than 3.5% by weight of a water soluble disproportionated abietic acid with the polychloroprene mixture containing at most 3.8% of said acid.