Emulsifier for the preparation of polymers

US4346203A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Adolf Schmidt · Adelsheim, DE
• Helmut-Martin Meier · Ratingen, DE
• Gunther Schedrat · Leverkusen, DE
• August Bockmann · Krefeld, DE

Key dates

• Filing date: Jul 30, 1980
• Grant date: Aug 24, 1982
• Expiry date: Jul 30, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2/26
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An emulsifier for the preparation of polymers comprising more than 50 percent by weight of an alkali metal salt of polysulphonic acid of alkane of medium chain length is disclosed. The emulsifier is useful in forming emulsions of polymers especially thermoplastic polymers and in particular polymers of vinyl chloride. It is useful in vinyl chloride polymerization and co-polymerization to form an emulsifier composition having improved transparent and antistatic properties. The polymer can be added before, during or after polymerization. When added after polymerization it provides improved properties to a calendered object obtained from the polymer.