Polymerization of vinyl chloride with S.sub.x O.sub.y containing emulsifiers

US4218553A · kind A · utility

Assignee

• Chemische Werke Huels Aktiengesellschaft · US

Inventors

• Hermann Winter · Marl, DE
• Gerhard Schroter · Marl, DE
• Wolfgang Jurgeleit · Marl, DE
• Josef Kalka · Herten, DE
• Bernhard Mihm · Marl, DE

Key dates

• Filing date: Jan 6, 1978
• Grant date: Aug 19, 1980
• Expiry date: Jan 6, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2327/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Improved PVC polymers are prepared by an emulsion polymerization process using an emulsifier mixture comprising: PA1 (a) 70-30% by weight of an alkyl sulfate of the formula R--OSO.sub.3 Me wherein R is alkyl of 10-18 carbon atoms and Me is Na or K; and PA1 (b) correspondingly 30-70% by weight of at least one member selected from the group consisting of PA2 (i) 0-65% by weight of an alkyl ether sulfate of the formula R--(OCH.sub.2 --CH.sub.2).sub.n --OSO.sub.3 Me wherein n is an integer of 1-5 inclusive and R and Me have the above-indicated values, and PA2 (ii) 0-60% by weight of a sodium alkyl sulfonate wherein the alkyl chain is of 10-20 carbon atoms.