Title:
MANUFACTURE OF VINYL CHLORIDE POLYMER AND COPOLYMER BY SUSPENSION POLYMERIZATION AND METHOD OF LOWERING VISCOSITY OF SUSPENSION COMPRISING PASTE-FORMABLE VINYL CHLORIDE POLYMER AND COPOLYMER
Document Type and Number:
Japanese Patent JPS58206609
Kind Code:
A
Abstract:
Production of suspension polyvinyl chloride suitable for reducing the viscosity of polyvinyl chloride plastisols is effected by suspension polymerization in the presence of small amounts of (a) an ethylene/propylene/ethylidene norbornene terpolymer having a propylene content of 40-50% by weight, with 5-15 double bonds per 1,000 carbon atoms and with a viscosity of 4-20 mPa s, measured with 2% solutions in trichloroethylene at 25 DEG C.; and/or (b) a polyvinyl isobutyl ether having a K value of 80-150, measured with 0.5% solutions in isooctane at 20 DEG C., wherein the catalysts, the ethylene/propylene/ethylidene norbornene terpolymer and/or the polyvinyl isobutyl ether and the monomer or comonomer mixture are added to the polymerization batch before adding the suspension agent or the suspension agent mixture. These suspension polymers are used as additives for polyvinyl chloride plastisols.
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Inventors:
GIRUBERUTO JIIRUFUERUTO
Application Number:
JP8282683A
Publication Date:
December 01, 1983
Filing Date:
May 13, 1983
Export Citation:
Assignee:
HUELS CHEMISCHE WERKE AG
International Classes:
C08F2/00; C08F2/18; C08F2/20; C08F14/00; C08F2/44; C08F14/06; C08F255/06; C08F261/06; (IPC1-7): C08F2/18; C08F2/44; C08F14/06
Attorney, Agent or Firm:
Toshio Yano
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