Title:
PRODUCTION OF VINYL CHLORIDE POLYMER
Document Type and Number:
Japanese Patent JP3385643
Kind Code:
B2
Abstract:
PURPOSE: To produce a vinyl chloride polymer which gives a molded article excellent in heat stability, almost free from fish eye, and practically nontoxic.
CONSTITUTION: This vinyl chloride polymer is produced by subjecting vinyl chloride or a mixture thereof with a monomer copolymerizable therewith to the suspension polymn. in an aq. medium in the presence of an oil-sol. polymn. initiator and a dispersion stabilizer which comprises a partially saponified polyvinyl alcohol having a degree of saponification of 70-90mol% and an average degree of polymn. of 1,500-3,000, a partially saponified polyvinyl alcohol having a degree of saponification of 70-90mol% and an average degree of polymn. of 300-1,000, a secondary dispersant, and a water-sol. cellulose ether.
Inventors:
Hashino Daisaku
Toshihiko Tanaka
Hiroshi Kaneko
Masayoshi Honda
Toshihiko Tanaka
Hiroshi Kaneko
Masayoshi Honda
Application Number:
JP6547593A
Publication Date:
March 10, 2003
Filing Date:
March 24, 1993
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
C08F2/20; C08F2/18; C08F2/38; C08F14/00; C08F14/06; C08K5/56; C08K5/57; C08L27/06; C08L29/00; C08L89/00; (IPC1-7): C08F2/20; C08F2/38; C08F14/00; C08K5/56; C08K5/57; C08L27/06
Domestic Patent References:
| JP5222104A |