Title:
PRODUCTION OF VINYL CHLORIDE POLYMER
Document Type and Number:
Japanese Patent JPH07278209
Kind Code:
A
Abstract:
PURPOSE: To produce a vinyl chloride polymer reduced in initial coloration when molded.
CONSTITUTION: A process for producing a vinyl chloride polymer by suspension- polymerizing a vinyl chloride monomer alone or a mixture thereof with a comonomer in an aqueous medium, wherein an acetalized polyvinyl alcohol having a degree of acetalization of 4-70mol% and comprising repeating units of formulas I and II (wherein R is 1-11C linear or branched alkyl or hydrogen) is added as a dispersant to the reaction system.
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Inventors:
SHINKO TADASHI
NAKAMURA HIRONOBU
OKUBO MANABU
NAKAMURA HIRONOBU
OKUBO MANABU
Application Number:
JP7314294A
Publication Date:
October 24, 1995
Filing Date:
April 12, 1994
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
C08F14/06; C08F2/18; C08F2/20; C08F14/00; (IPC1-7): C08F2/20; C08F2/20; C08F14/06