Title:
PRODUCTION OF VINYL CHLORIDE-BASED POLYMER POWDER
Document Type and Number:
Japanese Patent JPH04202503
Kind Code:
A
Abstract:
PURPOSE:To obtain the title powder having excellent fluidity, hardly charging with electricity, suppressing reduction in bulk density by polymerizing a vinyl chloride-based monomer in an aqueous medium and after reaching a specific polymerization ratio, adding a small amount of a tetrafluoroethylene resin having specific particle diameter to the polymerization system. CONSTITUTION:A vinyl-based monomer containing a vinyl chloride monomer is polymerized in an aqueous medium and after polymerization ratio reaches 70%, 0.001-1.0 pt.wt. based on 100 pts.wt. of the vinyl-based monomer of a tetrafluoroethylene resin having 0.5-50mum average particle diameter is added to the polymerization system to give the objective powder.
Inventors:
AMANO TADASHI
SHIGEMITSU MINORU
SHIGEMITSU MINORU
Application Number:
JP33886990A
Publication Date:
July 23, 1992
Filing Date:
November 30, 1990
Export Citation:
Assignee:
SHINETSU CHEMICAL CO
International Classes:
C08F2/44; C08F259/00; C08F259/08; (IPC1-7): C08F2/44; C08F259/08
Attorney, Agent or Firm:
Yoshio Komiya