Title:
SUSPENSION POLYMERIZATION METHOD OF VINYL CHLORIDE-BASED RESIN, AND VINYL CHLORIDE-BASED RESIN AND VINYL CHLORIDE-BASED RESIN MOLDING OBTAINED BY THE SAME
Document Type and Number:
Japanese Patent JP2023093313
Kind Code:
A
Abstract:
To provide a suspension polymerization method which stabilizes polymerization and prevents adhesion of a united substance of a vinyl chloride-based resin in a polymerization vessel, when a basic inorganic matter is added into a suspension polymerization system and is polymerized, and a vinyl chloride-based resin and a vinyl chloride-based resin molding obtained by the same.SOLUTION: A suspension polymerization method of a vinyl chloride-based resin includes a step of suspending and polymerizing one or more kinds of vinyl chloride-based monomers selected from a vinyl chloride solely, and a polymerizable monomer having a vinyl chloride, in the presence of a basic inorganic matter, wherein the step adds a pH adjusting agent into a polymerization system until the completion of the polymerization, and maintains a pH to 8.5 or less.SELECTED DRAWING: None
Inventors:
EGUCHI NOZOMI
NAKAO RYOSUKE
NAKAO RYOSUKE
Application Number:
JP2022140535A
Publication Date:
July 04, 2023
Filing Date:
September 05, 2022
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
C08F14/06; C08F2/18; C08K3/26; C08K3/34; C08K9/04; C08L27/06
Attorney, Agent or Firm:
Masahiro Taguchi
Shigeo Torayama
Shigeo Torayama
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