Title:
METHOD FOR PRODUCING FOAMABLE STYRENIC RESIN PARTICLE
Document Type and Number:
Japanese Patent JP2022101097
Kind Code:
A
Abstract:
To provide a method for producing foamable styrenic resin particles which enables easy production of a styrenic resin foam particle molding that has excellent flame retardancy and has small contents of styrene and benzene.SOLUTION: There is provided a method for producing formable styrenic resin particles containing a flame retardant and a foaming agent by a polymerization step. The polymerization step adds a styrenic monomer in which a flame retardant is dissolved in an aqueous medium, and performs suspension polymerization. The polymerization step uses an aliphatic peroxy ester type and/or an aliphatic peroxy ketal type first organic peroxide having a 10 hr half-life temperature of 65°C or higher and 90°C or lower, and a second organic peroxide having a 10 hr half-life temperature of higher than 90°C and 110°C or lower, as polymerization initiators. The flame retardant is a bromide of a styrene-butadiene-based copolymer.SELECTED DRAWING: None
Inventors:
FUJII MOTOKI
SHIMA MASAOMI
NISHINO SATOSHI
SHIMA MASAOMI
NISHINO SATOSHI
Application Number:
JP2020215484A
Publication Date:
July 06, 2022
Filing Date:
December 24, 2020
Export Citation:
Assignee:
JSP CORP
International Classes:
C08J9/18; C08F2/44; C08F4/38; C08F257/00; C08F279/02; C08K5/01; C08L25/00
Attorney, Agent or Firm:
Patent Business Corporation Aichi International Patent Office
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