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Title:
METHOD FOR PRODUCING POLYPROPYLENE-BASED RESIN HAVING BRANCHED STRUCTURE, METHOD FOR PRODUCING EXTRUSION-FOAMED PARTICLES, AND METHOD FOR PRODUCING FOAMED MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2022/163627
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a branched polypropylene-based resin having a high melt tension; and a method for producing the branched polypropylene-based resin. Provided is a production method comprising a first melt-kneading step for melt-kneading a polypropylene-based resin, a conjugated diene compound and a radical polymerization initiator in a first melt-kneading section and an ejection step for ejecting a polypropylene-based resin having a branched structure which has been produced in the first melt-kneading step through a die, in which the specific energy E1 is 0.35 kWh/kg or more.

Inventors:
SHIMODA, Mitsutaka (JP)
Application Number:
PCT/JP2022/002599
Publication Date:
August 04, 2022
Filing Date:
January 25, 2022
Export Citation:
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Assignee:
KANEKA CORPORATION (JP)
International Classes:
B29B9/06; B29K23/00; B29K105/04; C08F255/02; C08J9/18; C08J9/232; B29C67/20; B29B7/48; B29B7/72
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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