Title:
EXPANDABLE RESIN COMPOSITION AND PRODUCTION OF EXPANDED POLYPROPYLENE RESIN
Document Type and Number:
Japanese Patent JP3538441
Kind Code:
B2
Abstract:
PURPOSE: To produce an expanded polypropylene resin having uniform and fine foams and having excellent properties.
CONSTITUTION: The title production process comprises mixing 100 pts.wt. polypropylene resin with 0.1-40 pts.wt. expandable resin composition prepared by mixing 100 pts.wt. ethylene/1-butene copolymer with 5-100 pts.wt. foaming agent and melt-kneading the obtained mixture at a temperature below the decomposition temperature of the foaming agent, and expanding the resulting mixture by heating to a temperature equal to or higher than the decomposition temperature of the foaming agent.
Inventors:
Fujii, Yasuhisa
Serizawa, Hajime
Serizawa, Hajime
Application Number:
JP21422193A
Publication Date:
June 14, 2004
Filing Date:
August 30, 1993
Export Citation:
Assignee:
POLYPLASTICS CO
International Classes:
C08J5/04; C08J9/06; C08L23/00; C08L23/08; C08L23/10; (IPC1-7): C08J9/06
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