EXPANDED POLYPROPYLENE RESIN BEAD AND PROCESS OF PRODUCING SAME

Title:

EXPANDED POLYPROPYLENE RESIN BEAD AND PROCESS OF PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO2002024794

Kind Code:

A9

Abstract:

Expanded, substantially non-crosslinked polypropylene resin beads capable of producing a high rididity foamed molding at a relatively low temperature. The beads are produced by a process including a step of dispersing substantially non-crosslinked polypropylene resin particles in a dispersing medium containing an organic peroxide to obtain a dispersion, a step of heating the dispersion to decompose the organic peroxide and to modify the surface of the surface-modified polypropylene resin particles, and a step of expanding the non-crosslinked, surface-modified polypropylene resin particles using a blowing agent.

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Inventors:

SASAKI HIDEHIRO (JP)
HIRA AKINOBU (JP)
HASHIMOTO KEIICHI (JP)
TOKORO HISAO (JP)

Application Number:

PCT/JP2001/008187

Publication Date:

May 10, 2002

Filing Date:

September 20, 2001

Export Citation:

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Assignee:

JSP CORP (JP)
SASAKI HIDEHIRO (JP)
HIRA AKINOBU (JP)
HASHIMOTO KEIICHI (JP)
TOKORO HISAO (JP)

International Classes:

C08J9/224; C08L23/10; (IPC1-7): C08J9/18

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