MODIFIED OLEFIN (CO)POLYMER COMPOSITION, PROCESS FOR PREPARING THE SAME, AND MODIFIED OLEFIN (CO)POLYMER COMPOSITION MOLDING

Title:

MODIFIED OLEFIN (CO)POLYMER COMPOSITION, PROCESS FOR PREPARING THE SAME, AND MODIFIED OLEFIN (CO)POLYMER COMPOSITION MOLDING

Document Type and Number:

WIPO Patent Application WO/1998/044042

Kind Code:

A1

Abstract:

A high-molecular weight polyethylene prepared by prepolymerization is added at the time of main polymerization of an olefin, for example, propylene, to prepare an olefin (co)polymer composition comprising the above high-molecular polyethylene finely dispersed as fine particles in the polyolefin, such as polypropylene, and a cross-linked structure is formed in the olefin (co)polymer composition. This process can provide a modified olefin (co)polymer composition improved in the strength in a molten state in terms of melt tension or the like and in crystallization temperature and excellent in moldability such as high-speed producibility, and a modified olefin (co)polymer composition molding excellent in properties such as heat resistance and rigidity.

Inventors:

YAMAUCHI AKIRA (JP)
KIKUKAWA SHINGO (JP)
SAITO JUN (JP)
SATO HITOSHI (JP)

Application Number:

PCT/JP1998/001387

Publication Date:

October 08, 1998

Filing Date:

March 26, 1998

Export Citation:

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Assignee:

CHISSO CORP (JP)
YAMAUCHI AKIRA (JP)
KIKUKAWA SHINGO (JP)
SAITO JUN (JP)
SATO HITOSHI (JP)

International Classes:

C08F4/646; C08F4/654; C08F4/658; C08F10/00; C08F255/02; C08L23/04; C08L23/06; C08L23/10; C08L51/06; C08F110/02; C08F210/06; (IPC1-7): C08L23/02; C08L23/26; C08K5/14; C08F4/654

Foreign References:

JPH1017736A	1998-01-20
JPH0455410A	1992-02-24
JPH05222122A	1993-08-31

Other References: