USE OF ETHYLENE/$g(a)-OLEFIN COPOLYMER AND USE OF ETHYLENE COPOLYMER COMPOSITION

Title:

USE OF ETHYLENE/$g(a)-OLEFIN COPOLYMER AND USE OF ETHYLENE COPOLYMER COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2000/053648

Kind Code:

A1

Abstract:

A film, sheet, packaging material, injection molding, foam molding, fiber, etc. excellent in any of mechanical strength, heat resistance, and transparency, which are made of: an ethylene/C¿6-8? $g(a)-olefin copolymer (A) in which the melt tension and the MFR satisfy a specific relationship and the flow activation energy determined from the shift factor of time-temperature superposition in a flow curve, the number of carbon atoms of the $g(a)-olefin in the copolymer, and the content of the $g(a)-olefin in the copolymer satisfy a specific relationship and which through inflation gives a 30 $g(m)m-thick film which has a haze satisfying a specific relationship; or an ethylene copolymer composition (A') which has substantially the same composition as the copolymer (A) and comprises an ethylene/C¿6-8? $g(a)-olefin copolymer (B) and an ethylene/C¿6-8? $g(a)-olefin copolymer (C) and in which there is a specific relationship between the MFR of the copolymer (C) and that of the copolymer (B).

Inventors:

TAKAHASHI MAMORU (JP)
NAKAGAWA TAKASHI (JP)
SUGIMURA KENJI (JP)
YOSHITSUGU KEN (JP)

Application Number:

PCT/JP1999/001143

Publication Date:

September 14, 2000

Filing Date:

March 10, 1999

Export Citation:

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Assignee:

MITSUI CHEMICALS INC (JP)
TAKAHASHI MAMORU (JP)
NAKAGAWA TAKASHI (JP)
SUGIMURA KENJI (JP)
YOSHITSUGU KEN (JP)

International Classes:

C08F4/642; C08L23/08; D01F6/30; H01B3/44; (IPC1-7): C08F210/16; C08F4/642; C08J5/18; C08J9/04; C08L23/08; D01F6/30; H01B3/44; H01B7/18

Foreign References:

JPH06206939A	1994-07-26
JPH06207057A	1994-07-26
JPH07309908A	1995-11-28

Other References: