PROCESS FOR PRODUCING MODIFIED BUTENE-1 POLYMER AND MODIFIED BUTENE-1 POLYMER OBTAINED BY THE PROCESS

Title:

PROCESS FOR PRODUCING MODIFIED BUTENE-1 POLYMER AND MODIFIED BUTENE-1 POLYMER OBTAINED BY THE PROCESS

Document Type and Number:

WIPO Patent Application WO/2003/070786

Kind Code:

A1

Abstract:

A process for producing a butene-1 polymer which: (a) is a crystalline resin having a melting point (Tm-D), defined as the temperature corresponding to the top of the peak observed on the highest-temperature side in a melting endothermic curve obtained by DSC analysis in which a sample in a nitrogen atmosphere is held at -10°C for 5 minutes and then heated at a rate of 10 °C/min, of 0 to 100°C; (b) has a stereoregularity index represented by [mmmm]/([mmrr]+[rmmr]) of 20 or lower; and (c) has a weight-average molecular weight (Mw) of 10,000 to 1,000,000 and a weight-average molecular weight/number-average molecular weight ratio (Mw/Mn) of 4.0 or lower. Also provided are: a modified butene-1 polymer obtained by modifying the butene-1 polymer with a free-radical initiator and an organic acid; and an adhesive composition containing the modified butene-1 polymer. The modified butene-1 polymer can impart high adhesion, high strength, flexibility, etc. to polyolefins, etc. It gives a highly adhesive sealant or a polyolefin having improved compatibility with inorganic fillers, etc. It is especially useful as a resin for hot-melt adhesives.

Inventors:

KANAMARU MASAMI (JP)
MINAMI YUTAKA (JP)
ABURATANI RYO (JP)
TATSUMI TOMIO (JP)

Application Number:

PCT/JP2003/001792

Publication Date:

August 28, 2003

Filing Date:

February 19, 2003

Export Citation:

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Assignee:

IDEMITSU PETROCHEMICAL CO (JP)
KANAMARU MASAMI (JP)
MINAMI YUTAKA (JP)
ABURATANI RYO (JP)
TATSUMI TOMIO (JP)

International Classes:

C08F8/00; C08F8/46; C08F255/00; C08F255/10; C08F257/02; C08L51/00; C08L51/06; C09J123/20; C09J151/00; C09J151/06; C08L23/20; (IPC1-7): C08F8/46; C08F255/10; C09J123/30; C09J151/06

Foreign References:

JPS59206415A	1984-11-22
JPS619477A	1986-01-17

Other References: