MODIFIER FOR POLYLACTIC ACID AND POLYLACTIC ACID COMPOSITION CONTAINING THE MODIFIER

Title:

MODIFIER FOR POLYLACTIC ACID AND POLYLACTIC ACID COMPOSITION CONTAINING THE MODIFIER

Document Type and Number:

WIPO Patent Application WO/2003/080699

Kind Code:

A1

Abstract:

A modifier for polylactic acid which comprises a block polymer (C) which has a glass transition temperature of 0°C or lower and comprises a polymer block (A) satisfying the relationship 7.80=$g(s)/$g(r)<8.54 (wherein $g(s) indicates the solubility parameter of the polymer block and $g(r) indicates the density of the polymer block) and a polymer block (B) satisfying the relationship 8.54=$g(s)/$g(r)<9.20 (wherein $g(s) and $g(r) have the same meanings as defined above), the blocks (A) and (B) each independently being a polymer block selected from the group consisting of polyester, polyether, and polyhydroxycarboxylic acid blocks.

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Inventors:

IMAMURA SHOUJI (JP)
ARIGA TOSHIROU (JP)
FURUTA HIDEYUKI (JP)
MIHARA TAKASHI (JP)

Application Number:

PCT/JP2002/002915

Publication Date:

October 02, 2003

Filing Date:

March 26, 2002

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS (JP)
IMAMURA SHOUJI (JP)
ARIGA TOSHIROU (JP)
FURUTA HIDEYUKI (JP)
MIHARA TAKASHI (JP)

International Classes:

C08G63/02; C08G63/06; C08G63/60; C08G63/66; C08G65/00; C08G81/00; C08J5/18; C08L67/04; C08L65/00; C08L67/00; C08L67/02; (IPC1-7): C08G63/02; C08L67/04

Foreign References:

EP0723983A2

1996-07-31

Other References: