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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.

Inventors:
Imamura, Shouji (2-15-13, Ohsakidai Sakura-shi, Chiba, 285-0817, JP)
Ariga, Toshirou (1-39-5-B302, Higashi-abiko Abiko-shi, Chiba, 270-1144, JP)
Furuta, Hideyuki (4-5-1, Ohmiyadai Wakaba-k, Chiba-shi Chiba, 264-0015, JP)
Mihara, Takashi (1-27-1-B-308, Ohsakidai Sakura-shi, Chiba, 285-0817, 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 AND CHEMICALS, INC. (35-58, Sakashita 3-chome Itabashi-ku, Tokyo, 174-8520, JP)
Imamura, Shouji (2-15-13, Ohsakidai Sakura-shi, Chiba, 285-0817, JP)
Ariga, Toshirou (1-39-5-B302, Higashi-abiko Abiko-shi, Chiba, 270-1144, JP)
Furuta, Hideyuki (4-5-1, Ohmiyadai Wakaba-k, Chiba-shi Chiba, 264-0015, JP)
Mihara, Takashi (1-27-1-B-308, Ohsakidai Sakura-shi, Chiba, 285-0817, 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
Other References:
See also references of EP 1489121A1
Attorney, Agent or Firm:
Shiga, Masatake (Shiga International Patent Office, 2-3-1 Yaesu Chuo-ku, Tokyo, 104-8453, JP)
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