Title:
PRODUCTION METHOD FOR ALIPHATIC POLYESTER POLYMER, AND ALIPHATIC POLYESTER POLYMER
Document Type and Number:
Japanese Patent JP3479810
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide for industrially advantageously producing an aliphatic polyester polymer excellent in mechanical strengths and color tone at a highly practical polymerization rate.
SOLUTION: A mixture (1) of at least one aliphatic dicarboxylic acid compound selected from among aliphatic dicarboxylic acids and their diesters and anhydrides with an aliphatic diol or a precondensate (11) of the mixture (1) is used as a reaction material. The material is subjected to polycondensation in the presence of a reaction catalyst comprising a metal-containing transesterification catalyst and a cocatalyst, thus giving the objective aliphatic polyester polymer. The cocatalyst comprises at least one phosphorus compound selected from among organic phosphinic acids, hydrogen-containing ammonium phosphate salts, hydrogen-containing ammonium polyphosphate salts, hydrogen- containing calcium phosphate salts, and hydrogen-containing calcium polyphosphate salts.
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Inventors:
Takashi Masuda
Cao Amin
Cao Amin
Application Number:
JP2001275696A
Publication Date:
December 15, 2003
Filing Date:
September 11, 2001
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
Takashi Masuda
Takashi Masuda
International Classes:
C08G63/87; C08L101/16; (IPC1-7): C08G63/87
Domestic Patent References:
| JP2001131276A |
Other References:
【文献】特許3292874(JP,B2)
Attorney, Agent or Firm:
Toshiaki Ikeura