POLY(ESTER-URETHANE), PRODUCTION METHOD THEREFOR, CYCLIC (ESTER-URETHANE)OLIGOMER, AND PRODUCTION METHOD THEREFOR

Title:

POLY(ESTER-URETHANE), PRODUCTION METHOD THEREFOR, CYCLIC (ESTER-URETHANE)OLIGOMER, AND PRODUCTION METHOD THEREFOR

Document Type and Number:

Japanese Patent JP2006063103

Kind Code:

A

Abstract:

To provide a biodegradable and chemically recyclable poly(ester-urethane) and to provide a method for producing the poly(ester-urethane) by a low environmental load process.

What is provided is: a poly(ester-urethane) comprising repeating units each represented by formula (1) (wherein x is an integer of 2 to 10; y is 2 or 3; and z is an integer of 2 to 6); a method for producing the poly(ester-urethane) comprising polymerizing a diurethanediol with a dialkyl dicarboxylate in the presence of a hydrolase in an organic solvent; a cyclic (ester-urethane) oligomer represented by formula (4) (wherein m is an integer of 1 to 8); a method for producing a poly(ester-urethane) comprising polymerizing the oligomer; and a method for producing the oligomer comprising depolymerizing the poly(ester-urethane).

Inventors:

MATSUMURA SHUICHI
SOEDA YASUYUKI

Application Number:

JP2004243924A

Publication Date:

March 09, 2006

Filing Date:

August 24, 2004

Export Citation:

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Assignee:

KEIO GIJUKU

International Classes:

C08G71/04; C12P13/00; C08G63/685; C08L101/16

Other References:

JPN6010035444, Ｔｅｋｈｎｏｌｏｇｉｙａ, 1986, Ｖｏｌ．２９，　Ｎｏ．６, ｐ．９４−９６
JPN6010035445, Ｍａｃｒｏｍｏｌ．　Ｂｉｏｓｃｉ．, 20040803, Ｖｏｌ．４，　Ｎｏ．８, ｐ．７２１−７２８
JPN6010035447, Ａｐｐｌ．　Ｅｎｖ．　Ｍｉｃｒｏｂｉｏｌ．, 1998, Ｖｏｌ．６４，　Ｎｏ．１, ｐ．６２−６７
JPN6010035449, 高分子学会予稿集, 20040510, Ｖｏｌ．５３，　Ｎｏ．１, ｐ．２２１４
JPN6010035451, 高分子加工, 20050325, Ｖｏｌ．５４，　Ｎｏ．３, ｐ．３１−３７
JPN6010035453, Ｍａｃｒｏｍｏｌ．　Ｂｉｏｓｃｉ．, 2005, Ｖｏｌ．５, ｐ．２７７−２８８

Attorney, Agent or Firm:

Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda

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