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Title:
METHOD FOR PRODUCING 2-HYDROXYISOBUTYRIC ACID POLYMER AND METHOD FOR DEPOLYMERIZING SAME
Document Type and Number:
WIPO Patent Application WO/2010/071019
Kind Code:
A1
Abstract:
To recycle a 2-hydroxyisobutyric acid polymer resource, which is excellent in terms of heat resistance, structural stability and resource recyclability, by using a renewable resource as a starting material.  A method for producing a 2-hydroxyisobutyric acid polymer which comprises using, as a starting material for producing the 2-hydroxyisobutyric acid polymer, 2-hydroxyisobutyric acid or a derivative thereof that is obtained from a renewable resource, conducting polymerization, and then treating the thus obtained 2-hydroxyisobutyric acid polymer with an acidic substance to thereby stabilize the polymer; and a method for depolymerizing a 2-hydroxyisobutyric acid polymer which comprises solvolyzing the polymer in the presence of water and/or an alcohol or thermally degrading the polymer with or without the use of a catalyst to give a starting material such as 2-hydroxyisobutyric acid or methacrylic acid.

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Inventors:
NISHIDA HARUO (JP)
IDE SEIJI (JP)
SHIRAI YOSHIHITO (JP)
IWAMOTO HIROSHI (JP)
Application Number:
PCT/JP2009/070227
Publication Date:
June 24, 2010
Filing Date:
December 02, 2009
Export Citation:
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Assignee:
KYUSHU INST TECHNOLOGY (JP)
ENVIRONMENTAL TECHNOLOGY SERVI (JP)
NISHIDA HARUO (JP)
IDE SEIJI (JP)
SHIRAI YOSHIHITO (JP)
IWAMOTO HIROSHI (JP)
International Classes:
C08G63/88; C08G63/06; C08G63/83; C08J11/16; C08J11/24; C07B61/00; C07C59/01; C07C69/675; C08L101/16
Foreign References:
JPH10251394A1998-09-22
JPS63222696A1988-09-16
JPH07309863A1995-11-28
JP2000053753A2000-02-22
JPH10204158A1998-08-04
JPS5988093A1984-05-21
Attorney, Agent or Firm:
MAEDA SUMIHIRO (JP)
Sumihiro Maeda (JP)
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