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Title:
METHOD FOR PRODUCING USEFUL CHEMICAL SUBSTANCE FROM TEREPHTHALIC ACID POTASSIUM SALT
Document Type and Number:
WIPO Patent Application WO/2013/111332
Kind Code:
A1
Abstract:
When a terephthalic acid salt which contains potassium in an amount of 0.5 to 2 times inclusive the total amount of all of terephthalic acid moieties contained in the terephthalic acid salt in terms of molar content is used as a raw material, it becomes possible to produce TPA-DHD using a microorganism capable of expressing terephthalate 1,2-dioxygenase. In addition, it also becomes possible to convert TPA-DHD into protocatechuic acid with TPA-DHD dehydrogenase and convert protocatechuic acid into gallic acid with para-hydroxybenzoate hydroxylase. A wasted polyester can be depolymerized with high efficiency by heating the polyester in an ethylene glycol or 1-butanol solvent containing potassium hydroxide, thereby preparing potassium terephthalate that can be used suitably for the production of a chemical substance with a microorganism.

Inventors:
NUKUI NORIYUKI (JP)
YAO MAKI (JP)
NISHIZAWA AKITO (JP)
NISHI TATSUNARI (JP)
Application Number:
PCT/JP2012/051854
Publication Date:
August 01, 2013
Filing Date:
January 27, 2012
Export Citation:
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Assignee:
GENARIS INC (JP)
NUKUI NORIYUKI (JP)
YAO MAKI (JP)
NISHIZAWA AKITO (JP)
NISHI TATSUNARI (JP)
International Classes:
C12P7/42; C12N15/09; C08J11/16; C12R1/19
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WO2005082826A12005-09-09
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Attorney, Agent or Firm:
KAWAGUCHI, Yoshiyuki et al. (JP)
Yoshiyuki Kawaguchi (JP)
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