Title:
A preparing method of cyclohexanedicarboxylic acid by polyester
Document Type and Number:
Japanese Patent JP6250104
Kind Code:
B2
Abstract:
The invention relates to a method of preparing cyclohexanedicarboxylic acid by using polyester. The method comprises steps that salt of IA group or IIA group elements of polyester and a periodic table of elements are distributed in alcohol solvent, and then the polyester is solved in terephthalic acid salt; the terephthalic acid salt is separated, and is distributed in the water or ion liquid to prepare terephthalic acid salt solvent, the PH value of which is adjusted to be in a range from 1 to 7; and finally, the terephthalic acid salt solvent is hydrogenated to acquire cyclohexanedicarboxylic acid. The method is advantageous in that the terephthalic acid sodium salt is directly hydrogenated to prepare the cyclohexanedicarboxylic acid, and therefore simple preparation steps are provided, and a conversion rate is improved by more than 60%.
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Inventors:
yellow virtue
Royal court
King Saga
Royal court
King Saga
Application Number:
JP2016126445A
Publication Date:
December 20, 2017
Filing Date:
June 27, 2016
Export Citation:
Assignee:
Far East New Century Co., Ltd.
International Classes:
C07C51/36; B01J23/46; C07C61/09
Domestic Patent References:
| JP7507041A | ||||
| JP2001151709A | ||||
| JP8253433A |
Attorney, Agent or Firm:
Takashi Onodera
Masao Sekiguchi
Masao Sekiguchi