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Patent Searching and Data


Title:
METHOD FOR PRODUCING TRANS, TRANS-4,4'-BICYCLOHEXYL DICARBOXYLIC ACID
Document Type and Number:
Japanese Patent JP2004307468
Kind Code:
A
Abstract:

To provide a method for isomerizing a c,c-form and c,t-form in an isomeric mixture of 4,4'-bicyclohexyl dicarboxylic acids (BCHDA) to a t,t-form exhibiting a high melting point efficiently in a short time.

This method for producing t,t-BCHDA is provided by holding a mixture of cis, cis-4,4'-bicyclohexyl dicarboxylic acid, cis, trans-4,4'-bicyclohexyl dicarboxylic acid and trans, trans-4,4'-bicyclohexyl dicarboxylic acid under an inert gas atmosphere within a temperature range higher than the melting point of t,t-BCHDA.


Inventors:
ENDOU HIROYOSHI
Application Number:
JP2004020387A
Publication Date:
November 04, 2004
Filing Date:
January 28, 2004
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP
International Classes:
C07C51/43; C07B61/00; C07C61/08; (IPC1-7): C07C51/43; C07C61/08
Attorney, Agent or Firm:
Hasegawa Soji