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Patent Searching and Data


Title:
METHOD FOR PRODUCING LONG-CHAIN DICARBOXYLIC ACID
Document Type and Number:
Japanese Patent JP2014070031
Kind Code:
A
Abstract:

To provide a novel long-chain dicarboxylic acid that becomes a liquid with less coloration when melted, and a method for producing the same.

A method for producing a long-chain dicarboxylic acid that becomes liquid with less coloration when melted, comprises extracting and removing a turbidity component and a coloration component which are the impurities contained in crude long-chain dicarboxylic acid, by using an organic solvent of at least 4.5 times the amount and water of at least 2 times the amount of the weight of the long-chin dicarboxylic acid contained in the crude long-chain dicarboxylic acid. Also, there is provided a long-chain dicarboxylic acid produced by the method.


Inventors:
Nomura, Tadayoshi
Senba, Takashi
Baba, Hideyuki
Application Number:
JP2012000215740
Publication Date:
April 21, 2014
Filing Date:
September 28, 2012
Export Citation:
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Assignee:
NIPPON SHOKUBAI CO LTD
International Classes:
C07C51/48; C07C51/43; C07C55/02; C12P7/44; C12R1/74