Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR PRODUCING DICARBOXYLIC ACID CRYSTALS
Document Type and Number:
WIPO Patent Application WO/2018/230011
Kind Code:
A1
Abstract:
Provided is a method for producing C4 dicarboxylic acid crystals having high oil absorption. This method for producing C4 dicarboxylic acid crystals comprises a step in which C4 dicarboxylic acid crystals are precipitated from an aqueous solution containing a C4 dicarboxylic acid or salt thereof in the presence of an anionic polymer. The mass ratio of the anionic polymer content to the C4 dicarboxylic acid content in the aqueous solution is 5 x 10-4 to 0.5.

Inventors:
OBUNAI, Ryo (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
NOBA, Masahiro (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
IRIE, Yutaka (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
KOYAMA, Shingo (1334 Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
Application Number:
JP2017/043774
Publication Date:
December 20, 2018
Filing Date:
December 06, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KAO CORPORATION (14-10, Nihonbashi Kayabacho 1-chome Chuo-k, Tokyo 10, 〒1038210, JP)
International Classes:
C07C51/43; C07C51/353; C07C55/10; C07C57/15; C07B61/00
Foreign References:
JPS6038453A1985-02-28
JPH10273471A1998-10-13
JPH05279292A1993-10-26
JPS4742618A
JP2001019998A2001-01-23
JP2001511791A2001-08-14
JPS415729B11966-03-29
Attorney, Agent or Firm:
THE PATENT CORPORATE BODY ARUGA PATENT OFFICE (Sawanotsuru Ningyocho Bldg, 1-3-8 Nihonbashi Ningyocho, Chuo-k, Tokyo 13, 〒1030013, JP)
Download PDF: