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Title:
AQUEOUS-SOLVENT SOLUTION OF IMIDE-GROUP-CONTAINING COMPOUND AND PRODUCTION METHOD FOR AQUEOUS-SOLVENT SOLUTION OF IMIDE-GROUP-CONTAINING COMPOUND
Document Type and Number:
WIPO Patent Application WO/2019/012722
Kind Code:
A1
Abstract:
Provided are: an aqueous-solvent solution of an imide-group-containing compound, the solution containing an imide-group-containing compound obtained by partially hydrolyzing a molded polyimide article; and a production method for the solution. The production method for the aqueous-solvent solution of an imide-group-containing compound comprises: (1) a preparation step in which a molded polyimide article is cut into pieces having a given size; (2) a step in which the pieces are hydrolyzed at a temperature of 50-100°C in the presence of water and a basic compound to obtain a solution-state crude imide-group-containing compound; (3) a step in which the solution-state crude imide-group-containing compound is purified to obtain the imide-group-containing compound in a semi-solid state; and (4) a step in which the semi-solid imide-group-containing compound, an aqueous solvent, and a given alkali compound are dissolved to form a given aqueous-solvent solution.

Inventors:
MATSUNO Takemi (82, Higashikawashima-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 41, 〒2400041, JP)
KITAGAWA Katsuji (82, Higashikawashima-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 41, 〒2400041, JP)
HANAZONO Misao (82, Higashikawashima-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 41, 〒2400041, JP)
Application Number:
JP2018/002652
Publication Date:
January 17, 2019
Filing Date:
January 29, 2018
Export Citation:
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Assignee:
NAKATA COATING CO., LTD. (82 Higashikawashima-cho, Hodogaya-ku Yokohama-sh, Kanagawa 41, 〒2400041, JP)
International Classes:
C08L79/08; B29B17/04; C08J11/28; C08K5/05; C08K5/10; C08K5/17
Domestic Patent References:
WO2012096374A12012-07-19
WO2015079717A12015-06-04
Foreign References:
JPS4719710B1
JP2011137063A2011-07-14
JP2015204133A2015-11-16
JPH083445A1996-01-09
JP2006124530A2006-05-18
JP2013087148A2013-05-13
JP2016121295A2016-07-07
JPS53142453A1978-12-12
JP5695675B22015-04-08
JP2016199749A2016-12-01
JPH08291252A1996-11-05
Other References:
See also references of EP 3453741A4
Attorney, Agent or Firm:
EMORI Kenji (Excel Shinjuku-Gyoen Building 5F, 11-3 Shinjuku 1-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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