Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ASYMMETRIC MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2019/151337
Kind Code:
A1
Abstract:
An asymmetric membrane containing a crosslinked polyimide resin comprising a polyimide resin crosslinked with a crosslinking agent, wherein the polyimide resin has a constituent unit (A) derived from a tetracarboxylic acid dianhydride and a constituent unit (B) derived from a diamine, the constituent unit (A) contains a constituent unit (A-1) derived from a compound represented by formula (a-1), the constituent unit (B) contains a constituent unit (B-1) derived from formula (b-1), the content of the constituent unit (B-1) in 100 mol% of the constituent unit (B) is 0.1 to 50 mol%, and the cross-linking agent is a compound containing at least two functional groups each capable of binding to a carboxy group. (In formula (b-1), Q1 and Q2 independently represent a group containing an aromatic group, an aliphatic hydrocarbon group and/or an alicyclic hydrocarbon group, X represents a single bond or a specific group, p represents an integer of 0 to 2, m1 represents an integer of 0 to 4, and m2 represents an integer of 0 to 4, wherein, when p represents 0, m1 represents an integer of 1 to 4.)

Inventors:
KAWAI, Ryuichiro (Mitsubishi Gas Chemical Company Inc., 1-1, Niijuku 6-chome Katsushika-k, Tokyo 01, 〒1258601, JP)
YAMAMOTO,Takashi (Mitsubishi Gas Chemical Company Inc., 1-1, Niijuku 6-chome Katsushika-k, Tokyo 01, 〒1258601, JP)
OHNO, Daisuke (Mitsubishi Gas Chemical Company Inc., 1-1, Niijuku 6-chome Katsushika-k, Tokyo 01, 〒1258601, JP)
ABIKO, Yohei (Mitsubishi Gas Chemical Company Inc., 6-2, Higashiyawata 5-chome, Hiratsuka-sh, Kanagawa 16, 〒2540016, JP)
OKA, Hiroaki (Mitsubishi Gas Chemical Company Inc., 10, Mizushima Kaigandori 3-chome, Kurashiki-sh, Okayama 25, 〒7128525, JP)
SUENAGA, Shuya (Mitsubishi Gas Chemical Company Inc., 6-2, Higashiyawata 5-chome, Hiratsuka-sh, Kanagawa 16, 〒2540016, JP)
TAKADA, Takafumi (Mitsubishi Gas Chemical Company Inc., 6-2, Higashiyawata 5-chome, Hiratsuka-sh, Kanagawa 16, 〒2540016, JP)
HARIU, Tomohiro (Mitsubishi Gas Chemical Company Inc., 6-2, Higashiyawata 5-chome, Hiratsuka-sh, Kanagawa 16, 〒2540016, JP)
Application Number:
JP2019/003204
Publication Date:
August 08, 2019
Filing Date:
January 30, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI GAS CHEMICAL COMPANY, INC. (5-2 Marunouchi 2-chome, Chiyoda-ku Tokyo, 24, 〒1008324, JP)
International Classes:
B01D71/64; B01D69/06; B01D69/08; C08G73/10
Domestic Patent References:
WO2011099518A12011-08-18
WO2018088543A12018-05-17
Foreign References:
JP2017176986A2017-10-05
JP2017133027A2017-08-03
JP2018122280A2018-08-09
Attorney, Agent or Firm:
HIRASAWA, Kenichi (OHTANI PATENT OFFICE, Toranomon ES Bldg. 7F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
Download PDF: