The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2013
Filed:
Sep. 30, 2008
Applicants:
Masaki Tsuzawa, Akashi, JP;
Hideto Matsuyama, Kobe, JP;
Inventors:
Masaki Tsuzawa, Akashi, JP;
Hideto Matsuyama, Kobe, JP;
Assignee:
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/68 (2006.01); B01D 69/08 (2006.01); B01D 69/06 (2006.01); B01D 67/00 (2006.01); B01D 63/02 (2006.01); B01D 63/08 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0011 (2013.01); B01D 69/08 (2013.01); B01D 63/021 (2013.01); B01D 63/081 (2013.01); B01D 67/0009 (2013.01); B01D 67/0018 (2013.01); B01D 67/0013 (2013.01); B01D 69/06 (2013.01);
Abstract
A dope solution for membrane production comprising polyethersulfone having high strength, high water permeability, a high rejecting ability and excellent contamination resistance, a separation membrane, and a process for producing the separation membrane are provided. The dope solution for membrane production contains a polyethersulfone and a solvent for thermally induced phase separation selected from the group consisting of 3-pyridinemethanol, 4-methyl-1,3-dioxolane-2-one, 4-benzylpiperidine, trimethyl phosphate, 1,3-dioxolane-2-one and mixtures thereof.