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. 31, 2021
Filed:
Mar. 30, 2018
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/18 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01);
U.S. Cl.
CPC ...
B01D 71/18 (2013.01); B01D 67/002 (2013.01); B01D 67/0023 (2013.01); B01D 67/0088 (2013.01); B01D 69/02 (2013.01); B01D 2323/18 (2013.01); B01D 2323/20 (2013.01); B01D 2325/24 (2013.01);
Abstract
The purpose of the present invention is to provide: a separation film that consists primarily of a cellulose ester and has a high membrane strength and a high elongation degree; and a production method therefor. Provided is a separation film which has a structure comprising a cellulose ester phase and pores, wherein the average pore diameter R is 0.001-6 μm, the value obtained from the expression: breaking strength (MPa)÷(100−porosity (%))×100 is 40 or greater, and the elongation degree is 10% or greater.