Invention Grant
- Patent Title: Hollow fiber membrane module and manufacturing method thereof
-
Application No.: US15308530Application Date: 2015-05-07
-
Publication No.: US10994248B2Publication Date: 2021-05-04
- Inventor: Akihiro Hayashi , Yoshiyuki Ueno
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JPJP2014-096589 20140508,JPJP2014-172296 20140827
- International Application: PCT/JP2015/063216 WO 20150507
- International Announcement: WO2015/170708 WO 20151112
- Main IPC: B01D71/68
- IPC: B01D71/68 ; B01D69/02 ; B01D69/08 ; B01D71/38 ; B01D63/02 ; B01D71/52 ; B01D65/02 ; B01D71/40 ; B01D71/44

Abstract:
Disclosed is a hollow fiber membrane module including a case and a hollow fiber membrane built in the case, wherein the hollow fiber membrane contains a polysulfone-based polymer and a hydrophilic polymer, and satisfies the following (A) and (B), and an amount of an eluted substance contained in a liquid obtained by circulating ultrapure water heated at 37° C. through a passage of an inner surface side of the hollow fiber membrane for 4 hours at 200 mL/min is 1.0 mg/m2 or less: (A) an insoluble component accounts for less than 3% by mass of the total mass of the hollow fiber membrane when the hollow fiber membrane is dissolved in N,N-dimethylacetamide; and (B) a flexible layer exists on a surface of a functional layer in a wet state and the flexible layer has a thickness of 7 nm or more. The present invention provides a hollow fiber membrane module including a hollow fiber membrane containing a polysulfone-based polymer and a hydrophilic polymer built therein, which elutes little eluted substance and exhibits high biocompatibility, while change in performance due to crosslinking of the hydrophilic polymer is suppressed.
Public/Granted literature
- US20170072371A1 HOLLOW FIBER MEMBRANE MODULE AND MANUFACTURING METHOD THEREOF Public/Granted day:2017-03-16
Information query