Composite hydrophilic membrane and method for manufacture thereo

Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

21050036, 210640, 521 27, B01D 1300

Patent

active

046701460

ABSTRACT:
A composite hydrophilic membrane comprising a very thin semipermeable hydrophilic membrane containing a sulfonic group and a polyethylenic microporous membrane containing sulfonic group. This hydrophilic membrane has specially high permeation rate of water and excellent separation ability.
The composite hydrophilic membrane is manufactured by a method which comprises fusing a very thin membrane containing an ethylenic copolymer onto the surface of a polyethylenic microporous membrane or a polyethylenic membrane capable of being converted into a microporous membrane thereby forming a composite film, converting the resin film prior to and/or during and/or after sulfonation into a microporous membrane, and causing the composite film to react with a sulfonating agent. This method permits easy and efficient production of the composite hydrophilic membrane.

REFERENCES:
patent: 3679538 (1972-07-01), Druin et al.
patent: 3925332 (1975-12-01), Haito et al.
patent: 3945927 (1976-03-01), Imai et al.
patent: 4199445 (1980-04-01), Chiang et al.
patent: 4409339 (1983-10-01), Matsuda et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Composite hydrophilic membrane and method for manufacture thereo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite hydrophilic membrane and method for manufacture thereo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite hydrophilic membrane and method for manufacture thereo will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-611811

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.