Polymeric compositions for membranes

Details Polymeric compositions for membranes Polymeric compositions for membranes

Filed on

1976-11-10

Date issued

1980-06-10

Examiner

Spear, Jr., Frank A.

Patent Class

Liquid purification or separation

SubClass

With alarm, indicator, register, recorder, signal or...

SubSubClass

Responsive to fluid flow

Other Related Categories

210490, 210500M, 264 455, 427246, 428304, 521 27, B01D 1300, C08G 2300

Type

Patent

Status

active

Patent number

042071828

Description

ABSTRACT:
A mixture of at least one non-sulphonated polysulphone and at least one sulphonated polysulphone, this mixture consisting of 10 to 30% by weight of a sulphonated polysulphone which has a theoretical exchange capacity of from 500 to 1,200 meq/kg is provided. Such mixtures enable one to obtain semi-permeable membranes using relatively concentrated solutions of the mixtures. The resulting membranes are particularly suitable for use in ultrafiltration.

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3709841 (1973-01-01), Quentin
patent: 3868314 (1975-02-01), Mizutani et al.
patent: 4026977 (1977-05-01), Bourganel
patent: 4029582 (1977-06-01), Ishii et al.
patent: 4035291 (1977-07-01), Chiang et al.

Affiliated with

Also associated with

Rating

Polymeric compositions for membranes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymeric compositions for membranes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymeric compositions for membranes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-861889