Composite semipermeable membrane and process for preparation the

Details Composite semipermeable membrane and process for preparation the Composite semipermeable membrane and process for preparation the

1986-01-16

1988-04-12

Spear, Frank

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

21050037, 21050042, 427245, 427246, B01D 1300

Patent

active

047373253

ABSTRACT:
A composite semipermeable membrane and a process for preparation thereof are described, wherein said membrane comprises (1) a porous substrate, (2) an ultrathin film as a surface layer formed by polymerization by crosslinking of polyvinyl alcohol and an amino compound having at least two secondary amino groups using a polyfunctional crosslinking reagent capable of reacting with secondary amino groups and hydroxyl groups, and (3) a porous inner layer composed of water insoluble polyvinyl alcohol which is present between the porous substrate and the ultrathin film.

REFERENCES:
patent: 4242208 (1980-12-01), Kawaguchi et al.
patent: 4337154 (1982-06-01), Fukucth et al.
patent: 4353802 (1982-10-01), Hara et al.

Affiliated with

Also associated with

Rating

Composite semipermeable membrane and process for preparation the 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 semipermeable membrane and process for preparation the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite semipermeable membrane and process for preparation the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1428301