Polyamine-polyamide composite nanofiltration membrane for water

Details Polyamine-polyamide composite nanofiltration membrane for water Polyamine-polyamide composite nanofiltration membrane for water

1990-09-14

1992-10-06

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210490, 21050037, 21050038, B01D 6108

Patent

active

051529017

ABSTRACT:
A thin film composite (TPC) ultrafilter/hyperfilter water softening membrane on a microporous substrate is produced by an interfacial polymerization reaction between (1) an aqueous phase comprising a blend of water soluble and water dispersible compounds, the former containing piperazine and polyamines, the latter using a chlorine or other oxidant reacting compound which protects the resulting membrane from damage by any chlorine present and (2) an organic phase comprising polyfunctional agents capable of reacting and/or polmerizing with one or more of the ingredients of said aqueous phase.

REFERENCES:
patent: 3647086 (1972-03-01), Mizutani et al.
patent: 4659475 (1989-04-01), Liao, et al.
patent: 4913816 (1990-04-01), Waite

Affiliated with

Also associated with

Rating

Polyamine-polyamide composite nanofiltration membrane for water does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyamine-polyamide composite nanofiltration membrane for water , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyamine-polyamide composite nanofiltration membrane for water will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1187127