Chelating resin and process for making same

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

210688, 521 29, C08L 7900

Patent

active

045379378

ABSTRACT:
A resin chelating agent and process for making it are disclosed. The process comprises reacting the crosslinked product formed from the reaction of an aqueous suspension of a polyethyleneimine with a polycarboxylic acid with a mixture of a caustic agent comprising an alkali metal or alkaline earth metal hydroxide and carbon bisulfide to produce the finished resin. The resin can be produced in both head and powder form and is capable of selectively removing a large number of metallic contaminants from process and waste water streams. It is also essentially insensitive to the presence of alkali metal and alkaline earth metal ions dissolved in said streams.

REFERENCES:
patent: 3935098 (1976-01-01), Oda et al.
patent: 3951815 (1976-04-01), Wrasidlo
patent: 4404346 (1983-09-01), Pirotta et al.
J. Dingman, Jr., K. M. Gloss, E. A. Milano and S. Siggia, "Concentration of Heavy Metals by Complexation on Dithiocarbamate Resins", Analytical Chemistry, 46, No. 6, (May 1974), pp. 774-777.
D. S. Hackett and S. Siggia, "Selective Concentration and Determination of Trace Metals Using Poly(dithiocarbamate) Chelating Ion-Exchange Resins", Environmental Analysis, edited by G. W. Ewing, Academic Press, Inc., New York, New York, (1977), pp. 253-265.

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

Chelating resin and process for making same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chelating resin and process for making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chelating resin and process for making same will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2002277

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