Polyalkylene resins crosslinked with diisocyanate used for selec

Details Polyalkylene resins crosslinked with diisocyanate used for selec Polyalkylene resins crosslinked with diisocyanate used for selec

1981-04-06

1983-01-18

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

525417, 528 68, C08G 1800

Patent

active

043692567

ABSTRACT:
A novel polyaminic resin obtained by crosslinking a polyalkyleneamine (in particular polyethyleneamine) with diisocyanates in solution, is useful as a selective separation or extraction agent of a component having a "complementary" chemical structure (particularly heparin), by means of mere contact or "ionic exchange" with aqueous solutions containing it. Heparin is thus even quantitatively extracted from solutions containing it alone or in mixture with other glucosaminoglycanes. The polyamine can then release the "adsorbed" heparin and be recovered by a treatment with saline solutions. The novel resin is used in pharmaco-biological fields.

REFERENCES:
patent: 3325346 (1967-06-01), Osborg

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