Substituted and crosslinked glucans, process and intermediates f

Details Substituted and crosslinked glucans, process and intermediates f Substituted and crosslinked glucans, process and intermediates f

1986-06-18

1989-05-30

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 20, 536 185, 536 552, 536 553, 514 54, 514 62, C07H 504, C07H 506, C07B 3708

Patent

active

048352659

ABSTRACT:
Glucans substituted by reacting oxo acids with the amino groups of a chitosan or of a polyglucosamine, reducing the imines thus formed and crosslinking the thus obtained compounds to yield gels having high adsorbing power and interaction selectivity with metal ions even in acid or highly saline medium.

REFERENCES:
patent: 437309 (1983-02-01), Koshugi
patent: 3879376 (1975-04-01), Vanlerberghe et al.
patent: 4125708 (1978-11-01), Masri et al.
patent: 4424346 (1984-01-01), Hall et al.
patent: 4683298, Yalpani
Biotechnology & Bioengineering, Daniel I. C. Wang, vol. 27, Aug. 1985, pp. 1115-1121.
N-(Carboxymethylidene)Chitosans and N-(Carboxymethyl)-Chitosans: Novel Chelating Polyampholytes Obtained From Chitosan Glyoxylate Riccardo A. A. Muzzarelli et al., (1982), pp. 199-214.
N-(o-Carboxybenzyl) Chitosans: Novel Chelating Polyampholytes, Riccardo A. A. Muzzarelli et al., (1982), pp. 145-157.

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