Solvents for and purification of chitin

Plastic and nonmetallic article shaping or treating: processes – Disparate treatment of article subsequent to working,... – Washing of article

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106203, 260 328N, 264186, 264207, 264217, 264299, C07H 506

Patent

active

040629210

ABSTRACT:
New solvents for chitin comprising dimethylacetamide, N-methylpyrrolidone or mixtures of these in combination with a minor proportion of lithium chloride, and their use in the purification of chitin for regeneration in the form of films and fibers are described.

REFERENCES:
patent: 2040880 (1936-05-01), Rigby
patent: 2689244 (1954-09-01), Jones
patent: 3068188 (1962-12-01), Beste et al.
patent: 3703570 (1972-11-01), Busch et al.
patent: 3879377 (1975-04-01), Austin
patent: 3892731 (1975-07-01), Austin
patent: 3989535 (1976-11-01), Capozza
Solubility & Reactivity of Marine Polymers in Dimethylformamide-N.sub.2 O.sub.4, Allan et al., 1/1971, Chemistry and Industry, p. 127.
Polyamides-Solubility-Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 16, pp. 6, 7.

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