Ionic pullulan gels and production thereof

Details Ionic pullulan gels and production thereof Ionic pullulan gels and production thereof

1978-03-27

1979-11-13

Brown, Johnnie R.

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

Organic compounds

Carbohydrates or derivatives

536 1, 536117, 536118, 536122, 536119, C07H 1504

Patent

active

041744403

ABSTRACT:
A process for producing ionic pullulan gels which comprises gelation of pullulan by crosslinking and introduction of ionic groups into the resulting pullulan gel, the former comprising reacting pullulan with a bi-functional compound in a solvent in the presence of an alkaline substance, and the latter comprising reacting the resulting pullulan gel with a compound having a carboxyl, sulfonic, phosphoric or amino group in a solvent in the presence of an alkaline substance.

REFERENCES:
patent: 3275576 (1966-09-01), Floden et al.
patent: 3277025 (1966-10-01), Floden et al.
patent: 3960685 (1976-06-01), Sano et al.
Chem. Abstract Cit, 171769j, vol. 81, 1974.
Peterson, E. et al., J. Am. Chem. Soc., 78, 751 (1956).
Guthrie, J., Industrial and Engineering Chemistry, 44, 2187 (1956) and 52, 935 (1960).

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