Cellulose aminomethanate by ion-exchange extraction

Details Cellulose aminomethanate by ion-exchange extraction Cellulose aminomethanate by ion-exchange extraction

1989-06-12

1991-03-12

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

536 32, 426105, C08B 300, A22C 1300

Patent

active

049994255

ABSTRACT:
This invention relates to an improvement to a process for synthesizing cellulose aminomethanate which comprises slurrying cellulose in an aqueous caustic solution, in the presence of urea; steeping the slurried mixture for a time sufficient to permit swelling of the cellulose for uniform distribution of the urea; concentrating the steeped mixture and treating an extraction of the concentrate with an ion-exchanger. When cellulose aminomethanate is manufactured from product prepared in accord with this process, it has a uniform distribution of substituent throughout the cellulose at the molecular level and comprises a suitable product for manufacturing sausage casing.

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