Processes for the preparation of branched, water soluble cellulo

Details Processes for the preparation of branched, water soluble cellulo Processes for the preparation of branched, water soluble cellulo

1984-10-05

1985-07-23

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 14, 536 15, 536 43, 536 552, 536 44, C08B 11193

Patent

active

045310009

ABSTRACT:
A process for preparing n-amino-n-deoxy cellulose where n is 2 or 3 and has the same value at each occurrence in one molecule. When n is 2 cellulose is selectively oxidized by (a) reacting it with triphenylmethyl chloride; then (b) reacting the product from (a) with acetic anhydride and dimethylsulfoxide. The product from (b) is then subjected to reductive amination. When n is 3 cellulose is reacted with dimethylsulfoxide and paraformaldehyde. The product from (a) is then reacted with acetic anhydride and dimethylsulfoxide and the product from (b) then subjected to reductive amination.

REFERENCES:
patent: 2463885 (1949-03-01), Kuehl et al.
patent: 3029232 (1962-04-01), Bikales et al.
patent: 3567360 (1971-03-01), Pierce et al.
patent: 3726859 (1973-04-01), Engelskirchen et al.
patent: 3743634 (1973-07-01), Woo
patent: 3956275 (1976-05-01), Demain et al.

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