Dispersing auxiliary for preparing cellulose ethers

Details Dispersing auxiliary for preparing cellulose ethers Dispersing auxiliary for preparing cellulose ethers

1982-11-19

1984-07-17

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 44, 536 43, 536 91, 536 96, 536 98, C08B 1100, C08B 1108, C08B 11145, C08B 11193

Patent

active

044607660

ABSTRACT:
In modern processes for preparing cellulose ethers containing one or more types of substituents, such as MC, CMC, HEC, HPC, MHEC or EHEC, cellulose is reacted with an etherifying agent in the presence of water, base and at least one inert organic solvent (as a dispersing auxiliary). Dimethoxyethane (ethylene glycol dimethyl ether) is employed as a new organic solvent for these syntheses, particularly in quantities of 1 to 30 parts by weight per part by weight of cellulose.

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