Forming solutions

Concentrating evaporators – Processes – Film

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159 61, 159 131, 159DIG10, 159DIG16, 203 14, 203 89, 536 553, 536127, B01D 122

Patent

active

055341136

ABSTRACT:
A solution of cellulose is formed by moving a premix of a tertiary amine N-oxide, water and cellulose through a thin-film evaporator using a bladed rotor under treatment conditions which specify, inter alia, an area of heated surface (1 m.sup.2 to 125 m.sup.2), a blade speed (2.5 to 8 m/sec), a pressure (25 to 100 mb) and a temperature (90.degree. to 135.degree. C.).

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