Continuous process for concentrating polymer solutions up to...

Details Continuous process for concentrating polymer solutions up to... Continuous process for concentrating polymer solutions up to...

C - Chemistry, Metallurgy

08

J

400/7024

C08J 11/04 (2006.01) B01D 1/22 (2006.01) B01D 3/06 (2006.01) C08F 6/02 (2006.01) C08G 77/34 (2006.01)

Patent

CA 2039809

Continuous process for concentrating polymer solutions up to a required specification level of residual solvents Abstract In concentrating polymer solutions up to a desired specification level of residual solvents, encrustations can be prevented and the yield and the degree of purity can be increased, when the product is heated up under pressure, expanded through a restrictor element (3) with vapour formation into a first, preferably coiled flow pipe (7) and concentrated therein as far as possible, the mixture of vapours and polymer solution is whirled at an angle into a second flow pipe (9) in a sloping arrangement and fitted with self-cleaning elements (11, 12) and concentrated therein up to the desired level, and vapours and concentrate are separately discharged only downstream thereof. Figure 1 Le A 27 489 -Ausland

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