Continuous process for concentrating polymer solutions up to a r

Details Continuous process for concentrating polymer solutions up to a r Continuous process for concentrating polymer solutions up to a r

1991-03-22

1993-10-26

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

159 21, 159 22, 159 23, C06L 3100

Patent

active

052567079

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 vapor formation into a first, preferably coiled flow pipe (7) and concentrated therein as far as possible, the mixture of vapors 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 vapors and concentrate are separately discharged only downstream thereof.

REFERENCES:
patent: 3395746 (1968-08-01), Szabo et al.
patent: 3550669 (1970-12-01), Lippert
patent: 3834441 (1974-09-01), Vernaleken
patent: 4181788 (1980-01-01), Wingler
patent: 4686279 (1987-08-01), Nagtzaam et al.

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