Process for the recovery of polymers dissolved in aqueous alkali

Details Process for the recovery of polymers dissolved in aqueous alkali Process for the recovery of polymers dissolved in aqueous alkali

1993-01-27

1994-08-09

Michl, Paul R.

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

Synthetic resins

Treating polymer containing material or treating a solid...

521 405, 521 435, 523332, 528487, 528491, 528490, C08J 307, C08J 1116, C08J 1126

Patent

active

053367553

ABSTRACT:
The invention relates to a process for the recovery of polymers dissolved in an aqueous alkaline or acid medium by precipitating the polymers with acid or alkaline precipitants, the precipitation being initiated in a strong aqueous flow and the precipitated polymers separated from the aqueous medium.

REFERENCES:
patent: 3032545 (1962-05-01), Renberg
patent: 3960485 (1976-06-01), Fanti et al.
patent: 4612355 (1986-09-01), Belz
patent: 4870148 (1989-09-01), Belz et al.
patent: 4990146 (1991-02-01), Deibig et al.
patent: 5094912 (1992-03-01), Deibig et al.

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