Process for the production of polycarbonate agglomerate

Details Process for the production of polycarbonate agglomerate Process for the production of polycarbonate agglomerate

1997-03-03

1998-12-22

Mosley, Terressa

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528198, C08G 6400

Patent

active

058521577

ABSTRACT:
This invention relates to a process for the production of polycarbonate agglomerate of high bulk density from polycarbonate solutions, in which the organic solvent is stripped from a solution of polycarbonate by means of steam, and which is characterised in that the resulting suspension of polycarbonate particles, condensed water and water- and solvent vapor is fed in a tube or tubular heat exchanger to a separator which is partially filled with water and which is under elevated pressure. The polycarbonate agglomerates are discharged, together with part of the water, via a pressure lock at the bottom of the separator.

REFERENCES:
patent: 3508339 (1970-04-01), Neblett
patent: 4212967 (1980-07-01), Govoni et al.
patent: 4568418 (1986-02-01), Walko et al.
patent: 5317083 (1994-05-01), Freitag et al.
patent: 5475084 (1995-12-01), Okamoto et al.

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