Polymer granules containing little residual solvent

Details Polymer granules containing little residual solvent Polymer granules containing little residual solvent

1994-07-26

1996-04-02

Seidleck, James J.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528196, 528193, 528194, 528332, 428402, C08F 600

Patent

active

055041876

ABSTRACT:
Granules collected from a solution of a polycarbonate, an integrated structure of independent fine particles constituting the granules being formed at least on the surfaces of the granules; and a process for preparing the granules of the polycarbonate which comprises the steps of adding a poor solvent to the polycarbonate solution, and then agitation-granulating fine particles of the polycarbonate into the granules, while stirring involving a shear force-imparting function is carried out under heating. According to the present invention, the polycarbonate or the like can be collected from its organic solvent solution as the granules having good drying properties.

REFERENCES:
patent: 3685804 (1972-08-01), Stansfield
patent: 4634761 (1987-01-01), Mendiratta et al.
patent: 5196507 (1993-03-01), Totani et al.
patent: 5324816 (1994-06-01), Khanna et al.
Database WPI, Derwent Publications Ltd., AN 74-81418V; Chemical Abstracts, vol. 81, No. 20, Nov. 18, 1974, p. 50, of JP-A-49 028 642, Mar. 14, 1974.
Patent Abstracts of Japan, vol 16, No. 375 (C-0973), Aug. 12, 1992; Derwent Publications Ltd., AN 92-180932, of JP-A-41 020 133, Apr. 21, 1992.

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