Production method of polycarbonate resin pellets

Details Production method of polycarbonate resin pellets Production method of polycarbonate resin pellets

1996-06-11

1998-02-10

Mosley, Terressa

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528198, 528199, C08G 6400

Patent

active

057170550

ABSTRACT:
A method of producing polycarbonate resin pellets containing very less residual organic solvent and low molecular weight volatile matters and having a high transparency by melt-kneading a polycarbonate resin powder in an extruder equipped with a screw having a material seal mechanism, and vents, and devolatilizing the residual organic solvent and/or the low molecular weight volatile matters at the vent portion and then extruding the molten resin.
The polycarbonate resin pellets are suitable for optical grade articles and automobile lenses.

REFERENCES:
patent: 5405934 (1995-04-01), Oshino et al.
patent: 5510450 (1996-04-01), Sakashita et al.

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