Process for producing amorphous thermoplastic resin composition

Details Process for producing amorphous thermoplastic resin composition Process for producing amorphous thermoplastic resin composition

1995-12-01

1997-09-30

Weber, Thomas R.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528497, 528498, 528502C, 528502F, C08F 610

Patent

active

056726791

ABSTRACT:
In a process for producing an amorphous thermoplastic resin composition comprising melt-kneading at least one amorphous thermoplastic resin, an improvement comprising melt-kneading the amorphous thermoplastic resin in the presence of not less than 1% by weight, based on the amorphous thermoplastic resin, of an organic solvent in a kneader having a vent hole(s) while maintaining at least one vent hole of the kneader under reduced pressure by means of an evacuator to remove the organic solvent so as to reduce the organic solvent content in the final composition to less than 1% by weight. Thermal deterioration of the resin during melt-kneading can be inhibited to provide a resin composition having well-balanced impact resistance and heat resistance and excellent hue.

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