The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 1997
Filed:
Dec. 01, 1995
Mitsubishi Chemical Corporation, Tokyo, JP;
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.