Process for extruding an article from an amide-imide copolymer a

Details Process for extruding an article from an amide-imide copolymer a Process for extruding an article from an amide-imide copolymer a

1984-03-30

1986-04-08

Anderson, Philip

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138177, 264176R, 264211, 425204, 425461, 428332, 4284735, 525180, 528350, B29C 4740, B29C 4712, C08G 6926

Patent

active

045812640

ABSTRACT:
A process for the manufacture of extruded articles by extruding polyamide-imide polymers and copolymers through melt flow channels and extrusion dies at ever increasing shear rates ranging from 0.1 sec.sup.-1 to about 2000 sec.sup.-1. The extruder barrel and melt flow channel temperatures range from about 480.degree. to about 600.degree. F. and the extrusion die temperatures range from about 575.degree. to about 680.degree. F. Also, the addition of polyetherimides and polysulfones is disclosed. Thin films, thin sheets and hollow tubes are disclosed. All these articles are useful in engineering applications requiring high temperature resistant plastics. Useful applications include use in the aerospace and automobile industry.

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