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. 14, 1993
Filed:
Feb. 05, 1992
Connie J Murphy, Midland, MI (US);
Wen-Fang Hwang, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
A process for consolidating/molding a material made of (a) block copolymers of rigid or semi-rigid PBZ with thermoplastic polymers, (b) block copolymers of rigid PBZ with semi-rigid PBZ, (c) molecular composites of rigid or semi-rigid PBZ with thermoplastic polymers, (d) molecular composites of rigid or semi-rigid PBZ with non-rigid PBZ polymers or (e) semi-rigid PBZ polymers, whereby the material, in its substantially acid-free, wet coagulated state, and in the form of a plurality of films or film layers, filaments or fibers, powders or granules, film layers, filaments or particulate, is subjected to a first pressure P1 which is sufficient to provide a substantially void-free consolidated material upon molding. Heat and a second pressure P2 is then applied to the wet coagulated material in amounts sufficient to fuse the films or film layers, filaments or fibers, powders, or granules into a single entity. Prior tot he application of the first pressure P1, surface water remaining on the material is removed, leaving the material with sufficient water to plasticize it.