Process for the fabrication of rodlike polymer reinforced molecular composites into shaped articles
US5021517A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Apr 28, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L81/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for fabricating rod-like aromatic heterocyclic polymer-reinforced composite materials into shaped articles which comprises the steps of: PA1 (a) dissolving a rigid-rod aromatic heterocyclic polymer and a flexible, coil-like thermoplastic polymer in a common solvent at a concentration less than the critical concentration point of the solution; PA1 (b) extruding the solution resulting from step (a) into a liquid bath for removing the solvent; PA1 (c) placing the extrudate from step (b), in the liquid-wet state, into a mold, and consolidating the extrudate in the mold to provide a molded article; PA1 (d) drying the molded article resulting from step (c); and PA1 (e) compression molding the article to provide a fully consolidated, solid article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.