Shaped articles of synthetic polymers
US4144284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1976 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Mar 3, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7496
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A shaped article is disclosed consisting essentially of a matrix of thermoplastic polymer in which there is dispersed, in the form of particles of mean diameter less than 200.mu., a polyimide resin comprising the reaction product of (a) a bis-imide of the formula: ##STR1## and (b) a diamine of the formula: EQU NH.sub.2 -- B -- NH.sub.2 (II) in which formulae the symbol Y represents H, CH.sub.3 or Cl, and the symbols A and B, which may be identical or different, represent a phenylene or cyclohexylene radical or a radical ##STR2## wherein T represents --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --O--, --SO.sub.2 -- or --S--, the bis-imide/diamine molar ratio being greater than 1, and the amount of polyimide resin constituting from 25 to 80% of the weight of the mixture of matrix + polyimide resin. The thermoplastic polymer may be e.g., polyethylene, polypropylene, ethylenepropylene copolymers or ethylene-tetrafluoroethylene copolymers. The shaped articles may be manufactured by injection-molding a mixture comprising the thermoplastic polymer and the polyimide resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.