Polyimide resin composition
US4847311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention is a polyimide resin composition containing 100 parts by weight of polyimide having recurring units of the following general formula (I): ##STR1## where Y is a bond, divalent hydrocarbon radical having from 1 to 10 carbons, hexafluorinated isopropylidene radical, carbonyl radical, thio radical, sulfinyl radical, sulfonyl radical or oxide, and R is a tetra-valent radical of aliphatic radical having 2 or more carbons, cyclic aliphatic radical, monocyclic aromatic radical, fused polycyclic radical and polycyclic aromatic radical wherein the aromatic radicals are linked to one another directly or via bridged member, and from 5 to 100 parts by weight of fibrous reinforcing materials such as glass fibres, carbon fibres, potassium titanate fibres and aromatic polyamide fibres. The resin composition can provide molded products having excellent high-temperature stability, dimensional stability and mechanical strength, and is useful as the material for electric and electronic devices, precision instrument parts etc. Polyimide of this invention can be prepared from aromatic etherdiamined and taetracarboxylic acid dianhydrides. The aromatic etherdiamines are 4,4'-bis(3-aminophen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.