Polyimide sheet and preparation process of the sheet
US5237044A · kind A · utility
3Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1989 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Oct 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyimide sheets having excellent thermal resistance and good surface appearance of the resultant sheets are obtained by a melt-extrusion process from a specific polyimide in the temperature range of 300.degree. C. to 450.degree. C. and a moisture content of 200 ppm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.