Siloxane-containing polymers
US4652598A · kind A · utility
12Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1985 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Oct 24, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyamic acids prepared from the condensation of dianhydrides (or trianhydrides) and diamines and preferably dissolved in a suitable solvent produce polyimide shaped articles (e.g. films) relatively free of voids, pinholes, cracks and bubbles when about 0.75 to about 5 mole percent of a polysiloxane is incorporated in the backbone of the polyamic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.