Cycloaliphatic polyimide, a method for producing the same, and its use
US6498226B2 · kind B2 · utility
6Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2001 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | May 3, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133723
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides cycloaliphatic polyimide having the following formula (I): wherein 1 and n are integers from 4 to 7; m is an integer from 0 to 2; p is an integer from 1 to 8; polycyclic aliphatic compound R reprents C1-8 cycloalkyl, cycloalkenyl, cycloalkynyl, norbornenyl, decalinyl, adamantanyl, or cubanyl. That cycloaliphatic polyimide can be a through transparent film, their thermal stability is over 430° C. and dielectric constant is about 2.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.