Fluorine-containing polybenzoxazole
US6384182B2 · kind B2 · utility
1Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2001 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Jul 16, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a fluorine-containing polybenzoxazole including a structural unit represented by the general formula (1): where X is a tetravalent organic group containing an aromatic ring, and two sets of N and O are each bonded to the ortho positions of the aromatic ring of X such that two five-membered rings are formed next to the aromatic ring of X. This polybenzoxazole demonstrates low dielectric constant and low coefficient of thermal expansion while maintaining the properties of polybenzoxazole including mechanical strength and thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.