Glass fibers having low dielectric constant
US4824806A · kind A · utility
38Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C13/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Glass fibers having a low dielectric constant composed of a glass having a dielectric constant of not more than 5 and comprising: PA1 SiO.sub.2 45-65% by weight, PA1 Al.sub.2 O.sub.3 9-20% by weight, PA1 B.sub.2 O.sub.3 13-30% by weight, PA1 CaO+MgO+ZnO 4-10% by weight, PA1 Li.sub.2 O+Na.sub.2 O+K.sub.2 O 0-5% by weight, Based on the total weight of the glass, the total proportion of SiO.sub.2, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, CaO, MgO, ZnO, Li.sub.2 O, Na.sub.2 O, and K.sub.2 O being at least 95% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.