Spherical fused silica and its use in fillers and resin compositions
US4923520A · kind A · utility
43Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/61
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Spherical fused silica with an average particle diameter within the range of 10 to 50 .mu.m and having a particle size distribution of 1 to 100 .mu.m in diameter is a useful filler for resin compositions having improved mechanical and electrical properties as well as good flowability and low viscosity. The spherical fused silica is preferably treated on its surface with a silane coupling agent. Resin compositions containing said spherical fused silica as the major filler are particularly useful as casting materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.