Pourable granulated siliceous insulation
US3950259A · kind A · utility
11Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1973 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | May 29, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B30/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A thermal insulation composition is described which is dry, free-flowing, granular, and has a thermal conductivity approximately that of dry still air. The composition contains two granular siliceous materials and a granular opacifier. The first siliceous material is coarser and denser, and provides the principal bulk density of the final mixture. The second siliceous material is quite fine, and provides the principal free-flowing properties of the mixture. In a preferred embodiment a third siliceous material is also included to increase the overall surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.