Vermiculite moulding compositions and articles made therefrom
US4762641A · kind A · utility
7Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Jun 1, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B30/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A moulding composition comprising particles of gas-exfoliated vermiculite (a category which includes thermally exfoliated vermiculite) contains as binder very fine particles (diameter below 50 .mu.m) of vermiculite from which interstitial magnesium ions have been at least partially removed and which has been swollen in water. The composition is particularly suitable for the manufacture of articles required to function in air at temperatures above 250.degree. C., such as gaskets for the exhaust systems of internal combustion engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.