Vermiculite moulding compositions and articles made therefrom

Details Vermiculite moulding compositions and articles made therefrom Vermiculite moulding compositions and articles made therefrom

1987-06-01

1988-08-09

Bell, Mark L.

Compositions

Exfoliated or intumesced

C04B 2006

Patent

active

047626410

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.

REFERENCES:
patent: 3916057 (1975-10-01), Hatch et al.
patent: 3953357 (1976-04-01), Preston et al.
patent: 4130687 (1978-12-01), Ballard et al.

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