Gasket materials comprising polyester and rice hulls

Details Gasket materials comprising polyester and rice hulls Gasket materials comprising polyester and rice hulls

1983-11-17

1985-01-29

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523509, 523511, 524 15, C08K 500, C08K 1100

Patent

active

044966741

ABSTRACT:
The present invention relates to gasketing materials comprising a rubber binder, a pulverized rice hull filler and a polyester which preferably is crystallizable. The rice hull material acts as a reinforcing filler and, in combination with the rubber and polyester, provides gasketing materials which demonstrate the ability to conform to flange irregularities. As a result, the gaskets demonstrate remarkable sealing capabilities. When they comprise nitrile rubbers, they are also resistant to fuel absorption.

REFERENCES:
patent: 3554941 (1971-01-01), Varnell
patent: 3932319 (1976-01-01), Clendinning et al.
patent: 3951907 (1976-04-01), Mehta
patent: 4141863 (1979-02-01), Coran et al.
patent: 4202803 (1980-05-01), Signoretto
patent: 4287324 (1981-09-01), Coran et al.
patent: 4290927 (1981-09-01), Tanaka et al.
patent: 4327199 (1982-04-01), Coran et al.
patent: 4379190 (1983-04-01), Schenck
patent: 4403007 (1983-09-01), Couglin
"Rice Hulls" Hsu et al., pp. 736-763.
J. Sci. Ind. Res. 9-1980, pp. 495-515 Govindarao.
Plastics Compounding Redbook 1982/3, vol. 5, pp. 62, 63, 81-84, 87.
Plastics Compounding, pp. 47-50 Mar./Apr. 1981 Willis et al.
Society Automobile Engineering Kessler 1977 Symposium.

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