Impregnated soft substance gasket

Details Impregnated soft substance gasket Impregnated soft substance gasket

1986-12-11

1988-05-03

Kittle, John E.

Stock material or miscellaneous articles

Composite

Of silicon containing

428290, 277235A, 277DIG6, B32B 904, B32B 2704, D04H 164

Patent

active

047419652

ABSTRACT:
A soft substance gasket material preferably made of a metal reinforced fiber mat is impregnated with a silicone impregnating agent comprising a mixture of a polysiloxane having reactive hydrogen groups such as a polyhydrogen siloxane, an addition cross-linking polysiloxane such as a methyl vinyl siloxane, and cross-linking catalysts, preferably in the form of only one organic metal compound. In spite of having small quantities of addition cross-linking polysiloxane and cross-linking catalysts, the impregnated seals are not tacky after cross-linking, they are easy and inexpensive to manufacture, and they evidence improved functional characteristics such as improved resistance to hot media, temperature and aging when compared with seals impregnated with only one type of polysiloxane.

REFERENCES:
patent: 3970322 (1976-07-01), Stecher et al.
patent: 4071644 (1978-01-01), Grenoble et al.
patent: 4082726 (1978-04-01), Mine et al.
patent: 4322518 (1982-03-01), Blizzard
patent: 4416917 (1988-11-01), France et al.
patent: 4483539 (1984-11-01), Bindel et al.

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