Asbestos free gasket forming compositions

Details Asbestos free gasket forming compositions Asbestos free gasket forming compositions

1980-05-07

1982-05-18

Hoke, V. P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

188251A, 188251M, 524256, 524425, 524426, 524435, 524434, 524437, 524448, 524449, 524445, 524451, C08K 708, C08K 710, C08K 704, C08K 702

Patent

active

043304427

ABSTRACT:
An asbestos-free gasket forming composition is disclosed. The composition is preferably produced by removing water from an aqueous furnish composition comprising phenolic fibers, aromatic polyamide fibers, an inorganic or cork filler, a synthetic rubber binder, and a water insoluble hydroxide produced from a soluble salt selected from the group consisting of aluminum salts, ferric salts and stannic salts, by reaction with a sufficient amount of an alkaline hydroxide to provide a furnish pH within the range of from about 6 to about 10, and preferably of from about 7 to 8.

REFERENCES:
patent: 2473319 (1949-06-01), Winkelmann
patent: 3344099 (1967-09-01), Cahell et al.
patent: 3556922 (1968-08-01), Green et al.
patent: 3714111 (1973-01-01), Economy et al.
patent: 3915906 (1975-10-01), Romey
patent: 4075158 (1978-02-01), Coale
patent: 4119591 (1978-10-01), Aldrich
patent: 4219452 (1980-08-01), Littlefield
patent: 4242241 (1980-12-01), Rosen et al.
patent: 4244994 (1981-01-01), Trainor et al.

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