Asbestos free gasket forming compositions
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United States of America Patent
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-
May 18, 1982
Grant Date -
N/A
app pub date -
May 7, 1980
filing date -
May 7, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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