Tungsten disulfide modified bismaleimide
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United States of America Patent
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May 14, 1996
Grant Date -
N/A
app pub date -
Jan 23, 1995
filing date -
Jan 23, 1995
priority date (Note) -
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Abstract
A method of restoring a damaged surface of a metal substrate to a functional conditions through application of a filler material consisting essentially of bismaleimide and tungsten disulfide having a ratio of 10:1. The bismaleimide having been cured through the following sequence to maintain the durability thereof when exposed to aromatic fuels at temperatures up to 500.degree. F., the temperature of the bismaleimide is uniformly raised from room temperature to 350.degree. F. in one hour and maintained at 350.degree. F. for an additional hour and thereafter the temperature is immediately raised to 475.degree. F. and maintained at 475.degree. F. for an additional two hours.
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