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US 4,709,008 AGranted
Blend of tris (cyanatophenyl) alkane and bis(cyanatophenyl) alkane
AssigneeInterez, Inc.
InventorDavid A. Shimp
Life of this patent
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Abstract
Blends of tricyanate esters and dicyanate esters when cured exhibit excellent heat and moisture resistant properties. The cured compositions are useful in structural composites, filmed structural adhesive and printed wiring boards.
Claims14
A curable composition consisting essentially of a blend of a tricyanate ester and a dicyanate ester in the amounts of about 90 to about 10 parts by weight of the tricyanate ester and about 10 to about 90 parts of the dicyanate ester, the total being 100 parts wherein the tricyanate ester has the structural formula:
- ##STR4## and the dicyanate ester has the structural formula:
- ##STR5## wherein each R is H or methyl and is the same or different and wherein X is methylene, alkylidene having 2 to 4 carbon atoms, oxygen (--O--), or divalent sulfur (--S--).
Dependencies are inferred from the claim text.