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US 5,292,861 AGranted
Trifunctional cyanate esters, polymers thereof; use and preparation thereof
AssigneeInternational Business Machines Corporation
InventorKonstantinos I. Papathomas
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Abstract
Trisphenol PA tricyanate, prepolymers and crosslinked polymers thereof are provided. Blends of trifunctional cyanates and fluorinated or non-fluorinated difunctional cyanate are provided. The crosslinked polymers exhibit low dielectric loss properties and high glass transition temperatures and are suitable as the matrix material for structural composites including printed circuit boards.
Claims10
Trisphenol PA tricyanate.
A prepolymer of trisphenol PA tricyanate wherein about 5 to about 50 percent of the --OCN functional groups are trimerized.
Dependencies are inferred from the claim text.