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US 4,745,215 AGranted
Fluorine containing dicyanate resins
AssigneeInternational Business Machines Corporation
InventorsRobert J. Cox, William J. Summa, David W. Wang
Life of this patent
Estimating the term…
Abstract
4,4'-(Hexafluoroisopropylidene) bisphonol dicyanate and related compounds have reduced dielectric constant, reduced moisture absorption, and increase Tg making such compounds especially suitable for various electronic applications, such as circuit packaging or in forming prepregs and circuit boards.
Claims5
A compound of the formula ##STR5## wherein each R group is independently selected from hydrogen, alkyl with 1 to about 8 carbon atoms, alkenyl with 2 to about 8 carbon atoms, aryl or alkaryl with 6 to about 12 carbon atoms, and halogen, and n is an integer from 0 to about 4.
Dependencies are inferred from the claim text.