Homogeneous thermosetting copolymers
AssigneeAllied-Signal Inc.
InventorsJoseph J. Zupancic, Andrew M. Zweig, James A. Wrezel
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Abstract
Homogeneous thermosetting copolymers comprising a mixture of styrene-terminated tetrakisphenols and compounds containing at least one pendant vinyl group as exemplified by styrene-terminated tetrakisphenol ethane and styrene-terminated bisphenol A will possess desirable characteristics such as low dielectric constants and high glass transition temperatures. These polymers may be utilized as a component in laminates or circuit boards which are employed in relatively complicated pieces of electronic equipment.
Claims20
A homogeneous thermosetting copolymer comprising (a) a poly(vinyl benzyl ether) of a polyphenol having the generic formula:
- ##STR3## in which R is selected from the group consisting of alkyl, cycloalkyl, alkaryl and alkaryl radicals and X is independently selected from the group consisting of hydrogen and halogen atoms and (b) a compound containing at least one pendant vinyl group selected from the group consisting of styrene, o-divinylbenzene, m-divinylbenzene, p-divinylbenzene, substituted styrenes, substituted o, m, p divinylbenzenes, dismaleimides, bismaleimide-arylamine reaction products, styrene-terminated bisphenols, methyl acrylate, ethyl acrylate, propyl acrylate, methyl methacrylate, ethyl methacrylate, and propyl methacrylate.
Dependencies are inferred from the claim text.