MIXED THERMOSETTING RESIN COMPOSITIONS CONTAINING POLYPHENYLENE ETHERS
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Abstract
THIS SPECIFICATION DISCLOSES THERMOSETTING RESIN COMPOSITIONS OF IMPROVED QUALITIES MADE BY COMBINING A HIGH-TEMPERATURE THERMOPLASTIC RESIN, I.E., A POLYPHENYLENE ETHER POLYMER, WITH ORGANIC MATERIALS CONTAINING POLYMERIZABLE CARBON TO CARBON UNSATURATION, PARTICULARLY DIALLYLIC PHTHALATE MONOMERS AND PREPOLYMERS. THESE POLYPHENYLENE ETHER POLYMERS COMBINE WITH POLYMERIZABLE MATERIALS CONTAINING CARBON TO CARBON UNSATURATION IN THE PRESENCE OF A FREE RADICAL CATALYST. THESE COMPOSITIONS ARE FORMED BY MODERATE HEAT AND PRESSURE INTO ARTICLES WITH EXCELLENT ELECTRICAL AND MECHANICAL PROPERTIES WHICH ARE RETAINED AT ELEVATED TEMPERATURES, AND UNDER CONDITIONS OF HIGH HUMIDITY.
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