Phenylethynyl-terminated poly(arylene ethers)
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United States of America Patent
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Dec 7, 1993
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N/A
app pub date -
Apr 2, 1993
filing date -
Apr 2, 1993
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Expired
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Abstract
Phenylethynyl-terminated poly(arylene ethers) are prepared in a wide range of molecular weights by adjusting monomer ratio and adding an appropriate amount of 4-fluoro-4'-phenylethynylbenzophenone during polymer synthesis. The resulting phenylethynyl-terminated poly(arylene ethers) react and crosslink upon curing for one hour at 350.degree. C. to provide materials with improved solvent resistance, higher modulus and better high temperature properties than the linear, uncrosslinked polymers.
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