Substantially pure bisphenols and polymers comprising bisphenols
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United States of America Patent
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Jan 2, 1996
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N/A
app pub date -
Apr 11, 1994
filing date -
May 17, 1993
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Abstract
Bisphenols are prepared from cyclic monoterpene precursors and high glass transition temperature polymers are prepared from bisphenols. More particularly, substantially pure 4-[1-[3-(4-hydroxyphenyl)-4 -methylcyclohexyl]-1-methylethyl] phenol and 4,4'-[1-methyl -4-methylethyl)-1,3-cyclohexandiyl] bisphenol are isolated and high glass transition temperature bisphenol polycarbonates are prepared.
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