Polycarbonate copolymer, method for producing the same, molded body, optical material, and electrophotographic photosensitive body
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United States of America Patent
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Feb 22, 2011
Grant Date -
Dec 31, 2009
app pub date -
Oct 18, 2007
filing date -
Oct 18, 2006
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Abstract
A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by the following formula (3) is 90 mass ppm or less.each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.—, —CO— and 9,9-fluorenylidene group.each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.
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