Method for the preparation, of copolymeric polycarbonates
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United States of America Patent
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Mar 28, 1995
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N/A
app pub date -
Dec 21, 1993
filing date -
Oct 29, 1991
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Abstract
A copolymeric polycarbonate containing repeating constituent units having formula [I] below and repeating constituent units having formula [II] below in a molar ratio of from 98:2 to 40:60. ##STR1## The above-described copolymeric polycarbonates have excellent resistance to chemicals, heat resistance and flame retardancy without compromising the impact resistance and good hues intrinsic to polycarbonates.
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