Polycarbonate, copolycarbonate resin compositions and preparing

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

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Details

528193, 528198, 528200, 528501, C08G 6364

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active

058591729

ABSTRACT:
A copolycarbonate and a copolycarbonate composition having oustanding hardness and a method for their manufacture. in the amount of 50-99 mole %: ##STR1## X is ##STR2## R1 and R2 are hydrogen atoms or monovalent hydrocarbon groups, and R3 is a bivalent hydrocarbon group.) The Rockwell hardness (M scale) of this polycarbonate should preferably be 45-90.

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