Aromatic polyester carbonates, a process for their...

Details Aromatic polyester carbonates, a process for their... Aromatic polyester carbonates, a process for their...

C - Chemistry, Metallurgy

08

G

402/176

C08G 63/64 (2006.01)

Patent

CA 1173998

ABSTRACT Aromatic polyestercarbonates with an increased melt flowability are prepared based on a diphenol, terephthalic and/or isophthalic acid, phosgene and a particular chain terminator of the formula (I) Image (I) in which X represents OH, OCOC1 or COC1, and R represents a branched alkyl radical having 8 or 9 carbon atoms, provided that, in the alkyl radical R, the proportion of methyl-hydrogen atoms, based on all hydrogen atoms of alkyl radical, is from 47 to 89%, that R is in the o- and/or p-position, and that the upper limit of the proportion of o-isomer is 20%.

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