C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
402/178, 260/617
C07C 39/17 (2006.01) B01D 71/50 (2006.01) C07C 39/42 (2006.01) C08G 64/00 (2006.01) C08G 64/06 (2006.01)
Patent
CA 1339585
Dihydroxydiphenyl cycloalkanes corresponding to the formula (see fig. I) in which R1 and R2 independently of one another represent hydrogen, halogen, C1-C8 alkyl, C5-C6 cycloalkyl, C6-C10 aryl and C7-C12 aralkyl, m is an integer of from 4 to 7, R3 and R4, individually selectable for each X, independently of one another represent hydrogen or C1-C6 alkyl and X represents carbon with the proviso that, at at least one atom X, both R3 and R4 are alkyl, a process for their production, their use for the production of high molecular weight polycarbonates, the polycarbonates made from dihydroxydiphenyl cycloalkane of formula (I) and films made from these polycarbonates.
607054
Casser Carl
Freitag Dieter
Fritsch Karl-Herbert
Schrader Lutz
Waldenrath Werner
Aktiengesellschaft Bayer
Casser Carl
Freitag Dieter
Fritsch Karl-Herbert
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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