Polyesters of 4,4'dihydroxybicyclohexyl
AssigneeMontedison S.p.A.
InventorsAlfredo Coassolo, Andrea Gardano, Marco Foa', L. Lawrence Chapoy
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Abstract
Thermotropic semiflexible polyesters are taught which are obtained by polycondensation of 4,4'-dihydroxybicyclohexyl with at least one .alpha.,.omega.- alkandioic acid of general formula: HOOC-(CH.sub.2).sub.n -COOH (I) wherein n is an integer comprised between 4 and 12.
Claims10
Polyesters obtained by polycondensation of 4,4'-dihydroxybicyclohexyl with at least an .alpha.,.omega.-alkandioic acid of the general formula:
- HOOC--(CH.sub.2).sub.n --COOH (I)
- wherein n is an integer from 4 to 12, or at least one alkyl derivative thereof having chiral carbon atom wherein the alkyl radical contains from 1 to 6 carbon atoms.
Semiflexible thermotropic polyesters obtained by polycondensation of 4,4'-dihydroxybicylohexyl, essentially in its trans-trans isomeric form, with at least an .alpha.,.omega.-alkandioc acid of general formula:
- HOOC--(CH.sub.2).sub.n --COOH (I)
- wherein n is an integer from 4 to 12, or at least one derivative thereof having a chiral carbon atom wherein the alkyl radical contains from 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.