Poly(1,4-cyclohexanedicarboxylate)s, esp. poly(1,4-cyclohexanedimethylene-1,4-cyclohexanedicarboxylate), are prepd. from at least one relatively non-volatile diol, such as 1,4-cyclohexanedimethanol, and cyclohexane-1,4-dicarboxylic acid by an esterification process in the presence of a catalyst, at a max. temp. of about 260°. In one embodiment the procedure employs a two-step process, the second of which may be performed in the melt or in the solid state. A volatile diol such as ethylene glycol may also be present. Thus, 1,4-cyclohexanedicarboxylic acid-1,4-cyclohexanedimethanol copolymer with Mw 3,500 and mn 1,400 was prepd. in the presence of tetrakis(2-ethylhexyl) titanate.

Method for preparing poly(cyclohexane-1,4-dicarboxylate)s from cyclohexane-1,4-dicarboxylic acid, and composition.

BERTI, CORRADO;CELLI, ANNAMARIA;COLONNA, MARTINO;FIORINI, MAURIZIO;MARIANUCCI, ELISABETTA;SISTI, LAURA;MARCHESE, PAOLA
2004

Abstract

Poly(1,4-cyclohexanedicarboxylate)s, esp. poly(1,4-cyclohexanedimethylene-1,4-cyclohexanedicarboxylate), are prepd. from at least one relatively non-volatile diol, such as 1,4-cyclohexanedimethanol, and cyclohexane-1,4-dicarboxylic acid by an esterification process in the presence of a catalyst, at a max. temp. of about 260°. In one embodiment the procedure employs a two-step process, the second of which may be performed in the melt or in the solid state. A volatile diol such as ethylene glycol may also be present. Thus, 1,4-cyclohexanedicarboxylic acid-1,4-cyclohexanedimethanol copolymer with Mw 3,500 and mn 1,400 was prepd. in the presence of tetrakis(2-ethylhexyl) titanate.
2004
US 6,828,410
D. J. Brunelle; C. Berti; A. Celli; M. Colonna; M. Fiorini; E. Marianucci; M. Messori; F. Pilati; L. Sisti; P. Marchese
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/8682
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