EnglishPoly(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 / Dj, Brunelle; C., Berti; Am, Celli; M., Colonna; M., Fiorini; E., Marianucci; Messori, Massimo; Pilati, Francesco; L., Sisti; P., Marchese. - .
| Data di concessione: | 2003 | |
| Titolo: | Method for preparing poly(cyclohexane-1,4-dicarboxylate)s from cyclohexane-1,4-dicarboxylic acid, and composition | |
| Autore/i: | Dj, Brunelle; C., Berti; Am, Celli; M., Colonna; M., Fiorini; E., Marianucci; Messori, Massimo; Pilati, Francesco; L., Sisti; P., Marchese | |
| Autore/i UNIMORE: | ||
| 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. | |
| Handle: | http://hdl.handle.net/11380/308246 | |
| Enti collegati: | General Electric Company, USA | |
| Rilevanza: | Internazionale | |
| Numero di deposito: | US 2003232958 | |
| Tipologia | Brevetto |
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