Polyesters Based on Cyclohexanedimethanol

Departament d Enginyeria Qiimica. E. T. S. d Enginyeria Industrial de Barcelona. Universitat Politknica de Catalunya. 08028 Barcelona, Spain 

Aliphatic and aromatic polyesters and copolyesters containing cyclohexanedimethanol units are reviewed covering from the synthesis of monomers up to their polymerization by the different known synthetic routes. Thermal and mechanical properties as well as thermal and chemical stability are discussed with reference to the polyester structure. Compounding, processing, recycling and applications of these polyesters and copolyesters are also reviewed. Finally, an account on the recent developments in blends and composites is provided. 

Kei/u ofds Cyclohexanedimethanol, polyesters, copolyesters, polymerization, polycondensation, thermal and mechanical properties, crystallization, blends, thermal stability, chemical stability 

Since the discovery of 1,3- and 1,4-cyclohexanedimethanol, the interest in these monomers for the production of polyesters has gradually increased. Today they are frequently used for the synthesis of both aliphatic and aromatic polyesters and copolyesters, which distinguish by showing novel improved properties. 

3- and 1,4-cyclohexanedimethanol, abbreviated as 1,3-CHDM and 1,4-CHDM, are traditionally obtained at the industrial scale by 

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Poly(ethylene-co-1,4-cyclohexane dimethylene terephthalate) The thermal and photochemical oxidation processes of a polyester based on poly(ethylene-co-l,4-cyclohexanedimethylene terephthalate) (PECT) with approximately 30% of 1,4-cyclohexanedimethanol have been studied by means of chemiluminescence [88], Also, the stabilization activity of some commercial antioxidants has been evaluated, and it has been related to hydroperoxide levels in the polymer. 

S.R. Turner, R.W. Seymour, and J.R. Dombroski, "Amorphous and crystalline polyesters based on 1,4-cyclohexanedimethanol" in J. Scheirs and T. E. Long, eds.. Modern Polyesters, John Wiley Sons, pp. 267-292,2003. 

Polyester polyols, 25 464 468 Polyester resin(s), 11 302 coating resins, 7 104-106 cyclopentadiene and dicyclopentadiene applications, 8 230 flammability of, 20 115-116 properties in powder coating, 7 43t standard test methods for, 20 11 It unreinforced, 10 187t weathering of, 20 116 Polyester resin-based powder coatings, organic titanium compounds in, 25 125 Polyester resin composites, 26 762-763 Polyester resin formulations ingredients of, 20 96t unsaturated, 15 511-512 Polyesters, 10 185-189, 497 12 655-656. See also Thermoplastic polyesters Unsaturated polyesters acid resistance of, 20 7-8 antioxidant applications, 3 121 aromatic ionic, 23 722 based on 1,4-cyclohexanedimethanol, 12 674-675... 

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