Aromatic polyesters and copolyesters

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. 

Aliphatic polyesters and copolyesters Aromatic polyesters and copolyesters Poly(caprolactone) - PCL Poly(esteramide)s - PEA Poly(vinyl alcohol) - PVA 

A great many aromatic polyesters and copolyesters which show thermotropic behaviour have now been reported, particularly in the patent literature. The copolyesters may contain either combinations of different types of mesogenic units or combinations of mesogenic and non-mesogenic (non-linear) units. The structures of many of the different types of monomers used to form liquid crystal aromatic polyesters and copolyesters are shown in Table 3.  

Table 6.3 summarizes the mechanical properties of some aromatic polyesters and copolyesters derived from 1,4-CHDM. 

D. O. Hummel, U. Neuhoff, A. Bretz, and H.-J. Dussel, Linear-temperature programmed pyrolysis of thermoresistant polymers—mass and FTIR spectrometries, 2, Aromatic polyesters and copolyesters, MakromoZ. Chem., 194, 1545 (1993). 

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. 

Makromolekulare Chemie 194, No.6, June 1993, p.1545-59 LEVEAR-TEMPERATURE PROGRAMMED PYROLYSIS OF THERMORESISTANT POLYMERS - MASS AND FTIR SPECTROMETRIES. II. AROMATIC POLYESTERS AND COPOLYESTERS Hummel D 0 Neuhoff U Bretz A Duessel H J Koln,Universitat Angewandte Spektrometrie Koeln eV 

Various low molecular weight polyesters are polymeric plasticizers. These are likely to be compatible with polyester resins. Other groups of plasticizers are also used in plasticization of aliphatic and aromatic polyesters and copolyesters, as follows  

The mechanical properties of the UPR prepared using pentaerythritol diacetate were comparable with the properties of a commercial UP resin (Table 10). Novel unsaturatedpara-linked aromatic polyesters and copolyesters (Scheme 11) containing fumaroyl units were synthesized by the interfacial 

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