Ethylene glycol terephthalate

Hoftyzer, P. J., Kinetics of the polycondensation of ethylene glycol terephthalate, Appl. Polym. Symp., 26, 349-363 (1975). [Pg.107]

Yokoyama, H Sano, T Chijiiwa, T. and Kajiya, R., Degradation reactions in ethylene glycol terephthalate polycondensation process,. /. Jpn. Petrol. Inst., 21, 194-198 (1978). [Pg.110]

By using diols and diacids we can form polymers with two different structural units which together become the repeating unit. An example of an ARjA plus BRjB reaction is diait used to make Coca-cola bottles, i.e. terephthalic acid plus ethylene glycol to form poly (ethylene glycol terephthalate). [Pg.473]

HOCH2CH2OH f HOOC C COOH Ethylene glycol Terephthalic acid... [Pg.1029]

Essential for solderability is the absence of THEIC from the molecule of po-ly(ester-imide). To get acceptable thermal properties, branching of the polymer is necessary. There are known solderable poly(ester-imide)s containing glycerine, ethylene glycol, terephthalate and DID acid [185-187]. Another resin contains only glycerine, ethylene glycol and DID acid [188]. Glycerine can be re-... [Pg.66]

Transesterification can be measured by NMR. There, the signal intensities of the ethylene protons associated with 2,6-naphthalene dicarb-oxylate/ethylene glycol terephthalate sequences, compared to the signals... [Pg.362]

Iporka see Poly(Ethylene Glycol - Terephthalic Acid) ... [Pg.67]

An alternative approach is to incorporate a benzophenone-type stabiliser into the polymer backbone, usually at low levels (0.1-5 wt%). Hoechst AG [32] claimed to achieve this by creating a stabilising moiety in the backbone by reacting ethylene glycol, terephthalic acid and 4-hydroxy-6-t-butylisophthalic acid, but other workers preferred to use a benzophenone stabiliser with a substituent containing two hydroxyl groups, e.g., 2-hydroxy-4(2,3-dihydroxypropoxy)benzophenone, to react with other ingredients in the reaction kettle [39, 40, 43], or 2-hydroxy-4(2,3-epoxypropoxy) benzophenone [31]. [Pg.204]

PCTG Poly (cyclohexane dimethanol-co-ethylene glycol terephthalate)... [Pg.1875]

Ester Single Tg I was Trogamid T II was made from 1,4-cyclohexanedimethanol/ ethylene glycol/terephthalic acid (PETG 6763) Nadkami et al. (1988)... [Pg.1942]

Polyethylene PET is a thennoplastic polyester made by condensing ethylene glycol terephthalate (PET) and terephthalic acid. PET is stable in a wide range of chemicals and possesses good mechanical, electrical, and thermal properties. It has one of tlie highest densities of the six primary thermoplastics. [Pg.100]

Note. In films used for food packaging (e.g., ready-to-eat salads, fresh meat and fish), poly (ethylene glycol terephthalate) does not fulfill all requirements with respect to mechanical properties, impermeability to air or water vapour, sealability, and the possibility of printing. In this case, several layers of different polymers are put together, each with its own specific contribution. Seven layers are not uncommon. Such composite films are made by coextrusion. Each polymer is melted in a special extruder and the melts are superposed before passing into the die. [Pg.256]

These polymers are permeable to carbon dioxide, so they cannot be used to stock fizzy drinks. Even poly(ethylene glycol terephthalate), which is impermeable to air, is not suitable when processed in this way. [Pg.257]

Ethylene Glycol/ Terephthalic acid 5. Polyethylene Terephthalate... [Pg.61]

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