Terephthlates

INVENTA-FISCHER Polybutylene terephthlate (PBT) Terephthalic acid, 1,4-butanediol 2-reactor continuous process to produce PBT chips ready for conversion ot filaments, films and engineered plastics 3 2000... 

INVENTA-FISCHER Polyethylene terephthlate (PET) Terephthalic acid, ethylene glycol 4-reactors continuous process produces amorphous PET chips or fibers and filaments capacities up to 600 tpd available 300 2000... 

GTC Technology Corporation Dimethyl terephthlate, DMT p-Xylene Unique oxidation/esterification process uses and modern distillation/ crystallization 7 1997... 

C9H8BrCI02 ethyl 5-bromo-2-chlorobenzoate 76008-73-6 561.15 49.789 1.2 16241 C9H804 mono-methyl terephthlate 1679-64-7 546.15 48.336 2... 

Fig. 18.8. The zinc terephthlate hybrid polymer MOF-5. Zn04 tetrahedra are shown in gray and carbon and hydrogen atoms are drawn as gray spheres. Solvent molecules are omitted for...

A commonly used linear polyester is polyfethylene terephthlate) (PET), which is synthesized by condensation of terephthalic acid and ethylene glycol, and produced under the trade name Dacron,... 

Dimethyl terephthlate - GTC Technology Dimethylformamide - Davy Process Technology, UK Diphenyl carbonate - Lummus Technology Ethanolamines - Davy Process Technology, UK... 

BTX recovery from FCC gasoline Carboxylic acid Dimethyl terephthlate Isomerization... 

It is quite amazing that so few different plastics are used in packaging. The most common ones are polyethylene (low and high density), polypropylene, polystyrene, and poly(ethylene terephthlate). All of these materials can easily be recycled because they are thermoplastics. Incidentally, vinyls (polyvinyl chloride) are becoming less common in packaging. 

Kim J K and Robertson R E (1992) Possible phase transformation toughening of thermoset polymers by poly(butylene terephthlate), J Mater Sci 27 3000-3009. 

Epcos offers epoxy resin sealed metallised polyester (polyethylene terephthlate) film types with the addition of a UL 94 VO plastic case. MetalUsed polypropylene types offered by Epcos are claimed to have very good self-healing properties and a very high pulse strength. 

For example the DuPont ThermX polyester tolerates high temperatures and is based on poly(cyclohexylene-dimethylene terephthlate) chemistry. It has the chemical resistance, dimensional stability and processability of such polyesters as PET and PBT but with a melting point of 285 °C compared with PET (255 °C) and PBT (225 °C). DuPont claims that ThermX complements its other very high thermally capable Zenite TCP and Zytel HTN (high temperature Nylon) resins in applications which call for higher thermal capabilities than those of PBT, PET and PA66. ThermX,... 

Figure 12-7. Goodyear had this two-piece suit and matching tie made from recycled two-liter polyethylene terephthlate (PET) beverage bottles in 1978 and in 1990 donated it to the new Ripley s Believe It or Not Museum in Wisconsin Dells, Wise. The recycling process that Goodyear developed shreds bottles into small flakes that can then be processed into a reuseable TP polyester resin. Goodyear had the suit made to demonstrate the versatility of its recycled PET.

Poly(ethylene terephthlate) can also be processed to form a film known as Mylar. Mylar is tear resistant and, when processed, has a tensile strength nearly as great as that of steel. It is used in the manufacture of magnetic recording tape and sails. Aluminized Mylar was used to make the Echo satellite that was put into orbit around Earth as a giant reflector of microwave signals. 

Fig. 6. Short-time breakdown strength of poly(ethylene terephthlate). A, Single film and B, multiple 25- im films.

The best approach to determining the answer to the problem is to examine reference spectra of para-substituted aromatic-ester-type polymers such as alkyds or polyesters. When this is done, the answer is found to be polyethylene terephthlate. 

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