Kodar PETG

The copolyester was first marketed as Tenite Polyterephthalate 7DRO but is now sold as Kodar PETG. 

A similar product is Kodar PETG 6703 in which one acid (terephthalic acid) is reacted with a mixture of glycols (ethylene glycol and 1,4-cyclohexylene glycol). A related glass-reinforced grade (Ektar PCTG) has also been offered. 

Table 25.9 Typical properties of the copolyester Kodar PETG...

KODAR PETG Copolyester, Eastman Chemical. Technical data sheets. 

Eastman Kodak also introduced in 1972 a copolyester based on 1,4-cyclohexylene glycol and a mixture of terephthahc and isophthahc acids. The product is sold as Kodar PETG. Being irregular in structure, the polymer is amorphous and gives products of brilliant clarity. 

Kodar PETG Eastman Chem. Intern. Copolyester based on 1,4-cyclohexylene glycol and a mixture of terephthalic and isophthalic acids... 

Kodar PETG PETG, a thermoplastic copolyester of 1,4 cyclohexylene glycol and mixture of iso- and terephthalic acids Eastman Chem. 

PECT copolyesters have an excellent combination of properties as clarity, stiffness and toughness, and they do not require the use of plasticizers. The typical molding injection processing conditions for Kodar PETG 6763 are shown in Table 6.4. It has been observed that at high shear rates the viscosity decreases rapidly with increasing temperature. For injection molding this... 

The results of these tests showed that KODAR PETG Copolyester 6763 is resistant to a variety of chemicals, high-molecular-weight esters, aliphatic hydrocarbons, and dilute solutions of acids and salts. PETG 6763 was significantly affected by concentrated acetic acid, acetone, benzene, toluene, carbon tetrachloride, dimethyl formamide, and phenol and was completely deteriorated by concentrated nitric and sulfuric acids and by ethylene dichloride. 

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