Ethylene glycol terephthalate for use in Molded articles such as bottles, containers, and other manufacturing capacity improved,Process for producing polyethylene terephthalate glycol, and Molded article

摘要

Polyethylene glycol terephthalate has a lower degree of Crystallization that 52%, the intrinsic viscosity between 0.65 and 0.95 DL / g, comprising 91 to 98,5% of units of ethylene terephthalate and 1.5 to 9 mol% of a comonomer units of at least one polibu00e1sico acid and / or unalcohol polihidroxu00edlico, Crystallization retardants,The total content of metals from one or more catalysts for polycondensation variableentre 150 and 400 ppm,With less than 5% mol per mol of repeating units of di - and / or triethylene glycol present in the polymer Chain.The invenciu00f3ntambiu00e9n includes a procedure for the preparation of the terephthalate Esterification or transesterification comprising terephthalic acid ester derivative with etilenglic OsuOl to an intrinsic viscosity of 0.55 to 0,70 g / dl in the presence of at least one lacristalizaciu00f3n retardant monomer and a Post Stage Solid condensation to intrinsic viscosity between 0.65 and 0.95 g / dl.Also described is an artu00edculomoldeado with ethylene glycol terephthalate.