Abstract: A polyethylene terephthalate composition (PET), an injection-molded bottle preform made from a PET composition, a refillable PET container blow-molded from the preform, catalyst compositions used for making the PET composition, methods for making the PET composition, methods for injection-molding a PET bottle preform, methods for blow-molding a refillable PET bottle from a preform and methods for improving the rewash stability and recyclability of refillable PET bottles particularly for carbonated soft drinks.
Type:
Grant
Filed:
December 3, 2021
Date of Patent:
September 5, 2023
Assignee:
ALPEK POLYESTER, S.A. DE C.V.
Inventors:
David Eugene Thompson, Damian Adrian Salazar Hernandez
Abstract: A polyethylene terephthalate composition (PET), an injection-molded bottle preform made from a PET composition, a refillable PET container blow-molded from the preform, catalyst compositions used for making the PET composition, methods for making the PET composition, methods for injection-molding a PET bottle preform, methods for blow-molding a refillable PET bottle from a preform and methods for improving the rewash stability and recyclability of refillable PET bottles particularly for carbonated soft drinks are disclosed. The polyethylene terephthalate composition includes a polyester resin containing terephthalic acid, isophthalic acid, ethylene glycol and cyclohexane dimethanol and residual amount of catalytic composition comprising Sb and Ti. The polyethylene terephthalate composition is especially useful for large blow moldings and provides a change in the fill point volume after 5 wash cycles of a 2.5 liter blow molded bottle of 14 ml or less.
Type:
Grant
Filed:
August 30, 2019
Date of Patent:
March 1, 2022
Assignee:
ALPEK POLYESTER, S.A. DE C.V.
Inventors:
David Eugene Thompson, Damian Adrian Salazar Hernandez