Oxygen scavenging condensation copolymers for bottles and packaging articles

THE INVENTION REFERS TO DEOXIGENATING COMPOSITIONS THAT INCLUDE CONDENSATION COPOLYMERS THAT MAINLY CONTAIN POLYESTER SEGMENTS AND A DEOXIGENANT DOSE OF POLYOLEFINICAL OLIGOMER SEGMENTS. POLYESTER SEGMENTS INCLUDE SEGMENTS DERIVED FROM PACKING POLYESTERS AND CLASSICAL BOTTLES SUCH AS PET AND PEN. THE COPOLYMERS ARE PREFERREDLY FORMED BY TRANSESTERIFICATION THROUGH A REACTIVE EXTRUSION AND SUFFER TO UNDERSTAND APPROXIMATELY BETWEEN 0.5 AND 12% BY WEIGHT OF POLYOLEFINICAL OLIGOMER SEGMENTS. THE POLYCONDENSATES ARE ABLE TO ABSORB AT LEAST 0.4% OXYGEN PER GRAMO OF COPOLIMERO IN SOLID STATE, AT AMBIENT TEMPERATURE AND ARE SUPPLIED TO BE USED IN THE FORM OF COATS IN FILMS, COATINGS, PACKAGES, BOTTLES, ETC. DEOXIGENANTS IN THE BOTTLES ALLOWS TO MANUFACTURE A TRANSPARENT AND RIGID BOTTLE THAT PRESENTS THE ASPECT OF UNFORGETTED POLYESTER BOTTLES. IN A SERIES OF PREFERRED EMBODIMENTS, BOTTLES MANUFACTURED THROUGH THE POLYCHONDENSED DEOXIGENANTS OF THE INVENTION, ARE CONSTITUTED WITH MORE THAN 99.4% IN POLYESTER WEIGHT AND CAN BE RECYCLED WITH OTHER POLYOTTER BOTTLES.