Abstract: Described herein is a quenching system comprising a spinneret to spin molten polymer, a quench stack disposed operatively below the spinneret and the flow communication with the spinneret, a first means to provide a first stream of ambient air to provide partially-quenched solidified fibers of the molten polymer spun through the spinneret, at a solidification temperature and a second means to provide a second stream of conditioned air at a below-ambient temperature for further quenching the partially quenched solidified fibers, wherein the second stream of the conditioned air is provided through an adapter placed operatively below a region where the molten polymer solidifies partially.

Abstract: A continuous process for manufacturing a polyester includes introducing reactant components including a terephthalic acid slurry having an ethylene glycol to terephthalic acid molar ratio of about 2 and a TiO2 slurry to an initial reactor vessel and stirring the reactant components at greater than 0 to 200 rpm to form an oligomer; transferring the oligomer, phosphoric acid, and at least one additive (carbon black, 5-sulfoisophthalic acid, 5-sulfoisophthalic acid dimethyl ester, and/or 5-sulfoisophthalic acid diglycolate) to an intermittent reactor vessel and stirring at 400 rpm to 1000 rpm to form an intermediate, wherein the oligomer, the at least one additive, and the phosphoric acid have a residence time of from 1 minute to 5 minutes in the intermittent vessel; and polymerizing the intermediate in a final reactor vessel at a temperature of 285° C. to 320° C., and in the absence of a polyethylene glycol, to obtain the polyester.

Abstract: The present disclosure relates to a tablet comprising at least one property modifying agent adapted to modify at least one property of a melt processable polymer and at least one processing aid having softening temperature lower than or equal to the melt processing temperature of the melt processable polymer.

Abstract: Described herein is a quenching system comprising a spinneret to spin molten polymer, a quench stack disposed operatively below the spinneret and the flow communication with the spinneret, a first means to provide a first stream of ambient air to provide partially-quenched solidified fibers of the molten polymer spun through the spinneret, at a solidification temperature and a second means to provide a second stream of conditioned air at a below-ambient temperature for further quenching the partially quenched solidified fibers, wherein the second stream of the conditioned air is provided through an adapter placed operatively below a region where the molten polymer solidifies partially.

Abstract: The present disclosure provides a polyester polymer product which contains partially or fully cobalt-neutralized organic sulphonic acid component and which is substantially free of ether and its preparation. The present disclosure also provides an oxygen scavenging composition made from a mixture of the polyester polymer product of the present disclosure, an organic oxidizable polymeric component and optionally at least one additional polyester component. The present disclosure further provides a packaging article defined by walls having an oxygen transmission rate (OTR) less than 0.2 cc·m?2 day?1 at 0.28 mm thickness and its preparation.

Abstract: The present disclosure relates to a tablet comprising at least one property modifying agent adapted to modify at least one property of a melt processable polymer and at least one processing aid having softening temperature lower than or equal to the melt processing temperature of the melt processable polymer.

Abstract: The present disclosure provides a polyester polymer product which contains partially or fully cobalt-neutralized organic sulphonic acid component and which is substantially free of ether and its preparation. The present disclosure also provides an oxygen scavenging composition made from a mixture of the polyester polymer product of the present disclosure, an organic oxidizable polymeric component and optionally at least one additional polyester component. The present disclosure further provides a packaging article defined by walls having an oxygen transmission rate (OTR) less than 0.2 cc·m?2 day?1 at 0.28 mm thickness and its preparation.

Abstract: A continuous polymerization process where one or more stirred vessels (intermittent reactor vessels) are employed in oligomer transfer line for mixing additives. An additive is added in the stirred vessel either as a solution or as slurry. The additive may or may not be reactive with the other monomer of the polyester molecule. The additive reacts with the monomer and incorporates in the polymer backbone in one of the embodiment. One or more further additives are mixed with the pre-reactor monomer mix and are charged in the first reactor or charged through the stirred vessel in the form of single slurry or solution or multiple slurries or solutions. Any further vessels employed provide higher residence time proportionate to output and use of such vessels in reactor system is independent of the any further additives.

Abstract: The invention relates to active oxygen-scavenger based polymer resin composition for oxygen barrier, a process for preparing such composition and articles such as bottles or other format of packaging. These compositions have an ability to consume an amount of oxygen and thereby deplete the level of the same from the immediate atmosphere surrounding the packaged content and at ambient temperatures.