Eastman Chemical Company

Grupo Petrotemex S.a. De C.v.

Grupo Petromex, S.a. De C.v.

Robert Noah Estep

Steven Lee Stafford

Stephen Weinhold

Alan George Wonders

Bruce Roger DeBruin

Mary Therese Jernigan

Steven Paul Bellner

Tommy Ray Maddox, Ii

John Alan Wabshall, Jr

John Guy Franjione

Michael Eugene Donelson

Marcus David Shelby

Mark Edward Stewart

Frederick Leslie Colhoun

James Carl Williams

Emerson Eston Sharpe, Jr

Benjamin Bradford Gamble

Edward Lewis Boochard

Thomas Roger Clark

Lawrence A Coppari

Steven S Duncan

Larry Wayne Branscome

Ii Tommy Ray Maddox

John G Franjione

A process for producing non-solid-stated polyester polymer particles having one or more properties similar to polyester polymer particles that have undergone solid-state processing.

Production of non-solid-stated polyester particles having solid-stated properties

Disclosed is a process for a melt processing a polyethylene terephthalate resin characterized by one or more of the following. The polyester particles may have at least two melting peaks wherein one of the at least two melting peaks is a low peak melting point with a range from 140&#xb0; C. to 220&#xb0; C., or from 140&#xb0; C. to 230&#xb0; C., and having a melting endothermic area of at least the absolute value of 1 J/g. The polyester particles may have one or more melting peaks at least one of which when measured on a DSC first heating scan has a heating curve departing from a baseline in the endothermic direction at a temperature of less than or equal to 200&#xb0; C. The polyester particles may have an It.V. at their surface which is less than 0.25 dL/g higher than the It.V. at their center. The polyester particles may have not been solid stated. The melt processing device comprises a screw with a total length, L, a feed zone length in the range from 0.16L and 0.45L, a taper angle, &#x3c6;, in the range from 0.5 degrees and 5.0 degrees and a compression ratio, CR, in the range from 2.0 and 5.0.

Screw designs having improved performance with low melting PET resins

A process for producing non-solid-stated polyester polymer particles having one or more properties similar to polyester polymer particles that have undergone solid-state processing. In one embodiment, the process comprises (a) forming polyester polymer particles from a polyester polymer melt; (b) quenching at least a portion of the particles, (c) drying at least a portion of the particles, (d) crystallizing at least a portion of the particles, (e) annealing at least a portion of the particles. At all points during and between steps (b) through (e), the average bulk temperature of the particles is maintained above 165&#xb0; C.

Polyester composition with modifier hydroxyl compound

A solid concentrate is provided having a combination of a transition metal present in an amount ranging from 1000 to 40,000 ppm (weight by metal) and a polyester polymer present in an amount of at least 40 wt. % based on the weight of the concentrate. Concentrates made with highly modified polyester polymers are easy to compound with transition metals forming less brittle polymer upon melt extrusion. Bottle preforms and oxygen scavenging bottles can be made from these concentrates by combining solid polyester particles, solid polyamide particles, and solid these concentrate particles c into an melt processing zone, forming a melt, and forming an article directly from the melt. The b* color and the L* color and the haze levels of the preforms are improved over the preforms made with liquid carriers instead of solid concentrates. The particles are also advantageously simultaneously dried in a drying zone under conditions effective to at least partially remove moisture from the blend to thereby further improve the b* color and L* color.

Polyester based cobalt concentrates for oxygen scavenging compositions

Base cup for receiving a container body bottom and for reducing heat gain to fluid contents in the container body. A passive base cup is made of foam and has a reflective layer on a majority of the outer surface thereof, or made of plastic, with an outer reflective layer, and optionally a foam layer. An active base cup serves to actively cool the fluid in the container, by including a compartment therein with a fluid that can be frozen. Again, a reflective layer and an optional foam layer extend over a majority of the outer surface of the cup. The reflective layer materials have a density different than the cup materials to facilitate recycling.

Container base cup having reduced heat gain

Liquid container

Growing community of inventors

Kingsport, TN, United States of America

Robert Noah Estep