Eastman Chemical Company

Grupo Petrotemex S.a. De C.v.

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

Michael Paul Ekart

Mary Therese Jernigan

Larry Cates Windes

Bruce Roger DeBruin

Richard Gill Bonner

Frederick Leslie Colhoun

Stephen Weinhold

Thomas Michael Pell, Jr

Cory Lee Wells

Thomas Lloyd Yount

David Allen Sliger

David Dunlap Cornell

Rodney Scott Armentrout

Luciano Dalmacio Samitier

Bruce Roger Debruin

Damon Bryan Shackelford

Alan George Wonders

Alan W White

Xianchun Wu

Daryl Bitting

Donald Lee Carver

David Eugene Slivensky

Dale Milton Blakely

Lanney Calvin Treece

Max Lamar Carroll, Jr

Noah Glenn McMillan

Benjamin Bradford Gamble

Eric Gray Olsen

Perry Michael Murdaugh, Sr

Candace M Stipe

William Christopher Ketchie

William H Heise

William Speight Murdoch

James Earl Hataway

Raymond Isaac

Johnny W Shadden

Robert Todd Harris

Andrew S Hudson

Gary Walton Popwell

Billy J Reeves

Travis Wynn Keever

Damon Brian Shackelford

Rachel Elizabeth McLendon

Anne-Martine Sherbeck Jackson

Alan Wayne White

Andrew Steven Hudson

Thomas Lloyd Yout

Richard Gill c/o Eastman Chemical Co Bonner

Disclosed is a method for treating the product stream from a polyester methanolysis depolymerization process wherein the product stream includes dimethyl terephthalate and one or more side species selected from the group consisting of dimethyl phthalate, dimethyl isophthalate, bisphenol-A, an adipic acid diester and colorants. The method includes a) hydrogenating said dimethyl terephthalate to form one or more of dimethyl 1,4-cyclohexanedicarboxylate and 1,4-cyclohexanedimethanol; and (b) hydrogenating one or more of said one or more side species of said product stream. A method for depolymerization of polyester is also described.

Process for treating polyester methanolysis depolymerization product streams

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves integrating a pyrolysis facility with a cracker facility by introducing at least a stream of r-pyrolysis gas into the cracker facility. In the cracker facility, the r-pyrolysis gas may be separated to form one or more recycle content products, and can enhance the operation of the facility.

Chemical recycling of plastic-derived streams to a cracker separation zone

Process for preparing copolyesters by introducing TPA, EG, and CHDM at an EG:TPA molar ratio of 2.3:1 to 2.7:1 into a reaction zone; reacting TPA with EG and CHDM at a temperature of at least 250&#xb0; C. and pressure of up to 40 psi to form a first esterification product; passing the first esterification product to a reaction zone; esterifying the first esterification product at a temperature of at least 250&#xb0; C. and pressure of up to 20 psi to form a second esterification product, passing the second esterification product to a reaction zone; polycondensing the second esterification product in the presence of a catalyst to form a prepolymerization product; passing the prepolymerization product to one or more reaction zones; and polycondensing the prepolymerization product in the presence of the catalyst to form a copolyester comprising 1.0 wt % or less of DEG, without requiring the use of DEG-suppressing additives.

Copolyester from terephthalic acid containing low diethylene glycol

Polyester polymer particle spheroids comprising a polyester polymer including: a carboxylic acid component containing at least 90 mole % of the residues of terephthalic acid, derivates of terephthalic acid, naphthalene-2,6-dicarboxylic acid, and/or derivatives of naphthalene-2,6-dicarboxylic acid, and a hydroxyl component containing from 90 to 96 mole % of the residues of ethylene glycol, based on 100 mole percent of the carboxylic acid component residues and 100 mole percent hydroxyl component residues in the polyester polymer, wherein said particle has an It.V. of at least 0.72 dL/g, and the It.V. at the surface of the particle is from 0.02 dL/g to less than 0.25 dL/g higher than the It.V. at the center of the particle, and wherein the polyester polymer spheroids are not solid state polymerized.

Polyester polymer particles having a small surface to center molecular weight gradient

A bulk of polyester polymer particles comprising polyester polymer comprising greater than 75% virgin polyester polymer, the particles having:

Low melting polyester polymers

A process for crystallizing a polyester polymer by introducing a molten polyester polymer, such as a polyethylene terephthalate polymer, into a liquid medium at a liquid medium temperature greater than the Tof the polyester polymer, such as at a temperature ranging from 100&#xb0; C. to 190&#xb0; C., and allowing the molten polyester polymer to reside in the liquid medium for a time sufficient to crystallize the polymer under a pressure equal to or greater than the vapor pressure of the liquid medium. A process flow, underwater cutting process, crystallization in a pipe, and a separator are also described.

Thermal crystallization of a molten polyester polymer in a fluid

A melt phase process for making a polyester polymer melt phase product by adding an antimony containing catalyst to the melt phase, polycondensing the melt containing said catalyst in the melt phase until the It.V. of the melt reaches at least 0.75 dL/g. Polyester polymer melt phase pellets containing antimony residues and having an It.V. of at least 0.75 dL/g are obtained without solid state polymerization. The polyester polymer pellets containing antimony residues and having an It.V. of at least 0.70 dL/g obtained without increasing the molecular weight of the melt phase product by solid state polymerization are fed to an extruder, melted to produce a molten polyester polymer, and extruded through a die to form shaped articles. The melt phase products and articles made thereby have low b* color and/or high L* brightness, and the reaction time to make the melt phase products is short.

High IV melt phase polyester polymer catalyzed with antimony containing compounds

A process for feeding a slurry of thermoplastic synthetic polymer particles such as polyethylene terephthalate homopolymers and copolymers in combination with a liquid such as water at a liquid temperature greater than the normal boiling point of the liquid, under a pressure greater than the vapor pressure of the liquid at the liquid temperature, into a separation zone such as a centrifugal dryer, and within the separation zone:

Process for separating and drying thermoplastic particles under high pressure

Spheroidal polyester polymer particles, as well as preforms and stretch blow molded bottles made from the spheroidal particles, are provided which have:

Spheroidal polyester polymer particles

A bulk of polyester polymer particles comprising polyester polymer comprising greater than 75% virgin polyester polymer, the particles having: The particles may also have a degree of crystallinity within a range of 20% and a maximum degree of crystallinity Tdefined by the equation:=50%&#x2212;where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues, and OH is the total mole % of all hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of hydroxyl functional compounds residues. The preforms and bottles made from these particles can be obtained by melt processing these particles at either lower overall power, faster screw speeds, lower residence time, or lower overall cycle time to thereby reduce the level of residual acetaldehyde generated in the melt.

The disclosure describes a reactor operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The reactor can include a horizontally elongated reactor segment containing a horizontally elongated tubular member and a tray disposed within the tubular member. The reaction medium can flow through the reactor segment on the tray and on the bottom of the tubular member in generally opposite directions. The reactor also can include a header and multiple horizontally elongated reactor segments coupled to the header and spaced vertically apart from one another. The reactor can be used to produce polyesters.

Multi-level tubular reactor with internal tray

A multi-level tubular reactor operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The tubular reactor can include a plurality of horizontally elongated and vertically spaced reactor segments coupled to and extending outwardly from a common header. One or more of the reactor segments can contain a tray that divides the internal volume of the reactor segment into upper and lower chambers. The reaction medium can flow away from the header in the upper chambers and back to the header in the lower chambers.

Multi-level tubular reactor with vertically spaced segments

Growing community of inventors

Kingsport, TN, United States of America

Michael Paul Ekart