Lavonna S Buehrig

US Patent:

H002088, Nov 4, 2003

Filed:

Jun 27, 2002

Appl. No.:

10/185915

Inventors:

Steven Lee Stafford - Gray TN
Lavonna Suzanne Buehrig - Kingsport TN
Louis Thomas Germinario - Kingsport TN
Terrill M. McGee - Blountville TN
Gary Wayne Minnick - Kingsport TN
Eric Jon Moskala - Kingsport TN
Michael Eugene Donelson - Gray TN

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

B29C 3902

US Classification:

264532, 53471

Abstract:

A method for reducing or eliminating plate-out during the process used to produce stretch blow molded containers from polyester preforms by crystallizing the low molecular weight polyester molecules in or on the preform exterior surface before stretch blow molding the preform into a container. The molecules are crystallized using a crystallization process selected from (1) treating the outer surface of the preform with a solvent that is capable of crystallizing low molecular weight polyester molecules in polyester or (2) heating the outer surface of the preform to a temperature and for a time suitable for crystallizing low molecular weight polyester molecules in polyester. Plate-out is reduced because the crystallized molecules do not migrate out of the preform and form plate-out deposits on the mold.

US Patent:

H002132, Nov 1, 2005

Filed:

Jun 27, 2002

Appl. No.:

10/186008

Inventors:

Steven Lee Stafford - Gray TN, US
Lavonna Suzanne Buehrig - Kingsport TN, US
Louis Thomas Germinario - Kingsport TN, US
Eric Jon Moskala - Kingsport TN, US
David Paul Fischer - Kingsport TN, US
Michael Eugene Donelson - Gray TN, US
Steven Matthew Scheffer - Burlington, CA
Darrin James Nicholson - Waterdown, CA
Maurice Harold Hodgson - Richmond, CA
Fabian Clarke Pike - Vancouver, CA
Jeff Erich Neff - Port Coquitlam, CA

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

B29D022/00

US Classification:

428 357

Abstract:

Polyester containers having a reduced coefficient of friction (“COF”) are produced by increasing the surface roughness of the polyester using either thermal crystallization or solvent crystallization. Because the low COF reduces or eliminates friction between polyester containers, the containers do not become entangled and disrupt the manufacturing process. As a result, the containers move easily through typical conveying and filling lines in manufacturing processes that use the containers.

US Patent:

20030141625, Jul 31, 2003

Filed:

Feb 21, 2003

Appl. No.:

10/371698

Inventors:

Marcus Shelby - Kingsport TN, US
Lavonna Buehrig - Gray TN, US
Benjamin Gamble - Kingsport TN, US

International Classification:

B29C047/06

US Classification:

264/173110, 264/173160

Abstract:

A process for coextrusion-molding a multilayer article comprising coextruding at a selected coextuding temperature (i) a first outer polymer resin layer having a) a viscosity, b) a melting temperature, and c) a degradation temperature at the selected coextuding temperature, and (ii) a second inner polymer resin layer having a) a viscosity, b) a melting temperature, and c) a degradation temperature at the selected coextuding temperature, wherein the ratio of the outer polymer resin viscosity to the inner polymer resin viscosity at the coextuding temperature is less than or equal to about 1 and the coextuding temperature is above the melting temperature of the highest melting resin and below the degradation temperature of the lowest degrading resin to form a multilayer article.

US Patent:

20040030029, Feb 12, 2004

Filed:

Jul 3, 2001

Appl. No.:

09/898621

Inventors:

Stephen Weinhold - Kingsport TN, US
Lavonna Buehrig - Kingsport TN, US
Robert Estep - Kingsport TN, US
David Fischer - Kingsport TN, US

International Classification:

C08K003/04
C08K003/08

US Classification:

524/496000, 524/439000

Abstract:

Disclosed is a polyester composition comprising: I. a polyester consisting essentially of (i) diacid residues consisting essentially of terephthalic residues; and (ii) diol residues consisting essentially of about 92 to 98 mole percent ethylene glycol residues, about 1 to 4 mole percent diethylene glycol (DEG) residues, and about 1 to 4 mole percent 1,4-cyclohexanedimethanol (CHDM) residues; and having an inherent viscosity (IhV)which satisfies the equations IhV-X-Y=0.74 to 0.80, wherein X is the mole fraction of CHDM and Y is the mole fraction of DEG; and II. at least one reheat enhancing aid in an amount sufficient to provide between about 5 and 25% reheat improvement. Also disclosed are heat set containers suitable for packaging hot-filled liquids and processes for the manufacture of such heat set containers.

US Patent:

20040228993, Nov 18, 2004

Filed:

Jun 4, 2004

Appl. No.:

10/861989

Inventors:

Stephen Weinhold - Kingsport TN, US
Lavonna Suzanne Buehrig - Kingsport TN, US
Robert Noah Estep - Kingsport TN, US
David Paul Fischer - Kingsport TN, US

International Classification:

B65D001/00

US Classification:

428/035700, 428/473500, 264/537000

Abstract:

Disclosed is a polyester composition comprising: I. a polyester consisting essentially of (i) diacid residues consisting essentially of terephthalic residues; and (ii) diol residues consisting essentially of about 92 to about 98 mole percent ethylene glycol residues, about 1 to about 4 mole percent diethylene glycol (DEG) residues, and about 1 to about 4 mole percent 1,4-cyclohexanedimethanol (CHDM) residues; and having an inherent viscosity (IhV) which satisfies the equations IhV-X-Y=0.74 to 0.80, wherein X is the mole fraction of CHDM and Y is the mole fraction of DEG; and II. at least one reheat enhancing aid in an amount sufficient to provide between about 5 and about 25% reheat improvement. Also disclosed are heat set containers suitable for packaging hot-filled liquids and processes for the manufacture of such heat set containers.

US Patent:

20060148957, Jul 6, 2006

Filed:

Dec 5, 2005

Appl. No.:

11/294249

Inventors:

Mark Stewart - Kingsport TN, US
Robert Estep - Kingsport TN, US
Benjamin Gamble - Kingsport TN, US
Michael Cliffton - Kingsport TN, US
Donna Quillen - Kingsport TN, US
Lavonna Buehrig - Kingsport TN, US
Venkat Govindarajan - Naperville IL, US
Matthew Dauzvardis - Manhattan IL, US

Assignee:

Constar International Inc. - Philadelphia PA
Eastman Chemical Company - Kingsport TN

International Classification:

C08K 3/08

US Classification:

524440000

Abstract:

The present invention concerns a method for forming an article by combining a polyester polymer and an oxygen scavenging composition comprising a polyamide in the presence of zinc and a cobalt in a melt processing zone to form a melt; and forming an article such as a sheet or preform from the melt. Also provided are molten formulated polyester polymer compositions containing a blend of a polyethylene terephthalate polymer and a polyamide polymer along with zinc and cobalt. Articles made from the composition are resistant to the transmission of oxygen, possess short induction periods, and have high capacity for sustaining lengthy periods of low oxygen transmission through the wall of the article.

US Patent:

6562276, May 13, 2003

Filed:

Mar 1, 2000

Appl. No.:

09/516311

Inventors:

Marcus David Shelby - Kingsport TN
Lavonna Suzanne Buehrig - Gray TN
Benjamin Bradford Gamble - Kingsport TN

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

B29C 4500

US Classification:

2643288

Abstract:

A process for coinjection-molding a multilayer article comprising coinjecting at a selected coinjecting temperature (i) a first outer polymer resin layer having a viscosity at the selected coinjecting temperature, and (ii) a second inner polymer resin layer having a viscosity at the selected coinjecting temperature, wherein the ratio of the outer polymer resin viscosity to the inner polymer resin viscosity at the coinjecting temperature is less than or equal to about 2 and the coinjecting temperature is above the melting temperature of the highest melting resin and below the degradation temperature of the lowest degrading resin to form a multilayer article. Processes for coextrusion are also provided.