Susan R Sims

US Patent:

7368523, May 6, 2008

Filed:

Sep 16, 2005

Appl. No.:

11/228672

Inventors:

Zhiyong Xia - Kingsport TN, US
Steven Lee Stafford - Gray TN, US
Susan Sims - Kingsport TN, US
Frederick Leslie Colhoun - Kingsport TN, US

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C08K 3/22

US Classification:

528279, 528503, 428 347, 428 359, 524783, 524413

Abstract:

Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles that provide one or more of the following advantages: improving the reheat properties of the compositions, improving the color of the compositions through reduced yellowness, and improving the UV-blocking properties of the compositions. Processes for making such compositions are also disclosed. The titanium nitride particles may be incorporated in the polyester by melt compounding, or may be added at any stage of the polymerization, such as during the melt-phase of the polymerization. A range of particle sizes may be used, as well as a range of particle size distributions. The polyester compositions are suitable for use in packaging made from processes in which a reheat step is desirable, or decreased yellowness is desired, or increased resistance to the effects of ultraviolet light is desired, or any combination of the foregoing.

US Patent:

8039577, Oct 18, 2011

Filed:

Mar 3, 2008

Appl. No.:

12/073244

Inventors:

Zhiyong Xia - Kingsport TN, US
Steven Lee Stafford - Gray TN, US
Susan Sims - Kingsport TN, US
Frederick Leslie Colhoun - Kingsport TN, US

Assignee:

Grupo Petrotemex, S.A. de C.V. - San Pedro Graza Garcia

International Classification:

C08K 3/22

US Classification:

528279, 528503, 524413, 524783

Abstract:

Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles that provide one or more of the following advantages: improving the reheat properties of the compositions, improving the color of the compositions through reduced yellowness, and improving the UV-blocking properties of the compositions. Processes for making such compositions are also disclosed. The titanium nitride particles may be incorporated in the polyester by melt compounding, or may be added at any stage of the polymerization, such as during the melt-phase of the polymerization. A range of particle sizes may be used, as well as a range of particle size distributions. The polyester compositions are suitable for use in packaging made from processes in which a reheat step is desirable, or decreased yellowness is desired, or increased resistance to the effects of ultraviolet light is desired, or any combination of the foregoing.

US Patent:

20080255280, Oct 16, 2008

Filed:

Apr 11, 2007

Appl. No.:

11/786395

Inventors:

Susan Sims - Kingsport TN, US
Mark Edward Stewart - Kingsport TN, US
Jason Christopher Jenkins - Kingsport TN, US
Rodney Scott Armentrout - Kingsport TN, US
Richard Dalton Peters - Kingsport TN, US
Michael Duane Cliffton - Kingsport TN, US
Frederick Leslie Colhoun - Kingsport TN, US
Stephen Weinhold - Kingsport TN, US

International Classification:

C08K 3/08
C07F 7/00

US Classification:

524176, 524174, 524413, 524414, 524437, 524440

Abstract:

Polymer blends suitable for packaging are disclosed that include a transition metal; one or more polyamide homopolymers or copolymers; and one or more polyethylene terephthalate homopolymers or copolymers obtained by a melt phase polymerization using a catalyst system comprising aluminum atoms in an amount, for example, from about 3 ppm to about 60 ppm and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues in an amount, for example, from about 1 ppm to about 25 ppm, in each case based on the weight of the one or more polyethylene terephthalate homopolymers or copolymers The polymer blends disclosed exhibit improved oxygen-scavenging activity compared with blends made using polymers prepared with conventional catalyst systems.