Patents Assigned to Wellman, Inc.
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Patent number: 8304510Abstract: The present invention relates to slow-crystallizing, titanium-catalyzed polyethylene terephthalate resins that are useful for making high-strength, high-clarity bottles that possess improved resistance to stress cracking and thermal creep. The polyethylene terephthalate resins possess improved reheating profiles and are especially useful for making polyester articles that have exceptional clarity, dimensional stability, and thermal stability.Type: GrantFiled: December 27, 2010Date of Patent: November 6, 2012Assignee: Wellman Inc.Inventors: David Eugene Thompson, Carl Steven Nichols, Tony Clifford Moore, Sharon Sue Griffith, Billy Mack Humelsine, Robert Joseph Schiavone
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Publication number: 20120148771Abstract: The present invention relates to titanium-catalyzed polyethylene terephthalate resins that are capable of being formed into articles (e.g., carbonated soft drink and water bottle preforms) at reduced injection-molding cycle times. In particular, the titanium-catalyzed polyethylene terephthalate resins of the present invention can be formed into carbonated soft drink bottle preforms at reduced injection-molding cycle times to yield high-clarity, carbonated soft drink bottles that possess satisfactory resistance to stress cracking and thermal creep.Type: ApplicationFiled: August 16, 2011Publication date: June 14, 2012Applicant: WELLMAN, INC.Inventors: David Eugene Thompson, Carl Steven Nichols, Tony Clifford Moore, Sharon Sue Griffith, Billy Mack Humelsine, Robert Joseph Schiavone
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Publication number: 20110212282Abstract: The present invention relates to slow-crystallizing, titanium-catalyzed polyethylene terephthalate resins that are useful for making high-strength, high-clarity bottles that possess improved resistance to stress cracking and thermal creep. The polyethylene terephthalate resins possess improved reheating profiles and are especially useful for making polyester articles that have exceptional clarity, dimensional stability, and thermal stability.Type: ApplicationFiled: December 27, 2010Publication date: September 1, 2011Applicant: WELLMAN, INC.Inventors: David Eugene Thompson, Carl Steven Nichols, Tony Clifford Moore, Sharon Sue Griffith, Billy Mack Humelsine, Robert Joseph Schiavone
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Patent number: 7858731Abstract: The invention embraces polyester resins and containers that include surface-modified talc. The invention also embraces a method for the late introduction of surface-modified talc via a reactive carrier to achieve a polyester resin that is capable of being formed into low-haze, high-clarity bottles possessing reduced coefficient of friction.Type: GrantFiled: May 29, 2008Date of Patent: December 28, 2010Assignee: Wellman, Inc.Inventors: Walter Lee Edwards, Carl Steven Nichols, Robert Joseph Schiavone, Sharon Sue Griffith, Tony Clifford Moore
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Patent number: 7829656Abstract: The invention is a method for making condensation polymers, such as polyethylene terephthalate polyester. The method includes introducing a catalyst system, which includes a coordination catalyst component and an acid component, to a polycondensation reaction.Type: GrantFiled: January 9, 2009Date of Patent: November 9, 2010Assignee: Wellman, Inc.Inventors: Carl Steven Nichols, Tony Clifford Moore, Daniel Allen Huenefeld
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Publication number: 20100221472Abstract: The present invention relates to slow-crystallizing, titanium-catalyzed polyethylene terephthalate resins that are useful for making high-strength, high-clarity bottles that possess improved resistance to stress cracking and thermal creep. The polyethylene terephthalate resins possess improved reheating profiles and are especially useful for making polyester articles that have exceptional clarity, dimensional stability, and thermal stability.Type: ApplicationFiled: November 20, 2009Publication date: September 2, 2010Applicant: WELLMAN, INC.Inventors: David Eugene Thompson, Carl Steven Nichols, Tony Clifford Moore, Sharon Sue Griffith, Billy Mack Humelsine, Robert Joseph Schiavone
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Patent number: 7763701Abstract: The invention is a method for making condensation polymers, such as polyethylene terephthalate polyester. The method includes introducing to a polycondensation reaction a catalyst system that includes a coordination catalyst and a composite catalyst, which includes an acid component and an auxiliary component.Type: GrantFiled: January 9, 2009Date of Patent: July 27, 2010Assignee: Wellman, Inc.Inventors: Carl Steven Nichols, Tony Clifford Moore, Daniel Allen Huenefeld
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Patent number: 7759449Abstract: The invention is a method for the late introduction of additives into polyethylene terephthalate. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the polyethylene terephthalate, thereby binding the reactive carrier in the polyethylene terephthalate resin and preventing the emergence of the reactive carrier and additives from the polyethylene terephthalate during subsequent thermal processing.Type: GrantFiled: October 8, 2004Date of Patent: July 20, 2010Assignee: Wellman, Inc.Inventors: Carl S. Nichols, Tony Clifford Moore
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Publication number: 20100006191Abstract: The electrical conductivity of a wrought processed, high strength, age hardened Be—Cu alloy is enhanced by overaging the alloy in manufacture.Type: ApplicationFiled: July 9, 2008Publication date: January 14, 2010Applicant: BRUSH WELLMAN, INC.Inventors: John F Wetzel, John C. Harkness
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Publication number: 20090306313Abstract: The present invention relates to methods for making polyethylene terephthalate resin in which a titanium-nitride polycondensation catalyst is introduced prior to or during the initial stages of esterification or transesterification.Type: ApplicationFiled: June 5, 2009Publication date: December 10, 2009Applicant: WELLMAN, INC.Inventor: Carl Steven Nichols
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Publication number: 20090198022Abstract: The invention is a method for making condensation polymers, such as polyethylene terephthalate polyester. The method includes introducing a catalyst system, which includes a coordination catalyst component and an acid component, to a polycondensation reaction.Type: ApplicationFiled: January 9, 2009Publication date: August 6, 2009Applicant: WELLMAN, INC.Inventors: Carl Steven Nichols, Tony Clifford Moore, Daniel Allen Huenefeld
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Publication number: 20090187002Abstract: The invention is a method for making condensation polymers, such as polyethylene terephthalate polyester. The method includes introducing to a polycondensation reaction a catalyst system that includes a coordination catalyst and a composite catalyst, which includes an acid component and an auxiliary component.Type: ApplicationFiled: January 9, 2009Publication date: July 23, 2009Applicant: Wellman, Inc.Inventors: Carl Steven Nichols, Tony Clifford Moore, Daniel Allen Huenefeld
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Publication number: 20090176046Abstract: The present invention relates to slow-crystallizing, titanium-catalyzed polyethylene terephthalate resins that are useful for making high-strength, high-clarity bottles that possess improved resistance to stress cracking and thermal creep. The polyethylene terephthalate resins possess improved reheating profiles and are especially useful for making polyester articles that have exceptional clarity, dimensional stability, and thermal stability.Type: ApplicationFiled: December 15, 2008Publication date: July 9, 2009Applicant: WELLMAN, INC.Inventors: David Eugene Thompson, Carl Steven Nichols, Tony Clifford Moore, Sharon Sue Griffith, Billy Mack Humelsine, Robert Joseph Schiavone
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Publication number: 20090093600Abstract: The present invention relates to methods for forming polyester resins in one or more falling film reactors.Type: ApplicationFiled: October 27, 2008Publication date: April 9, 2009Applicant: WELLMAN, INC.Inventors: Tony Clifford Moore, Sharon Sue Griffith, David Eugene Thompson, Neil Richard Kluesener, James Reed Honeycutt
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Publication number: 20080274317Abstract: The present invention relates to titanium-catalyzed polyethylene terephthalate resins that are capable of being formed into articles (e.g., carbonated soft drink and water bottle preforms) at reduced injection-molding cycle times. In particular, the titanium-catalyzed polyethylene terephthalate resins of the present invention can be formed into carbonated soft drink bottle preforms at reduced injection-molding cycle times to yield high-clarity, carbonated soft drink bottles that possess satisfactory resistance to stress cracking and thermal creep.Type: ApplicationFiled: May 21, 2008Publication date: November 6, 2008Applicant: WELLMAN, INC.Inventors: David Eugene Thompson, Carl Steven Nichols, Tony Clifford Moore, Sharon Sue Griffith, Billy Mack Humelsine, Robert Joseph Schiavone
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Publication number: 20080274316Abstract: The invention embraces polymer resins, such as polyethylene terephthalate resin, that includes surface-compatibilized alumina. The invention also embraces methods of making polyethylene terephthalate resins that are capable of being formed into low-haze, high-clarity articles possessing reduced coefficient of friction.Type: ApplicationFiled: May 13, 2008Publication date: November 6, 2008Applicant: WELLMAN, INC.Inventors: Sharon Sue Griffith, Tony Clifford Moore, Robert Joseph Schiavone
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Publication number: 20080009574Abstract: The present invention relates to polyamide-polyester barrier blends that possess improved gas barrier, clarity, and organoleptic properties, as well as containers (e.g., bottles), sheets, and films formed from such barrier resins. The invention further relates to polyamide-compatible polyethylene terephthalate resins that are useful in forming these improved polyamide-polyester polymer blends. The invention still further relates to cost-effective recycling of articles formed from polyamide-polyester polymer blends.Type: ApplicationFiled: July 20, 2007Publication date: January 10, 2008Applicant: WELLMAN, INC.Inventors: Daniel Huenefeld, Carl Nichols
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Publication number: 20070231519Abstract: A self-texturing hollow fiber that exhibits a desirable tendency to coil rather than to bend sharply or zig-zag. In one embodiment the invention is a hollow polymer filament having a generally cylindrical cross-section. The filament is further defined by a cylindrical wall formed of at least two generally C-shaped sections, each section including first and second ends separated by an intermediate portion in which no two points along the cross-section of the wall corresponding to the intermediate portion share the same width. In another aspect, the invention is a coiled bilateral hollow polymeric filament in which the two component polymers are identical except for their degree of orientation. The filament is further defined by a non-linear wall formed of at least two non-linear sections.Type: ApplicationFiled: June 11, 2007Publication date: October 4, 2007Applicant: Wellman, Inc.Inventors: Frederick Travelute, Evan Basalik
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Publication number: 20070225410Abstract: The present invention relates to imide-modified polyester imide resins. The present invention further relates to articles (e.g., preforms, bottles, containers, sheets, films, fibers, and injection molded parts) formed from these imide-modified polyester imide resins.Type: ApplicationFiled: May 24, 2007Publication date: September 27, 2007Applicant: WELLMAN, INC.Inventors: Walter Edwards, Marion Andrews
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Patent number: 7238770Abstract: The present invention relates to methods of making imide-modified polyester imide resins. The present invention further relates to forming these imide-modified polyester imide resins into articles, such as preforms, bottles, containers, sheets, films, fibers, and injection molded parts.Type: GrantFiled: January 28, 2005Date of Patent: July 3, 2007Assignee: Wellman, Inc.Inventors: Walter L. Edwards, Marion L. Andrews