Patents Represented by Attorney Craig M. Sterner
  • Patent number: 7943216
    Abstract: The present invention comprises a blend of polyester and a partially aromatic polyamide with an ionic compatibilizer and a cobalt salt. This blend can be processed into a container that has both active and passive oxygen barrier and carbon dioxide barrier properties at an improved color and clarity than containers known in the art. The partially aromatic polyamide is preferably meta-xylylene adipamide. The ionic compatibilizer is preferably 5-sodiumsulfoisophthalic acid or 5-zincsulfoisophthalic acid, or their dialkyl esters such as the dimethyl ester (SIM) and glycol ester (SIPEG). The cobalt salt is selected form the class of cobalt acetate, cobalt carbonate, cobalt chloride, cobalt hydroxide, cobalt naphthenate, cobalt oleate, cobalt linoleate, cobalt octoate, cobalt stearate, cobalt nitrate, cobalt phosphate, cobalt sulfate, cobalt (ethylene glycolate), or mixtures of two or more of these. The partially aromatic polyamide is present in a range from about 1 to about 10 wt. % of said composition.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: May 17, 2011
    Assignee: INVISTA North Americal S.ar.l.
    Inventors: Zhenguo Liu, Sanja Mehta, Xiaoyan Huang, David A Schiraldi
  • Patent number: 7919159
    Abstract: The present invention comprises a blend of polyester and a partially aromatic polyamide with an ionic compatibilizer and a cobalt salt. This blend can be processed into a container that has both active and passive oxygen barrier and carbon dioxide barrier properties at an improved color and clarity than containers known in the art. The partially aromatic polyamide is preferably meta-xylylene adipamide. The ionic compatibilizer is preferably 5-sodiumsulfoisophthalic acid or 5-zincsulfoisophthalic acid, or their dialkyl esters such as the dimethyl ester (SIM) and glycol ester (SIPEG). The cobalt salt is selected form the class of cobalt acetate, cobalt carbonate, cobalt chloride, cobalt hydroxide, cobalt naphthenate, cobalt oleate, cobalt linoleate, cobalt octoate, cobalt stearate, cobalt nitrate, cobalt phosphate, cobalt sulfate, cobalt (ethylene glycolate), or mixtures of two or more of these. The partially aromatic polyamide is present in a range from about 1 to about 10 wt. % of said composition.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: April 5, 2011
    Assignee: INVISTA North America S.ar.l.
    Inventors: Zhenguo Liu, Sanjay Mehta, Xiaoyan Huang, David A. Schiraldi
  • Patent number: 7879112
    Abstract: The present invention relates generally to stain-resist compositions, and particularly, but not by way of limitation, to fibers and textiles treated with stain-resist compositions.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: February 1, 2011
    Assignee: INVISTA North America S.ar.l.
    Inventor: Yanhui Sun
  • Patent number: 7879930
    Abstract: The present invention relates to a melt blend of a base polymer, an oxidizable organic polymer, a transition metal salt catalyst and a colorant that does not completely deactivate the catalyzed oxidation. A preferred colorant, yields in an article made from the polymer melt blend a Catalyst Deactivation Factor (CDF) of less than about 0.25, preferably less than 0.15, more preferably less than 0.1, and most preferred less than 0.05. The present invention also comprises a colored monolayer article having the described CDF, such as a film, thermoformed tray, or blow molded container, that has active oxygen scavenging properties. The colorant, after melt blending a base polymer, an oxidizable organic polymer, a transition metal catalyst, does not increase the binding energy of the transition metal catalyst ion by more than 1 eV.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: February 1, 2011
    Assignee: INVISTA North America S.a r.l.
    Inventor: Zhenguo Liu
  • Patent number: 7816436
    Abstract: Reheat characteristics of polyethylene and polypropylene resins, including reheating time and resin color, are improved by adding to the resin carbon black with a primary particle size in the range of 200 to 500 nm as an infrared absorber. Thermal carbon blacks having this primary particle size are preferred over Furnace carbon blacks. Injection stretch-blow molded bottles and other thermoformed products are made from resins with carbon black infrared absorber.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: October 19, 2010
    Assignee: Invista North America s.à.r.l.
    Inventors: David A. Harrison, J. Paul Davis
  • Patent number: 7651540
    Abstract: A method of producing a multicolored textured carpet comprises blending a polyamide polymer and a color pigment to form a melt blend, extrusion spinning the melt blend to form pigmented polyamide yarns, tufting (1) the pigmented polyamide yarns and (2) white dyeable polyamide yarns into a carpet, and overdyeing the carpet with an amount of acid dye sufficient to produce the multicolored textured carpet. The color pigment and the acid dye are selected to provide desired multicolored effect in the carpet. The multicolored textured carpet having deeper color and dye light fastness is also disclosed.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: January 26, 2010
    Assignee: INVISTA Technologies S.A.R.l.
    Inventor: Sundar Mohan Rao
  • Patent number: 7560566
    Abstract: A process for the production of a heteroaromatic carboxylic acid comprising contacting in the presence of a catalyst, a precursor of said carboxylic acid with an oxidant, such contact being effected with said precursor and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions close to the supercritical point.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: July 14, 2009
    Assignee: INVISTA North America S.a.r.l.
    Inventors: William Barry Thomas, Keith Whiston, Eduardo Cepeda Garcia-Verdugo, Martyn Poliakoff, Paul Anthony Hamley
  • Patent number: 7510751
    Abstract: Bottles, containers and other articles are formed from polypropylene compositions that include a reheating agent, such as antimony, carbon black, graphite, titanium, copper, manganese, iron, tungsten, graphite, infra-red absorbing dyes or other infra-red absorbing material. The reheating time for the polypropylene composition is shortened for injection stretch blow molding or thermoforming, and the polypropylene granule composition with reheating agent has an L* value of at least 80% of the L* value for a polypropylene granule control without added reheating agents as measured by the Gardner color test. The reheating agent may be incorporated into the polypropylene composition by in situ chemical reduction of a metal compound, such as antimony triglycolate, with a reducing agent, such as hypophosphorous acid. In addition, the polypropylene composition with reheating agent may be derived from a polypropylene masterbatch with high concentrations of reheating agent.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: March 31, 2009
    Assignee: INVISTA North America S.ar.l.
    Inventors: Michael Anthony Neal, David A. Harrison, Stephen Derek Jenkins, J. Paul Davis
  • Patent number: 7375042
    Abstract: The present invention relates to a woven polyester fabric for use in airbags. The present invention includes a woven fabric using a polyester filament yarn, wherein the polyester filament yarn has a tenacity of about 65 cN/tex or greater and an Instantaneous Thermal Creep (ITC) at 100° C. of about 0.5% or less. Additional embodiments of the present invention include an airbag made from the woven polyester fabric. Woven fabrics of the present invention can reduce the extent of seam combing during a hot module deployment of an airbag.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 20, 2008
    Assignee: INVISTA North America S.ar.l.
    Inventors: Thomas Edward Schmitt, Mach A. DeBenedictis
  • Patent number: 7294671
    Abstract: The present invention concerns a reactive carrier that forms no by-products during melt injection of polymer into articles such as sheets, films, fibers and containers. The reactive carrier is used to mix additives into the polymer resin. More particularly, the invention relates to the use of one or more cyclic anhydrides or substituted cyclic anhydrides as the reactive carrier. The polymer can be polyester or polyamide. Suitable cyclic anhydrides are those with a melt point of less than the polyester or polyamide, preferably less than about 160° C., and more preferably less than about 125° C. Most preferable are cyclic anhydrides with a melt point less than about 100° C. and especially suitable are those that are liquid at room temperature (25° C.).
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: November 13, 2007
    Assignee: Invista North America S.a.r.L.
    Inventors: Jayendra H. Bheda, Banks M. Moore, IV