Patents by Inventor François Gugumus

François Gugumus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7884147
    Abstract: A synergistic stabilizer mixture comprising a component a) and, for example, a component b), where component a) is at least one compound of the formula I in which R1 is hydrogen or methyl, R2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; component b) is at least one compound of the formulae IIa and IIb in which n2 and n2* are a number from 2 to 50.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: February 8, 2011
    Assignee: BASF SE
    Inventor: François Gugumus
  • Patent number: 7820744
    Abstract: A stabilizer mixture containing the components (A) and (B) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II); with the proviso that components (A) and (B) are different.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: October 26, 2010
    Assignee: Ciba Specialty Chemicals Corp.
    Inventor: François Gugumus
  • Publication number: 20100178484
    Abstract: The novel transparent polyolefin or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: March 29, 2010
    Publication date: July 15, 2010
    Inventors: DAVID GEORGE LEPPARD, FRANCOIS GUGUMUS, MICHELA BONORA
  • Publication number: 20100048774
    Abstract: A stabilizer mixture containing the components (A) and (B) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II); with the proviso that components (A) and (B) are different.
    Type: Application
    Filed: October 28, 2009
    Publication date: February 25, 2010
    Inventor: François GUGUMUS
  • Patent number: 7652081
    Abstract: A stabilizer mixture containing (I) one low molecular weight alkylated sterically hindered amine compound; and (II) one high molecular weight alkylated sterically hindered amine compound.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: January 26, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: François Gugumus
  • Publication number: 20090312464
    Abstract: A stabilizer mixture containing (A) for example a compound of the formula (A-I) wherein R1 is hydrogen or C1-C4alkyl, R2 is a direct bond or C1-C1-C10alkylene and n1 is a number from 2 to 50; (B) a sterically hindered amine compound; and (C) anatase; with the proviso that the component (B) is different from a compound of the formula (A-I).
    Type: Application
    Filed: January 26, 2009
    Publication date: December 17, 2009
    Inventor: Francois Gugumus
  • Patent number: 7628936
    Abstract: A stabilizer mixture containing the components (A), (B) and (C) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; component (B) is a low molecular weight sterically hindered amine compound containing a group of the formula (I) or (II); and component (C) is a high molecular weight sterically hindered amine compound containing a group of the formula (I); with the proviso that components (A), (B) and (C) are different.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: December 8, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: François Gugumus
  • Publication number: 20090291289
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: July 29, 2009
    Publication date: November 26, 2009
    Inventors: DAVID GEORGE LEPPARD, François Gugumus, Michela Bonora
  • Patent number: 7595008
    Abstract: A stabilizer mixture containing the components (I), (II) and (III) wherein component (I) is for example a compound of the formula (B-1-b) wherein E1 is hydrogen; component (II) is for example a compound of the formula (B-0-a) wherein E1* is hydrogen; and component (III) is for example a compound of the formula (C-1-a) wherein b1 is a number from 2 to 20 and R6 is hydrogen; is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: September 29, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: François Gugumus
  • Publication number: 20090105379
    Abstract: A stabilizer mixture containing the components (A) and (B) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II); with the proviso that components (A) and (B) are different.
    Type: Application
    Filed: December 18, 2008
    Publication date: April 23, 2009
    Inventor: Francois Gugumus
  • Publication number: 20090093572
    Abstract: A stabilizer mixture containing (I) two different sterically hindered amine compounds, and (II) at least one compound selected from the group consisting of an organic salt of Zn, an inorganic salt of Zn, Zn oxide, Zn hydroxide, an organic salt of Mg, an inorganic salt of Mg, Mg oxide and Mg hydroxide.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 9, 2009
    Inventor: Francois Gugumus
  • Publication number: 20090042006
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and aggressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: September 12, 2008
    Publication date: February 12, 2009
    Inventors: David George Leppard, Francois Gugumus, Michela Bonora
  • Publication number: 20070259165
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and aggressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: July 11, 2007
    Publication date: November 8, 2007
    Inventors: David Leppard, Francois Gugumus, Michela Bonora
  • Patent number: 7265171
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: September 4, 2007
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: David George Leppard, François Gugumus, Michela Bonora
  • Patent number: 7169835
    Abstract: A stabilizer mixture containing (A) a sterically hindered amine compound, and (B) two different compounds selected from the group consisting of an organic salt of Zn, an inorganic salt of Zn, an organic salt of Mg and an inorganic salt of Mg; the weight ratio of the two different compounds being 1:10 to 10:1; with the provisos that (1) the stabilizer mixture is essentially free of perchloric acid, and (2) the two compounds in component (B) are different from the combination ZnO and Zn stearate and the combination ZnO and hydrotalcite; is useful for stabilizing an organic material, in particular a polyolefin, against degradation induced by light, heat or oxidation.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: January 30, 2007
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: François Gugumus
  • Patent number: 7166653
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005–0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: January 23, 2007
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: David George Leppard, François Gugumus, Michela Bonora
  • Publication number: 20060270764
    Abstract: A stabilizer mixture containing the components (A) and (B) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II); with the proviso that components (A) and (B) are different.
    Type: Application
    Filed: August 3, 2006
    Publication date: November 30, 2006
    Inventor: Francois Gugumus
  • Publication number: 20060270763
    Abstract: A stabilizer mixture containing (I) one low molecular weight alkylated sterically hindered amine compound; and (II) one high molecular weight alkylated sterically hindered amine compound.
    Type: Application
    Filed: August 3, 2006
    Publication date: November 30, 2006
    Inventor: Francois Gugumus
  • Publication number: 20060226394
    Abstract: A stabilizer mixture containing the components (A), (B) and (C) wherein component (A) is for example a compound of the formula (A-1) wherein A, is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; component (B) is a low molecular weight sterically hindered amine compound containing a group of the formula (I) or (II); and component (C) is a high molecular weight sterically hindered amine compound containing a group of the formula (I); with the proviso that components (A), (B) and (C) are different.
    Type: Application
    Filed: June 13, 2006
    Publication date: October 12, 2006
    Inventor: Francois Gugumus
  • Publication number: 20060141207
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: February 22, 2006
    Publication date: June 29, 2006
    Inventors: David Leppard, Francois Gugumus, Michela Bonora