Patents by Inventor Kerstin Schrinner

Kerstin Schrinner 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).

  • POLYETHER POLYOLS, POLYESTER POLYOLS AND POLYURETHANES OF LOW RESIDUAL ALDEHYDE CONTENT
    Publication number: 20110054220
    Abstract: The present invention describes a process for preventing the formation of aldehydic contaminants in polyether polyols, polyester polyols or polyurethanes which comprises incorporating into said polyether polyols, polyester polyols or polyurethanes an effective amount of a) a phenolic antioxidant and b) one or more compounds selected from (i) aminic antioxidants, (ii) benzofuran-2-ones, (iii) phosphites or phosphonites and (iv) mixtures thereof.
    Type: Application
    Filed: November 4, 2010
    Publication date: March 3, 2011
    Inventors: CHIN SIONG GOH, Kerstin Schrinner, Pascal Xanthopoulos
  • Polyether polyols, polyester polyols and polyurethanes of low residual aldehyde content
    Patent number: 7879928
    Abstract: The present invention describes a process for preventing the formation of aldehydic contaminants in polyether polyols, polyester polyols or polyurethanes which comprises incorporating into said polyether polyols, polyester polyols or polyurethanes an effective amount of a) a phenolic antioxidant, b) one or more compounds selected from (i) aminic antioxidants, (ii) benzofuran-2-ones, and (iii) phosphites or phosphonites, or (iv) mixtures thereof.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: February 1, 2011
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Chin Siong Goh, Kerstin Schrinner, Pascal Xanthopoulos
  • Polyether polyols, polyester polyols and polyurethanes of low residual aldehyde content
    Publication number: 20090182078
    Abstract: The present invention describes a process for preventing the formation of aldehydic contaminants in polyether polyols, polyester polyols or polyurethanes which comprises incorporating into said polyether polyols, polyester polyols or polyurethanes an effective amount of a) a phenolic antioxidant, b) one or more compounds selected from (i) aminic antioxidants, (ii) benzofuran-2-ones, and (iii) phosphites or phosphonites, or (iv) mixtures thereof.
    Type: Application
    Filed: April 11, 2006
    Publication date: July 16, 2009
    Inventors: Chin Siong Goh, Kerstin Schrinner, Pascal Xanthopoulos
  • Stabilization of polyether polyols, polyester polyols and polyurethanes
    Publication number: 20070185250
    Abstract: Polyether polyols, polyester polyols or polyurethanes which possess outstanding stability to oxidative, thermal or light-induced degradation and which possess a reduced fogging contribution of the polymers comprise at least a liquid compound of the formula (I) wherein R1 is C1-C4alkyl, R2 is a branched C12-C25alkyl, and X is C1-C8alkylene or C1-C4alkyl substituted C2-C8alkylene.
    Type: Application
    Filed: November 24, 2004
    Publication date: August 9, 2007
    Applicant: CIBA SPECIALTY CHEMICALS HOLDING INC.
    Inventors: Dietmar Mäder, Kerstin Schrinner, Pascal Xanthopoulos
  • Stabilization of synthetic polymers
    Patent number: 6881774
    Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I wherein R1 and R2 are each independently of one another hydrogen or C1-C8alkyl, R3 and R4 are each independently of one another C1-C12alkyl, and R5 is C1-C7alkyl.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: April 19, 2005
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Kerstin Schrinner, Pascal Xanthopoulos
  • Stabilization of synthetic polymers
    Publication number: 20030109611
    Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I 1
    Type: Application
    Filed: September 9, 2002
    Publication date: June 12, 2003
    Inventors: Kerstin Schrinner, Pascal Xanthopoulos