Patents by Inventor Stephan Herman Wendel

Stephan Herman Wendel 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).

  • N,N,N'-Trimethyl-Bis-(Aminoethyl) Ether and its Derivatives as Catalysts for Polyurethanes
    Publication number: 20120149794
    Abstract: The present invention provides compounds produced by the reaction of glycidyl ethers and glycidyl esters with ether compounds including N,N,N?-trimethyl-bis-(aminoethyl)ether. N,N,N?-trimethyl-bis-(aminoethyl)ether and its derivatives can be used as polyurethane catalysts.
    Type: Application
    Filed: February 22, 2012
    Publication date: June 14, 2012
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Stephan Herman Wendel, John William Mitchell
  • N,N,N,?-trimethyl-bis-(aminoethyl) ether and its derivatives as catalysts for polyurethanes
    Patent number: 8143321
    Abstract: The present invention provides compounds produced by the reaction of glycidyl ethers and glycidyl esters with ether compounds including N,N,N?-trimethyl-bis-(aminoethyl) ether. N,N,N?-trimethyl-bis-(aminoethyl) ether and its derivatives can be used as polyurethane catalysts.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: March 27, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Stephan Herman Wendel, John William Mitchell
  • Aromatic diacid ester diols and substituted carbamates thereof for minimizing deterioration of polyurethane foams
    Patent number: 7666919
    Abstract: A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an aromatic diacid ester diol or substituted carbamate thereof. Foams prepared from the reaction of a polyol and an organic isocyanate in the presence of these ingredients show excellent resistance to deterioration of physical properties upon humid ageing.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: February 23, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Stephan Herman Wendel, Renee J. Keller
  • Ester alcohols and substituted carbamates thereof for minimizing deterioration of polyurethane foams
    Patent number: 7615580
    Abstract: A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an ester alcohol or substituted carbamate thereof. Foams prepared from the reaction of a polyol and an organic isocyanate in the presence of these ingredients show excellent resistance to deterioration of physical properties upon humid ageing.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 10, 2009
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Stephan Herman Wendel, Renée Jo Keller
  • N,N,N,'-trimethyl-bis-(aminoethyl) ether and its derivatives as catalysts for polyurethanes
    Publication number: 20080015273
    Abstract: The present invention provides compounds produced by the reaction of glycidyl ethers and glycidyl esters with ether compounds including N,N,N?-trimethyl-bis-(aminoethyl) ether. N,N,N?-trimethyl-bis-(aminoethyl) ether and its derivatives can be used as polyurethane catalysts.
    Type: Application
    Filed: July 13, 2006
    Publication date: January 17, 2008
    Inventors: Juan Jesus Burdeniuc, Stephan Herman Wendel, John William Mitchell
  • Catalyst blends for producing low thermal desorption polyurethane foams
    Patent number: 6858654
    Abstract: A catalyst composition for catalyzing a polyurethane forming reaction includes a gelling catalyst and a blowing catalyst selected such that the resulting polyurethane foam has a low level of volatile and/or malodorous material in it. The gelling catalysts are selected from tertiary aminoalkyl substituted primary or secondary amines; and the blowing catalysts are selected from bis(aminoalkyl) ethers comprising alkanol moieties, primary amine moieties, or ureido moieties derived from such primary amine moieties.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: February 22, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stephan Herman Wendel, Steven Paul Hulme, Mark Leo Listemann, Reza Fard-Aghai, Juan Jesus Burdeniuc
  • Acid-blocked amine catalysts for the production of polyurethanes
    Patent number: 6525107
    Abstract: Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes. The acid-blocked amine catalysts have the general structure shown below: wherein A is the residue of an organic acid anhydride; R1 is H or C1 to C6 alkyl; R2 is H or C1 to C6 alkyl; n is an integer of 0 to 10; and B is a compound containing a protonated amine and one or more primary amine, secondary amine, or tertiary amine groups.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: February 25, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stephan Herman Wendel, Reza Fard-Aghaie
  • Acid-blocked amine catalysts for the production of polyurethanes
    Publication number: 20030032553
    Abstract: Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes.
    Type: Application
    Filed: June 18, 2002
    Publication date: February 13, 2003
    Inventors: Stephan Herman Wendel, Reza Fard-Aghaie
  • Acid-blocked amine catalysts for the production of polyurethanes
    Patent number: 6432864
    Abstract: Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes. The acid-blocked amine catalysts have the general structure shown below: wherein A is the residue of an organic acid anhydride; R1 is H or C1 to C6 alkyl; R2 is H or C1 to C6 alkyl; n is an integer of 0 to 10; and B is a compound containing a protonated amine and one or more primary amine, secondary amine, or tertiary amine groups.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: August 13, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stephan Herman Wendel, Reza Fard-Aghaie
  • Silicone surfactants for the production of open cell polyurethane flexible foams
    Patent number: 6239186
    Abstract: A method for preparing a polyurethane flexible foam which comprises reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a cell opener, and a polydimethylsiloxane cell stabilizer composition which comprises at least 90 wt % of polydimethylsiloxane molecules having the formula: Me3Si(OSiMe2)nOSiMe3 where n is 5 to 7, provided at least 15 wt % of each of the three molecules in which n is 5, 6 and 7 is present.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 29, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Francis Mansfield, David Robert Battice, Allen Robert Arnold, Jr., Stephan Herman Wendel, John Herbert Frey