Patents by Inventor Frank Bongardt

Frank Bongardt 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).

  • Use of isopalmitic acid esters as lubricants for two-stroke engines
    Patent number: 5507964
    Abstract: The invention relates to the use of isopalmitic acid esters of branched aliphatic polyols containing 2 to 6 primary hydroxyl groups and 4 to 10 carbon atoms as a base oil for two-stroke engine lubricants. The isopalmitic acid esters are low in viscosity, even at low temperatures, and do not crystallize out in gasoline, even over periods of several days.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: April 16, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Frank Bongardt, Karl-Heinz Schmid, Reinhold Wuest
  • Base oils with a high viscosity index and improved low-temperature behavior
    Patent number: 5503762
    Abstract: A base oil with a high viscosity index and low pour point which is a mixture of a complex ester formed from aliphatic, cycloaliphatic or aromatic dicarboxylic acids, aliphatic polyols containing 2 to 6 hydroxyl groups and aliphatic monocarboxylic acids containing 6 to 22 carbon atoms and adipic acid esters of unbranched aliphatic monohydric alcohols.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: April 2, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Frank Bongardt, Nicole Windges
  • Engine base oils with improved seal compatibility
    Patent number: 5503760
    Abstract: A process is disclosed for producing motor base oils with an improved gasket compatibility. Also disclosed are motor oils containing carboxylic acid ester and ether as base oils.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: April 2, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Frank Bongardt, Karl-Heinz Schmid
  • Mixtures of esters of highly branched carboxylic acids
    Patent number: 5468406
    Abstract: Described are mixtures of esters of carboxylic acids branched at the 2 position and polyol mixtures comprising 60 to 99.9% by weight of branched saturated aliphatic polyols with 2 to 6 primary hydroxy groups and 4 to 10 C atoms and 0.1 to 40% by weight of unbranched saturated aliphatic diols with 2 to 12 C atoms. In spite of the branched chain, such acids can be esterified very rapidly, the resulting esters being suitable for use as lubricants.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: November 21, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl-Heinz Schmid, Frank Bongardt, Reinhold Wuest
  • Use of partially dehydrated castor oils as lubricants
    Patent number: 5468405
    Abstract: Partially dehydrated castor oils having hydroxyl numbers in a range between 90 and 150 mg of KOH/g are useful as lubricants.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: November 21, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Johann Klein, Frank Bongardt, Karl-Heinz Schmid
  • Environment-friendly basic oil for formulating hydraulic fluids
    Patent number: 5451334
    Abstract: An environment-friendly basic oil based on natural materials for the formulation of hydraulic oils having improved viscosity at elevated temperature and lower pour point contains rapeseed oil or soybean oil as the main component, an antioxidant selected from methoxyphenol, ethoxyphenol, butyl hydroxyanisole, butyl hydroxytoluene, methoxyhydroquinone, ethoxyhydroquinone, tertiary butyl hydroquinone, and tocopherol, and an ester of a monocarboxylic acid or a fatty acid.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: September 19, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Frank Bongardt, Karl Schmid, Reinhold Wuest
  • Mixtures of fatty alkyl lower alkyl esters having improved low-temperature stability
    Patent number: 5389113
    Abstract: Mixtures containinga) 58 to 95% by weight of at least one ester with an iodine value of 50 to 150 derived from fatty acids containing 12 to 22 carbon atoms and lower aliphatic alcohols containing 1 to 4 carbon atoms,b) 4 to 40% by weight of at least one ester of fatty acids containing 6 to 14 carbon atoms and lower aliphatic alcohols containing 1 to 4 carbon atoms andc) 0.1 to 2% by weight of at least one polymeric ester, are distinguished by particular low-temperature stability and can be used as a fuel for diesel engines.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: February 14, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Guenther Demmering, Karl Schmid, Frank Bongardt, Leonhard Wittich
  • Guerbet carbonates
    Patent number: 5387374
    Abstract: Guerbet carbonates corresponding to formula (I) ##STR1## in which R.sup.1 is a branched alkyl radical containing 12 to 44 carbon atoms and R.sup.2 has the same meaning as R.sup.1 or is a linear alkyl radical containing 1 to 12 carbon atoms; their use as lubricants; and a process for their preparation in which Guerbet alcohols are used to transesterify dialkyl carbonates of formula III ##STR2## in which R.sup.3 is a linear alkyl radical containing 1 to 12 carbon atoms.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: February 7, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Alfred Westfechtel, Frank Bongardt, Achim Ansmann
  • Universal lubricant based on a synthetic oil solution
    Patent number: 5360560
    Abstract: A water-soluble, foam-inhibiting universal lubricant composition based on an aqueous self-emulsifying synthetic oil solution and an anti-foaming agent. The oil is an ethoxylated dimeric fatty acid, and the anti-foaming agent is made up of a Guerbet alcohol and a metal soap.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: November 1, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl Schmid, Frank Bongardt, Juergen Roeder, Reinhold Wuest
  • Base oil for the lubricant industry
    Patent number: 5286397
    Abstract: A low-viscosity lubricant composition stable to high and low temperatures containing an ester oil which is the esterfication product of an aliphatic dicarboxylic acid having 8 or 9 carbon atoms and a branched Guerbet alcohol having from 12 to 20 carbon atoms.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: February 15, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl Schmid, Frank Bongardt, Reinhold Wuest