Patents by Inventor Gordon G. Knapp

Gordon G. Knapp 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).

  • Method for DMTDA production
    Patent number: 5302755
    Abstract: Thioalkylated aromatic amines are prepared by reacting a mixture of an aromatic amine, an organic disulfide and a Lewis acid or organometallic catalyst to form a product mixture and adding to said product mixture a poly(oxyalkylene)polymer or by reacting a mixture of an aromatic amine, an organic disulfide and a Lewis acid or organometallic catalyst in the presence of a poly(oxyalkylene)polymer for the purpose of easy handling of the catalyst residue for recycling.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: April 12, 1994
    Assignee: Ethyl Corporation
    Inventors: Robert A. Schaerfl, Jr., Gordon G. Knapp, W. Dirk Klobucar
  • Process for preparing N,N-diarylthioureas and arylisothiocyanates
    Patent number: 5250717
    Abstract: Isothiocyanates of the formula ##STR1## where R, R.sub.1, and R.sub.2 are the same or different and are hydrogen or C.sub.1 to C.sub.6 linear or branched alkyl and thioureas of the formula ##STR2## where R, R.sub.1, and R.sub.2 are defined above, are disclosed. Processes for their preparation are also disclosed.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: October 5, 1993
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Secondary diamines
    Patent number: 5041668
    Abstract: Aromatic diamines having one or two benzene rings, two ar-N-methylamino substituents, and ar-alkyl substituents in all positions ortho to the amino substituents are novel compounds which can be used in the preparation of polyurethanes, polyureas, polyurethane-urea polymers, and epoxy resins.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: August 20, 1991
    Assignee: Ethyl Corporation
    Inventors: Christopher J. Nalepa, J. Kenneth Presswood, Gordon G. Knapp
  • Process for preparing (hydrocarbylthio) aromatic amines
    Patent number: 5015770
    Abstract: (Hydrocarbylthio)aromatic amines are prepared by reacting an aromatic amine, such as an aminobenzene, with a hydrocarbyl disulfide, such as an alkyl disulfide, in the presence of iodine, iodine monochloride, or iodine monobromide as a catalyst.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: May 14, 1991
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Aromatic diimines
    Patent number: 5008453
    Abstract: Aromatic diimines having one or two benzene rings, two ar-imino substituents corresponding to the formula --N.dbd.CH.sub.2, and ar-alkyl substituents in all positions ortho to the imino substituents are novel compounds which can be used in the preparation of polyurethanes, polyureas, polyurethane-urea polymers, and epoxy resins.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: April 16, 1991
    Assignee: Ethyl Corporation
    Inventors: Christopher J. Nalepa, J. Kenneth Presswood, Gordon G. Knapp
  • Haze-free boronated antioxidant
    Patent number: 4927553
    Abstract: An additive composition of boronated phenolic antioxidant and anti-haze diol capable of complexing with boric acid as well as organic material protected by the additive composition. A hydrolytically stable additive composition comprising a boronated phenolic antioxidant and a diol member capable of reacting with boric acid formed as a hydrolysis product to form a stable ring structure soluble in a substrate. The additive composition prevents or cures a haze caused by hydrolysis.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: May 22, 1990
    Assignee: Ethyl Corporation
    Inventors: William E. Wright, Bryan T. Davis, Donald S. Matteson, Gordon G. Knapp
  • Epoxy resin compositions containing poly-(hydrocarbylthio)aromatic diamines
    Patent number: 4757119
    Abstract: Novel compositions suitable for use in preparing prepregs comprise an epoxy resin and a poly(hydrocarbylthio)aromatic diamine curing agent, preferably a substituted di(alkylthio)-diaminobenzene wherein the alkylthio groups contain 1-10 carbons.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: July 12, 1988
    Assignee: Ethyl Corporation
    Inventors: Paul L. Wiggins, Gordon G. Knapp
  • Corrosion inhibitors for alcohol containing fuels
    Patent number: 4549882
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) at least one monoalkenylsuccinic acid wherein the alkenyl group contains about 8 to 30 carbon atoms and (B) an N-(2-hydroxyalkyl)monoalkanolamine or an N-(2-hydroxyalkyl)dialkanolamine.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: October 29, 1985
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Fuel compositions
    Patent number: 4549885
    Abstract: Coking in and around the injector nozzles of indirect injection compression ignition engines is reduced by means of distillate fuel with which has been blended suitable concentrations of:(a) organic nitrate ignition accelerator, and(b) an N-(2-hydroxyalkyl)monoalkanolamine or an N-(2-hydroxyalkyl)dialkanolamine.Also described are additive mixtures of (a) and (b) for use in distillate fuels in amounts sufficient to reduce the coking tendencies of such fuels when used in the operation of indirect injection compression ignition engines.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: October 29, 1985
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Alcohol and gasohol fuels having corrosion inhibiting properties
    Patent number: 4531948
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) at least one monoalkenylsuccinic acid wherein the alkenyl group contains about 8 to 30 carbon atoms and (B) a polyisobutenyl succinimide of an alkylenepolyamine.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: July 30, 1985
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Corrosion inhibitors for alcohol containing motor fuel
    Patent number: 4511367
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) at least one monoalkenylsuccinic acid wherein the alkenyl group contains about 8 to 30 carbon atoms and (B) a substituted imidazoline, e.g., 2-heptadecenyl-1-(2-hydroxyethyl)imidazoline.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: April 16, 1985
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Corrosion inhibitors for alcohol-based fuels
    Patent number: 4511368
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) a polymer of one or more C.sub.16 to C.sub.18 polyunsaturated aliphatic monocarboxylic acid (e.g. linoleic dimer and/or trimer) and (B) a substituted imidazoline, e.g., 2-heptadecenyl-1-(2-hydroxyethyl)imidazoline.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: April 16, 1985
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Corrosion inhibitor for alcohol and gasohol fuels
    Patent number: 4509951
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) a polymer of one or more C.sub.16 to C.sub.18 polyunsaturated aliphatic monocarboxylic acid (e.g., linoleic dimer and/or trimer) and (B) a polyisobutenyl succinimide of an alkylenepolyamine.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: April 9, 1985
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Nitration process
    Patent number: 4479905
    Abstract: A mixture of aliphatic primary monohydric alcohol and alkoxyalkanol is continuously nitrated by reaction with a nitric-sulfuric acid mixture at -10.degree. to 15.degree. C. to yield an organic nitrate mixture containing substantial amounts of alkoxyalkyl nitrate useful as a cetane improver in diesel fuel.
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: October 30, 1984
    Assignee: Ethyl Corporation
    Inventors: Gordon G. Knapp, Marguerite S. Baylerian, Paul D. Seemuth
  • Two stage hydrogenolysis of carbohydrate to glycols using sulfide modified ruthenium catalyst in second stage
    Patent number: 4476331
    Abstract: A process for the production of a lower polyhydric alcohol or a mixture thereof by the hydrogenation and hydrolysis of a carbohydrate. The first stage hydrogenation produces higher polyhydric alcohols, such as sorbitol. In the second stage these higher polyhydric alcohols are selectively converted under the appropriate reaction conditions to lower polyhydric alcohols, such as ethylene glycol and 1,2-propylene glycol, using a sulfide-modified ruthenium catalyst.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: October 9, 1984
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Gordon G. Knapp
  • Sulfide-modified ruthenium catalyst
    Patent number: 4430253
    Abstract: A process for the production of a lower polyhydric alcohol or a mixture thereof by the hydrogenation and hydrolysis of a carbohydrate. The first stage hydrogenation produces higher polyhydric alcohols, such as sorbitol. In the second stage these higher polyhydric alcohols are selectively converted under the appropriate reaction conditions to lower polyhydric alcohols, such as ethylene glycol and 1,2-propylene glycol, using a sulfide-modified ruthenium catalyst.
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: February 7, 1984
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Gordon G. Knapp
  • Metal extraction from sea nodules
    Patent number: 4066733
    Abstract: A process is disclosed for extracting nickel, copper, cobalt and molybdenum from a complex ore containing copper, nickel, cobalt, molybdenum, manganese and iron. The process features treatment of the ore with gaseous compound followed by leaching with an aqueous ammonia/ammonium salt solution into which is additionally introduced sulfite.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: January 3, 1978
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Gordon G. Knapp
  • Conversion of acetals
    Patent number: 4062898
    Abstract: Acetals can be transformed into useful products by reaction with carbon monoxide and hydrogen. For example, methylal can be converted to ethanol and .beta.-methoxyethanol. The reaction can be conducted in the presence of a catalyst system comprising cobalt, iodine and ruthenium.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: December 13, 1977
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Gordon G. Knapp