Patents by Inventor William DEWaal

William DEWaal 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: 4140492
    Abstract: Borated derivatives of C.sub.8 to C.sub.40 hydrocarbyl substituted Mannich bases such as those derived from the condensation reaction of a C.sub.8 -C.sub.40 alkyl substituted hydroxy aromatic compound (said alkyl preferably having a linear chain of 16 to 22 carbons), an aldehyde and a mono (C.sub.2 -C.sub.3 alkanol) amine, preferably wherein the molar ratios of said aromatic to said aldehyde to said amine is about 1 to 0.9-1.4 to 0.9-1.4, respectively, are useful in combination with a coadditive hydrocarbon such as an amorphous hydrocarbon or a hydrogenated polybutadiene in improving the cold flow properties of distillate hydrocarbon oils.
    Type: Grant
    Filed: September 26, 1977
    Date of Patent: February 20, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventors: Nicholas Feldman, William H. Stover, William DEWaal
  • Patent number: 3992452
    Abstract: Alkoxy phenols such as o-methoxyphenol (guaiacol) and o-ethoxyphenol are prepared from substituted cycloaliphatic ketones by dehydrogenation thereof in the presence of a Group VIII noble metal catalyst, preferably palladium supported on carbon, at a temperature of 150.degree. to 250.degree. C. The reaction is carried out neat or in the liquid phase using an alicyclic ester reaction solvent having a boiling point ranging from about 150.degree. to 250.degree. C. The substituted cycloaliphatic ketone reactant, such as 2-chlorocyclohexanone is prepared by chlorination of cyclohexanone with subsequent conversion of the 2-chlorocyclohexanone to the alkoxy-cyclohexanone compound which is dehydrogenated.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: November 16, 1976
    Assignee: CPC International Inc.
    Inventors: Allan B. McKague, William DEWaal, Carl E. Van Winckel
  • Patent number: RE29200
    Abstract: Alkoxy phenols such as o-methoxyphenol (guaiacol) and o-ethoxyphenol are prepared from substituted cycloaliphatic ketones by dehydrogenation thereof in the presence of a Group VIII noble metal catalyst, preferably palladium supported on carbon, at a temperature of 150.degree. C., to 250.degree. C. The reaction is carried out neat or in the liquid phase using an alicyclic ester reaction solvent having a boiling point ranging from about 150.degree. C., to 250.degree. C. The substituted cycloaliphatic ketone reactant, such as 2-chlorocyclohexanone is prepared by chlorination of cyclohexanone with subsequent conversion of the 2-chlorocyclohexanone to the alkoxy-cyclohexanone compound which is dehydrogenated.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: May 3, 1977
    Assignee: CPC International Inc.
    Inventors: Allan B. McKague, William DEWaal
  • Patent number: RE29201
    Abstract: Alkoxy phenols such as o-methoxyphenol (guaiacol) and o-ethoxyphenol are prepared from substituted cycloaliphatic ketones by dehydrogenation thereof in the presence of a Group VIII noble metal catalyst, preferably palladium supported on carbon, at a temperature of 150.degree. C., to 250.degree. C. The reaction is carried out neat or in the liquid phase using an alicyclic ester reaction solvent having a boiling point ranging from about 150.degree. C., to 250.degree. C. The substituted cycloaliphatic ketone reactant, such as 2-chlorocyclohexanone is prepared by chlorination of cyclohexanone with subsequent conversion of the 2-chlorocyclohexanone to the alkoxy-cyclohexanone compound which is dehydrogenated.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: May 3, 1977
    Assignee: CPC International Inc.
    Inventors: Allan B. McKague, William DEWaal, Carl E. Van Winckel