Patents by Inventor Walter C. Frank

Walter C. Frank 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: 4877912
    Abstract: A process is disclosed for the production of 1,1,3,4,4,6-Hexamethyl-1,2,3,4-Tetrahydronaphthalene comprising reacting para-cymene with an olefinic compound selected from the group consisting of 2,3-dimethyl-1-butene and neohexene, in the presence of a reagent of the formula ##STR1## and further in the presence of an aluminum halide and I.sub.2, wherein in the above formula, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, independently, are H or a C.sub.1 -C.sub.3 straight chain, or branched alkyl, provided that no more than one of R.sup.1, R.sup.2 and R.sup.3 are H, and no more than one of R.sup.4, R.sup.5 and R.sup.6 are H.The subject process produces the desired compound in a surprisingly high yield, with a surprisingly high selectivity, and at a relatively high rate of reaction, using better, more convenient and/or less expensive process methodology than many processes known heretofore.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: October 31, 1989
    Assignee: Union Camp Corporation
    Inventor: Walter C. Frank
  • Patent number: 4877915
    Abstract: A process is disclosed for the production of polyalkyl tetrahydronaphthalenes wherein a cyclialkylation reaction between an olefinic compound of the general formula ##STR1## wherein R.sup.4, R.sup.5, and R.sup.6 are substituents which do not interfere with a Friedel-Crafts-type reaction and R.sup.5 and R.sup.6 are other than H, and a substituted benzene compound is carried out in the presence of a hydride abstracting reagent, a Lewis acid, and, optionally, a phase transfer agent. In some embodiments, the subject process is specifically carried out in the absence of elemental iodine. The subject process produces the desired compounds in a surprisingly high yield, with a surprisingly high selectivity to the desired product, and at a relatively high rate of reaction, using better, more convenient or less expensive process methodology than many processes known heretofore.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: October 31, 1989
    Assignee: Union Camp Corporation
    Inventor: Walter C. Frank
  • Patent number: 4877913
    Abstract: A process is disclosed for the production of polyalkyl tetrahydronaphthalenes wherein a cyclialkylation reaction between an olefinic compound of the general formula ##STR1## and a substituted benzene compound is carried out in the presence of a hydride abstracting reagent, a Lewis acid, and, optionally, a phase transfer agent. In some embodiments, the subject process is specifically carried out in the absence of elemental iodine. The subject process, which may be practiced in an unhalogenated hydrocarbon solvent, produces the desired compounds in a surprisingly high yield, with a surprisingly high selectivity to the desired product, and at a relatively high rate of reaction, using better, more convenient or less expensive process methodology than many processes known heretofore.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: October 31, 1989
    Assignee: Union Camp Corporation
    Inventor: Walter C. Frank
  • Patent number: 4877910
    Abstract: A process is disclosed for the production of polyalkyl tetrahydronaphthalenes is disclosed wherein a cyclialkylation reaction between an olefinic compound of the general Formula ##STR1## wherein R.sup.4, R.sup.5, and R.sup.6 are independently defined and each represents a substituent which does not substantially interfere with a Friedel-Crafts type reaction and where R.sup.5 and R.sup.6 are other than H, and a substituted benzene compound is carried out in the presence of a hydride abstracting reagent, an alkyl halide or hydrogen halide, a Lewis acid, and, optionally, a phase transfer agent. In some embodiments, the subject process is specifically carried out in the absence of elemental iodine. The subject process produces the desired compounds in a surprisingly high yield, with a surprisingly high selectivity to the desired product, and at a relatively high rate of reaction, using better, more convenient, or less expensive process methodology than many processes known heretofore.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: October 31, 1989
    Assignee: Union Camp Corporation
    Inventor: Walter C. Frank
  • Patent number: 4699660
    Abstract: Stabilized, aqueous dispersions of humate-surfactant are disclosed as inks.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: October 13, 1987
    Assignee: Union Camp Corporation
    Inventors: Walter C. Frank, James C. West
  • Patent number: 4663488
    Abstract: The disclosure is of an improved process for the Oppenauer oxidation of geraniol/nerol to obtain citral. The improvement comprises the use of selected tertiary aldehydes as hydrogen acceptors.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: May 5, 1987
    Assignee: Union Camp Corporation
    Inventors: George A. Locko, Walter C. Frank