Patents by Inventor Thomas F. Smolka

Thomas F. Smolka 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 producing benzyl derivitives of 2-butene-1,4 diols
    Publication number: 20020055654
    Abstract: A method for producing benzyl derivatives of 2-butene-1,4-diols by reacting 2-butene-1,4-diols with benzyl chloride compounds in the presence of an alkali or alkaline earth metal hydroxide or carbonate to produce benzyl derivatives of 2-butene-1,4-diols and recovering at least a portion of at least one such benzene derivative.
    Type: Application
    Filed: September 10, 2001
    Publication date: May 9, 2002
    Inventors: Qi Wang, Ramesh Krishnamurti, Thomas F. Smolka
  • Inhibiting discoloration of halogen-containing polymers after radiation
    Publication number: 20010036983
    Abstract: Disclosed is a method of inhibiting the discoloration of a halogen-containing polymer, particularly poly(vinyl chloride), after exposure to gamma radiation. About 0.0001 to about 5 wt % of a dithiocarbamate or a dithiophosphate stabilizer is added to the polymer. The stabilizer can be added during polymerization or during compounding. Also disclosed is a composition of a halogen-containing polymer and a dithiocarbamate or dithiophosphate stabilizer.
    Type: Application
    Filed: June 11, 2001
    Publication date: November 1, 2001
    Applicant: Occidental Chemical Corporation.
    Inventors: Qi Wang, Sandor Nagy, Mary K. Cocoman, Thomas F. Smolka, Mingzhu Xu
  • Photo-polymerization of vinyl chloride using metallocene catalysts
    Patent number: 6025407
    Abstract: Disclosed is a process for polymerizing vinyl chloride monomer in the presence of light. A mixture is formed of liquid vinyl chloride monomer, preferably about 10 to about 250 ppm of a metallocene catalyst, about 1 to about 2000 moles of an aluminum-containing cocatalyst per mole of catalyst, and up to about 500 moles of a Lewis base per mole of aluminum in the cocatalyst. Selected alkyl groups from the aluminum-containing cocatalyst can be placed on the ends of the poly (vinyl chloride) chains.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: February 15, 2000
    Assignee: Occidental Chemical Corporation
    Inventors: Sandor M. Nagy, Ramesh Krishnamurti, Mary K. Cocoman, Walter M. Opalinski, Thomas F. Smolka
  • Reducing scale in vinyl polymerizations
    Patent number: 6001937
    Abstract: Disclosed is a method of inhibiting the formation of scale on reactor surfaces in contact with a polymerizing vinyl monomer. The reactor surfaces are contacted with a composition that contains, as a scale reducing agent, an acidic hydrazone condensate or a salt thereof. The scale reducing agent can be added to the polymerizing monomer or it can be placed in a composition containing a surfactant and an inorganic binder and the composition can be applied to the reactor surfaces or added to the monomer.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: December 14, 1999
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor M. Nagy, Habib Hichri, Thomas F. Smolka
  • Benzothioxepanone and benzothioxepane thione compounds
    Patent number: 5817835
    Abstract: Novel benzothioxepanone and benzothioxepane thione compounds are characterized by the formula ##STR1## wherein Z is: ##STR2## R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl, or C.sub.1 to C.sub.8 alkoxy; X and Y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring, with the proviso that when Z is ?1!, X and Y represent a fused cyclopentyl or cyclohexyl ring; and n is 0, 1, or 2. The compounds are useful as co-catalysts in the para-directed nuclear chlorination of toluene.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: October 6, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka
  • Process for the preparation of chloro-alkylbenzenes and novel cocatalysts therefor
    Patent number: 5714603
    Abstract: A process for the pare-directed nuclear chlorination of an alkylbenzene, such as toluene, comprises reacting the alkylbenzene with chlorine in the presence of a Lewis acid catalyst and a novel co-catalyst of the formula: ##STR1## where Z is ##STR2## and R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl to C.sub.1 to C.sub.8 alkoxy; x and y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring; n is 0, 1 or 2, with the proviso that when Z is ?3!, n is 0 or 1.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: February 3, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka
  • Process for the preparation of chloro-alkylbenzenes and novel cocatalysts therefor
    Patent number: 5621153
    Abstract: A process for the para-directed nuclear chlorination of an alkylbenzene, such as toluene, comprises reacting the alkylbenzene with chlorine in the presence of a Lewis acid catalyst and a novel co-catalyst of the formula: ##STR1## where Z is ##STR2## ; and R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl to C.sub.1 to C.sub.8 alkoxy; x and y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring; n is 0, 1 or 2, with the proviso that when Z is [3], n is 0 or 1.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: April 15, 1997
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka