Patents by Inventor Thomas Joseph Bohnert

Thomas Joseph Bohnert 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).

  • Plastisol compositions comprising vinyl chloride polymers and mixtures of aromatic and aliphatic esters of diols as plasticizers
    Patent number: 6933337
    Abstract: Mixtures of esters produced by reacting a mixture of aromatic and aliphatic monocarboxylic acids with a diol containing from 2 to 12 carbon atoms are effective plasticizers for plastisols containing dispersion grade polymers of vinyl chloride. The freezing point of the present ester mixtures and their efficacy as plasticizers can be varied by adjusting the type and relative concentration of the aliphatic acid used to prepare the plasticizer. The ester mixtures can also be used as plasticizers for other organic polymers.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: August 23, 2005
    Inventors: Jiamin Lang, Bruce Edward Stanhope, Thomas Joseph Bohnert, William David Arendt
  • Plastisol compositions comprising vinyl chloride polymers and mixtures of aromatic and aliphatic esters of diols as plasticizers
    Publication number: 20030181556
    Abstract: Mixtures of esters produced by reacting a mixture of aromatic and aliphatic monocarboxylic acids with a diol containing from 2 to 12 carbon atoms are effective plasticizers for plastisols containing dispersion grade polymers of vinyl chloride. The freezing point of the present ester mixtures and their efficacy as plasticizers can be varied by adjusting the type and relative concentration of the aliphatic acid used to prepare the plasticizer. The ester mixtures can also be used as plasticizers for other organic polymers.
    Type: Application
    Filed: March 20, 2003
    Publication date: September 25, 2003
    Inventors: Jiamin Lang, Bruce Edward Stanhope, Thomas Joseph Bohnert, William David Arendt
  • Benzoate/alkanoate ester compositions
    Publication number: 20030023112
    Abstract: Mixtures of esters produced by reacting an aromatic and an aliphatic monocarboxylic acid with a stoichiometric quantity of a diol are effective plasticizers for polyvinyl chloride and other rigid organic polymers. The freezing point of the mixtures and the efficacy of the present ester mixtures as plasticizers can be varied by adjusting the type and molar ratio of the two types of acids used to prepare the ester mixture.
    Type: Application
    Filed: April 11, 2001
    Publication date: January 30, 2003
    Inventors: Jiamin Lang, Bruce Edward Stanhope, Thomas Joseph Bohnert, William David Arendt
  • Liquid glycol benzoate compositions and polymer compositions containing same
    Patent number: 6184278
    Abstract: The present invention relates to organic polymer compositions, containing liquid ester compositions as plastisizers, said compositions comprising mixtures of esters derived from (a) diethylene glycol and triethylene glycol and (b) benzoic or toluic acid, wherein the freezing point of the ester mixture is below the freezing points of the constituent esters when the relative concentrations of the constituent esters are within specified limits.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: February 6, 2001
    Assignee: Velsicol Chemical Corporation
    Inventors: William David Arendt, Thomas Joseph Bohnert, Mark Stephen Holt
  • Liquid glycol benzoate compositions
    Patent number: 5990214
    Abstract: The present invention relates to liquid compositions comprising mixtures of esters derived from a) diethylene glycol and triethylene glycol and b) benzoic or toluic acid. The freezing point of the ester mixture is below the freezing points of the constituent esters when the relative concentrations of the constituent esters are within specified limits. The invention also relates oils and lubricants containing the present liquid ester compositions as plasticizing additives.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: November 23, 1999
    Assignee: Velsicol Chemical Corporation
    Inventors: William David Arendt, Thomas Joseph Bohnert, Mark Stephen Holt