Patents by Inventor Jozef Pinter

Jozef Pinter 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).

  • Process of production of n-alkyl-2-benzthiazolysulfeneimides, device for their production and method of their purification
    Patent number: 7291741
    Abstract: The solution concerns a process of production of N-alkyl-2-benzthiazolylsulfeneimides by means of a reaction of 2-benzthiazolylsulfenyl chloride with an excess of a corresponding alkylamine in an anhydrous reaction medium. Removement of water and moisture from the reaction medium is ensured by azeotropic distillation of a part of the solvent. The method solves also trapping of the excess amine by extraction with water to recycle it in the process, removing of the unconverted raw material from the crude product by chemical refining with aqueous lye and extraction of by-products and pitches by elutriating the product in an organic solvent with the aim to obtain pure benzthiazolylsulfeneimide containing no less than 95% of the active substance, which can be used as a vulcanization accelerator in ruber mixtures.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 6, 2007
    Assignee: Duslo A.S.
    Inventors: Karol Kri{hacek over (z)}anovi{hacek over (c)}, Gabriel {hacek over (S)}ereda, Al{hacek over (z)}beta Śtrauchová, Jozef Pintér, Kamil Vali
  • Process of production of n-alkyl-2-benzthiazolysulfeneimides, device for their production and method of their purification
    Publication number: 20040210062
    Abstract: The solution concerns a process of production of N-alkyl-2-benzthiazolylsulfeneimides by means of a reaction of 2-benzthiazolylsulfenyl chloride with an excess of a corresponding alkylamine in an anhydrous reaction medium. Removement of water and moisture from the reaction medium is ensured by azeotropic distillation of a part of the solvent. The method solves also trapping of the excess amine by extraction with water to recycle it in the process, removing of the unconverted raw material from the crude product by chemical refining with aqueous lye and extraction of by-products and pitches by elutriating the product in an organic solvent with the aim to obtain pure benzthiazolylsulfeneimide containing no less than 95% of the active substance, which can be used as a vulcanization accelerator in ruber mixtures.
    Type: Application
    Filed: March 15, 2004
    Publication date: October 21, 2004
    Inventors: Karol Krizanovic, Gabriel Sereda, Alzbetta Strauchove, Jozef Pinter, Kamil Vali
  • Method of preparation of 4-aminodiphenylamine
    Publication number: 20020045779
    Abstract: A method of preparing 4-aminodiphylamine through an intermediate preparation of 4-nitrodiphenylamine and/or 4-nitrosodiphenylamine and/or their salts by reaction of aniline with nitobenzene in a liquid medium at a temperature of 50 to 130° C.
    Type: Application
    Filed: June 8, 2001
    Publication date: April 18, 2002
    Inventors: Emanuel Beska, Peter Toman, Karol Fiedler, Milan Hronec, Jozef Pinter