Patents by Inventor Vladimir Vasilievich Kosovtsev

Vladimir Vasilievich Kosovtsev 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 of preparing phenolamine resins
    Patent number: 4107141
    Abstract: Novel phenolamine resins which are condensation products of hexamethylene tetramine with a phenol component such as an alkylphenol with 5 to 12 carbon atoms in the alkyl radical, styrene-alkylated phenol, cumylphenol, diphenylolpropane, hydroxybenzoic acid. The condensation reaction is conducted at a temperature ranging from 90.degree. to 180.degree. C.The products thus prepared are efficient stabilizing agents for rubbers and vulcanizates.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: August 15, 1978
    Inventors: Vladimir Vasilievich Moiseev, Vladimir Vasilievich Kosovtsev, Galina Prokofievna Kolesnikova, Tamara Ivanovna Esina, Alexandr Nikolaevich Polukhin, Viktor Alexandrovich Zimnukhov
  • Method of stabilization of rubbers and vulcanizates
    Patent number: 4075166
    Abstract: A method of stabilization of rubbers and vulcanizates thereof which involves incorporation, into a rubber, its solution or latex, of antioxidants, viz. phenolamine resins prepared by condensation of hexamethylene tetramine with alkyl-, alkenynyl-, dialkyl-, arylalkyl-, halo-substituted phenol, dihydroxydiphenylalkanes, hydroxybenzoic acids. Said resins may be used in a combination with conventional antioxidants such as secondary amines, diamines, 2,6-dialkylderivatives of phenol, phosphorus- and sulphur-containing compounds.Said phenolamine resins are considerably superior over conventional antioxidants in their efficiency against thermal ageing during thermomechanical processing.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: February 21, 1978
    Inventors: Vladimir Vasilievich Moiseev, Vladimir Vasilievich Kosovtsev, Galina Prokofievna Kolesnikova, Viktor Alexandrovich Zimnukhov, Lidia Alexeevna Miroshnikova, Esfir Abramovna Kimel, Edit Konstantinovna Chefranova, Valentina Ivanovna Guseva, Ljudmila Vladimirovna Masagutova