Patents by Inventor Svetlana Vasilievna Vinogradova

Svetlana Vasilievna Vinogradova 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).

  • Poly/arylate-sulphones/and method of preparing same
    Patent number: 4116940
    Abstract: The present invention relates to novel compounds, viz. poly(arylate-sulphones) and to a method of preparing same. The compounds according to the present invention have the following formula: ##STR1## WHEREIN R is a carbon-to-carbon bond in para- or meta-position; ##STR2## n, m are indices denoting statistical distribution of structures over the macrochain; n and m are statistical values ranging from 1 to 10; x is a statistical value ranging from 1 to 100; y = 3 to 20; z = 5 to 20.The method of preparing said poly-(arylate-sulphones) comprises polycondensation of dichloroanhydrides of dicarboxylic acids with a mixture of bisphenol of the formula: ##STR3## and an oligosulphone of the formula: ##STR4## wherein y = 3 to 20; ##STR5## said oligosulphone being contained in the mixture in an amount ranging from 3 to 97% by weight as calculated for the desired poly(arylate-sulphone). The reaction is conducted in a medium of chlorinated hydrocarbons, followed by isolation of the desired product.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: September 26, 1978
    Inventors: Vasily Vladimirovich Korshak, Svetlana Vasilievna Vinogradova, Ivan Pavlovich Storozhuk, Petr Maximilianovich Valetsky, Lev Borisovich Sokolov, Abdulakh Kazbulatovich Mikitaev, Andrei Alexandrovich Askadsky, Jury Sergeevich Kochergin, Grigory Lvovich Slonimsky, Larisa Borisovna Shirokova, Ljudmila Fedorovna Nebosenko, Nikolai Danilovich Zhuravlev
  • Antifriction self-lubricating material
    Patent number: 4045400
    Abstract: An antifriction self-lubricating material comprising fusible polyimides or polyphenylquinoxalines taken in a quantity of from 5 to 95 percent by weight of the antifriction material, and a filler of molybdenum disulphide modified with phosphorus-containing acids or phosphorus-containing esters, the phosphorus content in the modified molybdenum disulphide being within the range from 0.01 to 2 percent by weight, and the modified molybdenum disulphide being taken in a quantity of from 5 to 95 percent by weight of the antifriction material.The modified molybdenum disulphide employed as the filler imparts improved antifriction properties to the material.
    Type: Grant
    Filed: May 14, 1975
    Date of Patent: August 30, 1977
    Inventors: Vasily Vladimirovich Korshak, Irina Alexandrovna Gribova, Martin Izrailevich Kabachnik, Alexandr Petrovich Krasnov, Alla Nikolaevna Chumaevskaya, Olga Vladimirovna Vinogradova, Svetlana Vasilievna Vinogradova, Evgenia Semenovna Krongauz, Alla Markovna Berlin, Alexandr Vasilievich Vinogradov, Galina Ilinichna Gureeva, Leonid Sergeevich Zakharov, Vladimir Dmitrievich Vorobiev, Irina Sergeevna Mazaeva, Georgy Viktorovich Mamatsashvili, Nikolai Sergeevich Zabelnikov, Natalia Monovna Kofman
  • Method of preparing polyimides
    Patent number: 3988303
    Abstract: A method of preparing polyimides by polycondensation of diamines and dianhydrides of tetracarboxylic acids in the presence of a catalyst, viz. a carboxylic acid such as acetic, benzoic, a tetracarboxylic acid taken in an amount of from 0.25 to 10, preferably from 0.8 to 2.5 COOH groups per one unit of a polyimide in a polar organic solvent medium which is inert with respect to the starting diamines and dianhydrides and immiscible with water at a temperature within the range of from 100.degree. to 220.degree. C.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: October 26, 1976
    Inventors: Vasily Vladimirovich Korshak, Svetlana Vasilievna Vinogradova, Yakov Semenovich Vygodsky, Zinaida Vasilievna Geraschenko