Patents by Inventor Vasily Danilovich Lobkov

Vasily Danilovich Lobkov 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).

  • Fluorosiloxane rubbers and process for producing same
    Patent number: 4075170
    Abstract: The present invention relates to fluorosiloxane rubbers of the formula: ##STR1## wherein: R.sub.F = OCF.sub.3, OC.sub.2 F.sub.5, OC.sub.2 F.sub.4 OCF.sub.3, C.sub.2 F.sub.4 OCF.sub.3, C.sub.3 F.sub.7,R = ch.sub.3, c.sub.6 h.sub.5,x = 1.0 - 0.97,y = 0 - 0.03,m = 370.9 - 1,863.4,n = 0 - 44.5Having an average molecular weight within the range of from 98,000 to 410,250. The present invention also relates to a process for producing said fluorosiloxane rubbers. The process comprises polycondensation of fluorosiloxane-diols of the formula: ##STR2## wherein: R.sub.F = OCF.sub.3, OC.sub.2 F.sub.5, OC.sub.2 F.sub.4 OCF.sub.3, C.sub.2 F.sub.4 OCF.sub.3, C.sub.3 H.sub.7,R = ch.sub.3, c.sub.6 h.sub.5,x = 1.0 - 0.97,y = 0 - 0.03,p = 2.3 - 187.2,q = 0 - 3.8Having an average molecular weight within the range of from 620 to 51,200 at a temperature of from 80.degree. to 150.degree. C in the presence of a basic catalyst or a catalyst comprising a complex salt of trifluoroacetic acid and piperidine.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: February 21, 1978
    Inventors: Alexei Ivanovich Ponomarev, Julia Alexeevna Larionova, Anatoly Kirillovich Ankudinov, Rufina Mikhailovna Ryazanova, Alexandr Leibovich Klebansky, Sergei Vasilievich Sokolov, Vsevolod Volfovich Berenblit, Jury Pavlovich Dolnakov, Tatyana Ivanovna Rymareva, Lev Moiseevich Yagupolsky, Vladlen Vasilievich Malovik, Miron Onufrievich Lozinsky, Viktor Mikhailovich Belous, Boris Efimovich Gruz, Ljubov Antonovna Alexeeva, Alexandr Vasilievich Karlin, Vasily Danilovich Lobkov