Patents by Inventor Valeryan M. Muratov

Valeryan M. Muratov 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 for preparing epoxy resin
    Patent number: 4228271
    Abstract: A process for preparing epoxy resin comprises a step of allowing a mixture of epichlorohydrin, 2,2-bis(p-hydroxyphenyl)propane, and a solvent in the presence of an alkali used in an amount of from 0.4 to 5% by weight of the epichlorohydrin to stay at a temperature of from 45.degree. to 70.degree. C. to obtain a homogeneous mass. Subsequently an alkali used in an amount of from 45 to 50% by weight of the epichlorohydrin is added to the resultant mass, and polycondensation is conducted at a temperature of 70.degree. to 90.degree. C. under stirring to obtain the end product.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: October 14, 1980
    Inventors: Nikolai S. Enikolopov, Anatoly I. Nepomnyaschy, Viktor A. Pekarsky, Tatyana A. Pekarskaya, Mikhail G. Brusilovsky, Svetlana A. Gavrilina, Naum D. Lerman, Oleg K. Maimur, Arkady L. Iljushin, Mikhail A. Markevich, Susanna M. Karpacheva, Lidia P. Khorkhorina, Valeryan M. Muratov, Semen F. Sholk