Patents by Inventor Natalya V. Shorygina

Natalya V. Shorygina 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 producing hydrocarbon-phenol-formaldehyde resin
    Patent number: 4187369
    Abstract: The process according to the present invention comprises a continuous polycondensation of the anthracene fraction of coal tar boiling within the range of from 270.degree. C. to 350.degree. C., phenol and formaldehyde at a weight ratio between the components of 1:3-4:1-1.2 in the presence of 0.5 to 1.2% by weight of an acidic catalyst at a supply rate of a mixture of said components of 500-550 g/hr.The present invention makes it possible to continuously prepare the desired product, whereby its output from a unit production volume is substantially increased. The product has a high curing rate and a high coke value.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: February 5, 1980
    Inventors: Rudolf Z. Pavlikov, Natalya V. Shorygina, Vladimir A. Strupinsky, Anatoly A. Kruglikov, Jury G. Farbshtein, Iosif L. Klipinitser