Patents by Inventor Vladimir A. Strupinsky

Vladimir A. Strupinsky 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 carbamide-furan resin
    Patent number: 4243780
    Abstract: A method for preparing a carbamide-furan resin comprises reacting a urea-formaldehyde resin unlimitedly soluble in water with urea at a temperature within the range of from 50.degree. to 85.degree. C. and modifying the resulting urea-formaldehyde resin with furyl alcohol at a ratio therebetween expressed in parts by weight equal to 100:20-200 respectively at a temperature within the range of from 50.degree. to 85.degree. C., pH of from 7.2 to 8.9 simultaneously with dehydration of the product being modified under vacuum.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: January 6, 1981
    Inventors: Anatoly A. Kruglikov, Militina A. Nikolaeva, Jury P. Vasin, Zolya Y. Itkis, Vladimir A. Shirinkin, Ida A. Zimina, Vladimir A. Strupinsky, Valery V. Koposov
  • 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