Patents Assigned to Vyzkumny ustav chemickych zrizeni
  • Method of and apparatus for the continuous measurement of changes in rheological properties of monomers during polymerization
    Patent number: 4327587
    Abstract: Method of and apparatus for the continuous measurement of changes in rheological properties of monomers during polymerization. Longitudinal ultrasonic oscillations are introduced into the polymerizing system, and oscillations received after passage through a part of the polymerization system are monitored as the polymerization process proceeds. The ultrasonic oscillations have a frequency of 0.02 to 100 MHz. The monitoring may be of the absorption of the oscillations and/or the rate of propagation of the oscillations.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: May 4, 1982
    Assignee: Vyzkumny ustav chemickych zrizeni
    Inventors: Jiri Docekal, Ludvik Parma, Ivan Pelant, Petr Sladky, Josef Zdravil