With Steam Utilization Patents (Class 134/22.15)
  • Method of preventing or reducing formation of polymeric deposits in vessels during emptying
    Patent number: 6209552
    Abstract: A method of emptying vessels containing dispersions, solutions or suspensions of polymers in which during the emptying process the liquid medium also used to take up the polymers into the dispersion, solution or suspension is passed into the space within the vessel that is not filled by the solution, dispersion or suspension, wherein the liquid medium used to take up the polymers into the dispersion, solution or suspension is introduced in vapor form.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: April 3, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Dobbelaar, Gerd Rehmer, Wolfgang Hümmer, Reinhard Bächer