Filtration method for graft polymer polyols

Details Filtration method for graft polymer polyols Filtration method for graft polymer polyols

B - Operations, Transporting

01

D

B01D 29/96 (2006.01) B01D 29/09 (2006.01) B01D 39/00 (2006.01)

Patent

CA 2503051

An index filtration method is disclosed for filtering graft polyol dispersions. The method allows for the rapid filtration of large volumes of graft polyol dispersion in an economical manner. The process can be highly automated. The resulting filtered graft polyol dispersion mainly has particles of 25 microns or smaller and is stable under a variety of conditions for at least 9 weeks.

L'invention concerne un procédé de filtrage permettant de filtrer des dispersions de polyol greffé. Ce procédé permet de filtrer rapidement de grand volumes de dipersions de polyol greffé de manière peu onéreuse. Ce procédé peut être très automatisé. La dispersion de polyol greffé obtenue comprend principalement des particules de 25 microns ou plus petites et est stable dans divers états pendant au moins neuf semaines.

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