The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 1991
Filed:
Mar. 15, 1989
Manfred Bucheler, Overath, DE;
Hans Gehringer, Cologne, DE;
Bernd Klinksiek, Bergisch Gladbach, DE;
Bernd Koglin, Bergisch Gladbach, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
The invention relates to a process for the preparation of fine-particled, stable, pharmaceutical or cosmetic dispersions consisting of an aqueous phase and an organic phase which is insoluble or not completely soluble in water (oily phase) in which a pre-emulsion is prepared from the two phases by known emulsifying methods and in then pumped through a jet disperser, the temperature, the proportion of the aqueous and organic phases, and the pressure at the jet disperser being adjusted so that phase inversion of the emulsion is effected in the jet disperser at the same time as homogenization and fine dispersion, and in the course of which all the pressure energy is consumed in the dispersing zone and the dispersion leaves as a non-directional stream.