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. 18, 1997
Filed:
May. 30, 1995
Applicant:
Inventor:
Gerd H Dahms, Velbert, DE;
Assignee:
Tioxide Specialties Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; A61K / ;
U.S. Cl.
CPC ...
252302 ; 252314 ; 424 59 ; 514937 ; 514938 ;
Abstract
The invention concerns a process for producing a water-in-oil emulsion comprising mixing an oil dispersion of particles of a metallic oxide having a primary particle size less than 0.2 micron with one or more emulsifiers and an aqueous phase. The method enables the production of such emulsions containing relatively small quantities of emulsifiers and a novel emulsion made available by the invention contains less than 1% by weight of emulsifiers, 10 to 60% by weight of an oil phase and at least 40% by weight of an aqueous phase. The emulsions so formed are useful in preparing UV absorbing compositions such as sunscreens, skin protectants, moisturisers and after-sun lotions.