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:
Jan. 22, 1980
Filed:
Dec. 16, 1977
James R France, Overland Park, KS (US);
Fred Baiocchi, Prairie Village, KS (US);
George A Concar, Bloomingdale, IL (US);
C. J. Patterson Company, Kansas City, MO (US);
Abstract
A highly stable water in oil emulsion system for cosmetic or pharmaceutical preparations is provided wherein an unexpectedly high proportion of from about 70% to about 80% of an internal aqueous phase may be dispersed as globules usually of about one micron in a continuous external oleaginous phase by use of an emulsifier composition containing cooperatively effective amounts of (1) a di- or tri-valent salt of the esterification product of a C.sub.10 to C.sub.22 fatty acid with a hydroxy carboxylic acid containing 2 to 4 carbon atoms (preferably calcium stearoyl-2-lactylate), and (2) a co-emulsifier compatible with emulsion (1) having an HLB value and present in a quantity to cause said emulsifier composition to have an effective HLB value within the range of about 4.6 to about 6.6. An emulsion may be produced using simple mechanical mixing techniques which has a static shelf life of at leat about six months at approximately 25.degree. C.