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:
Apr. 23, 1996
Filed:
May. 11, 1994
Sophie Lecomte, Paris, FR;
Gwenola Le Gars, Paris, FR;
L'Oreal, Paris, FR;
Abstract
Process for the manufacture of a solid cosmetic composition using plaster of Paris, in which: a pulverulent mixture (P) consisting of: 1) calcium sulphate hemihydrate (CaSO.sub.4.1/2 H.sub.2 O) in powder form, 2) a hydrophobic fraction (OF) comprising at least one fatty substance and/or at least one pulverulent substance treated by coating or chemical grafting so as to give it hydrophobic properties, 3) a hydrophilic fraction (IF) in powder form, is prepared, the weight proportion IF/OF being between 0.08 and 7.5; an aqueous phase (AP) in liquid form is prepared; the pulverulent mixture (P) and the aqueous phase (AP) are headed in a weight proportion P/AP of between 0.2 and 2, so as to obtain a pourable mixture; the pourable mixture is run into a mould; it is left to harden by hydration of the calcium sulphate hemihydrate to calcium sulphate dihydrate (CaSO.sub.4.2H.sub.2 O), and the product is removed from the mould.