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. 28, 1995
Filed:
Mar. 20, 1992
Jean F Grollier, Paris, FR;
L'Oreal, Paris, FR;
Abstract
The invention relates to a photostable filtering emulsion containing in association, in the aqueous phase, a photostable filter with a wide absorption band constituted by partially or totally neutralized benzene-1,4-[di(3-methylidene-10-camphosulphonic)] acid, and in the oily phase a photostable system which filters the UV-A rays containing at least one of the following compounds: N-(2-ethylhexyl)-3-[(3'-methoxy-4'-n-butoxy)benzylidene]-10-camphosulphona mide (compound 2), 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (compound 3) and 4-isopropyldibenzoylmethane (compound 4), these two latter compounds 3 and 4 being photochemically stabilized by at least one fat-soluble filter of .lambda..sub.max less than 330 nm chosen from the following benzylidene camphor derivatives: benzylidene camphor (compound 5), p-methylbenzylidene camphor (compound 6), N-(2-ethylhexyl)-4-(3'-methylidene camphor)benzene sulphonamide (compound 7) and 3-methoxy-4-n-butoxybenzylidene camphor (compound 8). This composition is intended to protect the skin from UV rays of wavelengths between 280 and 380 nm.