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:
May. 13, 1986
Filed:
Jul. 07, 1983
Gerard Lang, Saint-Gratien, FR;
Alain Malaval, Aulnay-sous-Bois, FR;
Gerard Malle, Tremblay-les-Gonesses, FR;
L'Oreal, Paris, FR;
Abstract
Compounds having the formula: ##STR1## in which X.sub.1 =H or Y; X.sub.2 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl or alkoxy, Y or Z; X.sub.3 is H, halogen, C.sub.1 -C.sub.4 alkyl or alkoxy, Y or Z; or X.sub.2 and X.sub.3 together form an alkylidenedioxy containing 1 or 2 C; Y is ##STR2## in which R.sub.1 is H or C.sub.1 -C.sub.4 alkyl or hydroxyalkyl and R.sub.2 is H, alkyl or alkenyl, cycloalkyl, aryl or aralkyl, it being impossible for R.sub.1 and R.sub.2 to be hydrogen simultaneously; and Z denotes ##STR3## in which R.sub.3 is H, --CN or --COR.sub.5 and R.sub.4 is --COR.sub.6, R.sub.5 and R.sub.6 being C.sub.1 -C.sub.20 alkoxy or alkylamino, with the proviso that one of the symbols X.sub.1, X.sub.2 and X.sub.3 is different from the other two and that if X.sub.1 =H, X.sub.2 and X.sub.3 are different from one another and cannot have the meanings Z.sub.2 and Z.sub.3, one of the two necessarily being Y or Z.sub.1 ; if X.sub.1 has the meaning Y, X.sub.2 and X.sub.3 are different from Y and cannot simultaneously have the meaning Z.sub.1, Z.sub.2 or Z.sub.3 are disclosed for use as UV filters.