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:
Oct. 01, 1996
Filed:
Mar. 22, 1995
Jean-Luc Mura, Rixheim, FR;
Sandoz Ltd., Basel, CH;
Abstract
A method of improving the light fastness of textile materials using an aqueous dispersion of a compound of formula I, ##STR1## having a first (A) and a second (B) benzoxazine-4-one ring joined by a phenylene bridging member; a variable bond between the first benzoxazine-4-one ring (A) and the phenylene bridging member, said variable bond being meta- or para- to the bond between the second benzoxazine-4-one ring (B) and the bridging member; wherein each R.sub.1 is independently hydrogen, halogen, nitro, C.sub.1-2 alkyl, C.sub.1-4 alkoxy, carboxy, sulfonic acid, C.sub.1-3 alkylcarbonyl, benzoyl or C.sub.1-4 alkoxycarbonyl and; R.sub.2 is hydrogen, chlorine, bromine, methyl, C.sub.1-2 alkoxy, phenyl, hydroxy, nitro, carboxy or sulfonic acid.