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. 02, 2012
Filed:
Oct. 27, 2011
Craig A. Bonda, Winfield, IL (US);
Anna Pavlovic, Elmwood Park, IL (US);
Jean Zhang, Hickory Hills, IL (US);
Craig A. Bonda, Winfield, IL (US);
Anna Pavlovic, Elmwood Park, IL (US);
Jean Zhang, Hickory Hills, IL (US);
Hallstar Innovations Corp., Chicago, IL (US);
Abstract
The photostabilizing electronic excited state energy—particularly singlet state energy from retinoid compounds—has been found to be readily transferred to (accepted by) α-cyanodiphenylacrylate compounds having an alkoxy radical in the four (para) position (hereinafter 'alkoxycrylenes') on one of the phenyl rings having the formula (I): wherein one of Rand Ris a straight or branched chain C-Calkoxy radical, preferably C-C, more preferably methoxy, and the non-alkoxy radical Ror Ris hydrogen; and Ris a straight or branched chain C-Calkyl radical, preferably C-C. The alkoxycrylene compounds of formula (I) significantly increase the photostability of retinoid compounds in a composition by at least 3-fold.