Method of quenching electronic excitation of...

Details Method of quenching electronic excitation of... Method of quenching electronic excitation of...

2007-08-09

2009-10-06

Choi, Ling-Siu (Department: 1796)

Compositions

Light transmission modifying compositions

Ultraviolet

C424S059000, C424S060000, C424S401000, C514S520000, C524S090000, C558S410000

Reexamination Certificate

active

07597825

ABSTRACT:
The photostabilizing electronic excited state energy—particularly singlet state energy from a UV-absorbing molecule has been found to be readily transferred to (accepted by) α-cyanodiphenylacrylate compounds of formulas (I) and (V) having an alkoxy radical preferably in the four (para) position (hereinafter methoxy crylenes) on one or both of the phenyl rings:wherein at least one of R1and R2is a straight or branched chain C1-C12alkoxy radical, preferably C1-C8, more preferably C1-C4, and most preferably methoxy, and any non-alkoxy radical R1or R2is hydrogen; and R3is a straight or branched chain C1-C24alkyl radical, preferably C12-C24, more preferably C20;wherein A and B are the same or different and are selected from the group consisting of oxygen, amino and sulfur; R1and R3are the same or different and are selected from the group consisting of C1-C30alkyl, C2-C30alkylene, C2-C30alkyne, C3-C8cycloalkyl, C1-C30substituted alkylene, C2-C30substituted alkyne, aryl, substituted aryl, heteroaryl, heterocycloalkyl, substituted heteroaryl and substituted heterocycloalkyl; R2is selected from the group consisting of C1-C30alkyl, C2-C30alkylene, C2C30alkyne, C3-C8cycloalkyl, C1-C30substituted alkyl, C3-C8substituted cycloalkyl, C1-C30substituted alkylene, C2-C30substituted alkyne; R4, R5, R6and R7are the same or different and are selected from the group consisting of C1-C30alkoxy straight chain or branched and a, b, c and d are each either 0 or 1, and a, b, c and d add up to 1, 2, 3, or 4.

REFERENCES:
patent: 2623060 (1952-12-01), Cragoe
patent: 3215724 (1965-11-01), Strobel et al.
patent: 3337357 (1967-08-01), Strobel et al.
patent: 4284621 (1981-08-01), Preuss et al.
patent: 4307240 (1981-12-01), Ching
patent: 4562278 (1985-12-01), Hill
patent: 5576354 (1996-11-01), Deflandre et al.
patent: 5738842 (1998-04-01), Raspanti et al.
patent: 5783307 (1998-07-01), Fagerburg et al.
patent: 5989528 (1999-11-01), Tanner et al.
patent: 6113931 (2000-09-01), Bonda et al.
patent: 6284916 (2001-09-01), Bonda et al.
patent: 6485713 (2002-11-01), Bonda et al.
patent: 6518451 (2003-02-01), Bonda et al.
patent: 6537529 (2003-03-01), Bonda
patent: 6551605 (2003-04-01), Bonda
patent: 6800274 (2004-10-01), Bonda et al.
patent: 6919473 (2005-07-01), Bonda et al.
patent: 6962692 (2005-11-01), Bonda et al.
patent: 7235587 (2007-06-01), Bonda et al.
patent: 2003/0000130 (2003-01-01), Wood et al.
patent: 2003/0176542 (2003-09-01), Abe et al.
patent: 2004/0047817 (2004-03-01), Bonda
patent: 2004/0047818 (2004-03-01), Bonda
patent: 2004/0247539 (2004-12-01), Wendel et al.
patent: 2005/0191249 (2005-09-01), Bonda et al.
patent: 2006/0002869 (2006-01-01), Bonda et al.
patent: 1222926 (1966-08-01), None
patent: 1323743 (2003-07-01), None
patent: 2005139263 (2005-06-01), None
patent: 1273360 (1986-11-01), None
patent: WO-0027337 (2000-05-01), None
patent: WO-0242368 (2002-05-01), None
Katritzky, Alan R.; Nair, Satheesh K.; Witek, Rachel M.; Hutchins, Steven M. Synthesis of 3,3-diarylpyrrolidines from diaryl ketones, ARKIVOC (Gainesville, FL, United States) (2003), (5),pp. 9-18 Arkat USA Inc. URL: http://www.arkatusa.org/zark/journal/2003/Bernath/GB-594J/594J.pdf.
Eric Chatelain and Bernard Gabard, Photostabilization of Butyl methoxydibenzoylmethane (Avobenzone) and Ethylhexyl methoxycinnamate by Bis-ethylhexyloxyphenol methoxyphenyl triazine (Tinosorb S), a New UV Broadband Filter, Photochemistry and Photobiology, 2001, 74(3): 401-406.
Craig Bonda, Research Pathways to Photostable Sunscreens, Feb. 5, 2008, vol. 123, No. 2. pp. 1, 49-60. issue of Cosmetics & Toiletries Magazine.
European Search Report for EP 08 10 3204, dated Jul. 17, 2008.
European Search Report for EP 08 10 3205, dated Jul. 25, 2008.
N. G. Senchenya, et al.,Silicon-containing esters of α-cyanoacrylic acid: synthesis and properties, Russian Chemical Bulletin, vol. 42, No. 5, May 1993, pp. 909-911.
International Search Report for PCT/US2008/058456 dated Jun. 27, 2008.
Written Opinion for PCT/US2008/058456 dated Jun. 27, 2008.

Affiliated with

Also associated with

Rating

Method of quenching electronic excitation of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of quenching electronic excitation of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of quenching electronic excitation of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4057695