Sunscreen reagents from hydroxy-substituted acylglycerides

Details Sunscreen reagents from hydroxy-substituted acylglycerides Sunscreen reagents from hydroxy-substituted acylglycerides

2007-01-16

2007-01-16

Page, Thurman K. (Department: 1621)

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

C560S105000, C560S075000, C424S060000, C424S450000, C424S400000, C424S401000

Reexamination Certificate

active

10462882

ABSTRACT:
A class of UVA- and UVB-absorbing esters has been derived by modifying hydroxy triglycerides and other acyltriglycerides with any of a variety of cinnamic acids. The esterification reactions are preferably conducted at elevated temperatures without a catalyst. The resultant agents have the advantage of being synthesized from natural materials, while providing a value-added use for the oil. They are readily formulated into standard UV-absorbing daily-wear cosmetic, hair and skin care, and sunscreen formulations.

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Freitas et al., Glyceridic Esters of p-Methyoxycinnamic Acid. A New Sunscreen of the Cinnamate Class, International Journal of Cosmetic Science, 2001, 23, 147-142.
Compton et al., Lipase-catalyzed synthesis of Ferulate Esters, JAOCA, 2000, 77, 5, 513-519.
Terry A. Isbell et al., Synthesis of Triglyceride Estolides from Lesquerella and Castor Oils, JAOCS, vol. 79, No. 12 (2002).

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