Thermally stable ferulic acid derivatives

Details Thermally stable ferulic acid derivatives Thermally stable ferulic acid derivatives

2005-05-10

2005-05-10

Dentz, Bernard (Department: 1625)

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

C424S060000, C424S078020, C424S400000, C424S401000, C514S731000, C514S845000, C560S051000, C560S055000, C560S057000

Reexamination Certificate

active

06890520

ABSTRACT:
A ferulic acid derivative represented by the general formula (1); a process for preparing a ferulic acid derivative represented by the general formula (1), comprising reacting ferulic acid or an ester thereof represented by the general formula (2) with a dihalomethane represented by the general formula CH2X2, wherein X is a halogen atom; and an ultraviolet light-absorbent composition comprising the ferulic acid derivative. Since the ultraviolet light absorbent composition is not only excellent in the ultraviolet light absorption but also very stable against heat, the ultraviolet light absorbent composition can be suitably used as cosmetics which especially require long-term stability.

REFERENCES:
patent: 3600357 (1971-08-01), Stewart et al.
patent: 5288902 (1994-02-01), Taniguchi et al.
patent: 5552135 (1996-09-01), Cioca et al.
patent: 5688991 (1997-11-01), Taniguchi et al.
patent: 64-13016 (1989-01-01), None
patent: WO 02083625 (2002-10-01), None
ITE Letters, vol. 2, No. 6, (2001) pp. 51-54, Feb. 6, 2002.

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