| 摘要 |
Benzylidene- gamma -butyrolactone derivatives are claimed, as well as compositions containing them, and their use in sun protection compositions for use on the skin or hair and for the protection of technical products. Benzylidene- gamma -butyrolactone derivatives of formula (I) are new. R = H or 1-6C alkyl or cycloalkyl; R1-R5 = H (a maximum of 4 may be H simultaneously), or 1-8C alkyl or cycloalkyl; or R1+R2 and/or R3+R4 = a 5-7C carbocyclic ring. An Independent claim is included for preparations containing the above compounds. |
