Use of benzotriazole UV absorbers

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C548S360500, C008S570000, C008S573000

Reexamination Certificate

active

11046913

ABSTRACT:
The use of benzotriazole UV absorbers of formulawhereinA is a radical of formulaB is a radical of formulaR1, R2, R3, R4, R5and R6are each independently of the others hydrogen, C1–C16alkyl; C5–C7cycloalkyl; halogen;R9is hydrogen, C1–C12alkyl; or C5–C7cycloalkyl;R7, R8and R10are each independently of the others hydrogen, C1C12alkyl, C5–C7cycloalkyl, C1–C12hydroxyalkyl;X is halogen; a radical of formula (1s) sulfate, phosphate, lactate, citrate, tartrate;R11is C1–C12alkyl; or C5–C7cycloalkyl;R12and R13are each independently of the other hydrogen; or C1–C5alkyl;x is from 0 to 10; andy is from 1 to 20;in the cosmetic treatment of human hair for protection against UV radiation is described.

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English Abstract of the Japanese patent No. 2000141874 A.
STN Search Report (Apr. 24, 2006).

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