Use of benzotriazole UV absorbers
AssigneeCiba Specialty Chemicals Corporation
InventorThomas Ehlis
Life of this patent
Estimating the term…
Abstract
The use of benzotriazole UV absorbers of formula (1), wherein A is a radical of formula (1a); (1b); or (1c); B is a radical of formula (1d); (1e); (1f), (1g); (1h); (1i); (1k); (1l); (1m); or (1n); R1, R2, R3, R4, R5 and R6 are each independently of the others hydrogen, C1–C16alkyl; C5–C7cycloalkyl; halogen; R9 is hydrogen, C1–C12alkyl; or C5–C7cycloalkyl; R7, R8 and R10 are each independently of the others hydrogen, C1–C12alkyl C5–C7cycloalky, C1–C12hydroxyalkyl; X is halogen; a radical of formula (1s); (1t); or (1u); sulfate, phosphate, lactate, citrate, tartrate; R11 is C1–C12alkyl; or C5–C7cycloalkyl; R12 and R13 are each independently of the other hydrogen; or C1–C5alkyl; x is from 0 to 10; and y is from 1 to 20; in the cosmetic treatment of human hair for protection against UV radiation is described.
Claims6
A method for the cosmetic treatment of human hair for protection against UV radiation which comprises applying thereto a compound of formula
- wherein
- A is a radical of formula
- B is a radical of formula
- R1, R2, R3, R4, R5 and R5 are each independently of the others hydrogen, C1–C16alkyl;
- C5–C7-cycloalkyl;
- or halogen:
- R9 is hydrogen, C1–C12alkyl;
- or C5–C7cycloalkyl:
- R7, R8 and R10 are each independently of the others hydrogen, C1–C12alkyl, C5–C7cycloalkyl or C1–C12hydroxyalkyl;
- X is halogen;
- a radical of formula
- sulfate, phosphate, lactate, citrate or tartrate;
- R11 is C1–C12alkyl;
- or C6–C7cycloalkyl;
- R12 and R13 are each independently of the other hydrogen;
- or C1–C5alkyl;
- x is from 2 to 10;
- and
- y is from 1 to 20.
Dependencies are inferred from the claim text.