abstract |
Disclosed is the use of benzotropolone derivatives of formula n nwhereinn nR 1 , R 2 and R 7 independently from each other are hydrogen; C 1 -C 3 alkyl; or COR 8 ;n nR 3 is hydrogen; or COOR 9 n nR 4 is hydrogen; or C 1 -C 3 alkyl;n nR 5 is hydrogen; hydroxy; C 1 -C 3 -alkoxy; or —O—(CO)—R 10 ;n nR 6 is hydrogen; C 1 -C 3 alkyl; or COR 8 ; orn nR 5 and R 6 together may form a five or six membered ring; orn nR 6 and R 7 together form a five or six membered ring; andn nR 8 , R 9 , R 10 independently of each other are C 1 -C 30 alkyl;n nfor protecting body-care and household products from photolytic and oxidative degradation. |