| abstract |
Disclosed is the use of benzotropolone derivatives of formula (1), wherein R 1 , R 2 and R 7 independently from each other are hydrogen; C 1 -C 3 alkyl; or COR 8 ; R 3 is hydrogen; or COOR 9 R 4 is hydrogen; or C 1 -C 3 alkyl; R 5 is hydrogen; hydroxy; C 1 -C 3 -alkoxy; or -0-(CO)-R 10 ; R 6 is hydrogen; C 1 -C 3 alkyl; or COR 8 ; or R 5 and R 6 together may form a five or six membered ring; or R 6 and R 7 together form a five or six membered ring; and R 8 , R 9 , R 10 independently of each other are C 1 -C 30 alkyl; for protecting body-care and household products from photolytic and oxidative degradation. |