| abstract |
Compounds of the formula I <IMAGE> I in which R1 and R5, independently of one another, are C1-C12alkyl; R2, R3 and R4, independently of one another, are H; C1-C12alkyl; C2-C6alkenyl; C1-C12alkoxy; C2-C18alkenyloxy; halogen; trifluormethyl; C7-C11phenylalkyl; phenyl; phenyl which is substituted by C1-C18alkyl, C1-C18alkoxy or halogen; phenoxy; or phenoxy which is substituted by C1-C18alkyl, C1-C18alkoxy or halogen; the two radicals R7 are identical or different and are hydrogen or C1-C18alkyl; or are C1-C18alkyl which is substituted by OH, C1-C18alkoxy, C3-C6alkenyloxy, halogen, -COOH, -COOR8, -CONH2, -CONHR9, -CON(R9)(R10), -NH2, -NHR9, -N(R9)(R10), -NHCOR11, -CN, -OCOR11, phenoxy and/or phenoxy which is substituted by C1-C18alkyl, C1-C18alkoxy or halogen; or the radicals R7 are C3-C50alkyl which is interrupted by -O- and may be substituted by OH, phenoxy or C7-C18alkylphenoxy; or the radicals R7 are C3-C6alkenyl; glycidyl; C5-C12cycloalkyl; C5-C12cycloalkyl which is substituted by OH, C1-C4alkyl oder -OCOR11; C7-C11phenylalkyl which is unsubstituted or substituted by OH, Cl or CH3; C4-C14alkenyl which is substituted by OH or -OCOR11; -CO-R12 or -SO2-R13; and R8 to R14 are as defined in claim 1, are highly suitable for stabilizing organic material, including photographic recording material. |