| 摘要 |
A description is given of divinylstilbenesulfonic acid derivatives of formula (1), wherein X is (a); (b); -CN; or (c); Y1 and Y2 are each independently of the other hydrogen or -SO3<->M<+>; at least one Y1 or Y2 being -SO3<->M<+>; R1 is hydrogen; C1-C18alkyl or C2-C18alkenyl which is unsubstituted or substituted by cyano, -SH, C1-C5alkylthio, C1-C5alkoxy, amino, C1-C5monoalkylamino, C1-C5dialkylamino or carboxy; mono-, di- or trihydroxy-C1-C5alkyl; a radical of formula (1a), amino; C1-C5monoalkylamino; C1-C5dialkylamino; phenyl or phenyl-C1-C3alkyl which is unsubstituted or substituted by one or several C1-C5alkyl, C1-C5alkoxy, hydroxy, cyano, sulfo or halogen; R2 and R3 are each independently of the other hydrogen; C1-C5alkyl which is unsubstituted or substituted by cyano, -SH, C1-C5alkylthio, C1-C5alkoxy or carboxy; hydroxy-C1-C5alkyl; mono- or di-C1-C5alkylamino-C1-C5alkyl; phenyl or phenyl-C1-C3alkyl which is unsubstituted or substituted by one or several C1-C5alkyl, C1-C5alkoxy, hydroxy, cyano, sulfo or halogen; or R2 and R3, together with the linking nitrogen atom, are a five- or six-membered heterocyclic radical; R4 is hydrogen, C1-C5alkyl, C1-C5alkoxy, hydroxy, cyano, sulfo or halogen, M is hydrogen; an alkali metal cation or alkaline earth metal cation; or a cation formed from an amine; m1 is a number from 1 to 5; and n1 is a number from 1 to 3. These compounds are used for optically brightening synthetic or natural organic materials. |
