DIPHENYL Derivatives of the formula formula * * * * in which x means co - CR7 = or > CR8 - R3 R6 are, independently, Hydrogen, Hydroxy, alkoxy alkyl of C1 - C4, C1 - C4Alkyl of C1 - C4 - S -, alkyl of C1 - C4 - So - alkyl of C1 - C4 - SO2 -, halogen, Nitro, cyano, or a Group - oso2y, R4, R5 are, independently, a Group - n = N - N (R2) 2 - or - oso2y Group,R7 is Hydrogen, Methyl or Ethyl phenyl substituted with Waste residue, R9, R10, which is connected directly to the C Atom carries R7, R8 means Hydrogen Ethyl, cn and No2- ch2ch2 Halogen or ch2ch2oh, R9, R10 mean, independently, Hydrogen, hydroxyl, alkyl of C1 - C4, C1 - C4 alkoxy, halogen, Nitro, cyano,A Group - n = N - N (R2) 2 - or group - oso2y and means o or n 2 (R1), R1 is Hydrogen, Methyl or Ethyl and methyl or Ethyl R2 means,Under the condition that total per Molecule (1) one to two groups - n = N - N (R2) 2 - and one to two groups oso2y are in any Ring carbon Atoms of the Aromatic Rings.As well as free acids, their salts, solvates and solvates of such Salts and solvates of the free acids.Derivados de difenilo de la fórmula**Fórmula** en la cual X significa CO o-CR7>=CR8-, R3, R6 significan, independientemente entre sí, hidrógeno, hidroxilo, alquilo de C1-C4, alcoxi de C1-C4, alquilo de C1-C4-S-, alquilo de C1-C4-SO-, alquilo de C1-C4-SO2-, halógeno, nitro, ciano, o un grupo -OSO2Y, R4, R5 significan, independientemente entre sí, un grupo -N>=N-N(R2)2- o un grupo -OSO2Y, R7 significa hidrógeno, metilo, etilo o un residuo fenilo sustituido con los residuos R9, R10, el cual está conectado directamente al átomo de C que porta R7, R8 significa hidrógeno, etilo, CN, NO2, -CH2CH2-halógeno o CH2CH2OH, R9, R10 significan, independientemente entre sí, hidrógeno, hidroxilo, alquilo de C1-C4, alcoxi de C1-C4, halógeno, nitro, ciano, un grupo -N>=N-N(R2)2- o un grupo -OSO2Y, Y significa OH o N(R1)2, R1 significa hidrógeno, metilo o etilo y R2 significa metilo o etilo, con la condición de que por molécula total (1) uno a
