OPTICAL BRIGHTENER FOR BLEACHING OF PAPER

The present are related with one optical brightener for the bleaching and brightening of paper， cardboard， textiles and fabrics， with one process For the preparation of the optical brightener， with the use of said brightener in processes of manufacturing of paper and with one process of bleaching of paper. Claim 1: One compound of the formula (1) in which the Z1 and Z2 signify， of independent manner between them， OR9 or OR10， where R9 and R10 represent， Of independent manner between each other， linear C1 to C3 alkyl or C3 branched alkyl; or Z1 and Z2 mean， of independent manner between them， NR2R3 or NR4R5， Where R2 and R4 signify， manner of independent between them， hydrogen， alkyl C1 to C4 linear alkyl or C3-4 branched alkyl， linear C2-3 hydroxyalkyl or Branched C3 hydroxyalkyl， CH2CO2M， CH2CH2CONH2 or CH2CH2CN; R3 and R5 signify， of independent manner between each other， linear C1 to C4 alkyl or C3-4 branched alkyl， Linear C2-3 alkyl or branched C3 alkyl， CH2CH2SO3M， CH2CO2M， CH (CO2M) CH2CO2M or CH (CO2M) CH2CH2CO2M， benzyl or R2 and R3 or R4 and R5 mean， together with The atom nitrogen of next one morpholine ring; and R1 and R6 signify， manner of independent between them， hydrogen， other linear C1 to C4 alkyl or C3-4 branched alkyl， Linear C2 to C3 alkyl or branched C3 alkyl， CH2CH2CONH2 or CH2CH2CN; R7 and R8， represent a way of independent between them， hydrogen， Alkyl C1 to C4 linear alkyl or C3-4 branched alkyl， with the condition of which is less by one of R7 or R8 is alkyl C1 to C4 linear or C3-4 branched alkyl; And X and y， of independent manner between each other， CO2M or SO3M; m and n are 0， 1 or 2， with the condition of that by the less one of m or n is by less than 1; and M Means one cation for balancing the anionic charge selected from the group comprising or consists essentially in that hydrogen， one cation of alkali metal， One cation of alkaline earth metal， ammonium， ammonium which is mono -， di-tri-or tetrasubstituted with alkyl to C1 to C4 linear alkyl or C3-4 branched Radical， ammonium which is mono -， di-， tri-or tetrasubstituted with one linear hydroxyalkyl radical C1 to C4 or branched C1 to C4 hydroxyalkyl， ammonium that is di - ， tri-or tetrasubstituted with one mixture of one alkyl radical C1 to C4 linear alkyl or C3-4 branched or one linear hydroxyalkyl radical C1 to C4 or Branched C1 to C4 hydroxyalkyl or mixtures of such cations， where if R7 is alkyl C1 to C4 linear alkyl or C3-4 branched alkyl， then n represents by less than 1， And/or if R8 is linear C1 to C4 alkyl or C3-4 branched alkyl， then m represents by less than 1.