Compositions of fluorescent whitening agents

A composition comprising:

• (a) one or more components selected in the group consisting of:
• mixtures of compounds having formula (I) NR1R2R3 and compounds having formula (II)
• wherein R1, R2 and R3, independently of each other, are selected in the group consisting of C1-C6 linear or branched alkyl groups, C3-C6 cycloalkyl groups, C1-C6 linear or branched hydroxyalkyl groups, C3-C6 hydroxycycloalkyl groups, C1-C6 linear or branched alkoxyl groups;
• and wherein at least one among R1, R2 and R3 is a C1-C6 linear or branched hydroxyalkyl group;
• R4, R5, R6, R7, independently of each other, are selected in the group consisting of H, C1-C6 linear or branched alkyl groups, C3-C6 cycloalkyl groups, C1-C6 linear or branched hydroxyalkyl groups, C3-C6 hydroxycycloalkyl groups;
• and X is selected in the group consisting of hydrogen, alkaline metals, alkaline-earth metals, ammonium or ammonium derived from a compound of formula (I);
• compounds of formula (III)
• wherein R4, R5, R6, R7, are as above defined and X′ is an ammonium derivative of a compound of formula (I);
• and
• mixtures thereof;
• and
• (b) one or more components selected among the compounds of formula (IV)
• wherein R8 is selected in the group consisting of hydroxyl groups and halogen atoms;
• R9 is selected in the group consisting of hydroxyl groups and aniline groups;
• R10 is a phenyl group;
• wherein the weight quantity of the compound of formula (IV) is between 0.1 ppm and 50 ppm with respect to the sum of the weights of the compounds of formula (I), (II) and (III).