The present invention relates to diaminotriazine compounds of the formula (I) and to their use as herbicides. The present invention also relates to agrochemical compositions for crop protection and to a method for controlling unwanted vegetation. Formula (I), wherein A is 5-or 6-membered monocyclic heteroaryl, which comprises 1, 2 or 3 heteroatoms as ring members, which are selected from O, S and N, where heteroaryl is substituted by 1, 2, 3, 4, or 4 substituents RA, R1, R5 are inter alia H, OH, S(O)2NH2, CN, С1-С6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, (C3-C6-cycloalkyl)-C1-C4-alkyl, C1-C6-alkoxy, (C1-C6-alkoxy)-C1-C6-alkyl, (C1-C6-alkyl)-carbonyl, (C1-C6-alkoxy)carbonyl, (С1-С6-alkyl)sulfonyl, (C1-C6-alkylamino)carbonyl, di(C1-C6-alkyl)aminocarbonyl, (С1-С6-alkylamino)sulfonyl, di(C1-C6-alkyl)aminosulfonyl and (C1-C6-alkoxy)sulfonyl, etc. R2 is H, halogen, OH, CN, С1-С6-alkyl, C2-C6-alkenyl, C3-C6-alkynyl, (C1-C6-alkoxy)- C1-C6-alkyl, C3-C6-cycloalkyl, C3-C6-cycloalkenyl, (C3-C6-cycloalkyl)-С1-С4-al
