An composition comprising:(A) a mixture comprising at least one (
thio)
phosphoric acid triamide according to the general formula (I)R1R2N—P(X)(NH2)2,whereinX is
oxygen or
sulfur;R1 is a C1 to C20
alkyl, C3 to C20 cycloalkyl, C6 to C20
aryl, or dialkylaminocarbonyl group;R2 is H, orR1 and R2 together with the
nitrogen atom linking them define a 5- or 6-membered saturated or unsaturated heterocyclic radical, which optionally comprises 1 or 2 further heteroatoms selected from the group consisting of
nitrogen,
oxygen, and
sulfur,and(C) at least one amine selected from the group consisting of(C1) a polymeric
polyamine, and(C2) an amine containing not more than one amino group and at least three alkoxy- or hydroxy-substituted C2 to C12
alkyl groups R21, wherein at least one of the groups R21 is different to the other groups R21, and(C3) an amine containing not more than one amino group and at least two alkoxy- or hydroxy-substituted C2 to C12
alkyl groups R22, wherein at least one of the groups R22 bears the alkoxy or hydroxy
substituent at a secondary or
tertiary carbon atom and wherein at least one of the groups R22 is different to the other group(s) R22, and(C4) an amine containing at least one saturated or unsaturated C8 to C40 alkyl group R23, and(C5) a saturated or unsaturated
heterocyclic amine which contains at least one
oxygen atom as ring atom and which does not contain a further
alkoxy group.