Antioxidants for the stabilization of formulations comprising surfactants

A cleaning composition comprising

• (a1) a phenolic antioxidant of the formula
• 55
• (a2) an antioxidant of the formula
• 56
• in which in the formulae (1), (2) and (3)
• R1 is hydrogen;
• C1-C22 alkyl;
• C1-C22 alkylthio;
• C5-C12 cycloalkyl;
• phenyl;
• or C7-C9 phenylalkyl;
• R2 is C1-C22 alkyl;
• C5-C12 cycloalkyl;
• phenyl;
• C7-C9 phenylalkyl;
• or —SO3M;
• Q is —CmH2m—;
• 57
• —CmH2m—NH;
• a radical of the formula
• 58
• T is —CnH2n—;
• —(CH2)n—CH2—;
• 59
• or a radical of the formula
• 60
• V is —O—;
• or —NH—;
• a is 0;
• 1;
• or 2;
• b, c and d independently of one another are 0;
• or 1;
• e and f independently of one another are an integer from 1 to 3;
• and
• m, n and p independently of one another are an integer from 1 to 3;
• when e is 1,
• R3 is hydrogen;
• M;
• C1-C22 alkyl;
• C5-C12 cycloalkyl;
• C1-C22 alkylthio;
• C2-C22 alkenyl;
• C1-C18 phenylalkyl;
• a radical of the formula
• 61
• where,
• when R3 is C1-C22 alkyl, b=0;
• or Q is a radical of the formula (1a) or (1b);
• g is 0 or 1;
• M is hydrogen;
• alkali metal;
• or ammonium;
• when e is 2,
• R3 is a direct bond;
• —CH2—;
• 62
• —O—;
• or —S—;
• when e is 3,
• R3 is a radical of the formula
• 63
• where,
• when R3 is a radical of the formula (1k), c=1;
• and;
• R4 and R5 independently of one another are hydrogen;
• or C1-C22alkyl;
• and
• (b) a surfactant comprising a long alkyl or alkenyl chain.