Aqueous dipping composition

An aqueous dipping composition for coating a textile reinforcing material, comprising

• 4% to 50% by dry weight of at least one rubber latex,
• 0.1% to 10% by dry weight of at least one blocked isocyanate,
• 0.3% to 15% by dry weight of at least one wax selected from the group consisting of microcrystalline wax, synthetic wax and combinations thereof,
• 0% to 6% by dry weight of at least one epoxy group-containing compound, and
• 0% to 15% by dry weight of at least one polymer with carboxylic acid functional groups,
• wherein the amounts in % by dry weight are based on the total weight of the aqueous dipping composition,
• wherein the weight ratio of rubber latex to the sum of blocked isocyanate, epoxy group-containing compound and polymer with carboxylic acid functional groups is at least 2, and
• wherein a maximum amount of each of resorcinol, resorcinol precondensates, formaldehyde and formaldehyde releasers is 0.1% by weight.