Substrate with super-absorbent material, method for manufacture thereof and use

[0055]The super-absorbent composition according to the invention was prepared from two components. Component 1 consists of an aqueous solution of a pre-cross-linked poly(meth)acrylic acid, which can be partially present in the form of a salt. The counter-ions can in that case be sodium, potassium or ammonium. In addition, the solution can optionally contain acrylamide as co-monomer. The monomer containing the carboxyl group ((meth)acrylic acid) must however always be present in excess.

[0056]The second component is the actual reactive cross-linking agent, which preferably contains two functional groups which are capable after thermal excitation of reacting in a short time with carboxylate or carbonic acid functional groups.

[0057]Shortly before application of the mixture to the substrate, component 2 in a quantity of 0.1-5% by weight, preferably 0.5-3% by weight related to the total quantity of component 1, is added to component 1 (95-99.9% by weight) and mixed homogeneously therewith.

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