Patent ID: 8835575

Claim:
A process for continuously producing water-absorbing polymer particles by polymerizing an aqueous monomer solution or suspension comprising a) at least one ethylenically unsaturated monomer which bears acid groups and may be at least partly neutralized, b) at least one crosslinker, c) at least one polymerization initiator, d) optionally one or more ethylenically and/or allylically unsaturated monomer copolymerizable with the monomer specified under a), and optionally one or more water-soluble polymer, wherein at least the monomer a) stems from at least two sources and the monomer a) from one source differs from the monomer a) from at least one other source in a content of at least one secondary component by at least 0.0035% by weight, and the at least one secondary component is selected from the group consisting of acetic acid, formic acid, propionic acid, 2-furfural, 3-furfural, allyl acrylate, benzaldehyde, maleic anhydride, maleic acid, protoanemonin, acrolein, formaldehyde, and benzoic acid.