Process for Producing Superabsorbents

A process for producing superabsorbent polymer particles, comprising polymerizing a monomer solution, comprising

• a) partially neutralized acrylic acid,
• b) at least one crosslinker, and
• c) at least one initiator,
• drying a resulting polymer gel, optionally grinding and classifying a resulting dried polymer gel and optionally thermally post-crosslinking and cooling resulting polymer particles, wherein the partly neutralized acrylic acid is formed by mixing acrylic acid, an aqueous solution of a base, and optionally water, the acrylic acid used is stored in at least one tank (B1) at a production site for acrylic acid and in at least one tank (B2) at a production site for superabsorbent polymer particles and supplied from the at least one tank (B2) at the production site for superabsorbent polymer particles to the neutralization, the at least one tank (B1) at the production site for acrylic acid and the at least one tank (B2) at the production site for superabsorbent polymer particles are interconnected by one single pipe line (3) and a flow inside the pipe line (3) is temporarily reversed during an interruption of the production of superabsorbent polymer particles.