▎ 摘　　要

NOVELTY - Super shrinkage type polycarboxylic acid water reducing agent comprises shrinkage-reducing polycarboxylic acid water reducing agent, anti-separating agent and slump retaining agent. The shrinkage-reducing polycarboxylic acid water reducing agent is obtained by free radical copolymerization of modified polyol acrylate and polyether macromonomer. USE - Used as super shrinkage type polycarboxylic acid water reducing agent. ADVANTAGE - The method: overcomes the problem of easy delamination of polyol acrylate in water; improves its water solubility and increases the efficiency of solution radical polymerization of dipropylene glycol diacrylate and dipropylene glycol monoacrylate; improves the efficiency of radical polymerization of modified polyol acrylate solutions; increases the number of shrinkage reducing groups in the synthetic shrinkage-reducing polycarboxylic acid water reducing agent; improves the water solubility and reactivity of the shrink-reducing functional monomer; and improves the shrink-reducing performance of the product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the water reducing agent, comprising subjecting modified polyol acrylate and polyether macromonomer to free radical copolymerization to obtain the shrinkage-reducing polycarboxylic acid water reducing agent, and compounding the shrinkage-reducing polycarboxylic acid water reducing agent, anti-separating agent and slump retaining agent to obtain the product.