Grafting copolymer, useful e.g. as additives in construction chemical applications, water retention agents and fluid loss additives, comprises silica, which is reacted with an unsaturated silane and a polymer containing sulfonic acid

摘要

Grafting copolymer comprises silica (A), which is reacted with an unsaturated silane and a polymer (B1) containing sulfonic acid. An independent claim is included for the preparation of the grafting copolymer.