acrylic acid polymer, process for preparing aqueous solutions of acrylic acid polymers, and use of acrylic acid polymers.

摘要

an acrylic acid polymer having a weight average molecular weight mw in the range 3,500 to 12,000 g / mol and a polydispersity index mw / mn = 2,5, where 30% to 60% of the acid groups of acrylic acid polymers were neutralized with calcium ions, 30% to 70% of the acrylic acid polymers were neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers were not neutralized.