公开(公告)号：US20190276568A1

公开(公告)日：2019-09-12

申请号：US16344381

申请日：2017-10-24

Applicant: BASF SE

Inventor： Ferdinand Leifeld ,  Achim FESSENBECKER ,  Steffen HENKES ,  Massimiliano BORDIGNON ,  Vandana KURKAL-SIEBERT ,  Laszlo SZARVAS ,  Qing Feng TONG

IPC: C08F120/06 ,  C08F2/20 ,  C08F8/44 ,  C08F2/38 ,  C08K3/22 ,  C08K3/26 ,  C08K3/32

Abstract: An acrylic acid polymer having a weight average molecular weight Mw in the range from 3500 to 2000 g/mol and a polydispersity index Mw/Mn≤2.5, wherein 30% to 60% of the acid groups of the acrylic acid polymers have been neutralized with calcium ions, 30% to 70% of the acrylic acid polymers have been neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers have not been neutralized.