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1. (WO2018081964) ACRYLIC ACID POLYMERS NEUTRALIZED WITH SODIUM AND CALCIUM IONS AND HAVING A NARROW MOLECULAR WEIGHT DISTRIBUTION

Pub. No.:    WO/2018/081964    International Application No.:    PCT/CN2016/104390
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Thu Nov 03 00:59:59 CET 2016
IPC: C08F 20/06
C09D 17/00
Applicants: BASF SE
SZARVAS, Laszlo
Inventors: SZARVAS, Laszlo
LEIFELD, Ferdinand
FESSENBECKER, Achim
HENKES, Steffen
BORDIGNON, Massimiliano
KURKAL-SIEBERT, Vandana
TONG, Qingfeng
Title: ACRYLIC ACID POLYMERS NEUTRALIZED WITH SODIUM AND CALCIUM IONS AND HAVING A NARROW MOLECULAR WEIGHT DISTRIBUTION
Abstract:
An acrylic acid polymer having a weight average molecular weight Mw in the range from 3500 to 12 000 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.