Process to prepare precipitated calcium carbonate implementing low charge acrylate a/o maleinate-containing polymer

摘要

Process to prepare a precipitated calcium carbonate (PCC) comprising the following steps:
(i) providing CaO, which is optionally partially or fully slaked (hereafter "calcium source");
(ii) providing a CO 2 -comprising gas;
(iii) contacting said calcium source of step (i) and said CO 2 -comprising gas of step (ii) in an aqueous environment in a reactor, in one or more steps;
(iv) obtaining a PCC-comprising suspension;
(v) optionally concentrating said PCC-comprising suspension of step (iv);
(vi) optionally adding dispersing additives to the suspension of step (iv) and/or (v);
(vii) optionally grinding the product of step iv, v or vi;