Patent ID: 9403988
Filing Date: 2016-08-02
CPC Classification: C01F,C01P,C09C,D21H

Claim Text:
1. Tissue paper, plastic, paint, a controlled release agent or a water treatment agent comprising a composition obtained by the process comprising the following steps: a) providing a calcium carbonate; b) providing 5 wt.-% to 50 wt.-%, based on the weight of calcium carbonate, of at least one acid having a pK c) providing 1 wt.-% to 20 wt.-%, based on the weight of calcium carbonate, of at least one agent selected from the group consisting of boric acid, citric acid, sodium dihydrogen citrate, potassium dihydrogen citrate, disodium hydrogen citrate, dipotassium hydrogen citrate, sodium dihydrogen borate, potassium dihydrogen borate, disodium hydrogen borate, dipotassium hydrogen borate, and any mixture thereof; and d) contacting the calcium carbonate of step a) with (i) the at least one acid having a pK e) optionally drying the composition obtained in step d).