Patent ID: 9145335
Filing Date: 2015-09-29
Classification: C04B

Abstract:
1. A process for the preparation of a one-component setting and hardening accelerator for mineral binders, comprising the steps of: a) reacting a calcium compound CV with a silicon compound SV, wherein b) addition of an acidic compound having a molecular weight of not more than 200 g/mol, wherein the acidic compound comprises nitric acid, sulfamic acid, methanesulfonic acid, formic acid, acetic acid, fumaric acid, oxalic acid, maleic acid, maleic acid anhydride, glycolic acid and/or lactic acid; wherein the acidic compound is added before and/or during, step a) and following the production of the setting and hardening accelerator, a pH value is in the range of from 7-12.