Additive for masses that set hydraulically

US9802864B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christoph Hesse · Ebersberg, DE
• Manfred Bichler · Trostberg, DE
• Alexander Kraus · Evenhausen, DE
• Luc Nicoleau · Fleury-les-Aubrais, FR
• Torben Gädt · Traunstein, DE
• Martin Winklbauer · Burgkirchen an der Alz, DE

Key dates

• Filing date: Jan 27, 2014
• Grant date: Oct 31, 2017
• Expiry date: Oct 27, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/91
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to an additive which can be used as a hardening accelerator for hydraulically setting compositions, comprising a) at least one polymeric dispersant comprising structural units having anionic or anionogenic groups and structural units having polyether side chains, b) at least one sulfonic acid compound of the formula (I)in which A1 is NH2, NHMe, NMe2, N(CH2—CH2—OH)2, CH3, C2H5, CH2—CH2—OH, phenyl, or p-CH3-phenyl and Kn+ is an alkali metal cation, or one equivalent of a cation selected from Ca2+, Mg2+, Sr2+, Ba2+, Zn2+, Fe2+, Fe3+, Al3+, Mn2+, or Cu2+, and c) calcium silicate hydrate particles.