Patent · US Active

Additive for hydraulically setting compositions

US11377392B2 · kind B2 · utility

0Cited by

19References

19Claims

0Family size

Assignee

CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

Torben Gädt · Traunstein, DE
Harald Grassl · Feichten, DE
Luc Nicoleau · Fleury-les-Aubrais, FR
Alfons Smeets · Seebruck, DE

Key dates

Filing date	Jun 27, 2016
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Sep 15, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to an additive for hydraulically setting compositions comprising a colloidally disperse preparation comprising at least one salt of a polyvalent metal cation with at least one organic phosphonate and/or phosphate compound as anion and at least one polymeric dispersant comprising anionic and/or anionogenic groups and polyether side chains. The additive is especially suitable as slump retainer and for improving early strength.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.