Patent · US Active

Additive for hydraulically setting compositions

US9796628B2 · kind B2 · utility

1Cited by

2References

20Claims

0Family size

Assignee

CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

Torben Gädt · Traunstein, DE
Harald Grassl · Feichten, DE
Luc Nicoleau · Fleury-les-Aubrais, FR
Joachim DENGLER · Trostberg, DE
Martin Winklbauer · Burgkirchen an der Alz, DE

Key dates

Filing date	Jan 20, 2015
Grant date	Oct 24, 2017
Priority date	—
Expiry date	Jan 20, 2035

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 of at least one salt of a mono- or polyvalent metal cation and of at least one compound which is able to release an anion which forms a low-solubility salt with the metal cation, and of at least one polymeric sulphonated dispersant. The additive is suitable particularly as a slump retainer.

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