Patent · US Active

Hardening accelerator composition

US9388077B2 · kind B2 · utility

2Cited by

27References

25Claims

0Family size

Assignee

CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

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

Key dates

Filing date	Aug 12, 2013
Grant date	Jul 12, 2016
Priority date	—
Expiry date	Aug 12, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2103/14
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention concerns a process for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, said reaction being carried out in the presence of an aqueous solution which contains a water-soluble comb polymer suitable as a plasticizer for hydraulic binders, wherein the water-soluble comb polymer is present as a copolymer which is produced by free radical polymerization in the presence of a phosphorylated monomer and a (meth)acrylic acid ester based polyether macromonomer.

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