Patent · US Expired

Method for retarding plaster setting and plaster preparation

US7455728B2 · kind B2 · utility

28Cited by

4References

4Claims

0Family size

Assignee

BK GIULINI GMBH · DE

Inventors

Sabine Lösch · Hemsbach, DE
Thomas Staffel · Grünstadt, DE

Key dates

Filing date	Aug 12, 2005
Grant date	Nov 25, 2008
Priority date	—
Expiry date	Aug 12, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B28/14
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for retarding plaster setting and plaster preparations, relies upon a composition including a. tartaric acid in an amount of at least 0.01 to 1.0 weight % (based on plaster amount); b. sodium trimetaphosphate in an amount of 0.05 to 0.5 weight %, (plaster amount basis); and optionally c. sodium polyphosphate with an average chain length of at least 4 to 50 phosphate units.

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