Patent · US Expired

Storable bleach mixture having improved dissolving power

US4938889A · kind A · utility

5Cited by

4References

16Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Heinz-Manfred Wilsberg · Goldkronach, DE
Rolf Puchta · Haan, DE
Jochen Jacobs · Wuppertal, DE

Key dates

Filing date	Mar 15, 1989
Grant date	Jul 3, 1990
Priority date	—
Expiry date	Mar 15, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/3902
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A granular, storable bleach mixture suitable for addition to a detergent composition or to a wash liquor comprising a mixture of (a) from 5 to 35% by weight sodium perborate, preferably as monohydrate, (b) from 5 to 30% by weight tetra-acetyl ethylene-diamine and (c) from 90 to 50% by weight of a carrier material. The latter comprises a salt optionally containing water of crystallization or urea or mixtures thereof with anhydrous sodium sulfate, wherein the salt containing water of crystallization should not undergo any phase transformation between 1.degree. C. and 45.degree. C. In addition, the mixture may contain up to 15% of detergent constituents, such as surfactant and sequestering agent. The average particle size of the individual component is from 0.1 to 0.6 mm, less than 1% by weight being larger than 1.6 mm in size.

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