Patent · US Active

Machine dishwashing method with separately metered liquid cleaning agents

US8012267B2 · kind B2 · utility

20Cited by

10References

20Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Maren Jekel · Mülheim an der Ruhr, DE
Johannes Zipfel · Amsterdam, NL
Arnd Kessler · Monheim am Rhein, DE

Key dates

Filing date	Dec 19, 2008
Grant date	Sep 6, 2011
Priority date	—
Expiry date	May 22, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D2111/44
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of machine cleaning dishes in a dishwasher, wherein over the course of a cleaning program, having a pre-rinsing operation and a cleaning operation, two liquid cleansers A and B having the following composition: A:—10 to 75 wt % of builder(s); −0.1 to 10 wt % of enzyme(s); −24.9 to 89.9 wt % of solvent; and B: −10 to 74.9 wt % of builder(s); −25 to 89.9 wt % of solvent; are metered into the wash bath at two successive times t1 and t2. The liquid cleanser A has a pH value (20° C.) of between 6 and 9 and is metered in at time t1, while the liquid cleanser B has a pH value (20° C.) of between 9 and 14 and is metered in at time t2.

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