Washing liquor comprising a Winsor II microemulsion and insoluble particles, and washing method

Patent metadata

Field	Value
Publication number	US-10513675-B2
Application number	US-201916528488-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Jul 9, 2014
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

The invention relates to an aqueous washing liquor in a device for cleaning soiled textile substrates, containing a plurality of water-insoluble solid particles and a liquid phase which contains a microemulsion, and to a textile washing method using said type of washing liquor.

First claim

What is claimed is:

1. A textile washing method comprising the step of contacting a soiled textile substrate in a washing machine with a washing liquor concentrate comprising:
a) a plurality of water-insoluble solid particles; and
b) a liquid phase, wherein the liquid phase comprises a microemulsion;
wherein the contacting step comprises introducing a laundry load into a washing cycle having at least two successive sub-washing cycles, and involves the following steps:
i) the laundry load to be cleaned is introduced into the laundry treatment chamber of the washing machine;
ii) the concentrate is placed into a detergent supply chamber of the washing machine, and in the first sub-washing cycle is transported into the laundry treatment chamber of the washing machine, while simultaneously forming a short liquor, wherein a microemulsion system of Winsor type 2 is formed or retained as the short liquor;
iii) an interaction of the short liquor of Winsor type 2 with the soil present in the laundry load takes place in the first sub-washing cycle, as a result of which a loosening of the fat-type and oil-type soil on the fiber is brought about;
iv) in at least one further sub-washing cycle the liquor is diluted with water and continues to be diluted with water until a long liquor is formed, wherein the soil is detached from the laundry load;
v) at the end of the last sub-washing cycle the soil together with the long liquor is transported away from the laundry treatment chamber.

2. The textile washing method according to claim 1 , wherein the microemulsion system of Winsor type 2 is not in macroscopically separated form during application but rather is introduced into the laundry treatment chamber of the machine and applied to the laundry load as an emulsion of the two phases of the microemulsion system of Winsor type 2.

3. The textile washing method according to claim 1 , wherein in the first sub-washing cycle, a weight ratio of the soiled dry textile substrate or laundry load to the short liquor of not less than 1:2, is formed.

4. The textile washing method according to claim 1 wherein a phase inversion takes place during the sub-washing cycle following the first sub-washing cycle or the further sub-washing cycles following the first sub-washing cycle, and wherein firstly a microemulsion system of Winsor type 3 and lastly of Winsor type 1 is formed.

5. The textile washing method according to claim 1 wherein at least 3 sub-washing cycles are carried out, wherein the second sub-washing cycle comprises the production of a microemulsion system of Winsor type 3 as a dilution liquor and the third sub-washing cycle comprises the washing method using the long liquor.

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Schmiedel Peter
• Dreja Michael
• Nitsch Christian
• Kessler Arnd
• Luneau Benoit
• Strey Reinhard
• Klemmer Anna
• Bastigkeit Thorsten
• Mueller-Kirschbaum Thomas
• Bode Nicole
• Spill Iwona

Classifications

• C11D17/0021 Primary

  Aqueous microemulsions · CPC title

• D06F35/006

  for washing or rinsing only · CPC title

• C11D11/0017

  Chemistry & Metallurgy · mapped topic

• D06F39/022

  in a liquid state (D06F39/024 takes precedence) · CPC title

• C11D2111/12

  Soft surfaces, e.g. textile · CPC title