Washing of delicate textiles using peracids to disinfect the same

• US 20030045443A1
• Filed: 06/21/2002
• Published: 03/06/2003
• Est. Priority Date: 12/23/1999
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab GmbH & Co. Ohg (Ecolab, Inc.)
• Inventors: Korber, Heinz-Otto, Roth, Christian, Merz, Thomas, Meyer, Bernhard
• Granted Patent: US 6,693,069 B2
• Time in Patent Office: Days
• US Class Current: 510/302
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/30 characterised by the surfactants
• CPC Class Codes: A01N 37/02 Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
• CPC Class Codes: A01N 37/16 containing the group; Thio analogues thereof
• CPC Class Codes: A01N 59/00 Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
• CPC Class Codes: A01N 61/00 Biocides, pest repellants or attractants, or plant growth regulators containing substances of unknown or undetermined composition, e.g. substances characterised only by the mode of action
• CPC Class Codes: C11D 1/32 Protein hydrolysates; Fatty acid condensates thereof
• CPC Class Codes: C11D 3/2079 Monocarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/3418 Toluene -, xylene -, cumene -, benzene - or naphthalene sulfonates or sulfates
• CPC Class Codes: C11D 3/3945 Organic per-compounds C11D3/3902 takes precedence
• CPC Class Codes: C11D 3/3947 Liquid compositions
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions

Abstract

The invention relates to methods and agents for washing textiles while disinfecting them and treating the same with care, whereby a combination consisting of peracid and particular additional constituents is used as the disinfection constituent.

Claims

1. Use of a disinfecting component containing a combination of peracids and

a) at least one fatty acid and/or

b) at least one hydrotrope and/or

c) at least one surfactant component and/or

d) at least one complexing component for the disinfecting washing of textiles.

2. The use claimed in claim 1, characterized in that the degree of fiber damage in the disinfecting washing of textiles is less than it is where the same quantities of the corresponding peracid alone are used.

3. The use claimed in claim 1 or 2, characterized in that textiles which are sensitive to oxidative disinfectants and/or heat are subjected to a gentle disinfecting wash.

4. The use claimed in any of claims 1 to 3, characterized in that textiles which are sensitive to oxidative disinfectants and/or heat are subjected to a disinfecting wash at a temperature of 10 to 55°

C.

5. The use claimed in any of claims 1 to 4, characterized in that textiles which are sensitive to oxidative disinfectants and/or temperature contain materials selected from wool, silk, viscose, polyacrylics, polyamide, acetate and lyocell.

6. The use claimed in any of claims 1 to 5, characterized in that the disinfecting component is used together with standard speciality, color, fully-built and light-duty detergents.

7. The use claimed in any of claims 1 to 6, characterized in that the disinfecting component contains as peracid an organic compound selected from

a) the peracids or salts of peracids corresponding to general formula I:

R²—

O₂C—

(CH₂)_x—

CO₃H 

 

(I)

 

in which R² is hydrogen or an alkyl group containing 1 to 4 carbon atoms and x is a number from 1 to 4, and/or

b) phthalimidopercarboxylic acids (II) where the percarboxylic acid contains 1 to 18 carbon atoms, and/or

c) compounds corresponding to formula III;

R¹—

CO₃H 

 

(III)

 

in which R¹ is an alkyl or alkenyl group containing 1 to 18 carbon atoms.

8. The use claimed in claim 7, characterized in that

a) peracids in which R² is hydrogen or a methyl group are present as the peracids of general formula I and/or

b) pthalimidoperacids in which in the percarboxylic acid contains 1 to 8 carbon atoms are present as the peracids and/or

c) peracids with an alkyl or alkenyl group containing 1 to 12 carbon atoms are present as the peracids of general formula III.

9. The use claimed in claim 8, characterized in that one or more compounds selected from peracetic acid, perpropionic acid, peroctanoic acid, phthalimidoperhexanoic acid, phthalimidoperoctanoic acid, persuccinic acid, persuccinic acid monomethyl ester, perglutaric acid, perglutaric acid monomethyl ester, peradipic acid, peradipic acid monomethyl ester, persuccinic acid, persuccinic acid monomethyl ester are present as the peracids.

10. The use claimed in any of claims 1 to 9, characterized in that an aqueous disinfecting washing solution containing 0.001 to 2% by weight of peracid, based on the disinfecting washing solution as a whole, is produced by addition of the disinfecting component.

11. The use claimed in any of claims 1 to 10, characterized in that an aqueous disinfecting washing solution which additionally contains 0.005 to 2% by weight of hydrogen peroxide, based on the disinfecting washing solution as a whole, is produced by addition of the disinfecting component.

12. The use claimed in any of claims 1 to 11, characterized in that fatty acids containing 8 to 12 carbon atoms are present as the fatty acids a).

13. The use claimed in any of claims 1 to 12, characterized in that the hydrotrope b) is selected from the groups of sulfonates, preferably from xylene, octyl, naphthyl and alkylbenzenesulfonates, the alkyl group in the last of these containing between 6 and 16 carbon atoms.

14. The use claimed in any of claims 1 to 13, characterized in that the surfactant component c) is selected from the groups of anionic, cationic, nonionic, amphoteric surfactants, protein hydrolyzates, for example Lamepon types, alkylamine oxides, silicone compounds and phosphoric acids esters and salts thereof.

15. The use claimed in claim 14, characterized in that the surfactant component c) is a cationized protein hydrolyzate.

16. The use claimed in any of claims 1 to 15, characterized in that the disinfecting component is introduced into the disinfecting washing process as an aqueous solution, gel, emulsion, paste, dispersion, powder, granules, flakes, pearls, tablet, block or extrudate.

17. The use claimed in any of claims 1 to 16, characterized in that the disinfecting component is diluted with water, if necessary, before or during use in the disinfecting washing process.

18. The use claimed in claim 17, characterized in that the dilution factor is between 10 and 10,000.

21. A composition as claimed in claim 18 or 19, characterized in that between 1 and 20% by weight of peracid combined with

a) 0.1 to 10% by weight of fatty acid and/or

b) 0.1 to 10% of hydrotrope and/or

c) 0.1 to 10% by weight of surfactant component and/or

d) 0.1 to 10% by weight of complexing component based on the composition as a whole, are present as disinfecting components, the balance to 100% by weight consisting of water and/or other active ingredients or auxiliaries.

22. A composition as claimed in claim 21, characterized in that an ester peracid is present as the peracid and more than 35% by weight of hydrogen peroxide is additionally present.

23. The use of the composition claimed in claim 21 in the context of claims 1 to 18.

19. A textile disinfectant containing peracid combined with

a) at least one fatty acid and/or

b) at least one hydrotrope and/or

c) at least one surfactant component and/or

d) at least one complexing component as disinfecting component.

20. A wool disinfectant containing peracid combined with

a) at least one fatty acid and/or

b) at least one hydrotrope and/or

c) at least one surfactant component and/or

d) at least one complexing component as disinfecting component.

24. A washing process for the disinfecting washing of textiles in which a peracid and

a) octanoic acid and/or

b) octyl sulfonate and/or

c) a cationized protein hydrolyzate are contacted with the textiles.

25. A washing process as claimed in claim 24, characterized in that at least one peracid-containing product and a second product containing components a) and/or c) are used in the process.