Use of nanoscale particles for improving dirt removal

• US 20060009370A1
• Filed: 09/16/2005
• Published: 01/12/2006
• Est. Priority Date: 05/04/2000
• Status: Abandoned Application

• Current Assignee: Horst-Dieter Speckmann, Ilona Lange, Josef Penninger, Lars Zuechner
• Original Assignee: Horst-Dieter Speckmann, Ilona Lange, Josef Penninger, Lars Zuechner
• Inventors: Speckmann, Horst-Dieter, Penninger, Josef, Lange, Ilona, Zuechner, Lars
• Application Number:
  US11/228,977
• Publication Number:
  US 20060009370A1
• Time in Patent Office: Days
• US Class Current: 510/507
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C01P 2004/64 Nanometer sized, i.e. from 1-100 nanometer
• CPC Class Codes: C09C 1/3063 Treatment with low-molecular organic compounds
• CPC Class Codes: C11D 17/06 Powder; Flakes; Free-flowing mixtures; Sheets
• CPC Class Codes: C11D 3/0036 Soil deposition preventing compositions; Antiredeposition agents
• CPC Class Codes: C11D 3/12 Water-insoluble compounds
• CPC Class Codes: C11D 3/1213 Oxides or hydroxides, e.g. Al2O3, TiO2, CaO or Ca(OH)2
• CPC Class Codes: C11D 3/124 Silicon containing, e.g. silica, silex, quartz or glass beads
• CPC Class Codes: C11D 3/1253 Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
• CPC Class Codes: D06M 11/44 Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
• CPC Class Codes: D06M 11/45 Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic Table; Aluminates
• CPC Class Codes: D06M 11/46 Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
• CPC Class Codes: D06M 11/49 Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic Table; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
• CPC Class Codes: D06M 11/79 with silicon dioxide, silicic acids or their salts
• CPC Class Codes: D06M 23/08 Processes in which the treating agent is applied in powder or granular form adhesives for multi-layer textile fabrics D06M17/00
• CPC Class Codes: D06M 2400/02 Treating compositions in the form of solgel or aerogel

Abstract

Soil is removed from cotton and/or a cotton/wool blend material and the resoilability of the material is reduced by a process which comprises contacting the material with a composition comprising nanoscale particles having a particle size of from 5 to 500 nm wherein the particles are comprised of of precipitated silicas, aerogels, xerogels, Mg(OH)₂, boehmite (Al(O)OH), ZrO₂, ZnO, CeO₂, Fe₂O₃, Fe₃O₄, SiO₂, TiN, hydroxy.apatite, bentoite, hectorite, SiO₂:CeO₂, SnO₂, In₂O₃:SnO₂, MgAl₂O₄, HfO₂, SiO₂ Sols, Al₂O₃ sols, TiO₂ sols, and mixtures thereof and a hydrophilizing agent selected from the group consisting of ethanol, n- or i-propanol, butanols, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, propylene glycol methyl, ethyl or propyl ether, dipropylene glycol monomethyl or monoethyl ether, diisopropylene glycol monomethyl or monoethyl ether, methoxy, ethoxy or butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, alcohols, more particularly C_1-4 alkanols, glycols and polyols and polyethylene glycol liquid at room temperature, carboxylic acid esters and mixtures thereof.

Claims

1. A process comprising contacting a cotton and/or a cotton/wool blend material with a composition comprising nanoscale particles having a particle size of from 5 to 500 nm wherein the particles are comprised of of precipitated silicas, aerogels, xerogels, Mg(OH)₂, boehmite (Al(O)OH), ZrO₂, ZnO, CeO₂, Fe₂O₃, Fe₃O₄, SiO₂, TiN, hydroxy.apatite, bentoite, hectorite, SiO₂:

CeO₂, SnO₂, In₂O₃;

SnO₂, MgAl₂O₄, HfO₂, SiO₂ Sols, Al₂O₃ sols, TiO₂ sols, and mixtures thereof and a hydrophilizing agent selected from the group consisting of ethanol, n- or i-propanol, butanols, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, propylene glycol methyl, ethyl or propyl ether, dipropylene glycol monomethyl or monoethyl ether, diisopropylene glycol monomethyl or monoethyl ether, methoxy, ethoxy or butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, alcohols, more particularly C_1-4 alkanols, glycols and polyols and polyethylene glycol liquid at room temperature, carboxylic acid esters and mixtures thereof whereby the soil is removed from the material and the resoilability of the material is reduced.

2. The process of claim 1, wherein the particle size is from 5 to 250 nm.

3. The process of claim 1, wherein the particles are present in the composition in a quantity of 0.01 to 35% by weight, based on the final composition.

4. The process of claim 1, wherein a cotton and/or a cotton/wool blend material is contacted in a finishing, laundering, pretreatment or after-treatment process.

5. The process of claim 3, wherein the amount of the nanoscale particles is from 0.01% to 20% by weight.

6. The process of claim 5, wherein the amount of the nanoscale particles is from 0.5% to 10% by weight.

7. The process of claim 4, wherein the pH of the finishing, laundering, pretreatment or after-treatment composition is from 6 to 12.

8. The process of claim 7, wherein the pH is from 7 to 10.

9. The process of claim 1, wherein the composition is in the form of a liquid, a gel or a solid.

10. The process of claim 1, wherein the composition is further comprised of a nonionic, anionic, amphoteric, cationic surfactant or mixtures thereof.

11. The process of claim 10, wherein the amount of the surfactant is from 0.1 to 50% by weight.

12. The process of claim 11, wherein the amount of the surfactant is from 0.1 to 35% by weight.

13. The process of claim 12, wherein the amount of the surfactant is from 0.1 to 15% by weight.

14. The process of claim 1, wherein the composition is further comprised of builders selected from the group consisting of zeolites, silicates, carbonates, phosphates, and organic builders and co-builders.

15. The process of claim 14, wherein the organic cobuilders are selected from the group consisting of polycarboxylates/polycarboxylic acids, polymeric polycarboxylates, aspartic acid, polyacetals, dextrins, oxydisuccinates and other derivatives of disuccinates, acetylated hydrocarboxylic acids and salts thereof, and phosphonates.

16. The process of claim 1, wherein the composition is further comprised of enzymes, bleaching agents, bleach activators, complexing agents, redeposition inhibitors, foam inhibitors, inorganic salts, solvents, pH adjusters, perfumes, perfume carriers, fluorescers, dyes, hydrotropes, silicone oils, other soil release compounds, optical brighteners, discoloration inhibitors, shrinkage inhibitors, anti-crease agents, dye transfer inhibitors, antimicrobial agents, germicides, fungicides, antioxidants, corrosion inhibitors, antistatic agents, ironing aids, waterproofing and impregnating agents, swelling and non-slip agents, UV absorbers and mixtures thereof.