Color-Safe Detergent or Cleaning Agent having Optical Brightener

• US 20100144579A1
• Filed: 02/08/2010
• Published: 06/10/2010
• Est. Priority Date: 08/08/2007
• Status: Abandoned Application

• Current Assignee: Henkel AG & Co KGaA
• Original Assignee: Henkel AG & Co KGaA
• Inventors: Võlkel, Theodor, Schymitzek, Tatiana, Schümann, Sabine, Janzen, Lars
• Application Number:
  US12/701,663
• Publication Number:
  US 20100144579A1
• Time in Patent Office: Days
• US Class Current: 510/299
• CPC Class Codes: C11D 3/0021 Dye-stain or dye-transfer inhibiting compositions
• CPC Class Codes: C11D 3/3776 Heterocyclic compounds, e.g. lactam
• CPC Class Codes: C11D 3/3792 Amine oxide containing polymers
• CPC Class Codes: C11D 3/42 Brightening agents ; Blueing agents

Abstract

The invention relates to a shelf-stable aqueous detergent or cleaning agent simultaneously comprising an optical brightener and a color transfer inhibitor. The detergent or cleaning agent has a pH value in the neutral range in order to stabilize both ingredients. The invention further relates to a method for producing such a liquid detergent or cleaning agent, and to the use thereof.

Claims

1. Aqueous washing or cleaning agent comprising:

an optical brightener,

a color transfer inhibitor, and

one or more surfactant(s),

wherein the pH of the agent is in a neutral range of 6.5 to 7.5.

2. Washing or cleaning agent according to claim 1 wherein the pH of the agent is in the range 6.8 to 7.2.

3. Washing or cleaning agent according to claim 1 wherein the agent contains more than 3 wt. % synthetic anionic surfactant.

4. Washing or cleaning agent according to claim 3 wherein the synthetic anionic surfactant is chosen from alkylbenzene sulfonates, alkane sulfonates, olefin sulfonates, methyl ester sulfonates, alkyl sulfates, alkenyl sulfates, alkyl ether sulfates, alkenyl ether sulfates and mixtures thereof.

5. Washing or cleaning agent according to claim 1 further comprising no more than 2 wt. % fatty acid soap.

6. Washing or cleaning agent according to claim 5 wherein the agent is substantially free of fatty acid soap.

7. Washing or cleaning agent according to claim 1, wherein the optical brightener is chosen from distyrylbiphenyls, stilbenes, 4,4-diamino-2,2′

-stilbene disulfonic acids, coumarins, dihydroquinolinones, 1,3-diarylpyrazolines, naphthalic acid imides, benzoxazole systems, benzisoxazole systems, benzimidazole systems, heterocycle-substituted pyrene derivatives and mixtures thereof.

8. Washing or cleaning agent according to claim 7 wherein the optical brightener is chosen from disodium-4,4′

-bis-(2-morpholino-4-anilino-s-triazin-6-ylamino)stilbene disulfonate, disodium-2,2′

-bis-(phenyl-styryl)disulfonate, 4,4′

-bis[(4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl)amino]stilbene-2,2′

-disulfonic acid, hexasodium-2,2′

-[vinylene bis[(3-sulfonato-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazin-4,2-diyl]imino]]bis-(benzene-1,4-disulfonate), 2,2′

-(2,5-thiophenediyl)bis[5-1,1-dimethylethyl)benzoxazole, 2,5-bis(benzoxazole-2-yl)thiophene and mixtures thereof.

9. Washing or cleaning agent according to claim 1, wherein the color transfer inhibitor is chosen from polyvinyl pyrrolidone (PVP), polyvinylimidazole (PVI), copolymers of vinyl pyrrolidone and vinylimidazole (PVP/PVI), polyvinylpyridine-N oxide, poly-N-carboxymethyl-4-vinylpyridium chloride and mixtures thereof.

10. Washing or cleaning agent according to claim 1, wherein the optical brightener is present in an amount of 0.001 to 0.25 wt. %, based on total weight of the washing and cleaning agent.

11. Washing or cleaning agent according to claim 1, wherein the color transfer inhibitor is present in an amount of 0.02 to 0.6 wt. %, based on total weight of the washing and cleaning agent.

12. Process for manufacturing an aqueous washing or cleaning agent comprises:

preparing a solution of water and one or more surfactants,

adding an optical brightener to the solution,

adding a color transfer inhibitor to the solution at a different time from the addition of the optical brightener,

adding one or more additional washing or cleaning agents ingredients to the solution, and

adjusting the pH of the agent to a neutral value of 6.5 to 7.5.

13. Process according to claim 12, wherein at least two additional ingredients of the washing or cleaning agent are added between the addition of the optical brightener and the color transfer inhibitor.