Aqueous hard surface cleaners based on terpenes and fatty acid derivatives

• US 10,233,412 B2
• Filed: 08/11/2017
• Issued: 03/19/2019
• Est. Priority Date: 04/24/2012
• Status: Active Grant

• Current Assignee: Stepan Company
• Original Assignee: Stepan Company
• Inventors: Brown, Aaron, Gorman, Wilma, Masters, Ronald A.
• Primary Examiner(s): Delcotto, Gregory R
• Application Number:
  US15/674,608
• Publication Number:
  US 20170342354A1
• Time in Patent Office: 585 Days
• Field of Search: 510101, 510238, 510245, 510264, 510421, 510422, 510424, 510426, 510427, 510432, 510434, 510501, 510509
• CPC Class Codes: B43K 29/05 with applicators for eradicating- or correcting-liquid
• CPC Class Codes: C11D 1/02 Anionic compounds C11D1/002, C11D1/004, C11D1/008 take precedence
• CPC Class Codes: C11D 1/38 Cationic compounds C11D1/002, C11D1/004, C11D1/008 take precedence
• CPC Class Codes: C11D 1/46 Esters of carboxylic acids with amino alcohols; Esters of amino carboxylic acids with alcohols
• CPC Class Codes: C11D 1/521 Carboxylic amides (R1-CO-NR2R3), where R1, R2 and R3 are alkyl or alkenyl groups
• CPC Class Codes: C11D 1/528 Carboxylic amides (R1-CO-NR2R3), where at least one of the chains R1, R2 or R3 is interrupted by a functional group, e.g. a -NH-, -NR-, -CO-, or -CON- group ethers C11D1/526
• CPC Class Codes: C11D 1/645 Mixtures of compounds all of which are cationic
• CPC Class Codes: C11D 1/65 Mixtures of anionic with cationic compounds
• CPC Class Codes: C11D 1/66 Non-ionic compounds C11D1/002, C11D1/004, C11D1/008 take precedence
• CPC Class Codes: C11D 1/83 Mixtures of non-ionic with anionic compounds
• CPC Class Codes: C11D 1/835 Mixtures of non-ionic with cationic compounds
• CPC Class Codes: C11D 1/94 Mixtures with anionic, cationic or non-ionic compounds
• CPC Class Codes: C11D 17/041 Compositions releasably affixed on a substrate or incorporated into a dispensing means
• CPC Class Codes: C11D 17/046 Insoluble free body dispenser
• CPC Class Codes: C11D 2111/14 Hard surfaces
• CPC Class Codes: C11D 2111/24 Mineral surfaces, e.g. stones, frescoes, plasters, walls or concretes
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/188 Terpenes
• CPC Class Codes: C11D 3/2037 Terpenes
• CPC Class Codes: C11D 3/2062 Terpene
• CPC Class Codes: C11D 3/30 : Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 3/32 : Amides; Substituted amides
• CPC Class Codes: C11D 3/50 : Perfumes

Abstract

Aqueous hard surface cleaner compositions useful for removing permanent ink are disclosed. The compositions comprise 75 to 99 wt. % of water; 0.1 to 5 wt. % of a monoterpene; 0.1 to 5 wt. % of a C₁₀-C₁₇ fatty acid derivative; and 0.1 to 5 wt. % of one or more surfactants. The fatty acid derivative is selected from N,N-dialkyl amides, N,N-dialkyl esteramines, and N,N-dialkyl amidoamines. Preferably, a base such as sodium carbonate or monoethanolamine is also included. The invention includes concentrates comprising the non-aqueous components recited above, as well as other applications for the cleaners and concentrates such as graffiti removers and permanent ink erasers. The combination of a monoterpene and certain fatty acid derivatives, especially fatty N,N-dialkyl amides, unexpectedly enables even dilute aqueous compositions to rapidly decolorize black permanent marker from hard, non-porous surfaces.

Claims

1. An aqueous hard surface cleaner consisting of:

(a) 75 to 99 wt. % of water;

(b) 0.1 to 5 wt. % of a monoterpene selected from the group consisting of limonene, α

-pinene, μ

-pinene, carene, α

-terpinene, γ

-terpinene, α

-terpineol, camphene, p-cymene, myrcene, and mixtures thereof;

(c) 0.1 to 5 wt. % of a C₁₀-C₁₄ N,N-dimethyl amide; and

(d) 0.1 to 5 wt. % of one or more surfactants selected from the group consisting of anionic, cationic, nonionic, and amphoteric surfactants;

wherein the anionic surfactant is selected from the group consisting of alkyl sulfates, alkyl ether sulfates, olefin sulfonates, α

-sulfonated alkyl esters, α

-sulfonated alkyl carboxylates, alkyl aryl sulfonates, sulfoacetates, sulfosuccinates, alkane sulfonates, and alkylphenol alkoxylate sulfates, and mixtures thereof;

(e) 0.1 to 5 wt. % of an alkali metal carbonate;

(f) optionally, 0.5 to 25 wt. % of a water-soluble organic solvent; and

(g) optionally, one or more additives selected from the group consisting of builders, buffers, abrasives, electrolytes, bleaching agents, dyes, foaming control agents, antimicrobial agents, thickeners, pigments, gloss enhancers, enzymes, silicones, and hydrotropes.

2. The cleaner of claim 1 wherein the surfactant is a mixture of an anionic surfactant and a nonionic surfactant.

3. The cleaner of claim 1 wherein the alkali metal carbonate is sodium carbonate.

4. The cleaner of claim 1 wherein the C₁₀-C₁₄ N,N-dimethyl amide is monounsaturated.

5. The cleaner of claim 4 wherein the monounsaturated C₁₀-C₁₄ N,N-dimethyl amide has at least 1 mole % of trans-Δ

⁹ unsaturation.

6. The cleaner of claim 1 wherein the C₁₀-C₁₄ N,N-dimethyl amide is a monounsaturated C₁₀-C₁₂ N,N-dimethyl amide.

7. The cleaner of claim 1 wherein the C₁₀-C₁₄ N,N-dimethyl amide has the structure:

8. A method for removing permanent ink from a hard surface, comprising applying to the hard surface the cleaner of claim 1 and removing the used cleaner from the cleaned hard surface.

13. The cleaner of claim 1 wherein the cleaner is used as a graffiti remover.

15. A permanent marker having an attached eraser that incorporates the cleaner of claim 1.

17. A correction pen having a fluid reservoir incorporating the cleaner of claim 1.

19. The cleaner of claim 1 wherein the cleaner is used as a correction fluid.

9. A dilutable hard-surface cleaner concentrate comprising:

(a) 1 to 50 wt. % of a monoterpene selected from the group consisting of limonene, α

-pinene, μ

-pinene, carene, α

-terpinene, γ

-terpinene, α

-terpineol, camphene, p-cymene, myrcene, and mixtures thereof;

(b) 1 to 50 wt. % of a C₁₀-C₁₄ N,N-dimethyl amide; and

(c) 1 to 50 wt. % of one or more surfactants selected from the group consisting of anionic, cationic, nonionic, and amphoteric surfactants;

wherein the anionic surfactant is selected from the group consisting of alkyl sulfates, alkyl ether sulfates, olefin sulfonates, α

-sulfonated alkyl esters, α

-sulfonated alkyl carboxylates, alkyl aryl sulfonates, sulfoacetates, sulfosuccinates, alkane sulfonates, and alkylphenol alkoxylate sulfates, and mixtures thereof;

(d) 0.1 to 5 wt. % of an alkali metal carbonate;

(e) optionally, 0.5 to 25 wt. % of a water-soluble organic solvent; and

(f) optionally, one or more additives selected from the group consisting of builders, buffers, abrasives, electrolytes, bleaching agents, dyes, foaming control agents, antimicrobial agents, thickeners, pigments, gloss enhancers, enzymes, silicones, and hydrotropes.

10. The concentrate of claim 9 wherein the C₁₀-C₁₄ N,N-dimethyl amide is monounsaturated.

11. The concentrate of claim 10 wherein the C₁₀-C₁₄ N,N-dimethyl amide is a monounsaturated C₁₀-C₁₂ N,N-dimethyl amide.

12. The concentrate of claim 9 wherein the C₁₀-C₁₄ N,N-dimethyl amide has the structure:

14. A graffiti remover comprising the concentrate of claim 9.

16. A permanent marker having an attached eraser that incorporates the concentrate of claim 9.

18. A correction pen having a fluid reservoir incorporating the concentrate of claim 9.

20. A correction fluid comprising the concentrate of claim 9.