Reduced residue hard surface cleaner

• US 5,468,423 A
• Filed: 10/08/1993
• Issued: 11/21/1995
• Est. Priority Date: 02/07/1992
• Status: Expired due to Term

• Current Assignee: Clorox Company
• Original Assignee: Clorox Company
• Inventors: Rebelo do Couto, Fernando J., Garabedian, Aram Jr., Mills, Scott C., Choy, Clement K., Sibert, William P.
• Primary Examiner(s): Lieberman, Paul
• Assistant Examiner(s): Tierney, Michael
• Application Number:
  US08/134,348
• Time in Patent Office: 774 Days
• Field of Search: 252/153, 252/173, 252/547, 252/542, 252/546, 252/DIG. 10, 134/42
• US Class Current: 510/423
• CPC Class Codes: C11D 1/146 Sulfuric acid esters
• CPC Class Codes: C11D 1/58 Heterocyclic compounds
• CPC Class Codes: C11D 1/72 Ethers of polyoxyalkylene glycols
• CPC Class Codes: C11D 1/75 Amino oxides
• CPC Class Codes: C11D 1/825 Mixtures of compounds all of which are non-ionic
• CPC Class Codes: C11D 1/94 Mixtures with anionic, cationic or non-ionic compounds
• CPC Class Codes: C11D 3/044 Hydroxides or bases
• CPC Class Codes: C11D 3/30 Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 3/32 Amides; Substituted amides
• CPC Class Codes: C11D 3/323 urea or derivatives thereof
• CPC Class Codes: C11D 3/33 Amino carboxylic acids
• CPC Class Codes: C11D 3/43 Solvents

Abstract

The invention provides an aqueous, hard surface cleaner with significantly improved residue removal and substantially reduced filming/streaking, said cleaner comprising:

(a) an effective amount of a solvent selected from C_1-6 alkanol, C_3-24 alkylene glycol ether, and mixtures thereof;

(b) an effective amount of at least one nonionic surfactant;

(c) an effective amount of a buffering system which comprises a nitrogenous buffer selected from the group consisting of:

ammonium or alkaline earth carbamates, guanidine derivatives, alkoxylalkylamines and alkyleneamines; and

(d) the remainder as substantially all water.

Claims

1. An aqueous, hard surface cleaner with significantly improved residue removal and substantially reduced filming/streaking, said cleaner consisting essentially of

(a) about 1-50% of a solvent selected from C_1-6 alkanol, C_3-24 alkylene glycol ether, and mixtures thereof;

(b) about 0.5-10% of a nonionic surfactant;

(c) about 0.01-2% of a buffering system which comprises a nitrogenous buffer selected from the group consisting of;

ammonium or alkaline earth carbamates; and

(d) the remainder as substantially all water.

2. The hard surface cleaner of claim 1 wherein said solvent is an alkanol which is selected from the group consisting of methanol, ethanol, n-propanol, isopropanol, butanol, pentanol, hexanol, their various positional isomers, and mixtures of the foregoing.

3. The hard surface cleaner of claim 1 wherein said solvent is an alkylene glycol ether which is selected from the group consisting of ethylene glycol monobutyl ether, ethylene glycol monopropyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, and mixtures thereof.

4. The hard surface cleaner of claim 3 wherein said solvent is ethylene glycol monobutyl ether.

5. The hard surface cleaner of claim 1 wherein said surfactant further comprises a mixture of amine oxide and ethoxylated alcohol surfactants, said amine oxide having the general configuration:

##STR5## wherein R is C_6-24 alkyl, and R'"'"' and R" are both C_1-4 alkyl, although R'"'"' and R" do not have to be equal.

6. The hard surface cleaner of claim 1 wherein said buffer is ammonium carbamate.

7. The hard surface cleaner of claim 6 wherein said buffer further includes an ammonium hydroxide.

13. A method of cleaning soil, without substantial residue remaining, from a hard surface comprising applying the cleaner of claim 1 to said soil and removing said soil and said cleaner.

8. An aqueous, hard surface cleaner consisting essentially of:

(a) about 1-50% of a solvent selected from C_1-6 alkanol, C_3-24 alkylene glycol ether, terpene hydrocarbons, and mixtures thereof;

(b) about 0.5-10% of at least one nonionic surfactant;

(c) about 0.01-2% of a buffering system which comprises a nitrogenous buffer selected from the group consisting of;

ammonium or alkaline earth carbamates; and

(d) the remainder as substantially all water.

9. The hard surface cleaner of claim 8 further comprising a hydrotrope.

10. The hard surface cleaner of claim 9 wherein the nonionic surfactant is a semi-polar nonionic surfactant.

11. The hard surface cleaner of claim 10 wherein the semi-polar nonionic surfactant is a trialkylamine oxide and the hydrotrope is a C_1-4 alkylaryl sulfonate, said trialkylamine oxide having the general configuration:

##STR6## wherein R is C_6-24 alkyl, and R'"'"' and R" are both C_1-4 alkyl, although R'"'"' and R" do not have to be equal.

12. The hard surface cleaner of claim 10 wherein the nonionic surfactant additionally comprises a C_6-20 alkyl-2-pyrrolidone.