Viscoelastic amphoteric surfactant based cleaning compositions

Patent metadata

Field	Value
Publication number	US-9765284-B2
Application number	US-201514688005-A
Country	US
Kind code	B2
Filing date	Apr 16, 2015
Priority date	Nov 28, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

Alkaline or neutral viscoelastic cleaning compositions are disclosed which use non polymer thickening agents. According to the invention, cleaning compositions have been developed using viscoelastic surfactants in a neutral, acidic or alkaline cleaning formulations. These provide the dual benefit of thickening as well as an additional cleaning, thereby improving performance. Applicants have also identified several pseudo linking agents which when, used with viscoelastic surfactants provide viscoelasticity in alkaline cleaning compositions.

First claim

What is claimed is:

1. A neutral or alkaline viscoelastic cleaning composition comprising:
(a) a source of alkalinity,
(b) a non polymer viscoelastic surfactant having the following formula:

wherein R 1 represents a hydrophobic moiety of alkyl, alkylarylalkyl, alkoxyalkyl, alkylaminoalkyl and alkylamidoalkyl, wherein alkyl represents a group that contains from about 16 to about 22 carbon atoms which may be branched or straight chained and which may be saturated or unsaturated;
R 2 is an aliphatic chain having from 1 to about 30 atoms in which the aliphatic group can be branched or straight chained, saturated or unsaturated; and
R4 is a hydrocarbyl radical (e.g. alkylene) with chain length 1 to 4;
(c) a pseudo linker selected from the group consisting of:
i) a salt with a multiply charged cation selected from the group consisting of MgSO4, Mg acetate, and Al sulfate;
ii) an alkali metal salt selected from the group consisting of an alkali meta carbonate, silicate, phosphonate, sulfate, borate, neutralized ethylenediaminetetraacetic add, neutralized diethylene triamine pentaacetic add, sodium tripolyphosphate, neutralized aminotris(methylenephsophonic add), neutralized 1-hydroxyethane 1,1-disphosphonic add, neutralized 2-phosphonobutane-1,2,4-tricarboxylic add, and/or combinations thereof;
iii) an anionic surfactant selected from the group consisting of: a linear C10-C14 alkyl benzene sultanate (LAS), a branched C10-C14 alkyl benzene sulfonate (ABS), a tallow alkyl sulfate, a coconut alkyl glyceryl ether sulfonate, a sulfated condensation product of mixed C10-C18 tallow alcohols with from about 1 to about 14 moles of ethylene oxide, a mixture of higher fatty acids containing from 10 to 18 carbon atoms, neutralized diphenyloxide disulfonic add, sodium xylene sulfonate, NaLAS, NaLES; or
iv) a cationic surfactant,
wherein said pseudo linker is present in a ratio greater than 1:1 of active percent by weight of linker to active percent by weight of non-polymer viscoelastic surfactant.

2. The pseudo linker of claim 1 wherein said pseudo linker is a salt with a multiply charged cation.

3. The pseudo linker of claim 1 wherein said salt is an alkali metal salt.

4. The pseudo linker for claim 1 wherein said alkali metal salt is an alkali metal carbonate, silicate, phosphonate, sulfate, borate and/or mixtures thereof.

5. The pseudo linker of claim 1 wherein said alkali metal salt or salt with a multiply charged cation is MgSO4, Mg acetate, Al sulfate, neutralized Ethylenediaminetetraacetic acid, neutralized Diethylene triamine pentaacetic acid, sodium tripolyphosphate, neutralized amino tris(methylenephosphonic acid), neutralized 1-hydroxyethane 1,1-diphosphonic acid, and neutralized 2-phosphonobutane-1,2,4-tricarboxylic acid.

6. The pseudo linker of claim 1 wherein said pseudo linker is NaLAS, NaLES, neutralized diphenyloxide disulfonic acid, and/or sodium xylene sulfonate.

7. The pseudo linker of claim 1 wherein said pseudo linker is a cationic surfactant.

8. The pseudo linker of claim 7 wherein said cationic surfactant is a quaternary ammonium salt.

9. The pseudo linker of claim 8 wherein said quaternary ammonium salt is an alkylquatemary ammonium chloride or a naphthylene-substituted quaternary ammonium chloride.

10. The composition of claim 1 wherein said viscoelastic surfactant is present in an amount of from about 0.1 wt. % to about 2 wt. % of pseudo linker.

11. The composition of claim 1 wherein said pseudo linker is present in an amount from about 0.2 wt. % to about 5% by weight of said composition.

12. A method of cleaning an object comprising:
contacting the object with a viscoelastic cleaning composition according to claim 1 for a predetermined time; and thereafter, rinsing the cleaning composition from the object so that the cleaning composition and any soils or debris are washed away.

13. The method of claim 12 wherein said object is a pipe or vessel in a food processing plant, wares, laundry, an oven, a grill, or a floor, a carpet, a medical device.

14. The method of claim 12 wherein said composition is provided in a concentrate.

15. The method of claim 14 further comprising the step of:
diluting said concentrate.

16. The method of claim 12 wherein said step of contacting said object is by spraying said composition.

Assignees

• Ecolab Usa Inc

Inventors

• Man Victor Fuk-Pong
• Denoma Michael Charles
• Killeen Yvonne Marie
• Viall Susan Maloney

Classifications

• C11D3/06

  Phosphates, including polyphosphates · CPC title

• C11D1/94

  Mixtures with anionic, cationic or non-ionic compounds · CPC title

• C11D3/361

  Phosphonates, phosphinates or phosphonites · CPC title

• C11D3/044

  Hydroxides or bases · CPC title

• C11D1/75

  Amino oxides · CPC title