Cleaning product

Abstract

A cleaning product including a spray dispenser and a cleaning composition suitable for spraying and foaming, the composition housed in the spray dispenser and includes: i) from about 5 to about 15% by weight of the composition of a surfactant system; and ii) a specific glycol ether solvent, the surfactant system and the glycol ether solvent are in a weight ratio of from about 5:1 to about 1:1.

Claims

1. A cleaning product comprising: a) a non-pressurized spray dispenser comprising a housing and a trigger spray; b) a shear thinning cleaning composition contained in the housing, wherein the composition comprises from about 5 to about 15% by weight of the composition of a surfactant system, wherein the surfactant system comprises an anionic surfactant and a co-surfactant, wherein the co-surfactant is selected from the group consisting of betaine, amine oxide, and mixtures thereof, wherein the anionic surfactant and the co-surfactant are present in a weight ratio of 4:1 to 1:1; a glycol ether solvent selected from the group consisting of glycol ethers of Formula I: R1O(R2O)nR3, Formula II: R4O(R5O)nR6 and mixtures thereof wherein R1 is a linear or branched C4, C5 or C6 alkyl or a substituted or unsubstituted phenyl, R2 is ethyl or isopropyl, R3 is hydrogen or methyl, R4 is n-propyl or isopropyl, R5 is isopropyl, R6 is hydrogen or methyl and n is 1, 2 or 3; and bicarbonate; wherein the surfactant system and the glycol ether solvent are in a weight ratio of from about 5:1 to about 1:1 and wherein the cleaning composition foams when sprayed.

2. A product according to claim 1 wherein the composition has a pH greater than 8, as measured at 10% solution in distilled water at 20 C. and a reserve alkalinity of from about 0.1 to about 1 expressed as g NAOH/100 ml of composition at a pH of 10.

3. A product according to claim 1 wherein the composition has a reserve alkalinity of from about 0.1 to about 0.5 expressed as g NAOH/100 ml of composition at a pH of 10.

4. A product according to claim 1 wherein the anionic surfactant comprises an alkyl ethoxylated sulfate surfactant.

5. A product according to claim 1 wherein the anionic surfactant comprises an alkyl ethoxylate sulfate with an average degree of ethoxylation of from about 2 to about 5.

6. A product according to claim 1 wherein the anionic surfactant comprises a branched short chain alkyl sulfate.

7. A product according to claim 1 wherein the anionic surfactant comprises 2-ethyl hexyl sulfate.

8. A product according to claim 1 wherein the composition comprises from about 1% to about 7% by weight of the composition of the glycol ether solvent.

9. A product according to claim 1 wherein the glycol ether solvent is selected from the group consisting of dipropylene glycol n-butyl ether, propyleneglycol n-butyl ether and mixtures thereof.

10. A product according to claim 1 wherein the composition has a pH of from 10 to 11.5 as measured in a 10% solution in distilled water at 20 C., a reserve alkalinity of from 0.1 to 0.3 expressed as g NAOH/100 ml of composition at a pH of 10, the composition comprising: about 4 to about 10% by weight of the composition of an alkyl ethoxylate sulfate; about 1 to about 5% by weight of the composition of amine oxide surfactant; and about 3% to about 8% by weight of dipropylene glycol n-butyl ether.

11. A product according to claim 1 wherein the composition has a pH of from about 10 to about 11.5 as measured in a 10% solution in distilled water at 20 C., a reserve alkalinity of from about 0.1 to about 0.3 expressed as g NAOH/100 ml of composition at a pH of 10, the composition comprising: about 4 to about 10% by weight of the composition of 2-ethyl hexyl sulfate; about 1 to about 5% by weight of the composition of amine oxide surfactant; and about 3% to about 8% by weight of the composition of dipropylene glycol n-butyl ether.

12. A product according to claim 1 wherein the composition further comprises a chelant.

13. A product according to claim 1 wherein the composition further comprises a builder.

14. A product according to claim 1 wherein the composition further comprises monoethanol amine.

15. A product according to claim 1 wherein the composition comprises a further solvent selected from the group consisting of C2-C4 alcohols, C2-C4 polyols, poly alkylene glycol and mixtures thereof.

16. A product according to claim 1 wherein the composition has a high shear viscosity (at 10,000 s1) of from about 1 to about 20 mPa s at 20 C. as measured using the flow curve procedure defined herein.

17. A product according to claim 1 wherein the composition has a low shear (at 100 s1) to high shear viscosity ratio of from about 10:1 to about 1.5:1 at 20 C. as measured using the flow curve procedure defined herein.

18. A method of cleaning soiled dishware using the product according claim 1, the method comprising the steps of: a) optionally pre-wetting the soiled dishware; b) spraying the cleaning composition onto the soiled dishware; c) optionally adding water to the soiled dishware during a period of time; d) optionally scrubbing the dishware; and e) rinsing the dishware.

19. A cleaning product comprising: c) a non-pressurized spray dispenser comprising a housing and a trigger spray; d) a shear thinning cleaning composition contained in the housing, wherein the composition comprises from about 5 to about 15% by weight of the composition of a surfactant system, wherein the surfactant system comprises an anionic surfactant and a co-surfactant, wherein the co-surfactant is selected from the group consisting of betaine, amine oxide, and mixtures thereof, wherein the anionic surfactant and the co-surfactant are present in a weight ratio of 4:1 to 1:1; a glycol ether solvent selected from the group consisting of glycol ethers of Formula I: R1O(R2O)nR3, Formula II: R4O(R5O)nR6 and mixtures thereof wherein R1 is a linear or branched C4, C5 or C6 alkyl or a substituted or unsubstituted phenyl, R2 is ethyl or isopropyl, R3 is hydrogen or methyl, R4 is n-propyl or isopropyl, R5 is isopropyl, R6 is hydrogen or methyl and n is 1, 2 or 3; and xanthan gum; wherein the surfactant system and the glycol ether solvent are in a weight ratio of from about 5:1 to about 1:1 and wherein the cleaning composition foams when sprayed.

Description

EXAMPLE 1

(1) The ability to solubilize and diffuse through a layer of oil has been assessed for composition comprising glycol ether solvents inside and outside of the glycol ether solvents of the product of the invention.

(2) Test Method

(3) Oil Preparation

(4) Oil preparation is carried out at ambient temperature of 21 C.+2 C. All used products should be acclimatized within this temperature range.

(5) Oil 1: A blend of vegetable based cooking oils is achieved by mixing corn oil (Supplier: VandemoorteleItem: #1001928), peanut oil (Supplier: VandemoorteleItem: #1002974) and sunflower oil (Supplier: VandemoorteleItem: #1001926) in equal weight amounts. Whilst mixing, 0.05 wt. % of red dye (Waxoline Red, red dye pigment supplied by Avecia) is added on top. Mixing is continued afterwards for 1 hour to achieve a homogeneous dye distribution over the oil sample.

(6) Oil 2: Olive oil (Supplier: BertaItem: # L5313R HO756 MI0002) is mixed with 0.05% of red dye (Waxoline Red, red dye pigment supplied by Avecia) for 1 hour to achieve a homogeneous dye distribution over the oil sample.

(7) Oil 3: Baked oil mix: the resulting Oil 1 is further mixed with 1% of black dye (Supplier: Sigma-Aldrich. Item: Sudan black B lot MKBQ9075V) for 1 hour to achieve a homogeneous dye distribution. 20 g of the resulting oil mixture is poured homogeneously distributed as a thin layer over an Pyrex glass oven tray (from Carrefour Lx1=3024 cm). The tray is oven-baked for 16 h at 135 C. After baking, the oven tray is put overnight in a humidity cabinet at 25 C. and 70% humidity level. The liquid polymerized oil fraction is then collected in a glass vial and ready for testing.

(8) Test Execution

(9) 35 gram of a water solution containing 0.15% of xanthan gum (keltrol RD from CP-kelco) is poured onto a glossy white ceramic dish plate (Supplier: IkeaItem: S.Pryle #13781 diameter 26.5 cm). Then 2.5 gram of the oil to test is delicately deposited in the middle onto the water surface using a Pasteur pipette (Supplier: VWR Item: 5 ml #612-1684) thus forming a thin disk of oil layer. The oil disk diameter shall not exceed a variation amongst replicates of more than 20% from the average value. One drop of the detergent sample to test is delicately deposited from a height of less than 5 mm on the middle of the oil disk, using a Pasteur pipette (Supplier: VWRItem: 5 ml #612-1684). The breakthrough time is the time recorded from the deposition of the solution drop to the opening of the oil disk identified by the apparition of the water layer in the middle of the oil disk. 8 replicates are required per sample (solution type and oil type) to calculate the average breakthrough time for that specific sample/oil combination. The average breakthrough time across the 3 oil systems (olive oil, blend and cooked blend) is calculated and reported for the different test compositions. The lower the breakthrough time the better the cleaning.

(10) Compositions

(11) TABLE-US-00001 Nil glycol Nil glycol ether ether solvent solvent % active by weight Reference Reference of the composition Base 1 Base 2 Water and minors To 100 parts To 100 parts (preservative, perfume, dye) Sodium Chloride 0.4 Sodium 0.1 0.1 bicarbonate Ethanol 0.34 0.34 Polypropylene 0.05 0.05 glycol MW 2000 Glycol Ether solvent Mono- 0.5 0.5 ethanolamine L-glutamic acid 1 N,N-diacetic acid, tetra sodium salt Alkyl Ethoxy 6.55 Sulfate (C24EO0.6) Alkyl Dimethyl 6.67 2.45 Amine Oxide (C12-14) Non-ionic Alkyl 1.33 Ethoxylate (C9- 11EO8) Xanthan Gum 0.1 pH (10% dilution 10.1 10.9 in demi water)

(12) Glycol Ether Solvents

(13) Glycol ether solvents have been classified according to four different formulas. Formula I and II are solvents of the product of the invention. Formula III and IV are outside the scope of the solvents of the product of the invention.
Formula I=R1O(R2O)nR3

(14) With R1=linear or branched C4, C5, C6 alkyl or phenyl; R2=ethyl or isopropyl; R3=H or CH3; n=1, 2 or 3
Formula II=R4O(R5O)nR6
With R4=n-propyl or isopropyl, R5=isopropyl; R6=H or CH3; n=1, 2 or 3
Formula III=R7O(R8O)nR9

(15) With R7=methyl, ethyl; R8=ethyl or isopropyl; R9=H or CH3; n=1, 2 or 3
Formula IV=R10O(R11O)nR12

(16) With R10=linear or iso C3; R11=ethyl; R12=H or CH3; n=1, 2 or 3

(17) Results

(18) The breakthrough time of compositions comprising 5% by weight of the composition of different glycol ether solvents has been compared.

(19) From the data in Table 1 below it is clear that a composition comprising a glycol ether solvent according to the invention (Formula I or II) has a faster oil breakthrough time compared to a composition comprising a glycol ether outside of the scope of the invention (Formula III or IV).

(20) TABLE-US-00002 TABLE 1 Impact of glycol ether solvents on Reference Base 1 formula. Breakthrough time (seconds)- Glycol Ether The lower the Test leg Formula Glycol Ether Type better 1 I Hexyl cellusolve 6 (R1 = n-C6, R2 = ethyl, n = 1, R3 = H) 2 I Hexyl carbitol (R1 = 33 n-C6, R2 = ethyl, n = 2, R3 = H) 3 I Dowanol Pph (R1 = 32 phenyl, R2 = isopropyl, n = 1, R3 = H) 4 I Dowanol EpH (R1 = 46 phenyl, R2 = ethyl, n = 1, R3 = H) 5 I Dowanol DPnB 47 (R1 = n-C4, R2 = isopropyl, n = 1, R3 = H) 6 I Dowanol DPnB 48 (R1 = n-C4, R2 = isopropyl, n = 2, R3 = H) 7 I Dowanol TPnB 63 (R1 = n-C4, R2 = isopropyl, n = 3, R3 = H) 8 II Dowanol DPnP 62 (R4 = n-C3, R5 = isopropyl, n = 2, R6 = H) 9 II Dowanol PnP (R4 = 73 n-C3, R5 = isopropyl, n = 1, R6 = H) 10 I Butyl cellusolve 73 (R1 = n-C4, R2 = ethyl, n = 1, R3 = H) 11 I Butyl carbitol (R1 = 91 n-C4, R2 = ethyl, n = 2, R3 = H) 12 I Butoxytriglycol 96 (R1 = n-C4, R2 = ethyl, n = 3, R3 = H) NIL SOLVENT n.a nil glycol ether 102 REFERENCE solvent BASE 1 13 III Dowanol Pm (R7 = 106 methyl, R8 = isopropyl, n = 1, R9 = H) 14 IV Propyl cellusolve 114 (R10 = n-C3, R11 = ethyl, n = 1, R12 = H) 15 III Dowanol DPm 128 (R7 = methyl, R8 = isopropyl, n = 2, R9 = H) 16 III Proglyde DMM 138 (R7 = methyl, R8 = isopropyl, n = 2, R9 = CH3) 17 III Carbitol (R7 = 140 Ethyl, R8 = ethyl, n = 2, R9 = H)

(21) A selection of formula I glycol ether solvents has also been tested on a second nil glycol ether composition (Reference Base 2) with totally different type of surfactant chassis. From the data in Table 2 it is clear that the glycol ether solvent learning is transferable across multiple surfactant chassis.

(22) TABLE-US-00003 TABLE 2 Impact of glycol ether solvents on Reference Base 2 formula. Breakthrough time (seconds)- Glycol Ether Glycol Ether The lower the Test leg Formula Type better 1 I Dowanol EpH 28 (R1 = phenyl, R2 = ethyl, n = 1, R3 = H) 2 I Hexyl cellusolve 33 (R1 = n-C6, 2 = ethyl, n = 1, R3 = H) 3 I Dowanol DPnB 66 (R1 = n-C4, R2 = isopropyl, n = 2, R3 = H) 4 I Hexyl carbitol 82 (R1 = n-C6, R2 = ethyl, n = 2, R3 = H) NIL SOLVENT n.a nil glycol ether 112 REFERENCE solvent BASE 2

(23) The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as 40 mm is intended to mean about 40 mm

(24) Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.

(25) While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.