JP2002526639A - Cleaning with short-chain surfactants - Google Patents

Abstract

  (57) [Summary] A liquid cleaning composition containing an anionic surfactant system comprising at least one short-chain anionic surfactant and a long-chain anionic surfactant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] Technical Field The present invention relates to cleaning compositions containing an anionic surfactant system. The compositions of the present invention are not limited to any particular cleaning operation, but are particularly useful as hard surface cleansers, for example, for use on tile walls, countertops, floors, and the like. Compositions containing hypochlorite bleach are used in baths,
Soap-scum associated with shower dividers and bathroom sinks
It is particularly useful for removing kitchen and bathroom debris, including types of soils.

[0002] If we consider the background superficially invention, the formulation of various types of cleaning compositions, various detersive surfactants, detersive bleaches and various detersive adjuncts, known in the art It will be apparent that it is a matter of routinely selecting from a wide variety of such materials and combining them to achieve any desired level of cleaning performance. However, further examination has shown that this is not the case where particularly good cleaning is desired. Various bleaching agents can be used for cleaning, but may be incompatible with various surfactants.

[0003] The formulation of excellent cleaning products for use in kitchens and bathrooms is such that kitchen soil tends to carry the burden of greasy and protein-based materials and bathroom soil tends to carry the burden of "soap debris" material. As long as you tend to carry a special challenge.

[0004] The present invention is directed to cleaning compositions containing anionic surfactant systems. A related prior art is WO 94/10272, which describes a cleaning composition containing a mixture of short-chain and long-chain surfactants. The surfactant described in WO94 / 10272 is linear. Short chain surfactants are preferably anionic, while long chain surfactants are preferably amphoteric (amine oxide)
It is. EP 812 904 describes a cleaning composition comprising a surfactant system containing a short-chain surfactant and a long-chain surfactant. Preferred surfactants are anionic, having no oxidation-sensitive functional groups.

According to the present invention, it has been found that a surfactant system containing at least two anionic surfactants can provide additional cleaning benefits. The anionic surfactants selected for use in such systems are short-chain linear anionic surfactants and long-chain branched anionic surfactants. This system provides improved cleaning performance, especially for greasy or greasy soils.

SUMMARY OF THE INVENTION The present invention is directed to a cleaning composition comprising a surfactant system of at least one short-chain linear anionic surfactant and a long-chain branched anionic surfactant. The present invention also provides a surface cleaning method using the above composition.

[0007] DETAILED DESCRIPTION OF THE INVENTION The present invention requires at least one short-chain linear anionic surfactant and branched anionic surfactants long chain. The short-chain linear surfactant (hereinafter abbreviated as SLS) can be selected from sulfate, sulfonate, alkoxylated sulfate, and phosphate. When the SLS is an alkoxylated sulfate, the alkoxylation can be propoxylation, but is preferably ethoxylation. SLS has from 5 to 9, preferably from 7 to 9, carbon atoms.

[0008] Preferred SLS are C ₅ -C ₉ alkyl sulfates and C ₅ -C ₉ alkyl sulfonates. A preferred SLS is Albright and under the trade name Empimin LN
A is a C ₇ -C ₉ sulfates available from wilson.

[0009] A long-chain branched anionic surfactant (hereinafter abbreviated as LBS) has a carbon skeleton, at least one branching group, and an anionic group. 10-16 carbon skeleton
, More preferably 10 to 14, most preferably 11 to 13 carbon atoms.
The carbon skeleton is preferably a saturated alkyl group, and may be substituted. The branching group is also preferably a saturated alkyl group, and may be substituted. When substituted, preferred substituents include an alkoxyl group or an anionic group. The branching group has 1 to 13, more preferably 1 to 4 carbon atoms, most preferably methyl. The anionic group is selected from the group consisting of sulfates, sulfonates, alkoxylated sulfates, phosphates, or mixtures thereof, as described above. Where the LBS is an alkoxylated sulfate, the alkoxylation can be propoxylation, but is preferably ethoxylation. A particularly preferred LBS is based on Isalchem 123, which is
Available from Albright and Wilson. Isalcem 123 is a carbon skeleton having 11 to 12 carbon atoms and a substituted methyl group in which the substituent is an anionic group.
Contains two branching groups. This material has the formula: CH ₂ — (CH ₂ ) _m —CH (CH ₂ R) — (CH ₂ ) _n —CH ₃ (wherein n and m are independently 0-9, and n + m is 8-9 And R is SO ₄ , PO ₄ or SO ₃ ).

In another aspect of the present invention, the surfactant system comprises, in addition to SLS and LBS,
It contains a short-chain anionic surfactant (hereinafter referred to as SBS). Suitable SBS
Examples include sulfates, sulfonates and phosphates. Preferred S
BS is a short-chain branched sulfate. If SBS is present, 2-ethyl-hexyl sulfate is most preferred, which is available under the trade name Empicol 0585 / A under Alb
Available from right and Wilson.

[0011] The anionic surfactant system of the present invention comprises preferably 0.1% of the cleaning composition.
% By weight, more preferably from 0.5% to 10%, most preferably from 1% to 6% by weight.

A typical ratio of SLS to LBS is 30: 1 to 1: 3, more preferably 10:
1-1: 2, most preferably 3: 1 to 1: 1. When SBS is present, the ratio of SLB and LBS to SBS is 50: 1 to 1:50, more preferably 10: 1 to 1:10.

[0013] All percentages, ratios and ratios are herein by weight unless otherwise specified. All references are incorporated herein by reference.

Bleach A preferred cleaning composition of the present invention contains a bleach. More preferably, the composition contains a hypochlorite bleach which is available as a standard aqueous solution and at pH 12-13. When used, typical levels of hypochlorite in the composition are from 0.5% to 2.5% by weight of the composition (or at most 3% as the most stable surfactant amount and ratio). Will.

Thickeners The compositions of the present invention can be prepared with or without a thickener, if desired. It is preferred that a thickener be present to promote adhesion of the composition to the surface to be cleaned. Although various thickeners can be used, it is preferred to use a polycarboxylate thickener for stability reasons. Preferred polycarboxylate thickeners are cross-linked polyacrylic acid thickeners. These thickeners are particularly preferred when the composition additionally contains hypochlorite bleach. One such thickener is available under the POLYGEL DR trade name.
Available from 3-V Chemical Corp. or from BF Goodrich under the trade name Carbopol ETD2691. This thickener is an anionic carboxyvinyl polymer, which is in the form of a fine white powder that after neutralization is completely or partially neutralized with alkali to form various solutions or gels that are miscible with the electrolyte. It is. These various solutions were observed to be stable to hypochlorite bleach, especially in the presence of sodium benzoate stabilizer. When used, typical use levels of polymeric thickeners range from 1% to 10%, more preferably 0.5% by weight of the composition.
-5%, most preferably 0.7-2% by weight.

Other thickeners useful with and without hypochlorite include clays, especially bentonite, hectorite or other montmorillonite clays. Commercially available clays suitable for use here include HECTABRITE DP, MAGNABRITE HV
, POLARGEL HV, VOLCLAY NF-BC, LAPONITE XLS, BERNTONE EW and GELWHITE
There is H-NF. A typical use level for achieving thickening is at least one level of the composition.
. 0%, ranging from 1.0% to 2.5%.

The viscosity of the thickened solution is 25 ° C., at a shear rate of 10-100 s ⁻¹ ,
When measured using a Carrimed rheometer, it is preferably in the range of 10 to 4000 cps, more preferably 50 to 1000 cps, and most preferably 100 to 550 cps.

Fluid Carrier The compositions of the present invention will contain from 85% to 95% by weight of a fluid carrier, preferably water. Water / alcohol (eg, ethanol, isopropanol)
Mixtures can also be used for liquid formulations that do not contain chlorine bleach.

Optional Auxiliary Materials The compositions of the present invention can contain various optional ingredients, such as bleach,
Additional surfactants, fatty acids, radical scavengers, antimicrobial compounds, builders, chelating agents, buffers, bactericides, solvents, enzymes, hydrotropes, colorants, bleach activators,
A stain stopping agent, a dye transfer agent, a fluorescent agent, an anti-dust agent, a dispersant, a dye transfer inhibitor, a pigment and a dye.

A highly preferred optional ingredient in the present invention is a hypochlorite bleach, preferably an alkali metal hypochlorite. Advantageously, the compositions of the present invention are stable in the presence of the bleach. Alkali metal hypochlorite is preferred, but other hypochlorite compounds can be used and can be selected from calcium and magnesium hypochlorite. The preferred alkali metal hypochlorite for use herein is sodium hypochlorite. If desired, compounds that improve the stability of the bleach, such as periodic acid, can be added to the composition.
The composition of the present invention contains a hypochlorite bleach such that the content of active chlorine in the composition is from 0.1% to 4% by weight, preferably from 0.5% to 2% by weight. Can be.

Another optional component of the present invention is an alkali metal salt of a C ₈ -C ₁₈ fatty acid. Such salts are used as suds suppressors. Suds suppressors suitable for use herein, C ₈ ~
It may be a C ₁₈ fatty acid, preferably a fully saturated, preferably sodium, potassium or lithium salt, more preferably a sodium salt. Examples of suitable fatty acids are those widely available in the art. Other suitable suds suppressors, there are alkoxylated capped alcohols C ₁₀ -C _18. However, the suds suppressor is a mixture of fatty acids, preferably coconut fatty acids (eg, Unic
Prifac 5900 available from hem) and alkoxylated capped alcohols, preferably ethoxybutoxymethyl ether (eg, Plurafa available from BASF)
c Most preferably LF231). The compositions of the present invention contain from 0.1% to 2%, preferably less than 0.6%, by weight of the composition, of fatty acids.

Another optional component of the present invention is a radical scavenger. This radical scavenger is used as a stabilizer. Radical scavengers suitable for use herein are aromatic molecules having a carboxyl ring substitute. Suitable examples of radical scavengers used herein include meta- and para-chlorobenzoic acid, benzoic acid, meta-, para- and ortho-methoxybenzoic acid, metanitrobenzoic acid, parabromobenzoic acid, salicylic acid, 5 -Sulfosalicylic acid, 3,5-dimethylsalicylic acid and paratoluic acid. Of the above substances, ortho-methoxybenzoic acid is preferred. The composition of the present invention has a composition of 0%.
. It contains from 01% to 1.5% by weight, preferably from 0.1% to 0.8% by weight, more preferably from 0.2% to less than 0.5% by weight of a radical scavenger.

An optional requirement of the composition of the present invention is that the pH is greater than 10, preferably 1
It is larger than 1, more preferably larger than 12. This is 0.4-2
% Is achieved by the addition of caustic. Caustic alkalis suitable for use herein include sodium and potassium hydroxide. Compositions of the invention containing hypochlorite preferably have a pH greater than 12 for hypochlorite stability.

The composition of the present invention is preferably aqueous and contains preferably 80% to 95%, more preferably 85% to 90% water.

The advantage of the present invention is that the addition of short-chain surfactants allows the formulator to achieve enhanced cleaning performance without resorting to the use of unconventional components and detergency aids. one of. Accordingly, the above list of optional auxiliary ingredients is illustrative and is not intended to be limiting in the present invention, and other such materials may be used herein.

The compositions of the present invention can be prepared by methods well known in the art, for example, when the polymer is p
It is prepared by the method described in GB 1329086, except that it is pre-dispersed in an aqueous acid solution of H3 and then neutralized to pH 7 before adding other components. The compositions of the present invention are prepared by mixing all components in a non-metallic device at room temperature or in warm water. If fatty acids are used, they are melted before adding to the mixture. Preferably, the surfactant blend is first prepared by adding a short-chain surfactant to a long-chain surfactant. Then, other optional ingredients such as fragrance and alkali metal hypochlorite are added with stirring. The colorant, when present, is added after all components have been mixed.

The composition of the present invention preferably has a shear rate of 15-100 s ⁻¹ at 25 ° C., measured with a Carrimed rheometer, preferably 10-4000 cps, more preferably 50-2 cps.
It has a viscosity of 000 cps, most preferably 150-1000 cps. When the composition is in the form of a spray, the viscosity of the spray composition is preferably 15 to 40 cps.

The compositions of the present invention can be used for a variety of cleaning purposes, for example for cleaning hard surfaces, whereby the thickened composition sticks to the surface longer than the non-thickened composition. It will be. "Hard surface" means here the bathroom,
Sanitary equipment means surfaces such as washbasins, showers, washing tubs and toilets, kitchens, sinks, countertops, tabletops, refrigerators, walls, windows and the like.

Composition Packaging Forms The compositions of the present invention can be packaged in a variety of suitable detergent packaging known to those skilled in the art. The liquid composition of the present invention is desirably packaged in a manually operated spray dispersion container, usually made of a synthetic organic polymeric plastic material. Therefore,
The present invention also includes the liquid cleaning compositions of the present invention packaged in a spray disperser, preferably a trigger spray disperser. In fact, the spray-type disperser contributes to the cleaning properties of the liquid cleaning composition, which is suitable for use in the present invention, because it is applied uniformly over a relatively large area of the surface to be cleaned. Such spray-type dispersers are particularly suitable for cleaning vertical surfaces. Surprisingly, spraying a liquid composition containing a polycarboxylate polymer, as opposed to a composition not containing the polymer, causes the composition to be sprayed by the user when the composition is sprayed. It has been found that there is a benefit in preventing or reducing inhalation.

The advantages of the present invention are seen when the cleaning composition is as described above. Thus, the use of a polycarboxylate polymer in a liquid cleaning composition, when the composition is in spray form, provides for prevention or reduction of inhalation of the composition by a user when the composition is sprayed.

[0031] Spray-type dispersers suitable for use in the present invention include, for example, Special
There are manually operated trigger type foam spray dispersers available from Packaging Products, Inc. or Continental Sprayers, Inc. These types of dispersers are described, for example, in US Pat. No. 4,701,311 by Dunnining et al., And US Pat.
It is disclosed in US-4,538,745. T8500 or T8900, commercially available from Continental Spray International, or T8100, commercially available from Canyon, are particularly preferred for use herein. In such a disperser, the liquid composition is broken up into fine droplets and becomes a spray directed at the surface to be treated. In fact, in such a spray-type disperser, the composition contained in the body of the disperser uses the energy transferred to the pump mechanism when a user starts the pump mechanism to disperse the spray-type disperser. Through the vessel head. Specifically, in the spray type disperser head,
The composition is pressed against an obstacle, such as a grid or cone, thereby shocking and helping to atomize the liquid composition, ie, helping to form droplets.

The present invention further includes a method for cleaning hard surfaces by applying an effective amount of a composition of the present invention to said hard surface. The composition can be applied as is or after dilution with water. Prior to application to the surface, the composition may be up to 200 times, preferably 50-150 times, more preferably 75-9 times by weight with water.
It is preferable to dilute by 5 times by weight. If the composition is diluted before use (to reach the full activity level on the order of 1.2%), the composition will advantageously give effective performance. In a preferred embodiment of the method of the invention, in which the composition is applied to a hard surface to be treated in diluted form, it is not necessary to rinse the surface after applying the composition.

Although the present invention has been described in substantial detail, the following examples are provided to further illustrate the practice of the invention and are not intended to limit the invention.

[0034]

【Example】

EXAMPLES The examples given below are not intended to be limiting, but merely provide one example of a formulation drawn by the applicant. All amounts are by weight of the total composition.

[0035]

[Table 1]

SLS is heptyl-nonyl sulfate, Empimin LN from A & W. LBS is a branched sulfate of C ₁₂ -C ₁₃ based on Isalchem 123. SBS is 2-ethylhexyl sulfate, Empicol 0585 / A from A & W. Polymer # 1 is Polygel DR from 3Vsigma. Polymer # 2 is Polygel W30 from 3Vsigma. Polymer # 3 is Carbopol ETD2691 from Goodrich.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C11D 3/37 C11D 3/37 17/08 17/08 (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW), EA (AM, AZ, BY, KG) , KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, K, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR , LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW (71) Applicant ONE PROCTER & GANBLE E PLAZA, CINCINNATI, OHIO, UNITED STATES OF AMERICA (72) Inventor Massa, Alesandra Italy , 80026 Casoria, Via, Europe 37 F term (reference) 4H003 AB03 AB14 AB26 AB31 AB38 AC08 DA04 DA05 DA07 DB04 EA15 EA20 EA21 EB21 EB22 EB23 EB30 ED02 EE08

Claims (9)

[Claims] 1. A liquid cleaning composition comprising a surfactant system comprising at least one linear short-chain anionic surfactant and a branched long-chain anionic surfactant. 2. The method according to claim 1, wherein the short-chain surfactant has 5 to 9 carbon atoms.
A cleaning composition as described. 3. The cleaning composition according to claim 1, wherein the long-chain surfactant has a carbon skeleton, at least one branch group, and an anionic group. 4. The cleaning composition according to claim 3, wherein said carbon skeleton has 10 to 16 carbon atoms. 5. The cleaning composition according to claim 3, wherein a branching group of the long-chain surfactant has 1 to 13 carbon atoms. 6. The cleaning composition according to claim 1, wherein the anionic surfactant is selected from alkali metal or alkaline earth metal sulfates, sulfonates, alkoxylated sulfates, phosphates, and mixtures thereof. . 7. The ratio between the short-chain linear surfactant and the long-chain branched surfactant is 30.
: 1 to 1: 3. The cleaning composition according to any one of claims 1 to 6. 8. The method according to claim 1, further comprising a short-chain branched surfactant.
The cleaning composition according to any one of the above. 9. The cleaning composition according to claim 1, further comprising a thickener, preferably a polycarboxylate thickener.