MXPA04009866A - Liquid cleaning composition. - Google Patents

Abstract

A liquid cleaning composition is described, which comprises approximately by weight: (a) 0.5% to 4% of a C9-C11 alkanol EO2-3 nonionic surfactant; (b) 2% to 7% of a C8-C18 alkanol EO7-8.5 nonionic surfactant; (c) 0.1% to 5% of a solubilizer selected from the group consisting of sodium xylene sulfonate and sodium cumene sulfonate and mixtures thereof; (d) 0.05% to 2% of a fatty acid; (e) 0.25% to 6% of magnesium inorganic salt; (f) 0.1% to 5 wt. % of an essential oil or a perfume; (g) 0.05% to 2.5% of an alkali metal salt of a polycarboxylic acid; (h) 0.05% to 5% of a C1-C4 alkanol; and (I) the balance being water, wherein the composition does not contain an amine having a pK value of more than 9, a furan-maleic anhydride copolymer sequestering agent or a water soluble detergency builder.

Description

LIQUID CLEANING COMPOSITION Field of the Invention The present invention relates to the liquid cleaning composition containing only surfactants that are considered to be biodegradable under anaerobic conditions. Despite this limited selection of surfactant, the composition still has excellent fat cutting properties, excellent foam collapse and improved residue profile.

Background of the Invention This invention relates to a liquid all-purpose cleaning composition that does not contain surfactants that are not biodegradable under anaerobic conditions but still exhibit excellent foam-collapsing properties, excellent fat-cutting properties and improved residue profile and is designed in accordance with the present invention. particular to clean hard surfaces.

In recent years, all-purpose liquid detergents have become widely accepted for cleaning hard surfaces, eg, wood and painted panels, tiled walls, sinks, tubs, linoleum or tile floors, washable wallpaper, etc. Such all-purpose liquids comprise transparent and opaque aqueous mixtures of water-soluble synthetic organic detergents and of water-soluble detergent-building salts. In order to achieve comparable cleaning efficiency with granular or powder cleaning compositions for all purposes, the use of water-soluble inorganic phosphate building salts was favored in the prior art of all-purpose liquids. For example, such early phosphate-containing compositions are described in U.S. Patent Nos. 2,560,839; 3,234,138; 3,350,319; and British Patent No. 1,223,739.

In view of environmental efforts to reduce phosphate levels in the earth's water, improved all-purpose liquids containing reduced concentrations of inorganic phosphate building salts or phosphate-free building salts have appeared. A particularly useful self-opaque liquid of the latter type is described in U.S. Patent No. 4,244,840.

However, these all-purpose liquid detergents of the prior art containing detergent building salts or other equivalent tend to leave films, stains, or scratches on unrinsed washed surfaces, particularly glossy surfaces. Therefore, such liquids require complete rinsing of the washed surfaces which is a time-consuming task for the user.

In order to overcome the above disadvantages of the all-purpose liquid of the prior art, U.S. Patent No. 4,017,409 teaches that a mixture of paraffin sulphonate and a reduced concentration of inorganic phosphate building salt should be employed. However, such compositions are not completely acceptable from an environmental point of view based on the phosphate content. On the other hand, another alternative to achieve phosphate-free all-purpose liquids has been to use a large proportion of a mixture of anionic and non-ionic detergents with lower amounts of glycol solvent. { ether and organic amine as shown in U.S. Patent No. 3,935,130. Again this approach has been completely satisfactory and the high levels of organic detergents needed to achieve cleaning causes foam which, in turn, leads to the need for complete rinsing which has been found to be undesirable for today's consumers.

Another approach to formulating a liquid detergent composition for hard surfaces or for all purposes where homogeneous and transparent product are important considerations, involves the formation of oil in water microemulsions (o / w) containing one or more active detergent compounds of surface, a solvent immiscible in water (typically, a hydrocarbon solvent), water and a "cosurfactant" compound that provides stability to the product. By definition, the oil-in-water microemulsion is a colloidal dispersion of spontaneous formation of oil phase particles having a particle size in the range of 25 to 800 A in a continuous aqueous phase.

In view of the extremely fine particle size of the particles of the dispersed oil phase, the microemulsions are transparent to light and therefore are transparent and usually highly stable against phase separation.

Patent disclosures relating to the use of oil removal solvents in oil-in-water microemulsions include, for example, European patent applications EP 0137615 and EP 0137616 of Herbots et al .; European patent application EP 0160762 of Johnston et al., and United States of America patent number 4,561, 991 issued to Herbots et al. Each of the descriptions of these patents also teaches the use of at least 5% by weight of grease removal solvent.

It is also known from the British patent application GB 2144763a granted to Herbots et al., Published on March 13, 1985, that magnesium salts improve the performance of grease removal of organic grease removal solvents, such as terpenes, in the liquid detergent compositions of the oil-in-water microemulsion. The compositions of the invention described by Herbots et al. Require at least 5% of the mixture of the grease removal solvent and magnesium salt and preferably at least 5% solvent (which can be a mixture of non-polar solvent immiscible in water with a poorly soluble polar solvent slightly) and at least 0.1% magnesium salt.

However, since the amount of lightly immiscible, water soluble components that may be present in the oil-in-water microemulsion, with total low active ingredients without harming the stability of the microemulsion is rather limited (eg, up to 18). % by weight of the aqueous phase), the presence of such a grease removal solvent in high amounts tends to reduce the total amount of oily or greasy soils that can be taken up by and in the microemulsion without causing the separation of the phase.

The following representative prior art patents also relate to liquid detergent compositions for cleaning in the form of oil-in-water microemulsions: U.S. Patent No. 4,472,291 issued to Rosario; U.S. Patent No. 4,540,448 issued to Gauteer et al .; U.S. Patent No. 3,723,330 issued to Sheflin; etc.

Liquid detergent compositions that include terpenes, such as d-limonene, or other fat removal solvent, even when not described in the form of oil-in-water microemulsions, are the subject of the following representative patent documents: European patent 0080749; British patent specification 1,603,047; and U.S. Patent Nos. 4,414,128 and 4,540,505. For example, U.S. Patent No. 4,414,128 broadly discloses an aqueous liquid detergent composition characterized by, by weight: (a) from 1% to 20% of ion surfactant with positive and negative charge, anionic, nonionic or amphoteric or mixtures thereof; (b) from 0.5% to 10% of a mono- or sesquiterpene or mixtures thereof, at a weight ratio of (a): (b) being in the range of 5: 1 to 1: 3; Y c) from 0.5% to 10% of a polar solvent having a solubility in water at 15 degrees centigrade in the range from 0.2% to 10%. Other ingredients present in the formulations described in this patent include from 0.05% to 2% by weight of an alkali metal, ammonium soap or alkanolammonium of a C13-C2 fatty acid; a calcium sequestrant from 0.5% to 13% by weight; a non-aqueous solvent, for example, alcohols and ester glycols, up to 10% by weight; and hydrotropes, for example, urea, ethanolamines, salts of low alkylaryl sulfonates, up to 10% by weight. All of the formulas shown in the examples of this patent include relatively large amounts of detergent building salts that cause detriment to the surface gloss.

Synthesis of the Invention The present invention provides an improved liquid cleaning composition that does not contain surfactants that are not biodegradable under anaerobic conditions but still have excellent foam collapsing properties and improved residue profile, and excellent fat cutting property and that is suitable for cleaning surfaces hard materials such as plastic, vitreous and metal surfaces that have a glossy finish, oil-stained floors, automotive machines, and other machines. More particularly, the improved cleaning compositions, with excellent foam-collapsing properties and excellent grease cutting adequately exhibit good grease removal properties due to the improved interfacial tensions, when used in undiluted (clean) or diluted form and leaves clean shiny surfaces without needing or requiring only minimal additional rinsing or wiped with cleaning cloth. The last characteristic is evidenced by few residues or not visible on the cleaned un-rinsed surfaces and, consequently, overcomes one of the disadvantages of the prior art products.

Surprisingly, these desirable results are achieved even in the absence of the polyphosphate or other inorganic or organic detergent building salts and also in the complete absence or substantially complete absence of the grease removal solvent.

In one aspect, the invention generally provides a stable, hard surface cleaning composition especially effective in the removal of oily and greasy. The cleaning composition includes, on a weight basis: (a) From 0.5% to 4% of an ethoxylated nonionic surfactant formed from a Cg-Cn alkanol and from about 2 to about 3 moles of ethylene oxide; (b) from 2% to 7% of an ethoxylated nonionic surfactant formed of C8-Ci8 alkanol and from about 6 to 9, preferably from about 7 to about 8.5 moles of ethylene oxide; c) from 0% to 6%, more preferably from 0.05% to 5% of a Ci-C4 alkanol such as ethanol and / or propanol and / or 0% to 6% of a propylene glycol ether; (d) from 0.1% to 5% of a solubilizer selected from the group consisting of sodium xylene sulfonate and / or sodium eumenium sulfonate; (e) from 0.25% to 6% inorganic magnesium salt; (f) from 0.05% to 2% of a fatty acid; (g) from 0.1% to 5.0% of a perfume or essential oil; (h) from 0.05% to 2.5% of an alkali metal salt of a polycarboxylic acid having a molecular weight of from about 5,000 to about 15,000; Y i.) the remainder being water, wherein the composition does not contain an amine having a pK value of more than 9, a furan malignant anhydride copolymer sequestering agent or a water soluble detergent enhancer and the composition does not contain polyethylene glycols soluble in water having a molecular weight of 150 to 1000, the polypropylene glycol of the formula HO (CH3CHCH20) nH, wherein n is a number from 2 to 18, mixtures of polyethylene glycol and polypropylene glycol (Synalox) and mono and di Ci-C6 ethylene glycol alkali ethers having the structural formulas R (X) nOH, Ri (X) nOR and Ri (X) nORi, wherein R is of the alkali group Ci-C6, Ri is of the acyl group C2-C4, X is (OCH2CH2) or (OCH2 (CH3) CH) and n is a number from 1 to 4, diethylene glycol, polyamino acids, monosuccinic acids selected from the group consisting of succinic acid, glutaric acid, and phosphorite acid and any salt thereof, ethylene diamine tetraacetic acid or any salt d and the same, enzymes, zeolite, alkali metal silicates, triethylene glycol.

Also excluded from the immediate all purpose cleaning compositions are the fat release agents characterized by the formula: wherein Rx is a methyl group and R2, R3, and are independently selected from the group consisting of methyl, ethyl, and CH2CH2Y, wherein Y is selected from the group consisting of chlorine, bromine, C02H, (CH20) nOH, . wherein n = 1 to 10, OH, CH 2 CH 9 OH and x is selected from the group consisting of chlorine and bromine, methosulphate Also excluded from the immediate all-purpose cleaning compositions are the fat release agents which are a maleic ethoxylated ethoxylated alpha olefin anhydride copolymer having a comb-like structure with both hydrophobic and hydrophilic chains and is described by the formula: wherein n is from about 5 to about 14, preferably from about 7 to 9, x is from about 7 to 19, preferably from 8 to 19, and is of such value as to provide a molecular weight of about 10,000 to around 30,000.

Detailed description of the invention The present invention relates to a cleaning composition for hard surface of stable optics comprising approximately by weight: from 0.5% to 4% of a first nonionic surfactant; 2% to 7% of a second nonionic surfactant; from 0.1% to 5% of a solubilizer; from 0.05% to 2.5% of an alkali metal salt of a polycarboxylic acid; from 0.05% to 2% of a fatty acid; from 0.25% to 6% magnesium sulfate eptahydrate; from 0.1% to 5% of an essential oil or a perfume; and the balance being water.

As used herein and in the appended claims, the term "perfume" is used in this ordinary sense to refer to and include any fragrant substance not soluble in water or the mixture of substances that include natural odorous substances (eg, obtained from the extraction of flowers, herbs, buttons or plants), artificial (for example, the mixture of natural oils or oil constituents) and synthetically produced substances. Typically, perfumes are complex mixtures of combinations of various organic compounds such as alcohols, aldehydes, ethers, aromatics and various amounts of essential oils (e.g., terpenes) such as from 0% to 80%, usually from 10% to 70%. % by weight, the essential oils themselves being volatile odorous compounds and also serve to dissolve the other components of the perfume.

In the present invention the precise composition of the perfume is of no particular consequence for performing cleaning as long as it meets the criteria of water immiscible and has a pleasant smell. Of course, of course, especially for cleansing compositions intended for use in the home, the perfume, as well as all other ingredients, must be acceptable from the cosmetic point of view, for example, non-toxic, hypoallergenic, etc. The immediate compositions show a marked improvement in eco-toxicity compared to the existing commercial products.

Suitable essential oils are selected from the group consisting of: Anetol 20/21 natural, star anise seed oil, global brand anise oil, balsam (Peru), basil oil (India), black pepper oil, oil black pepper resin 40/20, rose forest (Brazil) FOB, Borneo flakes (China), camphor oil, white camphor powder, technical synthetic, Cananga oil (Java), cardamom oil, oil cassia (China), cedarwood oil (China) BP, cinnamon bark oil, cinnamon leaf oil, citronella oil, clove bud oil, clove leaf, coriander (Russia), Cumarú at 69 degrees Celsius (China), Cyclamen Aldehyde, Diphenyl Oxide, Vanillin Ethyline, Eucalyptol, Eucalyptus Oil, Eucalyptus Citriodora, Dill Oil, Geranium Oil, Ginger Oil, Ginger Oil-Resin (India), Grapefruit Oil, Oil of Guaiac wood, Gurjun balm, heliotropin, isobornyl acetat or, isolongifolene, juniper oil, L-methyl acetate, lavender oil, lemon oil, lemon balm oil, distilled lime oil, Litsea Cubeba oil, longifollar, menthol crystals, methyl cerril quejona, methyl chavicol, methyl salicylate , musk, xylol musk, nutmeg oil, orange oil, patchouli oil, peppermint oil, ethyl phenyl alcohol, pepper oil, pepper leaf oil, rosaline, sandalwood oil, sandenol, sage oil , clary sage, saffron oil, peppermint oil, lavender, mats, tea tree oil, vanilin, vetiver oil (Java), pyrolysis.bEN The cleaning composition also contains an inorganic or organic oxide salt of a multivalent metal cation, particularly Mg ++. The metal or oxide salt provides several fits including improved cleaning performance in diluted use, particularly in areas of mild water, and minimized amounts of perfume required to obtain the microemulsion state. Magnesium sulfate, anhydride or hydrated ether (eg, heptahydrate) is especially preferred as the magnesium salt. Good results have also been obtained with magnesium oxide, magnesium chloride, magnesium acetate, magnesium propionate and magnesium hydroxide. These inorganic magnesium salts can be used with formulas at neutral or acidic pH since the magnesium hydroxide will not precipitate at these pH levels. Even though magnesium is the preferable multivalent metal from which salts (including oxide and hydroxide) are formed, other polyvalent metal ions can also be used providing that their salts are non-toxic and are soluble in the aqueous phase of the desired system pH level.

Cleaning compositions include from about 0.05% to about 2.0% by weight of the C8-C22 fatty acid composition, or of fatty acid soap as a foam suppressant.

The addition of fatty acid or fatty acid soap provides an improvement in the rinsing ability of the composition whether it is applied cleanly or diluted. Generally, however, it is necessary to increase the level of cosurfactant to maintain the stability of the product when the acid or the fatty soap is present. If it is more than 2.55 by weight of a fatty acid is used in the immediate compositions, the composition will be unstable at low temperatures as well as having an objectionable odor.

As an example of fatty acids which can be used as such or in the form of soap, mention may be made of fatty acids of distilled coconut oil, fatty acids of the "mixed vegetable" type (for example, polyunsaturated chains Ci§ and / or mono-saturated of high percentage); oleic acid, stearic acid, palmitic acid, eicosanoic acid, and the like, generally those fatty acids having from 8 to 22 carbon atoms being acceptable.

The C 1 -C 4 alkanol is preferably ethanol and / or isopropanol.

The final essential ingredient in the invention of cleaning compositions or hard surface cleaning compositions for all purposes is water. The proportion of water in the compositions of the hard surface cleaning composition for all purposes is generally in the range of 20% to 97%, preferably 70% to 97% by weight.

The liquid cleaning composition of this invention can, if desired, also contain other components either to provide additional effect to make the product more attractive to the consumer. The following is mentioned by way of example: colors or dyes in amounts up to 0.5% by weight; bactericides in amounts of up to 1% by weight; preservatives or antioxidants, such as 5-bromo-5-nitro-dioxane-1, 3; 5-chloro-2-methyl-4-isotaliazolin-3-one, 2,6,6-di-tert. butyl-p-cresol, etc., in amounts up to 2% by weight; and pH adjusting agents, such as sulfuric acid or sodium hydroxide, as needed. In addition, if opaque compositions are desired, up to 4% by weight of an opacifier may be added.

In final form, the cleaning compositions exhibit stability at reduced and increased temperatures. More specifically, such compositions remain transparent and stable in the range of 4 degrees centigrade to 50 degrees centigrade, especially from 2 degrees centigrade to 43 degrees centigrade. Such compositions exhibit a pH in the acid or neutral range depending on the intended end use. The liquids are readily pourable and exhibit a viscosity in the range of 6 to 60 milliPascals per second (mPas.) As measured at 25 degrees Celsius with a Brookfield RVT Viscometer, using a number 1 spindle that rotates at 20 revolutions per minute. Preferably, the viscosity is maintained in the range of 10 to 40 milliPascals per second.

The compositions are directly ready for use or can be diluted as desired in any case no or only minimal rinsing is required and substantially no residue or line is left behind. In addition, because the compositions are free of detergent builders such as alkali metal polyphosphates, they are environmentally acceptable and provide better "gloss" on clean hard surfaces. The environmental profile is also greatly improved by the fact that the composition does not contain surfactants that are not biodegradable under anaerobic conditions.

When intended to be used in a clean manner, liquid concentrations may be packaged under pressure in an aerosol container or in a pump-type sprayer for the so-called spray type and cleaning of the application.

Because the compositions are prepared as aqueous liquid formulas and since no particular mixture is required to form a microemulsion, the compositions are easily prepared simply by combining all the ingredients in a suitable vessel or vessel. The mixing order of the ingredients is not particularly important and generally the various ingredients can be added sequentially or all at once or in the form of aqueous solutions of each or all of the surfactants and amphiphiles that can be separately prepared and combined with each one and with the perfume. The magnesium salt, or other multivalent metal compound, when present, may be added as an aqueous solution thereof or may be added directly. It is not necessary to use high temperatures in the formation step and the temperature of the room is sufficient.

Immediate cleaning compositions explicitly exclude alkali metal silicates and alkali metal reinforcers such as alkali metal polyphosphates, alkali metal carbonates, alkali metal phosphonates, and alkali metal citrates because these materials, if used in the immediate composition , they can cause the composition to have a high pH as well as leaving residue on the surface that is being cleaned.

The following examples illustrate the liquid cleaning compositions of the described invention. Unless otherwise specified, all percentages are by weight. The exemplified compositions are illustrative only and do not limit the scope of the invention. Unless otherwise specified, the proportions in the examples and other parts in the specification are by weight.

Example 1 The following compositions in% by weight were prepared by simple mixing at 25 degrees centigrade.

Claims (1)

E I V I N D I C A C I O E S

1. A liquid cleaning composition comprising approximately by weight: a) 0.5% to 4% of a non-ionic surfactant alkanol Cg-Cn of ethylene oxide 2-3; b) 2% to 7% of a nonionic surfactant alkanol Cs-Cis of ethylene oxide 7-8.5; c) 0.1% to 5% of a solubilizer selected from the group consisting of sodium xylene sulfonate and sodium eumenium sulfonate and mixtures thereof; d) 0.05% to 2% of a fatty acid; e) 0.25% to 6% of an inorganic magnesium salt; f) 0.1% to 5% by weight of an essential oil or perfume; g) 0.05% to 2.5% of an alkali metal salt of a polycarboxylic acid; h) 0.05% to 5% of a Ci-C4 alkanol; and i) the balance being water, wherein the composition does not contain an amine having a pK value of more than 9, a furan-maleic anhydride copolymer sequestering agent or a water-soluble builder. SUMMARIZES A liquid cleaning composition is described, comprising approximately by weight: a) 0.5% to 4% of a non-ionic surfactant alkanol Cg-Cn of ethylene oxide 2-3; b) 2% to 7% of a non-ionic surfactant C8-Ci8 alkanol of ethylene oxide 7-8.5; c) 0.1% to 5% of a solubilizer selected from the group consisting of sodium xylene sulfonate and sodium eumenium sulfonate and mixtures thereof; d) 0.05% to 2% of a fatty acid; e) 0.25% to 6% of an inorganic magnesium salt; f) 0.1% to 5% by weight of an essential oil or perfume; g) 0.05% to 2.5% of an alkali metal salt of a polycarboxylic acid; h) 0.05% to 5% of a Ci-C4 alkanol; and i) the remainder being water, wherein the composition does not contain an amine having a pK value of more than 9, a furan-maleic anhydride copolymer sequestering agent or a water-soluble builder.