ES2279927T3 - CLEANING COMPOSITION AND WIP. - Google Patents

Abstract

An aqueous liquid cleaning composition comprises (wt.%) surfactant (0.01-1), alcoholic solvent (0.1-25) and polymer (0.0005-0.1). The alcoholic solvent is a hydrophobic solvent of 4-6C aliphatic alcohol or glycol mono-ether. The polymer is a copolymer of styrene and an unsaturated carboxylic acid or carboxylic acid precursor. An independent claim is also included for a wet wipe comprising a flexible substrate made of woven or non-woven fibrous material layer(s) impregnated with the aqueous liquid cleaning composition.

Description

Cleaning and cloth composition.

Technical field

The present invention relates to compositions of cleaning and rags comprising these compositions, for clean hard surfaces, more particularly to clean glossy and transparent or translucent surfaces such as enamel, ceramics, satin paint and glass surfaces. The rags are they impregnate with the hard surface cleaning composition.

Background and prior art

Ready-to-use rags, impregnated with a Liquid cleaning composition are very popular for cleaning hard surfaces. For glossy surfaces it is very important that such rags (generally referred to as "wet rags") do not leave visible traces of the cleaning composition, usually known as stripes or specks, since these give the surface a unsightly appearance. While on surfaces such as paint, ceramic and enamel these stripes are only visible normally when looking at the surface at certain angles, on transparent surfaces, such as glass, the stripes are almost always clearly visible and therefore particularly annoying

Therefore, particular attention has been paid in the prior art in the preparation of rags and compositions of cleaning for glass that in the drying leave streaks and specks so Small as possible. Compositions for cleaning glass or to impregnate glass cleaning cloths often contain a relatively low amount of a detergent surfactant, typically less than 1% of a nonionic or anionic surfactant. In addition, they often contain one or more organic solvents with a boiling point low enough to quickly dry the surface. Some of these compositions contain a substance polymeric Such compositions are disclosed in the document. WO99 / 09135, in which the surfactant is alkyl sulfate, which it contains propylene glycol ether and ethanol as solvents and that preferably contains a polyacrylate copolymer or polyvinylpyrrolidone / acrylic acid. A similar composition is disclosed in WO00 / 71661 comprising a surfactant linear alkyl sulfate anionic, a non-ionic surfactant of poly (alkyl glycoside) and a solvent system that comprises an alkylene glycol ether and an alcohol C1-C6.

WO01 / 23510 discloses compositions of cleaning comprising an anionic sulfate surfactant of alkyl and / or a nonionic poly (glycoside) surfactant of alkyl) and a hydrophilic polymer such as n-oxide of poly (vinyl pyridine). The compositions can also comprise an organic solvent and a thickening agent of polyacrylate Rags are also disclosed pre-moistened that comprise these compositions

WO01 / 30128 discloses articles for rag surfaces impregnated with a cationic surfactant or a cationic polymer.

EP067016 discloses wet rags that they comprise an aqueous composition with up to 1% non-surfactant ionic and at least one partially esterified resin in a surfactant to resin ratio from 15: 1 to 1: 2. May optionally contain a water miscible organic solvent.

WO01 / 38480 discloses a cloth of cleaning moistened with an aqueous cleaning composition that comprises a low residue surfactant (preferably 0.1% poly (alkyl glycoside), a hydrophilic polymer such as poly (acrylic acid) and preferably a solvent of glycol ether and / or lower alcohol. Similar wet rags will disclosed in document US4,448,704. Similar wet rags without Polymers are described in US 5,342,534, WO01 / 77280 and WO01 / 77281. In EP604996 the presence of a polymer is optional.

In document US3,696,043 it is disclosed that the reaction product of diethanolamine with an anhydride copolymer  maleic / styrene reduces scratch of surfactant solutions on shiny surfaces such as glass.

Despite the large number of solutions proposals to alleviate scratch and stain problems on glossy surfaces remains the need to further reduce this problem.

Brief Description of the Invention

Thus, the invention provides compositions of Aqueous liquid cleaning for shiny hard surfaces as well as wet rags comprising these compositions, in which The composition comprises a low residue surfactant, a alcoholic organic solvent and a styrene copolymer and a unsaturated carboxylic acid or carboxylic acid precursor. The glossy surfaces treated with the compositions according to  the invention and allowed to dry show minimal scratching and staining or none at all.

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Accordingly, the invention provides a aqueous liquid cleaning composition for hard surfaces bright comprising a surfactant, an organic solvent alcoholic and a polymer characterized by:

- the surfactant is chosen from alcohols C8-C18 ethoxylated aliphatics, amine oxides that they comprise a C8-C18 alkyl group and two groups C1-C3 alkyl and poly (alkyl glycosides) C6-C18 with a (poly) glycoside group of 1-4 saccharide units, or mixtures thereof, in an amount of 0.01-1% weight;

- the alcoholic solvent is a solvent with a water solubility of between 1 and 20% (at 20 ° C) chosen from C4-C6 aliphatic alcohols and glycol monoethers, in an amount of 0.1-25% weight; Y

- the polymer is a copolymer of styrene and a unsaturated carboxylic acid or carboxylic acid precursor, modified by esterification with alcohols C1-C6 and having a molecular weight of 50,000 or more, in an amount of 0.0005-0.1% weight.

The invention further provides a damp cloth. comprising a flexible substrate made of one or more layers of woven or nonwoven fibrous material impregnated with a composition according to the invention.

Detailed description of the invention

All percentages given below are by weight unless otherwise indicated.

Liquid composition

The liquid compositions according to the invention comprise one or more low detergent surfactants anionic and / or non-ionic and / or amphoteric residues in an amount of 0.01-1%, preferably 0.02-0.5%, more preferably 0.05-0.25%. Preferably the Surfactants are nonionic and particularly comprise the aliphatic alcohols ethoxylated C8-C18 well known, amine oxides comprising an alkyl group C8-C18 and two C1-C3 alkyl groups and C6-C18 poly (alkyl glycosides) with a (poly) glycoside group of 1-4 units of saccharide. Poly (alkyl glycosides) are particularly preferred, especially those with alkyl groups C8-C12.

The liquid compositions according to the invention also comprise one or more alcoholic solvents hydrophobic that is alcoholic solvents with a solubility limited in water between 1% and 20% (at 20ºC). Solvents alcoholics can be C4-C6 aliphatic alcohols or they can be glycol monoether type solvents such as mono- or diethylene or mono- or dipropylene glycol alkyl monoethers in which the alkyl group has up to 8 carbon atoms. Preferably the Solvents have a water solubility of 2-10%. The most suitable examples are n-butanol and propylene glycol butyl ethers, particularly n-butyl ether. The solvents should evaporate easily from the surface and therefore preferably have a boiling point not exceeding 250 ° C, more preferably as much 200 ° C. The amount of solvent in the composition is 0.1-25%, preferably 0.5-10%, more preferably at most 5%, but does not exceed the limit of its water solubility. More preferably it is at least 1%.

In addition the liquid compositions according to the invention comprise 0.0005-0.1% of a copolymer of styrene and an unsaturated carboxylic acid or acid precursor carboxylic. Said polymers can be, for example, copolymers of styrene with acrylic and / or methacrylic acid, styrene copolymers with maleic anhydride or styrene copolymers with acid (meth) acrylic and maleic acid. These polymers have generally a molecular weight (average weight) of 10,000 or more, preferably 50,000 or more even more preferably at least 100,000 or even 150,000, but generally below 1,000,000, preferably below 500,000 or even 300,000. The polymers can preferably be modified by esterification, particularly with a lower alcohol (≤ C6). Styrene anhydride copolymers are preferred maleic, particularly those that are partially esterified and soluble in aqueous alkali. Preferably the Styrene / maleic anhydride ratio in the polymer is above 1, more preferably between 1.05 and 1.5, most preferably between 1.1 and 1.3. Particularly suitable polymers are those marked by Hercules under the Scripset brand such as Scripset 540, 740, 745 and similar polymers from other manufacturers.

The amount of polymer in the composition is preferably 0.001-0.05%, more preferably 0.002-0.02%. The weight ratio of surfactant to polymer is preferably between 10: 1 and 50: 1, more preferably  above 15: 1, even more preferably between 18: 1 and 30: 1

The compositions of the invention may optionally contain but preferably one or more solvents hydrophilic, particularly ethanol and / or isopropanol, in an amount of up to 20%, more preferably between 2 and 15%.

The compositions of the invention are preferably alkaline, that is, it has a pH of 7.5 or higher, more preferably between 8 and 12, even more preferably between 8.5 and 11, most preferably? 10.

In addition, the compositions may contain optional components well known in the art such as preservatives, perfumes, coloring agents, regulatory compounds of pH and the like.

Typical compositions according to the invention comprise:

Poly (glycoside of I rent) C8-C12 0.05-0.2% Butanol   and / or propylene glycol butyl ether (together) 1-5% Copolymer of esterified alkaline / anhydride soluble styrene maleic 0.002-0.01% Optionally:   ethanol and / or isopropanol 5-15% Water Until 100% Weight ratio from surfactant to polymer 18: 1 - 30: 1

The compositions according to the invention are can use as such to clean all kinds of hard surfaces transparent and / or bright and can be applied by spray followed by wiping with a cloth, towel, sponge or similar utensil. They are particularly suitable for application with a cloth that is pre-moistened with the composition, as stated more particularly to continuation.

Rags

The wet rags according to the invention comprise a flexible substrate made of one or more layers of woven or nonwoven fibrous material impregnated with a composition according to the invention.

Substrates are well known in the art. Suitable for wet rags and include non-woven material with sufficient wet tension and liquid absorption capacity to contain an adequate amount of the liquid composition of according to the invention and supply it to the surface to be cleaned. The fibers may be in the form of natural sources by Viscose or cellulose example such as wood or cotton pulp or of synthetic origin such as polypropylene, polyester and nylon. Be they can use mixed fibers from different sources in a layer of substratum.

Optionally, one or more can be added polymeric binders. These binders can typically include one or more selected styrene / acrylate monomers of 2-ethylhexyl, butyl acrylate, methacrylate methyl, ethyl acrylate, methyl acrylate, acrylonitrile and vinyl acetate Any binder material present does not it should be soluble in the liquid composition to the point that cause the cloth to scratch the surface cleaned.

Materials can be layered using technologies generally known in the art such as carding, dry, wet, airborne and extrusion.

Layers can be linked using technologies known in the art such as needle piercing, welding by points, hydro-tangled, chemical bound, thermal bonding, spin bonding, spinning tie and meltblown A preferred method is tied by spinning.

The rag can be a single structure layer or a multilayer structure formed by layers of materials of the previous general type, which may be the same or different.

It is important that the substrate is free of impurities that can seep from the liquid composition and can cause scratching on the cleaned surface. If necessary, the substrate can be washed before impregnation with the composition of the invention to remove said impurities.

Before impregnation with the composition of the invention, the cloth typically has an average thickness that varies from 0.1 to 3.0 mm, preferably from 0.2 to 1.0 mm, more preferably from 0.3 to 0.6 mm.

Before impregnation with the composition of the invention, the cloth typically has a maximum absorbency of from 1 to 20 g / g (grams of water per gram of cloth), preferably from 2 to 12 g / g, more preferably from 4 up to 10 g / g

Before impregnation with the composition of the invention, the cloth typically has a basis weight of from 20 up to 100 g / m2, preferably from 30 to 90 g / m2, more preferably from 40 to 80 g / m2.

The rags are impregnated with at least 0.5 g of liquid composition per g dry weight of substrate, preferably 1.0-4.0 g of liquid per g of substrate, plus preferably 1.0-2.0 g of liquid per g of substratum.

The rags according to the invention also may comprise an additional non-fibrous layer of material absorbent or liquid carrier such as a spongy layer or a layer of super absorbent material that is capable of releasing the liquid again under pressure application.

Preferred rags are made of a combination of hydrophobic and hydrophilic fibers. More preferably The rags are made of a mixture of polyester fibers, nylon or hydrophobic polypropylene and cellulose fibers (preferably cotton) or hydrophilic viscose in the same layer. The rags can comprise one or more of said layers. The most preferred are rags comprising a mixture of polyester fibers and fibers of cotton or viscose.

Preferably, the amount of fibers hydrophobic is 10-70% of the cloth, more preferably at most 60%. An amount of between 20 and 60% hydrophobic fibers It is particularly suitable.

Example

An aqueous cleaning liquid of the following composition:

Scripset 740 0.005% Propylene glycol n-butyl ether 2.5% Glucopon  215CS UP * 0.10% Ethanol 12.0% Carbamate of 3-iodine-2propinil butyl 0.005% Fragrance 0.05% Water demineralized Up to 100%

A rag substrate consisting of 50% polyester and 50% viscose fibers with a basis weight of 50 g / m2 with the above composition with a liquid charge of 1.5 g of liquid per g of substrate.

When they were used to clean a window glass the previous rags gave excellent cleaning and completely scratch free.

Claims (9)

1. Aqueous liquid cleaning composition for glossy hard surfaces comprising a surfactant, an alcoholic organic solvent and a polymer characterized in that: - the surfactant is chosen from alcohols C8-C18 ethoxylated aliphatics, amine oxides that they comprise a C8-C18 alkyl group and two groups C1-C3 alkyl and poly (alkyl glycosides) C6-C18 with a (poly) glycoside group of 1-4 saccharide units, or mixtures thereof, in an amount of 0.01-1% weight; - the alcoholic solvent is a solvent with a water solubility of between 1 and 20% (at 20 ° C) chosen from C4-C6 aliphatic alcohols and glycol monoethers, in an amount of 0.1-25% weight; Y - the polymer is a copolymer of styrene and a unsaturated carboxylic acid or carboxylic acid precursor, modified by esterification with alcohols C1-C6 and having a molecular weight of 50,000 or more, in an amount of 0.0005-0.1% weight. 2. Cleaning composition according to claim 1, characterized in that the surfactant is a C6-C18 poly (alkyl glycoside) with 1-4 saccharide units, used in an amount of 0.02-0.5% by weight. 3. Cleaning composition according to claims 1 or 2, characterized in that the solvent has a boiling point not exceeding 250 ° C and is present in an amount of 0.5-10% by weight. 4. Cleaning composition according to claims 1-3, characterized in that the polymer is an alkaline soluble esterified styrene / maleic anhydride copolymer and is present in an amount of 0.001-0.05% by weight. 5. Cleaning composition according to claims 1-4, characterized in that the weight ratio of the surfactant to the polymer is between 10: 1 and 50: 1. 6. Cleaning composition according to claims 1-5, characterized in that it additionally contains up to 20% by weight of ethanol and / or isopropanol. 7. Cleaning composition according to claims 1-6, comprising: Poly (glycoside of I rent) C8-C12 0.05-0.2% Butanol and / or propylene glycol butyl ether (together) 1-5% Copolymer of esterified alkaline soluble styrene / anhydride maleic 0.002-0.01% Optionally: ethanol and / or isopropanol 5-15% Water Until 100% Where the relationship by weight of surfactant to polymer is between 18: 1 and 30: 1 8. Wet cloth comprising a substrate flexible made of one or more layers of woven fibrous material or not tissue impregnated with a composition according to any one of claims 1-7. 9. Wet cloth according to claim 8, characterized in that the substrate consists of a mixture of hydrophobic and hydrophilic fibers in the same layer in which the amount of hydrophobic fibers is between 10 and 70% substrate weight.