DE60310837T2 - Detergent and wet wipe - 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

technical area

The The present invention relates to cleaning compositions and wipes which these compositions include, for cleaning hard surfaces, in particular for cleaning shiny and transparent or translucent surfaces, such as enamel, ceramic, shiny Painting or glass surfaces. The wipes are impregnated with the hard surface cleaning composition.

background and state of the art

Ready Wipes, with a liquid Cleaning composition impregnated are very popular for cleaning hard surfaces. For shiny surfaces is It is very important that such wipes (generally referred to as "wipes") no visible traces of the cleaning composition, in general known as streaks or stains, leave behind because these are the surface give unsightly appearance. While on surfaces, like Painting, ceramics and enamel, such strips usually only are visible when the surface viewed at certain angles are on transparent Surfaces, like glass, stripes almost always clearly visible and therefore special unpleasant.

Thus, in the prior art, special attention has been paid to the production of wipes and cleaning compositions for glass which leave as little as possible streaks and stains upon drying. Compositions for cleaning glass and impregnating glass cleaning wipes often contain a relatively small amount of detergent surfactant, typically less than 1% of a nonionic or anionic surfactant. Furthermore, they often contain one or more organic solvents having a boiling point low enough to dry quickly on the surface. Some of these compositions contain a polymeric substance. Such compositions are disclosed in WO 99/09135 wherein the surfactant is alkyl sulfate containing propylene glycol butyl ether and ethanol as solvent and which preferably contains polyacrylate or a polyvinylpyrrolidone / acrylic acid copolymer. A similar composition is disclosed in WO 00/71661 which comprises an anionic linear alkyl sulfate surfactant, a nonionic alkyl polyglucoside surfactant and a solvent system comprising an alkylene glycol ether and a C ₁ -C ₆ alcohol.

WHERE 01/23510 discloses cleaning compositions containing an alkyl sulfate anionic Surfactant and / or an alkylpolyglycoside nonionic surfactant and a hydrophilic polymer such as polyvinyl pyrrolidone N-oxide. The compositions can furthermore an organic solvent and a polyacrylate thickener. Pre-moistened wipes that these compositions are also disclosed.

WHERE 01/30128 discloses articles for wiping surfaces, those with a cationic surfactant or a cationic polymer waterproof are.

EP 067016 discloses wet wipes comprising an aqueous composition having up to 1% of a nonionic surfactant and an at least partially esterified resin in a surfactant: resin ratio of 15: 1 to 1: 2. It may optionally contain a water-miscible organic solvent.

WO 01/38480 discloses a cleaning wipe moistened with an aqueous cleaning composition comprising a low-residue surfactant (preferably 0.1% alkyl polyglycoside), a hydrophilic polymer such as polyacrylic acid, and preferably a glycol ether and / or lower alcohol solvent. Similar damp wipes will be in US 4448704 disclosed. Similar wet wipes without polymer are in US 5342534 , WO 01/77280 and WO 01/77281. In EP 604996 the presence of a polymer is optional.

In US 3696043 It is disclosed that the reaction product of diethanolamine with a styrene-maleic anhydride copolymer reduces streaking of surfactant solutions on glossy surfaces such as glass.

Despite the large amount of proposed solutions for alleviating staining and streaking problems on glossy surfaces, there remains a need to further reduce this pro blems.

Summary the invention

Consequently the invention provides aqueous liquid Cleaning compositions for brilliant hard surfaces and wet wipes, comprising these compositions, wherein the composition a surfactant with low residue, a relatively hydrophobic alcoholic organic solvent and a copolymer of styrene and an unsaturated carboxylic acid or Carboxylic acid precursor includes. shiny Surfaces, those with the compositions according to the invention treated and left to dry show minimal or at all no streaking and staining.

• – das Tensid aus ethoxylierten aliphatischen C₈-C₁₈-Alkoholen, Aminoxiden, umfassend eine C₈-C₁₈-Alkylgruppe und zwei C₁-C₃-Alkylgruppen und C₆-C₁₈-Alkylpolyglykosiden mit einer (Poly)glykosidgruppe von ein bis vier Saccharideinheiten oder Gemischen davon, in einer Menge von 0,01 bis 1 Gew.-% ausgewählt ist;
• – das alkoholische Lösungsmittel ein Lösungsmittel mit einer Löslichkeit in Wasser zwischen 1 und 20% (bei 20°C), ausgewählt aus aliphatischen C₄-C₆-Alkoholen und Glykolmonoethern, in einer Menge von 0,1 bis 25 Gew.-% darstellt;
• – das Polymer ein Copolymer von Styrol und einer ungesättigten Carbonsäure oder Carbonsäurenvorstufe, modifiziert durch Veresterung mit C₁-C₆-Alkoholen und mit einem Molekulargewicht von 50000 oder mehr, in einer Menge von 0,0005 bis 0,1 Gew.-% darstellt.

Accordingly, the invention provides an aqueous glossy hard surface cleansing liquid composition comprising a surfactant, an organic alcoholic solvent and a polymer, characterized in that:

• The surfactant is C ₈ -C ₁₈ ethoxylated aliphatic alcohols, amine oxides comprising a C ₈ -C ₁₈ alkyl group and two C ₁ -C ₃ alkyl groups and C ₆ -C ₁₈ alkyl polyglycosides having a (poly) glycoside group to four saccharide units or mixtures thereof, in an amount of 0.01 to 1 wt .-% is selected;
• - The alcoholic solvent is a solvent having a solubility in water between 1 and 20% (at 20 ° C), selected from aliphatic C ₄ -C ₆ alcohols and glycol monoethers, in an amount of 0.1 to 25 wt .-% represents ;
• The polymer is a copolymer of styrene and an unsaturated carboxylic acid or carboxylic acid precursor modified by esterification with C ₁ -C ₆ -alcohols and having a molecular weight of 50,000 or more, in an amount of from 0.0005 to 0.1% by weight ,

The The invention further provides a wet wipe comprising a flexible substrate consisting of one or more layers of Woven or nonwoven fibrous material impregnated with a composition according to the invention, was produced.

Description of the invention in detail

All percentages given below are by weight unless otherwise stated.

The liquid composition

The Liquid cleaning compositions according to the invention include one or more anionic and / or nonionic and / or low residue amphoteric detergent surfactants in an amount of 0.01 to 1%, preferably 0.02 to 0.5%, more preferably 0.05 to 0.25%. Preferably, the surfactants are nonionic and include in particular the well-known ethoxylated C8-C18 aliphatic alcohols, amine oxides, comprising one C8-C18 group and two C1-C3-alkyl groups, and C6-C18 polyglycosides having a (poly) glycoside group of 1 to 4 Saccharide units. The alkyl polyglycosides are particularly preferred especially those with C8-C12-alkyl groups.

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

Further, the liquid compositions of the invention comprise from 0.0005 to 0.1% of a copolymer of styrene and an unsaturated carboxylic acid or carboxylic acid precursor. Such polymers may be, for example, copolymers of styrene with acrylic and / or methacrylic acid, copolymers of styrene with maleic anhydride or copolymers of styrene with (meth) acrylic acid and maleic anhydride. These polymers generally have a (weight average) molecular weight of 10,000 or more, preferably 50,000 or more, more preferably at least 100,000 or even 150,000, but generally less than 1,000,000, preferably less than 500,000 or even 300,000. The polymers may preferably be modified by esterification, in particular with a lower (≤ C6) -alcohol. Copolymers of styrene with maleic anhydride are preferred, especially those that are partially esterified, and are 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 marketed by Hercules under the trade name Scripset, such as Scripset 540, 740, 745, and similar polymers from other manufacturers.

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

The Compositions of the invention can optionally, but preferably contain one or more hydrophilic Solvent, in particular ethanol and / or isopropanol, in an amount of up to to 20%, more preferably between 2 and 15%.

The Compositions of the invention are preferably alkaline, i. have a pH of 7.5 or higher, more preferably between 8 and 12, more preferably between 8.5 and 11, most preferably ≤ 10.

Farther can the compositions optionally components known in the art are well known, such as preservatives, perfumes, colorants, pH-regulating compounds and the like.

Typical compositions of the invention include: C ₈ -C ₁₂ alkyl polyglycoside 0.05 to 0.2% by weight Butanol and / or propylene glycol butyl 1 to 5% by weight tylether (together) esterified in alkali soluble 0.002 to Styrene / maleic anhydride copolymer 0.01% by weight Ethanol and / or isopropanol 5 to 15% by weight water to 100% by weight wherein the surfactant: polymer ratio is between 18: 1 and 30: 1.

The Compositions of the invention can as such, for cleaning all types of shiny and / or transparent hard surfaces can and can be used by spraying applied, followed by wiping with a cloth, towel, Sponge or more similar Contraption. They are for the application with a wipe particularly suitable, which with the Pre-moistened composition, in particular below expelled.

The wipes

The Wet wipes according to the invention comprise a flexible substrate consisting of one or more layers of Woven or nonwoven fibrous material impregnated with a composition according to the invention, was produced.

suitable Substrates for Wet wipes are well known in the art and include nonwoven material with sufficient Wet strength and liquid absorption capacity to one to contain an appropriate amount of the liquid composition according to the invention and deliver it to the surface to be cleaned. The fibers can of natural Origin, for example viscose or cellulose, such as wood pulp or cotton, or of synthetic origin, such as polypropylene, polyester and nylon. Mixed fibers of different origin can be found in a layer of the substrate can be used.

Optionally, one or more polymer binders may be added. These binders may typically include one or more monomers selected from styrene / 2-ethylhexyl acrylate, butyl acrylate, methyl methacrylate, ethyl acrylate, methyl acrylate, acrylonitrile, and vinyl acetate. Any binder material present should be in the liquid composition not be soluble to such an extent that causes the wipe to cause streaking on the cleaned surface.

The Materials can using techniques generally known in the art Technologies such as carding, draining, wet laying, air laying and extrusion, into sheets be formed.

sheet can using techniques known in the art, such as Needling, sewing, Hydroentangling, chemical bonding, hotbonding, spunbonding, spunlacing and meltblowing. A preferred method is Spunlace.

The Wipe may be a single-layer structure or a multi-layer structure being composed of layers of materials of the above general Type is formed, which may be the same or different.

It It is important that the substrate is free of contaminants through the liquid Composition can be leached and banding up the wiped surface can cause. If required, the substrate may be prewashed prior to impregnation with the composition of the invention be used to remove such contaminants.

In front the impregnation with the composition according to the invention Typically, the wipe has an average thickness in the range from 0.1 to 3.0 mm, preferably 0.2 to 1.0 mm, more preferably 0.3 up to 0.6 mm.

In front the impregnation with the composition according to the invention the wipe typically has a maximum absorption of 1 to 20 g / g (grams of water per gram of wipe), preferably 2 to 12 g / g, more preferably 4 to 10 g / g.

Before being impregnated with the composition according to the invention, the wipe typically has a basis weight of 20 to 100 g / m ² , preferably 30 to 90 g / m ² , more preferably 40 to 80 g / m ² .

The wipes become more liquid with at least 0.5 g Composition per gram of substrate dry weight, preferably 1.0 to 4.0 g of liquid per gram of substrate, more preferably 1.0 to 2.0 g of liquid per gram of substrate, impregnated.

The Wipes according to the invention can also an additional not fibrous Layer of absorbent or liquid bearing material, such as a sponge layer or a layer of superabsorbent material, that the liquid re-clean using pressure.

preferred wipes are made from a combination of hydrophobic and hydrophilic fibers. More preferred are the wipes from a mixture of hydrophobic polyester, nylon or polypropylene fibers and hydrophilic cellulose (preferably cotton) or viscose fibers made in the same layer. The wipes may be one or more of Such layers include. Particularly preferred are wipes, the a blend of polyester fibers and viscose or cotton fibers. Preferably, the amount of hydrophobic fibers is 10 to 70% of the Wipe, more preferably 60%. A lot between 20 and 60% hydrophobic fibers are particularly suitable.

EXAMPLE

An aqueous cleaning fluid of the following composition was prepared: Scripset 740 0.005% Propylene glycol n-butyl ether 2.5% Glucopon 215CS UP * 0.10% ethanol 12.0% 3-iodo-2-propynyl butyl carbamate 0.005% Perfume 0.05% demineralized water to 100%

A wipe substrate consisting of 50% polyester and 50% viscose fibers and with a base weight of 50 g / m ² is wetted with the above composition to a liquid loading of 1.5 g of liquid per gram of substrate.

If used for cleaning window glass, gave the above wipes excellent and complete streak-free cleaning.

Claims (9)

An aqueous glossy hard surface cleansing liquid composition comprising a surfactant, an organic alcoholic solvent and a polymer, characterized in that: - the surfactant is C ₈ -C ₁₈ ethoxylated aliphatic alcohols, amine oxides comprising a C ₈ -C ₁₈ alkyl group and two C ₁ -C ₃ alkyl groups and C ₆ -C ₁₈ alkyl polyglycosides having a (poly) glycoside group of one to four saccharide units or mixtures thereof, in an amount of 0.01 to 1% by weight; The alcoholic solvent is a solvent having a solubility in water between 1 and 20% (at 20 ° C.) selected from aliphatic C ₄ -C ₆ -alcohols and glycol monoethers, in an amount of 0.1 to 25% by weight, represents; The polymer is a copolymer of styrene and an unsaturated carboxylic acid or carboxylic acid precursor modified by esterification with C ₁ -C ₆ -alcohols and having a molecular weight of 50,000 or more, in an amount of from 0.0005 to 0.1% by weight , A cleaning composition according to claim 1, characterized in that the surfactant is a C ₆ -C ₁₈ alkyl polyglycoside having 1 to 4 saccharide units, used in an amount of 0.02 to 0.5% by weight. A cleaning composition according to claims 1 or 2, characterized in that the solvent is a boiling point which is 250 ° C does not exceed and in an amount of 0.5 to 10% by weight. Cleaning composition according to claims 1 to 3, characterized in that the polymer is an alkali-soluble esterified styrene / maleic anhydride copolymer and is present in an amount of 0.001 to 0.05 wt .-%. Cleaning composition according to claims 1 to 4, characterized in that the weight ratio of surfactant to polymer between 10: 1 and 50: 1. Cleaning composition according to claims 1 to 5, characterized in that it additionally up to 20 wt .-% ethanol and / or isopropanol. A cleaning composition according to claims 1 to 6, comprising: C ₈ -C ₁₂ alkyl polyglycoside 0.05 to 0.2% by weight Butanol and / or propylene glycol 1 to 5% by weight tylether (together) esterified in alkali soluble 0.002 to Styrene / maleic anhydride copolymer 0.01% by weight Ethanol and / or isopropanol 5 to 15% by weight water to 100% by weight wherein the surfactant: polymer ratio is between 18: 1 and 30: 1. Wet wipe comprising a flexible substrate, that of one or more layers of woven or non-woven fiber material, waterproof with a composition according to any one of claims 1 to 7. Moist wiping cloth according to claim 8, characterized in that that the substrate consists of a mixture of hydrophobic and hydrophilic Fibers in the same layer, with the amount of hydrophobic fibers between 10 and 70% by weight of the substrate.