WO2012049202A1

WO2012049202A1 - Foaming powdery cleaning agent having disinfecting properties

Info

Publication number: WO2012049202A1
Application number: PCT/EP2011/067790
Authority: WO
Inventors: Francesca Corbellini; Anke Ernst; Brigitte Giesen; Nadine Warkotsch; Regina Stehr
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2010-10-12
Filing date: 2011-10-12
Publication date: 2012-04-19
Also published as: DE102010042346A1

Abstract

The invention relates to a powdery cleaning agent containing at least one acid, at least one water-soluble carbonate and at least one biocide, which is used for the disinfecting cleaning of flush toilets or also washing machines.

Description

"Foaming powdery cleaner with disinfecting properties"

The invention relates to a powdered detergent containing at least one acid and at least one water-soluble carbonate, which further contains at least one biocide.

Powdered detergents have long been known and accepted by the consumer. In particular, for cleaning flush toilets are preferably used acidic agents that help to remove lime and urine scale. Such agents, which additionally contain a water-soluble carbonate so that they release carbon dioxide on contact with water and thereby foam, are perceived as particularly powerful. In addition, the foaming promotes the dissolution of the agent and the distribution of the active ingredients.

So far on the market, foaming WC powders show only low antibacterial properties and comparatively weak Kalklöseeigenschaften. In contrast, the consumer desire for high cleaning power, even with the removal of limescale, and at the same time good disinfecting effect.

Washing machines can also be contaminated with germs, in particular when frequently used liquid detergents and washing aids and / or frequent use at low temperatures. In addition, the problem of the formation of limescale in the machine and the hoses is also known here. Therefore, there is also a consumer desire for good cleaning and Kalklösekraft and disinfecting Wrkung.

It has now been shown that a foaming powder containing a biocide, has a good Kalklöseleistung and has a disinfecting effect.

An object of the invention is therefore a powdered detergent containing at least one acid and at least one water-soluble carbonate, which further contains at least one biocide.

This powder is used for cleaning and disinfecting flush toilets. Another

The invention therefore relates to the use of a pulverulent cleaning agent according to the invention for the disinfecting cleaning of flushing toilets.

In addition, the cleaning agent according to the invention can also be used for the disinfecting cleaning and descaling of washing machines. Both the rinsing chamber and the entire machine are freed from biofilms, calcium deposits and other soiling and disinfected. Another object of the invention is therefore the use of a

Powdery agent according to the invention for the disinfecting cleaning of washing machines, in particular washing machine Einspülkammern. Substances which also serve as ingredients of cosmetic products are referred to below, where appropriate, according to the International Nomenclature Cosmetic Ingredient (INCI) nomenclature. Chemical compounds carry an INCI name in English, plant ingredients are listed only after Linne in Latin, so-called trivial names such as "water", "honey" or "sea salt" are also given in Latin. The INCI names can be found in the International Cosmetic Ingredient Dictionary and Handbook - Seventh Edition (1997), published by The Cosmetic, Toiletry and Fragrance Association (CTFA), 1 101 17th Street, NW, Suite 300, Washington, DC 20036, USA, and contains more than 9,000 INCI names, as well as references to more than 37,000 trade names and technical names, including its distributors from over 31 countries. The International Cosmetic Ingredient Dictionary and Handbook assigns to the ingredients one or more chemical classes, such as polymer ethers, and one or more functions, such as surfactants-cleansing agents, which are further explained and discussed below possibly also referred to.

The indication CAS means that the following sequence of numbers is a name of the Chemical Abstracts Service.

In the context of the present invention are fatty acids or fatty alcohols or their derivatives - unless otherwise stated - representative of branched or unbranched carboxylic acids or alcohols or their derivatives having preferably 6 to 22 carbon atoms, in particular 8 to 20 carbon atoms, particularly preferably 10 bis 18 carbon atoms, most preferably 12 to 16 carbon atoms, for example 12 to 14 carbon atoms. The former are particularly preferred for their vegetable base as based on renewable raw materials for environmental reasons, but without limiting the teaching of the invention to them. In particular, the oxo alcohols obtainable, for example, by Roelen's oxo synthesis or derivatives thereof having preferably 7 to 19 carbon atoms, in particular 9 to 19 carbon atoms, more preferably 9 to 17 carbon atoms, most preferably 1 1 to 15 carbon atoms, for example 9 to 1 1, 12 to 15 or 13 to 15 carbon atoms, can be used accordingly.

acid

The agent according to the invention contains one or more acids, which on the one hand the removal of lime and urine stone, on the other hand also the generation of carbon dioxide

Foaming serve. Suitable acids are in particular solid organic or inorganic acids such as amidosulfonic acid, citric acid, lactic acid, glycolic acid,

Succinic acid, glutaric acid, adipic acid, malic acid, tartaric acid and gluconic acid and mixtures thereof. The at least one acid is particularly preferably selected from the group comprising amidosulfonic acid, citric acid and mixtures thereof, particularly preferably amidosulfonic acid. The at least one acid is preferably present in an amount of 30 to 70 wt .-%, preferably 50 to 60 wt .-%, particularly preferably 55 to 58 wt .-% used.

carbonate

The agent according to the invention also contains at least one water-soluble carbonate. These may in particular be ammonium or alkali metal carbonates and / or bicarbonates. Preferably, the water-soluble carbonate is selected from the group comprising potassium carbonate, sodium carbonate, sodium bicarbonate,

Potassium bicarbonate and mixtures thereof and in particular selected from

Sodium carbonate and sodium bicarbonate and mixtures thereof. The amount of carbonate is chosen so that after complete C0 ₂ development enough acid for the removal of lime, urine scale and rust deposits available. The agent therefore preferably contains only so much carbonate that not more than 80%, particularly preferably not more than 50%, of the acid equivalents are consumed for CO ₂ evolution. Accordingly, in the composition according to the invention the at least one water-soluble carbonate in an amount of 10 to 50 wt .-%, preferably 20 to 40 wt .-%, particularly preferably 23 to 35 wt .-% contained

biocide

As a further ingredient, the agent according to the invention contains at least one biocide. Among the known antimicrobial active ingredients are in particular those from the groups of alcohols, aldehydes, antimicrobial acids or their salts, carboxylic acid esters,

Acid amides, phenols, phenol derivatives, diphenyls, diphenylalkanes, urea derivatives, oxygen, nitrogen acetals and formals, benzamidines, isothiazoles and their derivatives such as isothiazolines and isothiazolinones, phthalimide derivatives, pyridine derivatives, antimicrobial surface active compounds, guanidines, antimicrobial amphoteric compounds, quinolines, 1 , 2-dibromo-2,4-dicyanobutane, iodo-2-propynyl-butyl-carbamate, iodine, iodophores and peroxides which are solid and water-soluble. Preferably, the at least one biocide is an antimicrobially active carboxylic acid or its salt. Benzoic acid, salicylic acid, their salts and mixtures thereof are particularly suitable as such. Salicylic acid is particularly preferably used as biocide. The at least one biocide is preferably contained in an amount of 0.1 to 10 wt .-%, preferably 0.8 to 3 wt .-%, particularly preferably 1 to 2.5 wt .-%.

surfactants

The agent according to the invention may further contain one or more surfactants to assist the cleaning action. These are preferably selected from the group of anionic surfactants, nonionic surfactants and mixtures thereof. Preferably, surfactants are present in an amount of up to 10 wt .-%, preferably 0.1 to 5 wt .-%, particularly preferably 1 to 4 wt .-%. As anionic surfactants are especially aliphatic sulfates such as fatty alcohol sulfates,

Fatty alcohol ether sulfates, dialkyl ether sulfates, monoglyceride sulfates and aliphatic sulfonates such as alkanesulfonates, olefin sulfonates, ether sulfonates, n-alkyl ether sulfonates, ester sulfonates and lignosulfonates. Also usable in the context of the present invention are alkylbenzenesulfonates, fatty acid cyanamides, sulfosuccinates (sulfosuccinic esters), in particular sulfosuccinic mono- and di-C ₈ -C ₈ -alkyl esters, sulfosuccinamates,

Sulfosuccinamides, fatty acid isethionates, acylaminoalkanesulfonates (fatty acid taurides),

Fatty acid sarcosinates, ether carboxylic acids and alkyl (ether) phosphates and α-sulfofatty acid salts, acylglutamates, monoglyceride disulfates and alkyl ethers of glycerol disulfate.

Preferred in the context of the present invention are the fatty alcohol sulfates and / or

Fatty alcohol ether sulfates, in particular the fatty alcohol sulfates. Fatty alcohol sulfates are products of sulfation reactions on corresponding alcohols, while fatty alcohol ether sulfates are products of sulfation reactions on alkoxylated alcohols. The person skilled in the art generally understands, under alkoxylated alcohols, the reaction products of alkylene oxide, preferably ethylene oxide, with alcohols, in the context of the present invention preferably with longer-chain alcohols. As a rule, n moles of ethylene oxide and one mole of alcohol, depending on the

Reaction conditions, a complex mixture of addition products of different degrees of ethoxylation. Another embodiment of the alkoxylation is the use of mixtures of the alkylene oxides, preferably the mixture of ethylene oxide and propylene oxide.

Preferred fatty alcohol ether sulfates are the sulfates of lower ethoxylated fatty alcohols with 1 to 4 ethylene oxide units (EO), in particular 1 to 2 EO, for example 1.3 EO. Both

Alkylbenzenesulfonates are particularly preferred those having about 12 carbon atoms in the alkyl moiety, such as linear sodium C10-13 alkyl benzene sulfonate. Preferred olefin sulfonates have a

Carbon chain length of 14 to 16 on.

The anionic surfactants are preferably used as sodium salts, but may also be present as other alkali metal or alkaline earth metal salts, for example magnesium salts, and in the form of ammonium or mono-, di-, tri- or tetraalkylammonium salts, in the case of the sulfonates also in the form their corresponding acid, eg Dodecylbenzenesulfonic.

Nonionic surfactants in the invention may be alkoxylates such as polyglycol ethers, fatty alcohol polyglycol ethers, alkylphenol polyglycol ethers, end-capped polyglycol ethers, mixed ethers and hydroxy mixed ethers and fatty acid polyglycol esters. Also useful are ethylene oxide / propylene oxide block polymers, fatty acid alkanolamides, and fatty acid polyglycol ethers. Another important class of nonionic surfactants which can be used according to the invention are the polyol surfactants, in particular the glycerides, such as alkyl polyglycosides and fatty acid glucamides. Particularly preferred are the alkyl polyglycosides, in particular the

Alkyl polyglucosides, and especially the fatty alcohol alkoxylates (fatty alcohol polyglycol ethers). Preferred fatty alcohol alkoxylates are alkoxylated, unbranched or branched, saturated or unsaturated C ₈ with ethylene oxide (EO) and / or propylene oxide (PO). ₂₂ alcohols with a degree of alkoxylation up to 30, preferably ethoxylated C ₂ _ ₂₂ fatty alcohols with a

Degree of ethoxylation of less than 30, preferably 12 to 28, in particular 20 to 28, particularly preferably 25, for example C ₆ . _8- fatty alcohol ethoxylates with 25 EO.

Alkylpolyglycosides are surfactants which can be obtained by the reaction of sugars and alcohols according to the relevant processes of preparative organic chemistry, wherein, depending on the nature of the preparation, a mixture of monoalkylated, oligomeric or polymeric sugars is obtained. Preferred alkyl polyglycosides are the alkyl polyglucosides, the alcohol particularly preferably being a long-chain fatty alcohol or a mixture of long-chain fatty alcohols with branched or unbranched C ₈ - to C ₈ -alkyl chains and the degree of oligomerization (DP) of the sugars between 1 and 10, preferably 1 to 6, in particular 1, 1 to 3, more preferably 1, 1 to 1, 7, is, for example, C ₈ . _0- alkyl-1 .5-glucoside (DP of 1, 5).

bleach

One or more bleaching agents can furthermore be added to the cleaning agent according to the invention. Suitable bleaching agents include peroxides, percarbonates, peracids, for example peroxyoctanoic acid, hydrogen peroxide (H ₂ O ₂ ), potassium peroxomonosulfate,

Magnesium monoperoxyphthalate, PAP and / or perborates are particularly preferred

Percarbonates. Chlorine bleaches such as sodium dichloroisocyanurate or sodium hypochlorite are also suitable bleaching agents.

Other ingredients

The cleaning agent according to the invention can as further ingredients one or more other common ingredients of toilet detergents and other cleaning agents for hard

Surfaces included. These are preferably selected from the group comprising

Corrosion inhibitors, perfumes, dyes, enzymes, builders, fillers, powder aids and mixtures thereof

corrosion inhibitors

Suitable corrosion inhibitors (INCI Corrosion Inhibitors) are, for example, the following named according to INCI: Cyclohexylamine, Diammonium Phosphate, Dilithium Oxalate, Dimethylamino Methylpropanol, Dipotassium Oxalate, Dipotassium Phosphate, Disodium

Phosphates, disodium pyrophosphates, disodium tetrapropenyl succinates, hexoxyethyl

Diethylammonium, Phosphates, Nitromethanes, Potassium Silicate, Sodium Aluminate, Sodium Hexametaphosphate, Sodium Metasilicate, Sodium Molybdate, Sodium Nitrites, Sodium Oxalate, Sodium Silicate, Stearamidopropyl Dimethicone, Tetrapotassium Pyrophosphate, Tetrasodium Pyrophosphate, Triisopropanolamine.

The agent used in the process according to the invention may contain one or more fragrances (perfumes), preferably in an amount of from 0.01 to 2% by weight, in particular from 0.02 to 0.8% by weight. %, particularly preferably 0.05 to 0.5 wt .-%, and / or one or more dyes (INCI Colorants), preferably in an amount of 0.0001 to 0.1 wt .-%, in particular 0.0005 bis 0.05 wt .-%, particularly preferably 0.001 to 0.01 wt .-%, contained.

The agent used in the method of the invention may also contain enzymes, preferably proteases, lipases, amylases, hydrolases and / or cellulases. They can be added to the composition according to the invention in any form established according to the prior art. Alternatively, the enzymes may be encapsulated, for example by spray-drying or extruding the enzyme solution together with a preferably natural polymer or in the form of capsules, for example those in which the enzymes are entrapped as in a solidified gel or in core-shell type in which an enzyme-containing core is coated with a water, air and / or chemical impermeable protective layer. In deposited layers, further active ingredients, for example stabilizers, emulsifiers, pigments, bleaches or dyes, may additionally be applied. Such capsules are applied by methods known per se, for example by shaking or rolling granulation or in fluid-bed processes. Advantageously, such granules, for example by applying polymeric film-forming agent, low in dust and storage stable due to the coating. In addition, enzyme stabilizers may be present in enzyme-containing agents in order to protect an enzyme contained in an agent according to the invention from damage such as, for example, inactivation, denaturation or decomposition, for example by physical influences, oxidation or proteolytic cleavage. Suitable enzyme stabilizers, depending in each case on the enzyme used, are in particular: benzamidine hydrochloride, borax, boric acids, boronic acids or their salts or esters, in particular derivatives with aromatic groups, for example substituted ones

Phenylboronic acids or their salts or esters; Peptide aldehydes (oligopeptides with reduced C-terminus), amino alcohols such as mono-, di-, triethanol- and -propanolamine and mixtures thereof, aliphatic carboxylic acids up to C ₂ , such as succinic acid, others

Dicarboxylic acids or salts of said acids; end-capped

Fatty acid; lower aliphatic alcohols and especially polyols, for example glycerol, ethylene glycol, propylene glycol or sorbitol; and reducing agents and antioxidants such as sodium sulfite and reducing sugars. Other suitable stabilizers are known in the art. Combinations of stabilizers are preferably used, for example the combination of polyols, boric acid and / or borax, the combination of boric acid or borate, reducing salts and succinic acid or other dicarboxylic acids or

Combination of boric acid or borate with polyols or polyamino compounds and with reducing salts

Builder

The agent according to the invention can furthermore contain all builders customarily used in detergents and cleaners, in particular crystalline amorphous phyllosilicates

Sodium silicates, zeolites, carbonates, organic cobuilders and also alkali metal phosphates. fillers

Furthermore, the agent according to the invention may contain fillers. As such are primarily salts, such as sodium sulfate.

powder aids

To reduce the tendency to dust and to improve the powder properties, the agent according to the invention may contain further auxiliaries. As such, for example, paraffins and / or polyethylene glycols can serve. In order not to impair the flowability at the same time, such auxiliaries are preferably present in amounts of at most 1 wt .-%, more preferably up to 0.5 wt .-%. PH value

The agent according to the invention has an acidic pH due to the acid contained. The pH of a ten percent solution of the agent in water is more preferably 1 to 4, preferably 1, 2 to 3.5 and especially 1, 4 to 3.2.

use

The agent according to the invention is used for the disinfecting cleaning of flushing toilets. On contact with water, the acid and the water-soluble carbonate react with each other to form carbon dioxide, so that a self-active foam is formed. The

remaining acid leads to an excellent Kalklöseleistung, also acts the agent by the containing biocide disinfecting.

Furthermore, the agent according to the invention is used in a special embodiment for cleaning washing machines, in particular single-use drawers. In this case, the agent can be placed in the Einspülschublade and then mixed with a little water, so that the foam development begins. After a preferably approximately ten-minute waiting period, a washing program is then started with empty laundry drum. The resulting foam automatically fills the space in the dispenser, thereby cleaning and

Disinfection, and can then remove in the washing machine biofilms, calcium deposits and other soiling.

embodiments

Inventive compositions E1 to E4 and a comparative formulation V1 were prepared. The compositions are listed in the table below

All amounts are in wt .-% active material.

Subsequently, the microbiological properties as well as the leaching properties of the agents were investigated.

The compositions of the invention all showed improved laking properties compared to the comparative formulation. Most effective was E1, followed by E4, E3 and E2. In the EN 1276 test, which tests the antimicrobial resistance to bacteria, the agents according to the invention showed improved efficacy compared to V1, and also in the EN 1650 test, in which the fungicidal action against Candida albicans and Aspergillus niger is tested. Here was the

Comparison formulation completely ineffective.

Claims

claims

1 . Powdered detergent containing at least one acid and at least one water-soluble carbonate, characterized in that it further contains at least one biocide.

2. Powdered detergent according to claim 1, characterized in that the

at least one acid is preferably selected from the group comprising

Amidosulfonic acid, citric acid and mixtures thereof.

3. Powdery detergent according to one of claims 1 and 2, characterized

in that the at least one water-soluble carbonate is preferably selected from the group comprising potassium carbonate, sodium carbonate, sodium bicarbonate, potassium bicarbonate and mixtures thereof and in particular selected from sodium carbonate and sodium bicarbonate and mixtures thereof.

4. Powdered detergent according to one of claims 1 to 3, characterized in that the at least one acid in an amount of 30 to 70 wt .-%, preferably 50 to 60 wt .-%, particularly preferably 55 to 58 wt .-% is included.

5. Powdery detergent according to one of the preceding claims, characterized in that the at least one water-soluble carbonate in an amount of 10 to 50 wt .-%, preferably 20 to 40 wt .-%, particularly preferably 23 to 35 wt .-% is.

6. Powdered detergent according to one of the preceding claims, characterized in that the at least one biocide is preferably an antimicrobially active carboxylic acid, particularly preferably salicylic acid.

7. Powdery detergent according to one of the preceding claims, characterized in that the at least one biocide in an amount of 0.1 to 10 wt .-%, preferably 0.8 to 3 wt .-%, particularly preferably 1 to 2.5 Wt .-% is included.

8. Powdery detergent according to one of the preceding claims, characterized in that it contains one or more surfactants.

9. Powdery detergent according to one of the preceding claims, characterized in that it contains one or more bleaching agents. Powder-shaped detergent according to one of the preceding claims, characterized in that it contains one or more further conventional ingredients of toilet detergents and other hard surface cleaners, preferably selected from the group comprising corrosion inhibitors, perfumes, dyes, enzymes, builders, Fillers, powder additives and mixtures thereof.

1 1 .Verwendung a powdery detergent according to one of the preceding

Claims for the disinfecting cleaning of flush toilets.

12. Use of a powdery detergent according to one of claims 1 to 10 for the disinfecting cleaning of washing machines, in particular washing machine Einspülkammern