EP2804941A1 - Hard surface cleaning composition with foam boo - Google Patents

Hard surface cleaning composition with foam boo

Info

Publication number
EP2804941A1
EP2804941A1 EP12809727.6A EP12809727A EP2804941A1 EP 2804941 A1 EP2804941 A1 EP 2804941A1 EP 12809727 A EP12809727 A EP 12809727A EP 2804941 A1 EP2804941 A1 EP 2804941A1
Authority
EP
European Patent Office
Prior art keywords
alkyl
cleaning composition
toilet
composition according
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12809727.6A
Other languages
German (de)
French (fr)
Other versions
EP2804941B1 (en
Inventor
Luca Ciceri
Nicola DELLA VALLE
Anna FARAONE
Gianluca Lucchini
Maria TRINCHERA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP12809727.6A priority Critical patent/EP2804941B1/en
Publication of EP2804941A1 publication Critical patent/EP2804941A1/en
Application granted granted Critical
Publication of EP2804941B1 publication Critical patent/EP2804941B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C11D10/047—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap based on cationic surface-active compounds and soap
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0056—Lavatory cleansing blocks
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/40—Monoamines or polyamines; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/42—Amino alcohols or amino ethers
    • C11D1/44—Ethers of polyoxyalkylenes with amino alcohols; Condensation products of epoxyalkanes with amines

Definitions

  • the present invention relates to hard surface cleaning
  • compositions and their use.
  • the invention relates to hard surface cleaning compositions in the form of a toilet block. Background of the invention
  • Hard surface cleaning blocks such as lavatory blocks are known in the art and are typically configured to provide an automatic and sustained release of active ingredients to a liquid passing the block and/or the release of perfume to the air.
  • they may be suspended in a container under the rim of a lavatory bowl or urinal such that, during a flushing cycle, water from the cistern flows over the block thereby dissolving a portion of the block and releasing active ingredients of the block into the lavatory bowl. They may also be used inside a dish washing machine or even for the purpose of manual
  • Holders for solid detergent blocks are for instance disclosed in EP-B1-586 137.
  • An alternative to the lavatory block is a liquid dispenser device, such as the device disclosed in GB2389123.
  • hard surface cleaning blocks in different forms are disclosed in the art. Solid blocks in a holder are for instance disclosed in EP-B1-553 162.
  • the hard surface cleaning composition can even be applied directly onto the surface as disclosed in EP-Al-1, 086, 199, where a self adhesive paste is disclosed.
  • WO-2008/058853 discloses a detergent composition comprising an adhesive phase.
  • toilet blocks containing fatty acid soap often hardly show any foaming behavior.
  • an object of the present invention is to provide a hard surface cleaning composition in the form of a toilet block that comprises fatty acid soap and has, in use, favorable foaming behavior.
  • composition rinses away in a number of flushes, and releases a hygiene agent at a rate sufficient to provide adequate hygiene throughout the operating life of the toilet block.
  • said toilet block can be produced in a simple way and is aesthetically pleasing.
  • a hard surface cleaning composition in the form of a toilet block comprising fatty acid soap, a co- surfactant and a long chain alkyl triamine according to the present invention.
  • the present invention provides a hard surface cleaning composition in the form of a toilet block, wherein the composition comprises fatty acid soap, a co- surfactant; and from 1 to 30% by weight of a foam boosting and stabilizing ingredient selected from the group consisting of C8-C20 alkyl dialkylene triamines, C8-C20 alkyl triamines, ethoxylated amines based on coco and tallow alkyl chain having 5 to 50 ethylene oxide units, ethoxylated diamines selected from C 10 -C2 0 alkyl diamine propanes with 5 to 30 ethylene oxide units, and mixtures thereof.
  • a foam boosting and stabilizing ingredient selected from the group consisting of C8-C20 alkyl dialkylene triamines, C8-C20 alkyl triamines, ethoxylated amines based on coco and tallow alkyl chain having 5 to 50 ethylene oxide units, ethoxylated diamines selected from C 10 -C2 0 alky
  • the invention provides a cage less lavatory cleansing device comprising a support member having a hook and adapted to be suspended from a part of a sanitary appliance, preferably the rim of a toilet bowl, and a toilet block of the invention, wherein said toilet block enrobes or encases part of the hook.
  • the invention provides a method of producing a cage less lavatory cleansing device according to the
  • the invention provides a method of cleaning the interior of a toilet bowl, comprising the steps of:
  • foam boosting and stabilizing ingredient of the present invention is known and registered as a biocide. However, it has been found in the context of the present invention that such compound can be favorably used as a foam boosting and stabilizing ingredient in a cleaning composition of the invention which is in the form of a toilet block.
  • the foam boosting action by the foam boosting and stabilizing ingredient of the invention generally more than compensates the de-foaming action by the fatty acid soap which is also present in the composition of the invention. As a result, when said cleaning composition is used for
  • foam boosting and stabilizing ingredient of the invention is selected from the group consisting of
  • C8- C20 alkyl dialkylene triamines C8- C20 alkyl triamines, and mixtures thereof.
  • the foam booster and stabilizing ingredient of the invention is selected from the group consisting of C8- C20 alkyl triamines, C8- C20 alkyl dipropylene triamines, C8- C20 alkyl diethylene triamine and mixtures thereof.
  • Most preferred types of said foam booster and stabilizing ingredient are selected from Cio alkyl dipropylene triamine, C 1 2 alkyl dipropylene triamine and mixtures thereof. It was found that these types of long chain triamine provide the best results in terms of stable foam.
  • Said foam booster and stabilizing ingredient is preferably present in the cleaning composition of the invention at a concentration of from 1 to 20%, more preferably from 2 to 8%, by weight.
  • the fatty acid soap is present in the cleaning composition of the invention as a surfactant. It is also present for providing the desired transparency of the cleaning composition of the invention .
  • the fatty acid soap is preferably selected from long chain fatty acid soaps having a C 1 0-C20 alkyl group.
  • the most preferred type of said fatty acid soap for use in the composition of the invention is selected from sodium laurate, sodium stearate, sodium oleate, sodium palmate and mixtures thereof .
  • the level of the fatty acid soap in the cleaning composition of the invention is in the range of from 10 to 70%, more preferably from 20 to 70%, by weight.
  • the co-surfactant is preferably present in the composition of the invention at a concentration of from 5 to 50% by weight.
  • Said co-surfactant may generally be chosen from anionic, nonionic, cationic, amphoteric/zwitterionic surfactants and mixtures thereof.
  • the co-surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric surfactants and mixtures thereof.
  • anionic surfactants'' is meant to be an indication of synthetic anionic surfactants other than soap.
  • Suitable synthetic (non-soap) anionic surfactants are water soluble salts of organic sulphuric acid mono-esters and
  • anionic surfactants water soluble salts of:
  • PAS primary long chain alcohol sulphates
  • alkyl benzene sulphonates such as those in which the
  • alkyl group contains from 6 to 20 carbon atoms
  • alkylglyceryl ether sulphates especially of the ethers of fatty alcohols derived from tallow and coconut oil;
  • alkylphenol ethylenoxy-ether sulphates with from 1 to 8 ethyleneoxy units per molecule and in which the alkyl groups contain from 4 to 14 carbon atoms; • the reaction product of fatty acids esterified isethionic acid and neutralised with alkali,
  • the preferred water-soluble synthetic anionic surfactants are the alkali metal (such as sodium and potassium) salts of alkyl- benzenesulphonates , olefin sulphonates, alkyl sulphates, and the fatty acid mono-glyceride sulphates. Because of their favorable foaming behavior in the presence of the long chain triamine used in the present invention, olefin sulfonates represent the most preferred type of anionic surfactants.
  • t concentration of the anionic surfactant is preferably from 5 15% by weight.
  • a suitable class of nonionic surfactants can be broadly any suitable class of nonionic surfactants.
  • hydrophilic or polyoxyalkylene chain which is attached to any particular hydrophobic group can be readily adjusted to yield a compound having the desired balance between hydrophilic and hydrophobic elements. This enables the choice of nonionic surfactants with the right HLB .
  • nonionic surfactants with the right HLB .
  • Particular examples include:
  • ethylene oxide such as a coconut alcohol/ethylene oxide condensates having from 2 to 15 moles of ethylene oxide per mole of coconut alcohol;
  • condensates of the reaction product of ethylene-diamine and propylene oxide with ethylene oxide the condensates containing from 40 to 80% of ethyleneoxy groups by weight and having a molecular weight of from 5,000 to 11,000.
  • ethoxylated alcohols having 5-8 moles of ethylene oxide per mole of alcohol and an a C9-C11 alkyl chain are the most preferred type of nonionic surfactants.
  • amphoteric surfactant can be used:
  • ⁇ tertiary amine oxides of structure R 1 R 2 R 3 N-0 where R 1 is an alkyl group of 8 to 20 carbon atoms and R 2 and R 3 are each alkyl or hydroxyalkyl groups of 1 to 3 carbon atoms, e.g. C12-C18-alkyldimethyl amineoxides.
  • the concentration of the nonionic surfactant is preferably from 5 to 15% by weight.
  • the cleaning composition of the invention may optionally contain biocide material other than the foam booster and stabilizing ingredient of the invention.
  • Said biocide material is preferably selected from CTAC (cetyl trimethyl ammonium chloride) , and BAC (benzalkonium chloride) and didecyldimethylammonium chloride, dodecyldipropylene triamine and poly (hexamethylenebiguanide) hydrochloride.
  • CTAC cetyl trimethyl ammonium chloride
  • BAC benzalkonium chloride
  • BAC is the most preferred type of biocide.
  • quaternary ammonium biocide having at least one alkyl chain with a length of at least 14 carbon atoms (C14) show a better biocidal effect than the quaternary ammonium biocides having a shorter chain.
  • the preferred chain length is C14-C16, more preferably a mixture of C14-C16, with 80-98%w of C14.
  • composition of the invention is preferably 1 to 30 ⁇ 6 , more preferably 5 to 25%, by weight.
  • inventions may further comprise builders, dyes, perfume, hygiene agents, antioxidants, radical scavengers, chelating agents, hydrotropes, anticorrosion agents, opacifiers, brighteners, preservatives and/or abrasives such as silica, kaolin, talc etc .
  • Perfume is preferably present in the cleaning composition of the invention, in a preferred concentration of 2 to 15% by weight .
  • composition may preferably comprise humectant.
  • Humectants maintain both structure and clarity. When present, said
  • humectants will enable retention of water within the toilet block formulation of the invention.
  • Preferred humectants are polyhydroxylated organic compounds, such as sorbitol and sucrose.
  • the solvents glycerol and polyethylene glycol (PEG) are also suitable as humectants .
  • the humectant may be present in a concentration of 0 to 50% by weight of the composition.
  • the humectant is preferably present in a concentration of at least 5%, but preferably not more than 40%, more preferably not more than 30%.
  • Solvents may also be present in the composition.
  • Preferred solvents include poly alkylene glycols (e.g. PEG, PPG) and short chain organic solvents (e.g. ethanol or isopropanol) .
  • the solvent may be present in the composition in a
  • concentration 0 to 20%, preferably 1-15% by weight of the composition .
  • the shape of the hard surface cleaning composition of the invention is preferably hydrodynamic, as this will help in better control of the erosion properties of the block.
  • composition life is directly related to its formulation and the size.
  • a normal size toilet block is between about 4 and 50 grams, preferably about 4 to 35 g.
  • a toilet block that is at least partially transparent or translucent.
  • at least partially transparent or translucent is meant that a 1 cm thick sample of the material transmits at least 5% of visible light, preferably at least 20% of visible light, more preferably at least 50% of visible light. More preferably the block is transparent.
  • transparent is meant that a 1 cm thick sample of the block transmits at least 70% of visible light, preferably at least 90%. Due to the presence of a dye, and almost inevitable absorption and/or scattering of some of the light, the
  • the cleaning composition is preferably in the form of a cast toilet block.
  • the toilet block of the invention is present in a cage-less lavatory cleansing device, comprising -in addition to said toilet block- a support member having a hook and adapted to be suspended from the rim of a toilet bowl, whereby the block enrobes or encases part of the hook, preferably the lower part thereof.
  • a cage-less lavatory cleansing device comprising -in addition to said toilet block- a support member having a hook and adapted to be suspended from the rim of a toilet bowl, whereby the block enrobes or encases part of the hook, preferably the lower part thereof.
  • formulations is a mixture of N, -Bis ( 3-aminopropyl )
  • Neodol 91-8 0 8.0 8.0
  • Bioterge AS90 Alpha olefin sulfonate (C14-C16) , ex Stepan Company .
  • Neodol 91-8 ethoxylated alcohol (C9-11), ex Shell.
  • block C is the only toilet block that is according to the invention.
  • Block A only contains a soap base whereas block B contains a soap base, some co-surfactants, perfume and minors.
  • a transparent graduated cylinder was filled with 200 ml water having a temperature of 18°C and a water hardness of 8-9 °F; - one of the toilet blocks A, B or C (having a weight of 5 grams) was sunk into the thus-filled cylinder;
  • said foam height was measured at 0 seconds (i.e. immediately after stopping the rotation) , at 60 seconds, and at 120 seconds .

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

The present invention provides a hard surface cleaning composition in the form of a toilet block, wherein the composition comprises fatty acid soap, a co-surfactant and from 1 to 30% by weight of a foam booster and stabilizing ingredient. Preferably, said ingredient is selected from the group consisting of C8-C20 alkyl triamines, C8-C20 alkyl dipropylene triamines, C8-C20 alkyl diethylene triamines and mixtures thereof. The invention also provides a cage-less lavatory cleansing device comprising a toilet block of the invention and a method of producing said device. The invention further provides a method of cleaning the interior of a toilet bowl.

Description

HARD SURFACE CLEANING COMPOSITION WITH FOAM BOO
Field of the invention
The present invention relates to hard surface cleaning
compositions, and their use. In particular, the invention relates to hard surface cleaning compositions in the form of a toilet block. Background of the invention
Hard surface cleaning blocks, such as lavatory blocks are known in the art and are typically configured to provide an automatic and sustained release of active ingredients to a liquid passing the block and/or the release of perfume to the air. For
example, they may be suspended in a container under the rim of a lavatory bowl or urinal such that, during a flushing cycle, water from the cistern flows over the block thereby dissolving a portion of the block and releasing active ingredients of the block into the lavatory bowl. They may also be used inside a dish washing machine or even for the purpose of manual
dishwashing .
Different means of applying blocks to a toilet have been disclosed in the art. Holders for solid detergent blocks are for instance disclosed in EP-B1-586 137. An alternative to the lavatory block is a liquid dispenser device, such as the device disclosed in GB2389123.
Furthermore, hard surface cleaning blocks in different forms are disclosed in the art. Solid blocks in a holder are for instance disclosed in EP-B1-553 162. The hard surface cleaning composition can even be applied directly onto the surface as disclosed in EP-Al-1, 086, 199, where a self adhesive paste is disclosed. Alternatively, WO-2008/058853 discloses a detergent composition comprising an adhesive phase.
In these and other hard surface cleaning blocks, the delivery of perfume to a room is the main objective.
On the other hand, many known hard surface cleaning blocks have the effective cleaning of the lavatory appliance, in particular the toilet bowl, as their main characteristic.
In this connection, it is desirable that not only effective cleaning is obtained but also a significant amount of foam is produced when the toilet is flushed and water flows around the toilet block.
Reason is that formation of foam supports the cleaning
performance of the toilet block. Furthermore, said foam
formation is aesthetically pleasing for the user and gives the impression of effective cleaning.
However, it has been found that the foaming behavior of toilet blocks of the prior art often leaves to be desired. In
particular, toilet blocks containing fatty acid soap often hardly show any foaming behavior.
In this connection, an object of the present invention is to provide a hard surface cleaning composition in the form of a toilet block that comprises fatty acid soap and has, in use, favorable foaming behavior.
It is a further object that said hard surface cleaning
composition rinses away in a number of flushes, and releases a hygiene agent at a rate sufficient to provide adequate hygiene throughout the operating life of the toilet block.
It is another object that said toilet block can be produced in a simple way and is aesthetically pleasing. We have surprisingly found that at least one of these objects is achieved when using a hard surface cleaning composition in the form of a toilet block, comprising fatty acid soap, a co- surfactant and a long chain alkyl triamine according to the present invention.
Definition of the invention
Accordingly, in one aspect the present invention provides a hard surface cleaning composition in the form of a toilet block, wherein the composition comprises fatty acid soap, a co- surfactant; and from 1 to 30% by weight of a foam boosting and stabilizing ingredient selected from the group consisting of C8-C20 alkyl dialkylene triamines, C8-C20 alkyl triamines, ethoxylated amines based on coco and tallow alkyl chain having 5 to 50 ethylene oxide units, ethoxylated diamines selected from C10-C20 alkyl diamine propanes with 5 to 30 ethylene oxide units, and mixtures thereof.
In a second aspect, the invention provides a cage less lavatory cleansing device comprising a support member having a hook and adapted to be suspended from a part of a sanitary appliance, preferably the rim of a toilet bowl, and a toilet block of the invention, wherein said toilet block enrobes or encases part of the hook.
In a third aspect, the invention provides a method of producing a cage less lavatory cleansing device according to the
invention, wherein said method comprises the steps of:
(a) introducing into a cavity of a mould at least a portion of the support member and a molten mass, and
(b) allowing the molten mass to solidify so as to form a toilet block having a composition according to any of claims 1-9. In a fourth aspect, the invention provides a method of cleaning the interior of a toilet bowl, comprising the steps of:
(i) Providing a cage less lavatory cleansing device of the invention ;
(ii) Suspending said device from the rim of a toilet bowl, and (iii) Periodically flushing water about the exterior of the toilet block present in said cleansing device so as to dissolve part of said toilet block with said water. Detailed description of the invention
At least one triamine compound which is covered by the
definition of the foam boosting and stabilizing ingredient of the present invention is known and registered as a biocide. However, it has been found in the context of the present invention that such compound can be favorably used as a foam boosting and stabilizing ingredient in a cleaning composition of the invention which is in the form of a toilet block.
It was also found that the foam boosting action by the foam boosting and stabilizing ingredient of the invention generally more than compensates the de-foaming action by the fatty acid soap which is also present in the composition of the invention. As a result, when said cleaning composition is used for
cleaning a toilet, a significant amount of foam is produced at every flush of the toilet.
Preferably the foam boosting and stabilizing ingredient of the invention is selected from the group consisting of
C8- C20 alkyl dialkylene triamines, C8- C20 alkyl triamines, and mixtures thereof.
More preferably, the foam booster and stabilizing ingredient of the invention is selected from the group consisting of C8- C20 alkyl triamines, C8- C20 alkyl dipropylene triamines, C8- C20 alkyl diethylene triamine and mixtures thereof. Most preferred types of said foam booster and stabilizing ingredient are selected from Cio alkyl dipropylene triamine, C12 alkyl dipropylene triamine and mixtures thereof. It was found that these types of long chain triamine provide the best results in terms of stable foam.
Said foam booster and stabilizing ingredient is preferably present in the cleaning composition of the invention at a concentration of from 1 to 20%, more preferably from 2 to 8%, by weight.
The fatty acid soap
The fatty acid soap is present in the cleaning composition of the invention as a surfactant. It is also present for providing the desired transparency of the cleaning composition of the invention .
The fatty acid soap is preferably selected from long chain fatty acid soaps having a C10-C20 alkyl group.
The most preferred type of said fatty acid soap for use in the composition of the invention is selected from sodium laurate, sodium stearate, sodium oleate, sodium palmate and mixtures thereof .
Preferably, the level of the fatty acid soap in the cleaning composition of the invention is in the range of from 10 to 70%, more preferably from 20 to 70%, by weight.
The co-surfactant
The co-surfactant is preferably present in the composition of the invention at a concentration of from 5 to 50% by weight. Said co-surfactant may generally be chosen from anionic, nonionic, cationic, amphoteric/zwitterionic surfactants and mixtures thereof. Preferably, the co-surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric surfactants and mixtures thereof. In this
connection, the term anionic surfactants'' is meant to be an indication of synthetic anionic surfactants other than soap.
Suitable synthetic (non-soap) anionic surfactants are water soluble salts of organic sulphuric acid mono-esters and
sulphonic acids which have in the molecular structure a
branched or straight chain alkyl group containing from 6 to carbon atoms in the alkyl part.
Examples of such anionic surfactants are water soluble salts of:
• (primary) long chain (e.g. 6-22 C-atoms) alcohol sulphates (hereinafter referred to as PAS) , especially those
obtained by sulphating the fatty alcohols produced by reducing the glycerides of tallow or coconut oil;
• alkyl benzene sulphonates, such as those in which the
alkyl group contains from 6 to 20 carbon atoms;
• secondary alkanesulphonates ;
and mixtures thereof.
Also suitable are the salts of:
· alkylglyceryl ether sulphates, especially of the ethers of fatty alcohols derived from tallow and coconut oil;
• fatty acid monoglyceride sulphates;
• sulphates of ethoxylated aliphatic alcohols containing 1- 12 ethyleneoxy groups;
· alkylphenol ethylenoxy-ether sulphates with from 1 to 8 ethyleneoxy units per molecule and in which the alkyl groups contain from 4 to 14 carbon atoms; • the reaction product of fatty acids esterified isethionic acid and neutralised with alkali,
and mixtures thereof. The preferred water-soluble synthetic anionic surfactants are the alkali metal (such as sodium and potassium) salts of alkyl- benzenesulphonates , olefin sulphonates, alkyl sulphates, and the fatty acid mono-glyceride sulphates. Because of their favorable foaming behavior in the presence of the long chain triamine used in the present invention, olefin sulfonates represent the most preferred type of anionic surfactants.
When present in the cleaning composition of the invention, t concentration of the anionic surfactant is preferably from 5 15% by weight.
A suitable class of nonionic surfactants can be broadly
described as compounds produced by the condensation of simple alkylene oxides, which are hydrophilic in nature, with an aliphatic or alkyl-aromatic hydrophobic compound having a reactive hydrogen atom. The length of the hydrophilic or polyoxyalkylene chain which is attached to any particular hydrophobic group can be readily adjusted to yield a compound having the desired balance between hydrophilic and hydrophobic elements. This enables the choice of nonionic surfactants with the right HLB . Particular examples include:
• the condensation products of aliphatic alcohols having
from 8 to 22 carbon atoms in either straight or branched chain configuration with ethylene oxide, such as a coconut alcohol/ethylene oxide condensates having from 2 to 15 moles of ethylene oxide per mole of coconut alcohol;
• condensates of alkylphenols having C6-C15 alkyl groups with 5 to 25 moles of ethylene oxide per mole of alkylphenol ;
• condensates of the reaction product of ethylene-diamine and propylene oxide with ethylene oxide, the condensates containing from 40 to 80% of ethyleneoxy groups by weight and having a molecular weight of from 5,000 to 11,000.
In view of their favourable foaming behavior, ethoxylated alcohols having 5-8 moles of ethylene oxide per mole of alcohol and an a C9-C11 alkyl chain are the most preferred type of nonionic surfactants.
Alternatively or additionally, the following class of
amphoteric surfactant can be used:
· tertiary amine oxides of structure R1R2R3N-0, where R1 is an alkyl group of 8 to 20 carbon atoms and R2 and R3 are each alkyl or hydroxyalkyl groups of 1 to 3 carbon atoms, e.g. C12-C18-alkyldimethyl amineoxides. When present in the cleaning composition of the invention, the concentration of the nonionic surfactant is preferably from 5 to 15% by weight.
Biocide material
The cleaning composition of the invention may optionally contain biocide material other than the foam booster and stabilizing ingredient of the invention.
Said biocide material is preferably selected from CTAC (cetyl trimethyl ammonium chloride) , and BAC (benzalkonium chloride) and didecyldimethylammonium chloride, dodecyldipropylene triamine and poly (hexamethylenebiguanide) hydrochloride. BAC is the most preferred type of biocide. These quarternary ammonium biocides with different chain lengths have been found to give different hygiene properties. Surprisingly it has been observed that the hygienic properties of a quaternary ammonium biocide having at least one alkyl chain with a length of at least 14 carbon atoms (C14) show a better biocidal effect than the quaternary ammonium biocides having a shorter chain. The preferred chain length is C14-C16, more preferably a mixture of C14-C16, with 80-98%w of C14.
When present, the concentration of the biocide in the
composition of the invention is preferably 1 to 30 ~6 , more preferably 5 to 25%, by weight.
Optional ingredients
The hard surface cleaning composition according to the
invention may further comprise builders, dyes, perfume, hygiene agents, antioxidants, radical scavengers, chelating agents, hydrotropes, anticorrosion agents, opacifiers, brighteners, preservatives and/or abrasives such as silica, kaolin, talc etc .
Perfume is preferably present in the cleaning composition of the invention, in a preferred concentration of 2 to 15% by weight .
The composition may preferably comprise humectant. Humectants maintain both structure and clarity. When present, said
humectants will enable retention of water within the toilet block formulation of the invention. Preferred humectants are polyhydroxylated organic compounds, such as sorbitol and sucrose. In this connection, it is noted that the solvents glycerol and polyethylene glycol (PEG) are also suitable as humectants . The humectant may be present in a concentration of 0 to 50% by weight of the composition. The humectant is preferably present in a concentration of at least 5%, but preferably not more than 40%, more preferably not more than 30%.
Solvents may also be present in the composition. Preferred solvents include poly alkylene glycols (e.g. PEG, PPG) and short chain organic solvents (e.g. ethanol or isopropanol) . The solvent may be present in the composition in a
concentration of 0 to 20%, preferably 1-15% by weight of the composition .
Composition size and shape
The shape of the hard surface cleaning composition of the invention is preferably hydrodynamic, as this will help in better control of the erosion properties of the block.
Such hydrodynamic shape will also assist in the foaming
behaviour of the block. Thus, round, smooth shapes are
preferred over square/rectangular blocks with sharp edges, due to superior hydrodynamic behaviour.
The composition life is directly related to its formulation and the size. A normal size toilet block is between about 4 and 50 grams, preferably about 4 to 35 g.
It is preferred to provide a toilet block that is at least partially transparent or translucent. By at least partially transparent or translucent is meant that a 1 cm thick sample of the material transmits at least 5% of visible light, preferably at least 20% of visible light, more preferably at least 50% of visible light. More preferably the block is transparent. By transparent is meant that a 1 cm thick sample of the block transmits at least 70% of visible light, preferably at least 90%. Due to the presence of a dye, and almost inevitable absorption and/or scattering of some of the light, the
transmission is generally below 95% of visible light. The cleaning composition is preferably in the form of a cast toilet block.
Furthermore, in a preferred aspect the toilet block of the invention is present in a cage-less lavatory cleansing device, comprising -in addition to said toilet block- a support member having a hook and adapted to be suspended from the rim of a toilet bowl, whereby the block enrobes or encases part of the hook, preferably the lower part thereof. The present invention is illustrated by way of the following non-limiting examples.
Example 1
Toilet blocks having various formulations according to the present invention were prepared.
In Table 1, these formulations are shown
It can be noticed that the foam booster and stabilizing ingredient according to the present invention in these
formulations is a mixture of N, -Bis ( 3-aminopropyl )
dodecylamine .
Table 1
Toilet blocks having these formulations showed good performance and favorable foaming behavior when used for cleaning a toilet bowl . Example 2
In this example the foaming behaviour of 3 different toilet blocks was investigated The formulations of toilet blocks A and B are outside of the scope of the present invention whereas the formulation of toilet block C is according to the present invention .
In Table 2, these toilet block formulations are shown. Table 2
Composition of block A B C
%wt %wt %wt
Soap base 2* 100 76.9 71.9 Bioterge AS90 0 7.6 7.6
Perfume 0 3.5 3.5
Neodol 91-8 0 8.0 8.0
Empigen OD 0 4.0 4.0
Minors (dyes) 0 0.01 0.01 Triameen Y12D 0 0 5.0
Wherein :
Bioterge AS90 : Alpha olefin sulfonate (C14-C16) , ex Stepan Company .
Neodol 91-8 : ethoxylated alcohol (C9-11), ex Shell.
Empigen OD :, C12-C18 alkyl dimethylamine oxide, ex Akzo Nobel. Triameen : C12 alkyl dipropylenetriamine, ex Huntsman.
The composition of the soap base 2* is shown in Table 3. Table 3
When considering these compositions, it is clear that block C is the only toilet block that is according to the invention. Block A only contains a soap base whereas block B contains a soap base, some co-surfactants, perfume and minors.
Using these blocks A, B and C, a cylinder test was carried having the following method steps:
- a transparent graduated cylinder was filled with 200 ml water having a temperature of 18°C and a water hardness of 8-9 °F; - one of the toilet blocks A, B or C (having a weight of 5 grams) was sunk into the thus-filled cylinder;
- after a time period of 30 seconds the cylinder was rotated with a speed of 28 rpm.
- after 10 full rotations, the rotation of the cylinder was stopped , the foaming performance was evaluated by measuring the foam height.
- said foam height was measured at 0 seconds (i.e. immediately after stopping the rotation) , at 60 seconds, and at 120 seconds .
This cylinder test was carried out for each of these blocks A, B and C. All evaluations were repeated twice. In Table 4 the results in terms of the average foam he
obtained for each of the tested blocks are shown. Table 4
Foam height (in cm) , after
0 sec 60 sec 120 sec
Block A 0 0 0
Block B 1.5 0 0
Block C 5 5 5
These results clearly show that only when using block C (the only tested block which is according to the invention) a stable foam could be obtained.

Claims

Claims
1. A hard surface cleaning composition in the form of a toilet block, wherein the composition comprises fatty acid soap, a co- surfactant; and from 1 to 30% by weight of a foam boosting and stabilizing ingredient selected from the group consisting of C8- C20 alkyl dialkylene triamines, C8- C20 alkyl triamines, ethoxylated amines based on coco and tallow alkyl chain having 5 to 50 ethylene oxide units, ethoxylated diamines selected from C10 - C20 alkyl diamine propanes with 5 to 30 ethylene oxide units, and mixtures thereof.
2. Cleaning composition according to claim 1, wherein the foam booster and stabilizing ingredient is selected from the group consisting of C8- C20 alkyl triamines, C8- C20 alkyl dipropylene triamines, C8- C20 alkyl diethylene triamines and mixtures thereof .
3. Cleaning composition according to claim 2, wherein the foam boosting and stabilizing ingredient is selected from C10 alkyl dipropylene triamine, C12 alkyl dipropylene triamine and mixtures thereof.
4. Cleaning composition according to any one of claims 1- 3, wherein the co-surfactant is selected from the group consisting of nonionic surfactants, anionic surfactants, amphoteric surfactants and mixtures thereof.
5. Cleaning composition according to any of claims 1-4, wherein the co-surfactant is present in a concentration of from 5 to 50 % by weight.
6. Cleaning composition according to any of claims 1-5, wherein the fatty acid soap is selected from long chain soaps having a C10-C20 alkyl group.
7. Cleaning composition according to claim 6, wherein the fatty acid soap is selected from sodium laurate, sodium stearate, sodium oleate, sodium palmate and mixtures thereof.
8. Cleaning composition according to any of claims 1-7, wherein said composition is transparent as defined herein.
9. Cleaning composition according to any of claims 1-8, wherein said composition is in the form of a cast toilet block.
10. A cage less lavatory cleansing device, comprising a support member having a hook and adapted to be suspended from a part of the sanitary appliance, preferably the rim of a toilet bowl and a toilet block according to any of claims 1-9, wherein said toilet block enrobes or encases part of the hook.
11. Method of producing a device according to claim 10, wherein said method comprises the steps of:
(a) introducing into a cavity of a mould at least a portion of the support member and a molten mass, and
(b) allowing the molten mass to solidify so as to form a toilet block having a composition according to any of claims 1-9.
12. Method of cleaning the interior of a toilet bowl,
comprising the steps of:
(i) Providing a cage less lavatory cleansing device according to claim 10;
(ii) Suspending said device from the rim of a toilet bowl, and (iii) Periodically flushing water about the exterior of the toilet block present in said cleansing device so as to dissolve part of said toilet block with said water.
EP12809727.6A 2012-01-20 2012-12-14 Hard surface cleaning composition with foam booster Not-in-force EP2804941B1 (en)

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Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12151851 2012-01-20
EP12809727.6A EP2804941B1 (en) 2012-01-20 2012-12-14 Hard surface cleaning composition with foam booster
PCT/EP2012/075607 WO2013107576A1 (en) 2012-01-20 2012-12-14 Hard surface cleaning composition with foam boo

Publications (2)

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EP2804941A1 true EP2804941A1 (en) 2014-11-26
EP2804941B1 EP2804941B1 (en) 2016-03-30

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Publication number Priority date Publication date Assignee Title
DE102015109697A1 (en) * 2015-06-17 2016-12-22 Buck-Chemie Gmbh Piece-shaped cleaning agent for the toilet area
CN109294754A (en) * 2018-10-23 2019-02-01 湖北天喜达生物科技有限公司 Antifouling environmentally friendly greasy dirt cleanser of a kind of antibacterial and preparation method thereof

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US2267205A (en) * 1938-08-04 1941-12-23 Monsanto Chemicals Detergent
GB9022623D0 (en) 1990-10-18 1990-11-28 Univ Manchester Depth of anaesthesia monitoring
GB9217715D0 (en) 1992-08-20 1992-09-30 Unilever Plc Dispensing device
US5786312A (en) * 1996-06-12 1998-07-28 Lever Brothers Company, Division Of Conopco, Inc. Bar composition comprising copolymer mildness actives
US5728663A (en) * 1996-07-02 1998-03-17 Johnson & Johnson Consumer Products, Inc. Clear, colorless soap bar with superior mildness, lathering and discolorization resistence
DE19826293A1 (en) 1998-06-12 2000-03-23 Buck Chemie Gmbh Sanitary ware
GB2389123B (en) 2002-05-29 2005-08-17 Unilever Plc Rechargeable dispensing device
GB0311174D0 (en) * 2003-05-15 2003-06-18 Baker Brian F Anti-viral cleaning composition
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Also Published As

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CN104093826A (en) 2014-10-08
WO2013107576A1 (en) 2013-07-25
EP2804941B1 (en) 2016-03-30
PL2804941T3 (en) 2016-10-31
CN104093826B (en) 2017-12-01

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