CA2044490C - Lavatory cleansing block - Google Patents
Lavatory cleansing blockInfo
- Publication number
- CA2044490C CA2044490C CA002044490A CA2044490A CA2044490C CA 2044490 C CA2044490 C CA 2044490C CA 002044490 A CA002044490 A CA 002044490A CA 2044490 A CA2044490 A CA 2044490A CA 2044490 C CA2044490 C CA 2044490C
- Authority
- CA
- Canada
- Prior art keywords
- weight
- block according
- lavatory
- cleansing block
- lavatory cleansing
- 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.)
- Expired - Fee Related
Links
- 239000007844 bleaching agent Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000002304 perfume Substances 0.000 claims abstract description 13
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 6
- IFIDXBCRSWOUSB-UHFFFAOYSA-M potassium;1,5-dichloro-4,6-dioxo-1,3,5-triazin-2-olate Chemical group [K+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O IFIDXBCRSWOUSB-UHFFFAOYSA-M 0.000 claims abstract 2
- -1 alkali metal salt Chemical class 0.000 claims description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical compound ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- 150000004996 alkyl benzenes Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011012 sanitization Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 235000009088 Citrus pyriformis Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 244000228957 Ferula foetida Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- QCUOBSQYDGUHHT-UHFFFAOYSA-L cadmium sulfate Chemical compound [Cd+2].[O-]S([O-])(=O)=O QCUOBSQYDGUHHT-UHFFFAOYSA-L 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 239000003605 opacifier Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
-
- 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
- C11D1/02—Anionic compounds
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/1233—Carbonates, e.g. calcite or dolomite
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/395—Bleaching agents
- C11D3/3955—Organic bleaching agents
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/50—Perfumes
-
- 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
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
Landscapes
- 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)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cosmetics (AREA)
Abstract
A lavatory rim cleansing block comprising: 30 to 80 % by weight of an anionic surfactant; 0 to 50 % by weight of an inert or electrolyte filler; 5 to 50 % by weight of a water-soluble bleaching agent; 5 to 15 % by weight of a hydrophobic structurant, preferably an oily liquid perfume. The weight ratio between the anionic surfactant and the filler, if electrolytic, is preferably greater than 2 and the preferred water-soluble bleaching agent is potassium dichloro cyanurate.
Description
2044490 c 7243 (R) T~AvAToRy CT.T~'AN~::TNG BLOCK
5 The present invention is concerned with lavatory cleansing blocks and a process for making them. More in particular, it relates to ~l~An~in~ blocks which are intended for use as a cleansing, sanitizing and deodorizing block contained in a device which is hung 10 below the rim of toilet bowls. The block is thereby activated by the flush water and effects its cleaning and sanitizing action each time the bowl is f lushed with flush water from the cistern. These so-called lavatory rim blocks are not in ~o~ contact with water, as 15 distinct from the so-called in-cistern type of cleansing blocks which are constantly immersed in the f lush water cistern of lavatory bowls. It will be evident that such blocks will have - le~ly different requirements as to structure, rate of wear, cracking, mushing and swelling 20 properties, foam properties and perfume generation.
~uch lAvatory rim block~ are known in the ~ rt . For inst~nce, the Euro~e~n pntent ~r~l;c~ir~n 167,210, p..~~ h~fl ~TAnuJ~ry 8, 1986, aisclosel~ ~n extruded 25 l~v~tory rim block which i~ free from ~Ar~-dichloro benzen~, comprising 40 to 90% by weight of ~n ~nionic ~urf~ctant, 5 to 55 % by weight of ~n inert or electrolyte ~iller, ~nd 5 to 15 % by weight of an oily liquid ~erfume, the weight ratio betwQen t~e 30 ~nionic ~urfnct~nt and the filler, if electrolytic, being gre~t~r th~n 2.
Whereas such blocks have good cleansing properties, they have a very limited sanitizing effect on the micro-35 organisms which are always present in the toilet bowl.
Y
-r ~ 2044~90 2 C 7243 (R) EP-A-341836 (JEYES) discloses an extruded lavatory cleansing block with a good sanitising and cleansing effect, which block comprises an anionic surfactant and a chlorinated cuanuric acid derivative. However, this 5 block also comprises a third essential component being a source of specified metal ions, such as barium chloride, cadmium sulphate and calcium chloride, which component may be environmentally less acceptable. Furthermore, this block is especially designed to be used in the lo cistern of a lavatory.
It is an object of the present invention to provide a lavatory rim block which p..cc,,cl ~ a good cleansing, sanitizing and perfume generating activity.
15 MJ1~:UV~L, the blocks must be stable for a prolonged period under the humid conditions of a toilet bowl.
It has now been found that these and other objects may be achieved by means of the lavatory rim blocks 20 according to the invention, which comprise: 30 to 80 %
by weight of an anionic surfactant; 0 to 50 % by weight of an inert or electrolyte filler; 5 to 50 % by weight of a water-soluble hl~hing agent; 5 to 15 % by weight of a hydrophobic structurant. The weight ratio between 25 the anionic surfactant and the filler, if electrolytic, is thereby preferably greater than 2.
Surprisingly, the stability of the water-soluble hl~ .hin~ agent inside the lavatory block proved to be 30 very good, while at the same time the delivery of bleaching agent to the f lush water was more than satisfactory and constant over a prolonged period.
2 0 4 4 4 ~ 0 c 7243 ~R) The water-soluble bleaching agent used in accordance with the invention is an act:ive chlorine bleaching agent such as an alkali metal salts of dichloro cyanuric acid. The preferred water-soluble bleaching agent is potassium 5 dichlorocyanurate. The hlf~ h;ng agent is preferably present in an amount of 10 to 25 % by weight.
The blocks comprise 5-15 % by weight of a hydrophobic structurant. This is preferably a liquid oily perfume, 10 of the kind described in the European patent application 167,210, published January 8, 1986. It will be understood that the liquid oily perfume must be stable in the presence of the water-soluble bleaching agent. Suitable oily perfumes can be easily selected by testing them in 15 combination with the water-soluble bleaching agent.
Examples of suitable bleach-stable perfumes are *Verdeo 898, ~Bonanza 048 and ~Ponderosa 431 all ex IFF, and LB 132 ex Quest .
20 EIowever, the perfume may be partially or totally replaced by another hydrophobic structurant, for example fatty acids or fatty alcohols, typically having 12 to 16 carbon atoms.
The anionic surfactants which may be used in the present 25 invention include for example alkali metal salts of alkyl substituted benzene sulphonates, alkali metal long chain alkyl sulphates, alkali metal ether sulphates derived from long chain alcohols and alkyl phenols, alkali metal alkane sulphonates, alkali metal olefin sulphonates and alkali 30 metal sulphosuccinates, whereby the sodium salts are generally preferred. - Most favoured are sodium alkyl benzene sulphonates. ~
Desirably, the anionic surfactant used in the block - -~ denotes trade mark X
2~4~4~0 - 4 C 7243 (R) should have a relatively low perfume solubility and should only ab60rb water to optimize the ratio of oily liquid and ~ qr phases to solid and inverted hexagonal phases.
Preferred anionic surfactants are sodium Cg-Cl4 alkyl benzene sulphonates, sodium C11-C20 olefin sulphonates, sodium C11-C20 alkane sulphonates and sodium long chain C10-Cl4 alkyl sulphates or mixtures thereof, sodium 10 alkyl benzene sulphonates being particularly preferred as the main surfactant c In addition, other types of surfactants, such as nonionic surfactants such as the ethoxylated fatty 15 alcohol n~n;t~nit~, fatty acid alkanolamides and amine oxides, may be inC~/L~JLclted as desired. However, they should not be present in amounts ~Y~ee~l; n~ 2 0 % by weight, preferably 10 % by weight, because they could easily adversely affect the foaming properties and the 20 rate of wear of the blocks.
The f iller used in the lavatory rim blocks of the present invention can be an electrolyte, such as sodium sulphate, sodium carbonate and a rh~rh~rous containing 25 sodium salt, e.g. sodium tr;rh~srhAte, h~ i~rh~spate, pyrophosphate, and orthorh~srhi~te~ The filer may also be an inert material such as calcite, clay or urea.
It was found that a high electrolyte content tends to 30 i~u~yLess the solubility of the block to such an extent that there is insufficient active present in the bowl after flushing to generate a stable foam. Hence, if an electrolyte is used as the filler, it is desirable to have a high ratio of surfactant to filler levels in the 35 block, i.e. a high proportion of surfactant and a low proportion of electrolyte. It was found that the anionic 2~44490 C 7243 (R) surfactant/electrolyte filler weight ratio should be greater than about 2 in order to avoid excessive swelling in use and to provide adequate foam generation and stability. If an inert filler is used, the ratio of 5 sur~actant to filler proved to be not critical.
The blocks according to the invention can be made by mixing the ingredients to form a dough of suitable consistency which can then be extruded and cut into 10 lengths to form blocks having the desired properties.
The extrusion process can be suitably carried out using simple conventional extrusion equipment such as normally used for manufacturing soap bars.
The lavatory rim blocks formed in accordance with the invention may also comprise non-surfactant nonionic polymeric materials such as polyethylene glycols, and minor ingredients such as dyes, germicides, fungicides 20 and opacifiers, whereby the compatibility of such ingredients with the water-soluble bll~rhin~ agent must be observed.
The invention will now be illustrated by means of the 25 following non-limiting examples.
~AMPr ~C 1-3 Lavatory rim blocks were prepared from the ingredients 30 listed in the following Table, wherein the amounts are given as % by weight. me ingredients were mixed to form a dough which was subse~u~lll ly extruded in a conventional soap-extrusion dyyclLcll_US and finally cut into lengths of approximately 8 cm. me obtained blocks 35 had a weight of about 50 g.
~ 2~44490 6 C 7243 (R) Example 1 i~ 3 NansaR HS 30 1) 60 60 60 Calcite 13 . 5 11 8 . 5 5Sodium sulphate 13 . 5 11 8 . 5 Verdeo IFF 898 2) __ -- 8 C12 fatty alcohol 8 8 --10 1) Nansa HS 85 is sodium Cg-Cl3 alkyl benzene sulphonate having a mean molecular weight 235, ex Marchon Company (contains 10-15 % NaS04 as impurity).
2) Verdeo IFF 898 is a perfume obtainable from IFF.
15 The stability of the hl ~h i n J agent in the rim blocks was tested by placing them in a conventional rim block cage inside a lavatory bowl and flushing the toilet according to a standard pattern, whereaf ter the con~,el.~L~tion of bleaching agent in the flush water was 20 r~trl-m;nr~cl as well as the ~ tion of L~ ;n;n~
bleaching agent in the block. It was found that the bl~ h;n~ agent r~ ;n-~cl stable inside the blocks for some weeks, and that they continued to deliver KDCCA to the f lush water for at least three weeks .
5 The present invention is concerned with lavatory cleansing blocks and a process for making them. More in particular, it relates to ~l~An~in~ blocks which are intended for use as a cleansing, sanitizing and deodorizing block contained in a device which is hung 10 below the rim of toilet bowls. The block is thereby activated by the flush water and effects its cleaning and sanitizing action each time the bowl is f lushed with flush water from the cistern. These so-called lavatory rim blocks are not in ~o~ contact with water, as 15 distinct from the so-called in-cistern type of cleansing blocks which are constantly immersed in the f lush water cistern of lavatory bowls. It will be evident that such blocks will have - le~ly different requirements as to structure, rate of wear, cracking, mushing and swelling 20 properties, foam properties and perfume generation.
~uch lAvatory rim block~ are known in the ~ rt . For inst~nce, the Euro~e~n pntent ~r~l;c~ir~n 167,210, p..~~ h~fl ~TAnuJ~ry 8, 1986, aisclosel~ ~n extruded 25 l~v~tory rim block which i~ free from ~Ar~-dichloro benzen~, comprising 40 to 90% by weight of ~n ~nionic ~urf~ctant, 5 to 55 % by weight of ~n inert or electrolyte ~iller, ~nd 5 to 15 % by weight of an oily liquid ~erfume, the weight ratio betwQen t~e 30 ~nionic ~urfnct~nt and the filler, if electrolytic, being gre~t~r th~n 2.
Whereas such blocks have good cleansing properties, they have a very limited sanitizing effect on the micro-35 organisms which are always present in the toilet bowl.
Y
-r ~ 2044~90 2 C 7243 (R) EP-A-341836 (JEYES) discloses an extruded lavatory cleansing block with a good sanitising and cleansing effect, which block comprises an anionic surfactant and a chlorinated cuanuric acid derivative. However, this 5 block also comprises a third essential component being a source of specified metal ions, such as barium chloride, cadmium sulphate and calcium chloride, which component may be environmentally less acceptable. Furthermore, this block is especially designed to be used in the lo cistern of a lavatory.
It is an object of the present invention to provide a lavatory rim block which p..cc,,cl ~ a good cleansing, sanitizing and perfume generating activity.
15 MJ1~:UV~L, the blocks must be stable for a prolonged period under the humid conditions of a toilet bowl.
It has now been found that these and other objects may be achieved by means of the lavatory rim blocks 20 according to the invention, which comprise: 30 to 80 %
by weight of an anionic surfactant; 0 to 50 % by weight of an inert or electrolyte filler; 5 to 50 % by weight of a water-soluble hl~hing agent; 5 to 15 % by weight of a hydrophobic structurant. The weight ratio between 25 the anionic surfactant and the filler, if electrolytic, is thereby preferably greater than 2.
Surprisingly, the stability of the water-soluble hl~ .hin~ agent inside the lavatory block proved to be 30 very good, while at the same time the delivery of bleaching agent to the f lush water was more than satisfactory and constant over a prolonged period.
2 0 4 4 4 ~ 0 c 7243 ~R) The water-soluble bleaching agent used in accordance with the invention is an act:ive chlorine bleaching agent such as an alkali metal salts of dichloro cyanuric acid. The preferred water-soluble bleaching agent is potassium 5 dichlorocyanurate. The hlf~ h;ng agent is preferably present in an amount of 10 to 25 % by weight.
The blocks comprise 5-15 % by weight of a hydrophobic structurant. This is preferably a liquid oily perfume, 10 of the kind described in the European patent application 167,210, published January 8, 1986. It will be understood that the liquid oily perfume must be stable in the presence of the water-soluble bleaching agent. Suitable oily perfumes can be easily selected by testing them in 15 combination with the water-soluble bleaching agent.
Examples of suitable bleach-stable perfumes are *Verdeo 898, ~Bonanza 048 and ~Ponderosa 431 all ex IFF, and LB 132 ex Quest .
20 EIowever, the perfume may be partially or totally replaced by another hydrophobic structurant, for example fatty acids or fatty alcohols, typically having 12 to 16 carbon atoms.
The anionic surfactants which may be used in the present 25 invention include for example alkali metal salts of alkyl substituted benzene sulphonates, alkali metal long chain alkyl sulphates, alkali metal ether sulphates derived from long chain alcohols and alkyl phenols, alkali metal alkane sulphonates, alkali metal olefin sulphonates and alkali 30 metal sulphosuccinates, whereby the sodium salts are generally preferred. - Most favoured are sodium alkyl benzene sulphonates. ~
Desirably, the anionic surfactant used in the block - -~ denotes trade mark X
2~4~4~0 - 4 C 7243 (R) should have a relatively low perfume solubility and should only ab60rb water to optimize the ratio of oily liquid and ~ qr phases to solid and inverted hexagonal phases.
Preferred anionic surfactants are sodium Cg-Cl4 alkyl benzene sulphonates, sodium C11-C20 olefin sulphonates, sodium C11-C20 alkane sulphonates and sodium long chain C10-Cl4 alkyl sulphates or mixtures thereof, sodium 10 alkyl benzene sulphonates being particularly preferred as the main surfactant c In addition, other types of surfactants, such as nonionic surfactants such as the ethoxylated fatty 15 alcohol n~n;t~nit~, fatty acid alkanolamides and amine oxides, may be inC~/L~JLclted as desired. However, they should not be present in amounts ~Y~ee~l; n~ 2 0 % by weight, preferably 10 % by weight, because they could easily adversely affect the foaming properties and the 20 rate of wear of the blocks.
The f iller used in the lavatory rim blocks of the present invention can be an electrolyte, such as sodium sulphate, sodium carbonate and a rh~rh~rous containing 25 sodium salt, e.g. sodium tr;rh~srhAte, h~ i~rh~spate, pyrophosphate, and orthorh~srhi~te~ The filer may also be an inert material such as calcite, clay or urea.
It was found that a high electrolyte content tends to 30 i~u~yLess the solubility of the block to such an extent that there is insufficient active present in the bowl after flushing to generate a stable foam. Hence, if an electrolyte is used as the filler, it is desirable to have a high ratio of surfactant to filler levels in the 35 block, i.e. a high proportion of surfactant and a low proportion of electrolyte. It was found that the anionic 2~44490 C 7243 (R) surfactant/electrolyte filler weight ratio should be greater than about 2 in order to avoid excessive swelling in use and to provide adequate foam generation and stability. If an inert filler is used, the ratio of 5 sur~actant to filler proved to be not critical.
The blocks according to the invention can be made by mixing the ingredients to form a dough of suitable consistency which can then be extruded and cut into 10 lengths to form blocks having the desired properties.
The extrusion process can be suitably carried out using simple conventional extrusion equipment such as normally used for manufacturing soap bars.
The lavatory rim blocks formed in accordance with the invention may also comprise non-surfactant nonionic polymeric materials such as polyethylene glycols, and minor ingredients such as dyes, germicides, fungicides 20 and opacifiers, whereby the compatibility of such ingredients with the water-soluble bll~rhin~ agent must be observed.
The invention will now be illustrated by means of the 25 following non-limiting examples.
~AMPr ~C 1-3 Lavatory rim blocks were prepared from the ingredients 30 listed in the following Table, wherein the amounts are given as % by weight. me ingredients were mixed to form a dough which was subse~u~lll ly extruded in a conventional soap-extrusion dyyclLcll_US and finally cut into lengths of approximately 8 cm. me obtained blocks 35 had a weight of about 50 g.
~ 2~44490 6 C 7243 (R) Example 1 i~ 3 NansaR HS 30 1) 60 60 60 Calcite 13 . 5 11 8 . 5 5Sodium sulphate 13 . 5 11 8 . 5 Verdeo IFF 898 2) __ -- 8 C12 fatty alcohol 8 8 --10 1) Nansa HS 85 is sodium Cg-Cl3 alkyl benzene sulphonate having a mean molecular weight 235, ex Marchon Company (contains 10-15 % NaS04 as impurity).
2) Verdeo IFF 898 is a perfume obtainable from IFF.
15 The stability of the hl ~h i n J agent in the rim blocks was tested by placing them in a conventional rim block cage inside a lavatory bowl and flushing the toilet according to a standard pattern, whereaf ter the con~,el.~L~tion of bleaching agent in the flush water was 20 r~trl-m;nr~cl as well as the ~ tion of L~ ;n;n~
bleaching agent in the block. It was found that the bl~ h;n~ agent r~ ;n-~cl stable inside the blocks for some weeks, and that they continued to deliver KDCCA to the f lush water for at least three weeks .
Claims (11)
1. A lavatory rim cleansing block comprising:
30 to 80 % by weight of an anionic surfactant;
0 to 50 % by weight of an inert or electrolyte filler;
5 to 50 % by weight of a water-soluble, active chlorine bleaching agent; and 5 to 15 % by weight of a hydrophobic, liquid, oily perfume structurant .
30 to 80 % by weight of an anionic surfactant;
0 to 50 % by weight of an inert or electrolyte filler;
5 to 50 % by weight of a water-soluble, active chlorine bleaching agent; and 5 to 15 % by weight of a hydrophobic, liquid, oily perfume structurant .
2. A lavatory cleansing block according to Claim 1, wherein the hydrophobic structurant is a liquid oily perfume .
3. A lavatory cleansing block according to Claim 1 wherein the weight ratio between the anionic surfactant and the filler, if electrolytic, is greater than 2.
4. A lavatory cleansing block according to Claim 1 comprising 10 to 25 % by weight of the water-soluble bleaching agent.
5. A lavatory cleansing block according to Claim 1 wherein the water-soluble bleaching agent is an alkali metal salt of dichloro cyanuric acid, preferably potassium dichloro cyanurate.
6. A lavatory cleansing block according to Claim 1 comprising 50 to 80 % by weight of an anionic surfactant.
7. A lavatory cleansing block according to Claim 1 wherein the anionic surfactant comprises C9-C14 alkylbenzene sulphonate.
8. A lavatory cleansing block according to Claim 1 further comprising a nonionic surfactant in an amount of less than 10 % by weight.
9. A lavatory cleansing block according to Claim 1 comprising 10 to 45 % by weight of an inert or electrolyte filler.
10. A lavatory cleansing block according to Claim 1 comprising 7 to 12 % by weight of the oily liquid perfume.
11. Process for preparing a lavatory block according to any one of Claims 1 to 10, whereby the ingredients are mixed to form a dough, which is then extruded and cut into blocks of suitable lengths.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909013539A GB9013539D0 (en) | 1990-06-18 | 1990-06-18 | Lavatory cleansing block |
| GB9013539.3 | 1990-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2044490A1 CA2044490A1 (en) | 1991-12-19 |
| CA2044490C true CA2044490C (en) | 1996-12-17 |
Family
ID=10677791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002044490A Expired - Fee Related CA2044490C (en) | 1990-06-18 | 1991-06-13 | Lavatory cleansing block |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0462643B1 (en) |
| JP (1) | JPH0765080B2 (en) |
| AU (1) | AU628749B2 (en) |
| BR (1) | BR9102494A (en) |
| CA (1) | CA2044490C (en) |
| DE (1) | DE69104780T2 (en) |
| ES (1) | ES2063436T3 (en) |
| GB (1) | GB9013539D0 (en) |
| ZA (1) | ZA914661B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9108574D0 (en) * | 1991-04-22 | 1991-06-05 | Jeyes Ltd | Lavatory cleansing blocks |
| GB9225338D0 (en) * | 1992-12-03 | 1993-01-27 | Jeyes Group Plc | Lavatory cleansing blocks |
| US5817611A (en) * | 1992-12-03 | 1998-10-06 | Jeyes Group, Plc | Lavatory cleansing blocks |
| EP0619367A1 (en) * | 1993-04-06 | 1994-10-12 | The Procter & Gamble Company | Lavatory blocks containing enzymes |
| US5578559A (en) * | 1993-05-14 | 1996-11-26 | Block Drug Company, Inc. | Lavatory cleaning block |
| GB2300423A (en) * | 1995-03-27 | 1996-11-06 | Jeyes Group Plc | Lavatory cleansing |
| US5990061A (en) * | 1996-05-17 | 1999-11-23 | S. C. Johnson & Son, Inc. | Toilet cleansing block |
| US5945390A (en) * | 1996-05-17 | 1999-08-31 | S. C. Johnson & Son, Inc. | Toilet cleansing block |
| JP3310985B2 (en) * | 1996-06-12 | 2002-08-05 | ユニリーバー・ナームローゼ・ベンノートシヤープ | Improvements on toilet cleaning blocks |
| US6184192B1 (en) * | 1997-04-24 | 2001-02-06 | S. C. Johnson & Son, Inc. | Chlorinated in-tank toilet cleansing block |
| DE19721471A1 (en) * | 1997-05-22 | 1998-11-26 | Buck Chemie Gmbh | Active chlorine splitting toilet cleaning block |
| EP1053294A1 (en) * | 1998-02-04 | 2000-11-22 | Unilever Plc | Lavatory cleansing composition |
| US20030156976A1 (en) * | 2002-02-11 | 2003-08-21 | Jeyes Group Limited | Cleansing blocks |
| DE102004056554A1 (en) | 2004-11-23 | 2006-05-24 | Buck-Chemie Gmbh | Adhesive sanitary cleaning and scenting agent |
| US20080032912A1 (en) | 2006-08-04 | 2008-02-07 | Takasago International Corporation | Use of fragrance compositions for the prevention of the development of indole base malodours from fecal and urine based soils |
| US7709433B2 (en) | 2007-02-12 | 2010-05-04 | S.C. Johnson & Son, Inc. | Self-sticking disintegrating block for toilet or urinal |
| EP2110118B1 (en) | 2008-04-15 | 2014-11-19 | Takasago International Corporation | Malodour reducing composition and uses thereof |
| DE102010043848A1 (en) * | 2010-11-12 | 2012-05-16 | Henkel Ag & Co. Kgaa | Anionic surfactant spherical toilet stones |
| JP7048317B2 (en) | 2015-02-24 | 2022-04-05 | 高砂香料工業株式会社 | Enhanced fragrance composition |
| ES2961747T3 (en) | 2016-02-24 | 2024-03-13 | Takasago Perfumery Co Ltd | laundry product |
| US11851631B2 (en) | 2016-02-24 | 2023-12-26 | Takasago International Corporation | Household product delivering cooling sensations |
| JP2019507614A (en) | 2016-02-24 | 2019-03-22 | 高砂香料工業株式会社 | Household goods to deliver a sense of warmth and / or irritability |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269723A (en) * | 1978-03-21 | 1981-05-26 | Jeyes Group Limited | Process for making a lavatory cleansing block and use |
| DE2907029A1 (en) * | 1979-02-23 | 1980-09-04 | Henkel Kgaa | METHOD FOR PRODUCING RINSING BLOCKS FOR TOILET HYGIENE |
| DE3225292A1 (en) * | 1982-07-07 | 1984-01-12 | Henkel KGaA, 4000 Düsseldorf | CLEANING AND DISINFECTANT TABLET FOR THE WATER CASE OF RINSING TOILETS |
| GB8417345D0 (en) * | 1984-07-06 | 1984-08-08 | Unilever Plc | Para-dichlorobenzene-free lavatory cleansing blocks |
| GB2178442B (en) * | 1985-06-14 | 1988-12-21 | Jeyes Group Ltd | Lavatory cleansing compositions |
| AU627170B2 (en) * | 1988-04-13 | 1992-08-20 | Jeyes Limited | Lavatory cleansing blocks |
-
1990
- 1990-06-18 GB GB909013539A patent/GB9013539D0/en active Pending
-
1991
- 1991-06-07 EP EP91201409A patent/EP0462643B1/en not_active Revoked
- 1991-06-07 ES ES91201409T patent/ES2063436T3/en not_active Expired - Lifetime
- 1991-06-07 DE DE69104780T patent/DE69104780T2/en not_active Revoked
- 1991-06-13 CA CA002044490A patent/CA2044490C/en not_active Expired - Fee Related
- 1991-06-14 AU AU78386/91A patent/AU628749B2/en not_active Ceased
- 1991-06-17 BR BR919102494A patent/BR9102494A/en unknown
- 1991-06-18 JP JP3146139A patent/JPH0765080B2/en not_active Expired - Fee Related
- 1991-06-18 ZA ZA914661A patent/ZA914661B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE69104780T2 (en) | 1995-03-02 |
| AU628749B2 (en) | 1992-09-17 |
| JPH0765080B2 (en) | 1995-07-12 |
| EP0462643B1 (en) | 1994-10-26 |
| ZA914661B (en) | 1993-02-24 |
| BR9102494A (en) | 1992-01-21 |
| EP0462643A1 (en) | 1991-12-27 |
| JPH04252300A (en) | 1992-09-08 |
| AU7838691A (en) | 1991-12-19 |
| CA2044490A1 (en) | 1991-12-19 |
| GB9013539D0 (en) | 1990-08-08 |
| DE69104780D1 (en) | 1994-12-01 |
| ES2063436T3 (en) | 1995-01-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |