JP2021105305A - Gel-like composition for suppressing urine splash - Google Patents

Abstract

To provide a urine splash suppression method capable of suppressing urine splash that occurs on a bowl surface of a toilet bowl when urinating.SOLUTION: Urine splash that occurs on a bowl surface of a toilet bowl can be suppressed by placing a gel-like composition including a polyoxyalkylene block polymer, on a portion on the bowl surface of the toilet bowl to which the urine directly hits.SELECTED DRAWING: None

Description

The present invention relates to a gel-like composition for suppressing urine splash, which is used by adhering to the bowl surface of the toilet bowl and can suppress urine splash generated on the bowl surface of the toilet bowl during urination.

When a man urinates in a Western-style toilet in an upright position, urine splashes may occur and urine may be scattered around the periphery of the bowl of the toilet or outside the bowl, which is a hygiene problem. In addition, regardless of gender, when urinating into a Western-style toilet bowl in a sitting position, urine may be scattered on the back side of the toilet seat due to urine splash generated on the bowl surface of the toilet bowl, which is also a hygiene problem. ..

Conventionally, various methods have been proposed as measures against urine splash. For example, Patent Document 1 reports that by placing a board on the upper peripheral edge of a bowl of a toilet bowl and forming a wall in the bowl of the toilet bowl, it is possible to prevent urine from scattering outside the toilet bowl due to urine splash. In addition, a method of absorbing scattered urine by arranging a sheet such as a non-woven fabric around the upper periphery of the bowl of the toilet bowl has also been proposed. However, these methods do not suppress the urine splash itself, but are a countermeasure against the urine scattered by the urine splash, so it is necessary to discard or wash the member to which the urine adheres or is absorbed after use, and it is still hygienic. I have the above problem.

Further, Patent Documents 2 and 3 report that by covering the puddle in the bowl of the toilet bowl with foam, urine splashing caused by the puddle in the bowl of the toilet bowl can be suppressed. However, the methods of Patent Documents 2 and 3 cannot suppress the urine splash that occurs when urine hits the bowl surface of the toilet bowl, and therefore cannot be a countermeasure against urine splash when urinating into the Western style toilet bowl in a sitting posture.

Japanese Unexamined Patent Publication No. 2019-190256 International Publication No. 2019/138450 Japanese Unexamined Patent Publication No. 2015-52257

An object of the present invention is to provide a technique capable of suppressing urine splashes generated on the bowl surface of a toilet bowl during urination.

As a result of diligent studies to solve the above problems, the present inventor placed the gel-like composition containing the polyoxyalkylene block polymer on the bowl surface of the toilet bowl at a site where urine directly hits the bowl of the toilet bowl. It was found that the urine splash that occurs on the surface can be suppressed. The present invention has been completed by further studies based on such findings.

That is, the present invention provides the inventions of the following aspects.
Item 1. A gel-like composition for suppressing urine splash, which contains a polyoxyalkylene block polymer and is used by adhering it to the bowl surface of a toilet bowl.
Item 2. Item 2. The gel-like composition for suppressing urinary splash according to Item 1, further comprising a polyoxyalkylene alkyl ether.
Item 3. Item 2. The gel-like composition for suppressing urine splash according to Item 1 or 2, which is used for suppressing urine splash when urinating in a sitting posture with a Western-style toilet bowl.
Item 4. A method for suppressing urine splash, in which a gel-like composition containing a polyoxyalkylene block polymer is attached to a portion of the bowl surface of a toilet bowl that is directly exposed to urinated urine.

According to the present invention, when urinating in an upright or sitting posture, urine splash generated on the bowl surface of the toilet bowl can be suppressed, so that the toilet bowl and its surroundings can be maintained in a hygienic state.

It is a figure which showed the part of the bowl surface of the toilet bowl (the region A in the sitting posture, the region A and / or B in the case of an upright posture) to which the gel-like composition for suppressing urine splash of this invention is attached. It is a schematic diagram of the test outline at the time of evaluating the urine splash suppression effect in Test Example 1.

1. 1. Gel-like composition for suppressing urine splash The gel-like composition for suppressing urine splash of the present invention contains a polyoxyalkylene block polymer and is used by being adhered to the bowl surface of a toilet bowl. By arranging the gel-like composition for suppressing urine splash having such a composition on the bowl surface of the toilet bowl where the urine hits, the impact (repulsive force of rebound) when the urinated urine hits the gel-like composition. Can be absorbed and urine splash can be effectively suppressed. Hereinafter, the gel-like composition for suppressing urine splash of the present invention will be described in detail.

[Polyoxyalkylene block polymer]
The gel-like composition for suppressing urine splash of the present invention contains a polyoxyalkylene block polymer. The polyoxyalkylene block polymer can exert a cleaning action by a surface active action as well as a role as a gelling agent for forming a gel-like substance. Further, by containing the polyoxyalkylene block polymer, the gel strength described later can be suitably provided.

The polyoxyalkylene block polymer may be a block polymer containing two or more kinds of polyoxyalkylenes among polyoxyalkylenes such as polyoxyethylene, polyoxypropylene, and polyoxybutylene, but urine splash is even more effective. From the viewpoint of suppressing urine, a polyoxyalkylene block polymer represented by the following general formula (1) is preferably used.

In the general formula (1), j, k, l, m, and n each indicate the number of added moles. j + n is 1 or more, k is 0 or more, l is 1 or more, and m is 0 or more. A ₁ O represents an alkylene oxide having 2 to 4 carbon atoms. A _{2 O has 2 to} 4 carbon atoms and represents an alkylene oxide having a different carbon number from that of A _{1 O.} A ₃ O has 2 to 4 carbon atoms and represents an alkylene oxide having a different carbon number from _{that of A 2 O.} At _{least one of A 1} O, A ₂ O and A ₃ O is ethylene oxide.

In the general formula (1), A ₁ O represents an alkylene oxide having 2 to 4 carbon atoms, that is, ethylene oxide, propylene oxide or butylene oxide. From the viewpoint of suppressing urinary splash more effectively, ethylene oxide is preferably mentioned as _{A 1 O.}

Further, in the general formula (1), j + n _{represents the total number of moles of alkylene oxide (A 1} O) added, j + n may be 1 or more, and either j or n may be 0. From the viewpoint of more effectively suppressing urinary splash, j and n are preferably 1 or more, respectively. Further, it is preferable that j and n are substantially the same number. The upper limit of j + n is not particularly limited, and examples thereof include 400. Further, from the viewpoint of more effectively suppressing urine splash, j + n is preferably 30 or more, more preferably 30 to 350, and particularly preferably 70 to 350. More specifically, j is preferably 15 or more, more preferably 15 to 175, particularly preferably 35 to 175, and n is preferably 15 or more, further preferably 15 to 175, particularly preferably 35 to 175. 175 is mentioned.

In the general formula (1), A ₂ O represents an alkylene oxide having 2 to 4 carbon atoms, that is, ethylene oxide, propylene oxide or butylene oxide. However, A ₂ O is an alkylene oxide having a different carbon number from _{A 1 O.} That is, when A ₁ O is ethylene oxide, A ₂ O becomes propylene oxide or butylene oxide, and when A ₁ O is propylene oxide, A ₂ O becomes ethylene oxide or butylene oxide, and A ₁ When O is butylene oxide, A ₂ O becomes ethylene oxide or propylene oxide. From the viewpoint of more effectively suppressing urinary splashes, A ₂ O is preferably propylene oxide or butylene oxide, and more preferably butylene oxide.

Further, in the general formula (1), k and m _{indicate the number of moles of alkylene oxide (A 2} O) added, and are 0 or more, respectively. When k is 0, m is also preferably 0, but from the viewpoint of more effectively suppressing urine splash, k and m are more preferably 1 or more. Further, it is preferable that k and m are substantially the same number. The upper limit values of k and m are not particularly limited, and examples thereof include 30 as the upper limit value of k and 30 as the upper limit value of m. The upper limit of k + m is not particularly limited, but 60 is mentioned, for example. Further, from the viewpoint of suppressing urine splash more effectively, k + m is preferably 0 to 60, more preferably 0 to 40, and particularly preferably 10 to 40. More specifically, k is 0 to 30, preferably 0 to 20, more preferably 5 to 20; m is 0 to 30, preferably 0 to 20, and even more preferably 5 to 20.

In the general formula (1), A ₃ O represents an alkylene oxide having 2 to 4 carbon atoms, that is, ethylene oxide, propylene oxide or butylene oxide. However, A ₃ O is an alkylene oxide having a different carbon number from _{A 2 O.} That is, when k and m are 0 (when there is no _{A 2 O), A 3} O becomes ethylene oxide, propylene oxide or butylene oxide. When k and / or m is 1 or more, if A ₂ O is ethylene oxide, A ₃ O becomes propylene oxide or butylene oxide, and if A ₂ O is propylene oxide, A ₃ O is ethylene oxide. It becomes an oxide or butylene oxide, and if A ₂ O is a butylene oxide, A ₃ O becomes an ethylene oxide or a propylene oxide. From the viewpoint of further be suppressed even more effectively the urine splashes as A ₃ O, preferably propylene oxide or butylene oxide, more preferably include propylene oxide.

In the general formula (1), l represents an addition molar number of alkylene oxide (A ₃ O), it is 1 or more. The upper limit of l is not particularly limited, and examples thereof include 60. From the viewpoint of suppressing urinary splash more effectively, l is 1 to 60, preferably 15 to 60. More specifically, when k and m are 0, l is more preferably 1 to 60, particularly preferably 15 to 60, and most preferably 30 to 60. When k and m are 1 or more, l is more preferably 1 to 60, particularly preferably 15 to 60, and most preferably 15 to 30.

In the general formula (1), _{at least one of A 1} O, A ₂ O and A ₃ O becomes ethylene oxide. From the viewpoint of more effectively suppressing urinary splash, at least A ₁ O is preferably ethylene oxide. When A ₁ O is ethylene oxide, the block polymer of the general formula (1) has a structure represented by the following general formula (1a).

In the general formula (1a), j, k, l, m, and n are the same as described above. EO indicates ethylene oxide. A ₂ O represents an alkylene oxide having 3 or 4 carbon atoms. A ₃ O has 2 to 4 carbon atoms and represents an alkylene oxide having a different carbon number from _{that of A 2 O.}

Further, in the block polymer of the general formula (1), the molecular weight of the portion occupied by the alkylene oxide having 3 to 4 carbon atoms may be a range that satisfies the above-mentioned condition of the general formula (1), but urine splash is used. From the viewpoint of suppressing more effectively, 1400 or more, more preferably 1700 or more, and particularly preferably 1700 to 3500 can be mentioned.

The molecular weight of the block polymer of the general formula (1) may be a range that satisfies the above-mentioned condition of the general formula (1), but is preferable from the viewpoint of more effectively suppressing urinary splashes. 4600 or more, more preferably 6500 or more, particularly preferably 6500 to 20000.

Among the block polymers of the general formula (1), the following general formulas (1a-1) to (1a-3) are represented as suitable specific examples from the viewpoint of more effectively suppressing urinary splashes. Examples include polyoxyalkylene block polymers.

In the general formula (1a-1), EO represents ethylene oxide, BO represents butylene oxide, and PO represents propylene oxide. Further, in the general formula (1a-1), j1, k1, l1, m1 and n1 indicate the number of added moles, respectively. j1 and n1 represent 1 or more, preferably 15 or more, more preferably 15 to 175, and particularly preferably 35 to 175, respectively. It is preferable that j1 and n1 are substantially the same number. The j1 + n1 (number of moles of ethylene oxide added) is preferably 30 or more, more preferably 30 to 350, and particularly preferably 70 to 350. Each of k1 and m1 represents 0 or more, preferably 0 to 30, more preferably 0 to 20, and particularly preferably 5 to 20. It is preferable that k1 and m1 are substantially the same number. Further, k1 + m1 (the number of moles of butylene oxide added) is 0 or more, preferably 0 to 60, more preferably 0 to 40, and particularly preferably 10 to 40. l1 represents 1 or more, preferably 1 to 60, more preferably 15 to 60, and particularly preferably 15 to 30.

In the general formula (1a-2), EO represents ethylene oxide and PO represents propylene oxide. Further, in the general formula (1a-2), j2, l2, and n2 each indicate the number of added moles. j2 and n2 represent 1 or more, preferably 15 to 150, and more preferably 35 to 150, respectively. It is preferable that j2 and n2 are substantially the same number. Further, j2 + n2 (the number of moles of ethylene oxide added) is 2 or more, preferably 30 to 300, and more preferably 70 to 300. l2 represents 1 or more, preferably 1 to 60, more preferably 15 to 60, and particularly preferably 30 to 60.

In the general formula (1a-3), EO represents ethylene oxide and BO represents butylene oxide. Further, in the general formula (1a-3), j3, l3, and n3 each indicate the number of added moles. j3 and n3 represent 1 or more, preferably 15 to 150, and more preferably 35 to 150, respectively. It is preferable that j3 and n3 are substantially the same number. The j3 + n3 (number of moles of ethylene oxide added) is 2 or more, preferably 30 to 300, and more preferably 70 to 300. l3 represents 1 or more, preferably 1 to 50, and more preferably 20 to 50.

In the gel-like composition for suppressing urine splash of the present invention, one type of structure may be used alone as the polyoxyalkylene block polymer represented by the general formula (1), or two or more types of structures may be used alone. May be used in combination.

In the gel-like composition for suppressing urine splash of the present invention, the content of the polyoxyalkylene block polymer is, for example, 10 to 50% by weight, preferably 17 to 40% by weight, and more preferably 18 to 30% by weight. Be done. When the content of the polyoxyalkylene block polymer satisfies the above range, it becomes possible to form a gel-like composition capable of suppressing urinary splash more effectively, and further, it is possible to preferably provide the gel strength described later. ..

[Polyoxyalkylene alkyl ether]
The gel-like composition for suppressing urine splash of the present invention may contain a polyoxyalkylene alkyl ether together with the polyoxyalkylene block polymer.

The type of the oxyalkylene group in the polyoxyalkylene alkyl ether is not particularly limited, and examples thereof include alkylene oxides having 2 to 4 carbon atoms, that is, ethylene oxide, propylene oxide, and butylene oxide. Among these oxyalkylene groups, ethylene oxide and propylene oxide are preferable, and ethylene oxide is more preferable. Further, in the polyoxyalkylene alkyl ether, an oxyalkylene group having one kind of structure may be contained alone, or an oxyalkylene group having two or more kinds of structures may be contained in combination.

The number of moles of the oxyalkylene group added in the polyoxyalkylene alkyl ether is not particularly limited, and examples thereof include 10 to 100, preferably 25 to 75, and more preferably 40 to 60.

The carbon number of the alkyl group in the polyoxyalkylene alkyl ether is not particularly limited, and examples thereof include 10 to 22, preferably 14 to 20, and more preferably 16 to 18. Further, the alkyl group in the polyoxyalkylene alkyl ether may be linear or branched, but a linear group is preferable.

Among the polyoxyalkylene alkyl ethers, polyoxyethylene (additional number of moles 10 to 100) alkyl (carbon number 10 to 22) ether is preferable, and more preferably Examples thereof include polyoxyethylene (additional number of moles 40 to 60) alkyl (carbon number 16 to 18) ether.

As the polyoxyalkylene alkyl ether, one having one kind of structure may be used alone, or one having two or more kinds of structures may be used in combination.

When the polyoxyalkylene alkyl ether is contained in the gel-like composition for suppressing urine splash of the present invention, the content thereof is, for example, 1 to 40% by weight, preferably 2 to 35% by weight, more preferably. 3 to 30% by weight, more preferably 3 to 19% by weight, and particularly preferably 3 to 15% by weight.

When the gel-like composition for suppressing urine splash of the present invention contains a polyoxyalkylene alkyl ether, the ratio of the polyoxyalkylene block polymer to the polyoxyalkylene alkyl ether depends on the content of each of the above-mentioned components. However, for example, the total amount of polyoxyalkylene alkyl ether is 1 to 300 parts by weight, preferably 2 to 150 parts by weight, and more preferably 3 to 130 parts by weight per 100 parts by weight of the total amount of the polyoxyalkylene block polymer. The ratio may be parts by weight, more preferably 3 to 100 parts by weight, and particularly preferably 10 to 80 parts by weight.

[Amphoteric surfactant]
The gel-like composition for suppressing urine splash of the present invention may contain an amphoteric surfactant. In particular, when an amphoteric surfactant is contained in addition to the polyoxyalkylene block polymer and the polyoxyalkylene alkyl ether, urine splash can be suppressed more effectively.

The type of amphoteric tenside is not particularly limited, but for example, coconut oil fatty acid amide propyl dimethylaminoacetic acid betaine, lauryl dimethyl amino acetate betaine, lauric acid amide propyl betaine, 2-alkyl-N-carboxymethyl-N-hydroxy Betaine-type amphoteric tenside agents such as ethylimidazolinium betaine and laurylhydroxysulfobetaine; amino acid-type amphoteric tenside agents such as β-laurylaminopropionate and sodium lauryldiaminoethylglycine; decyldimethylamine oxide and lauryldimethylamine oxide Such as amine oxide type amphoteric tenside agent and the like.

Among these amphoteric surfactants, betaine-type amphoteric surfactants are preferable, and coconut oil fatty acid amide propyldimethylaminoacetate betaine is more preferable, from the viewpoint of more effectively suppressing urinary splashes.

These amphoteric surfactants may be used alone or in combination of two or more.

When an amphoteric surfactant is contained in the gel-like composition for suppressing urine splash of the present invention, the content thereof is, for example, 1 to 10% by weight, preferably 1 to 6% by weight, and more preferably 2 to 5% by weight. Weight% is mentioned.

When the gel-like composition for suppressing urinary splashes of the present invention contains an amphoteric surfactant, the ratio of the polyoxyalkylene block polymer to the amphoteric surfactant depends on the content of each of the above-mentioned components. It may be in the range, but for example, the total amount of the amphoteric tenside is 1 to 100 parts by weight, preferably 5 to 80 parts by weight, and more preferably 10 to 70 parts by weight per 100 parts by weight of the total amount of the polyoxyalkylene block polymer. The ratio is as follows.

[water]
The gel-like composition for suppressing urine splash of the present invention preferably contains water in order to form a gel.

In the gel-like composition for suppressing urine splash of the present invention, the water content may be appropriately set within a range in which the gel-like material can be formed, and is, for example, 20 to 80% by weight, preferably 30 to 70% by weight. , More preferably 40 to 60% by weight.

[Fragrance]
The gel-like composition for suppressing urine splash of the present invention may contain a fragrance, if necessary. The type of fragrance contained in the gel-like composition for suppressing urine splash of the present invention is not particularly limited, and for example, in addition to natural fragrances, hydrocarbon fragrances, ether fragrances, ester fragrances, alcohol fragrances, etc. Examples thereof include synthetic fragrances such as aldehyde-based fragrances and ketone-based fragrances.

When the fragrance is contained in the gel-like composition for suppressing urine splash of the present invention, the content thereof is not particularly limited, but is, for example, more than 0 to 15% by weight, preferably 1 to 12% by weight, more preferably. 3 to 10% by weight is mentioned.

[Other additives]
In addition to the above-mentioned components, the gel-like composition for suppressing urinary splash of the present invention contains a nonionic surfactant (polyoxyalkylene block polymer and (Other than polyoxyalkylene alkyl ether), anionic surfactant, cationic surfactant (other than tetraalkylammonium salt), enzyme, bactericide, chelating agent, colorant, pigment, deodorant, emulsifier, solubilization An appropriate amount of additives such as an agent, a bulking agent, a solubility adjusting agent, a bleaching agent, a water repellent, a hydrophilic agent, a filler, a pH adjusting agent, a thickener, a buffering agent, and a defoaming agent can be contained.

[Method for producing gel-like composition for suppressing urine splash]
The gel-like composition for suppressing urine splash of the present invention is produced by mixing a predetermined amount of the components to be contained at room temperature.

[Gel strength]
The gel strength of the gel-like composition for suppressing urinary splashes of the present invention is not particularly limited, but using a rheometer, a sample table speed of 60 mm / min, a disk-shaped pressure-sensitive shaft having a diameter of 10 mm, and a measurement temperature of 25 ° C. The gel strength measured under the above conditions ^{is preferably 240 gf / mm 2} or less. Having such gel strength makes it possible to suppress urine splash more effectively. From the viewpoint of more effectively suppressing urinary splashes, the gel strength at 25 ° C. is preferably 210 gf / mm ² or less, more preferably 50 to 210 gf / mm ² , and further preferably 80 to 210 gf / mm ² . Particularly preferably, 80 to 120 gf / mm ² is mentioned.

In the present invention, the "gel strength" refers to the load (gf) per ^{1 mm 2 of the} pressure-sensitive shaft that is loaded when the gel-like composition is broken when operated under the above conditions using a rheometer. ..

Since the gel strength of the gel-like composition varies depending on the type and content of the components to be blended, the combination of the components to be blended, and the like, the gel-like composition for suppressing urine splash used in the present invention is provided with the gel strength. The type and content of the polyoxyalkylene block polymer, the polyoxyalkylene block polymer, and other components to be blended as necessary may be appropriately adjusted. Further, if a person skilled in the art has determined the gel strength to be achieved, it is possible to obtain the desired gel strength by adjusting the type and content of the components to be blended, the combination of the components to be blended, and the like. be.

[Use, usage, etc.]
The gel-like composition for suppressing urine splash of the present invention is attached to the bowl surface of the toilet bowl and is used to suppress urine splash generated during urination.

In the gel-like composition for suppressing urinary splash of the present invention, the applicable toilet bowl may be either a Western-style toilet bowl or a men's urinal, but a Western-style toilet bowl is preferable. Further, when the gel-like composition for suppressing urine splash of the present invention is used for a Western-style toilet bowl, it may be used for suppressing urine splash when urinating in either a sitting or upright posture, but urine generated in the sitting posture. It can be suitably used for splash suppression applications.

Further, the portion of the bowl surface of the toilet bowl to which the gel-like composition for suppressing urine splash of the present invention is attached may be a portion directly exposed to the urinated urine, and may be appropriately set depending on the type of the toilet bowl. For example, when it is used for suppressing urine splash when urinating in a sitting posture with a Western-style toilet bowl, the urine splash of the present invention is located near the center of the bowl surface of the Western-style toilet bowl (for example, the region A in FIG. 1). A gel-like composition for inhibition may be attached. In addition, when it is used for the purpose of suppressing urine splash when urinating in an upright posture with a Western-style toilet bowl, the area A in FIG. 1 and / or near the center of the back of the bowl of the Western-style toilet bowl (for example, FIG. 1). The gel-like composition for suppressing urinary splash of the present invention may be attached to the region B of the above. When used for suppressing urine splash in a men's urinal, the gel-like composition for suppressing urine splash of the present invention may be attached to the vicinity of the center of the central inner wall surface of the bowl of the men's urinal. ..

The area and the amount to deposit urine wings for suppressing the gel composition of the present invention the bowl surface of the toilet, for example, about ² area 1～16Cm, preferably 4～10Cm ² mm, height 0.5 It may be set to about 6 cm, preferably about 1 to 3 cm.

The three-dimensional shape of the gel-like composition for suppressing urine splash of the present invention is not particularly limited and may be appropriately set according to the type of toilet bowl to which it is applied. For example, it is attached to the bowl surface of the toilet bowl. Examples of the three-dimensional shape include a block shape (lump shape), a sheet shape, a string shape, and a granular shape.

In the gel-like composition for suppressing urine splash of the present invention, the front view shape when attached to the bowl surface of the toilet bowl is not particularly limited, and for example, a circular shape, an elliptical shape, or a polygonal shape (triangular shape, square shape). Etc.), rotationally symmetric shape (floral pattern, star pattern, etc.) and the like. Here, the front view shape means a shape when the gel-like composition for suppressing urine splash is viewed from the front in a state of being attached to the bowl surface of the toilet bowl (when viewed toward the bowl surface).

Further, in the gel-like composition for suppressing urine splash of the present invention, the cross-sectional shape of the gel-like composition when attached to the bowl surface of the toilet bowl is not particularly limited, and for example, a convex cross section having an upward convex portion. Examples include a shape, a rectangular shape, a cubic shape, a semicircular shape, a trapezoidal shape, and a triangular shape. Here, the cross-sectional shape means the shape of the cross section in the direction perpendicular to the bowl surface in a state where the gel-like composition for suppressing urine splash is attached to the bowl surface of the toilet bowl.

The method for adhering the gel-like composition for suppressing urine splash of the present invention to the bowl of the toilet bowl is not particularly limited, but for example, the gel-like composition for suppressing urine splash of the present invention is suppressed from the container containing the gel-like composition for suppressing urine splash. The gel-like composition for use may be discharged onto the bowl surface of the toilet bowl so as to have a desired shape. Since the gel-like composition for suppressing urine splash of the present invention is in the form of a gel and can have adhesiveness to the bowl of the toilet bowl, when it is attached to the bowl of the toilet bowl, the toilet bowl is used as it is without using an adhesive material or the like. It can be attached to the bowl and fixed.

Urine splash is suppressed by urinating the bowl of the toilet bowl to which the gel-like composition for suppressing urine splash of the present invention is attached so that urine directly hits the gel-like composition for suppressing urine splash.

2. Urine splash suppression method Further, the present invention is a method for imparting a urine splash suppression effect to the bowl surface of the toilet bowl, wherein the polyoxyalkylene block polymer is applied to a portion of the bowl surface of the toilet bowl where the urinated urine directly hits. And a method for suppressing urine splash, which comprises attaching a gel-like composition containing a polyoxyalkylene block polymer.

The composition and shape of the gel-like composition used in the method for suppressing urine splash, the type of toilet bowl to be applied, and the like are as described in the column of "1. Gel-like composition for suppressing urine splash". ..

Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

The structures of the main components used in the following examples and comparative examples are as follows.
-Polyoxyalkylene block polymer 1 : Structural formula: HO- (EO) _j2- (PO) _l2- (EO) _n2- H [EO is ethylene oxide, PO is propylene oxide, j2 and n2 are approximately the same number, EO added mol The number (j2 + n2) is about 290, the number of added moles of PO (l2) is about 55, the molecular weight is about 16000, and the molecular weight of the hydrophobic group portion (-(PO) _l2- ) is about 3250].
-Polyoxyalkylene block polymer 2 : Structural formula: HO- (EO) _j1- (BO) _k1- (PO) _l1- (BO) _m1- (EO) _n1- H [EO is ethylene oxide, BO is butylene oxide, PO is propylene oxide, j1 and n1 are about the same number, k1 and m1 are about the same number, the number of EO added moles (j1 + n1) is about 330, the number of added moles of BO (k1 + m1) is about 20, and the number of added moles of PO is about 20. The number (l1) is about 20, the molecular weight is about 16800, and the molecular weight of the hydrophobic group portion ((BO) _k1- (PO) _l1- (BO) _m1 ) is about 2200]
-Polyoxyethylene alkyl ether : A mixture of polyoxyethylene (additional number of moles 50) cetyl ether and polyoxyethylene oleyl ether
-Amphoteric surfactant : coconut oil fatty acid amide propyl dimethyl acetate betaine
-Tetraalkylammonium salt : didecyldimethylammonium metosulfate
Glycerin oxide: A glycerin polyoxyethylene adduct in which three etilenoxides having 20 addition moles are ester-bonded to glycerin.

Test Example 1
A gel-like composition was prepared by mixing a predetermined amount of each component shown in Table 1. The content shown in Table 1 indicates a substantial amount of each component excluding the solvent contained in the added additive (commodity). With respect to the obtained gel-like composition, the gel strength was measured and the urine splash suppressing effect was evaluated by the following methods.

<Measurement of gel strength>
30 g of the gel-like composition is placed in a container (cylindrical shape with an inner diameter of 30 mm and a height of 90 mm), and the gel strength is measured under the following measurement conditions using a rheometer (“SUNRHEOMETER CR-500DX”, Sun Science Co., Ltd.). did.
Measurement mode: Constant depth measurement mode (MODE20)
Pressure-sensitive shaft: Disc-shaped sample table with a diameter of 10 mm and a thickness of 1 mm Sample table speed: 60 mm / min Set value of indentation depth: 40 mm
Measurement temperature: 25 ° C

<Evaluation of urine splash suppression effect>
The effect of suppressing urine splash was evaluated by the following test simulating urine splash on the bowl surface of the toilet bowl.

Vertical 109 mm, horizontal 109 mm, cut tiles ( "KY tile P4-100", Nippon Test Panel Co., Ltd.) of sanitary ware thickness 0.5cm in the center of the 4.5 cm ² approximately adhesion area the gel composition 7 g, It was directly attached so that the adhesion amount was about 1.6 g / cm ^2. The gel-like composition was attached to the cut tile by discharging it from a pump-type container containing the gel-like composition to the cut tile.

Next, the cut tile to which the gel-like composition was attached was fixed on a table placed on a horizontal surface at an angle of 60 ° so that the adhesion surface of the gel-like composition was on the upper side, and further, the fixed cut tile was fixed. A3 size white paper was fixed horizontally at a distance of 10 cm from the top in the horizontal direction (the state of FIG. 2A; in FIG. 2A, 1: cut tile, 2: gel-like composition, 3). : White paper, 4: stand). Next, using a syringe containing blue colored water (an aqueous solution containing 0.5 g / l of blue No. 1) (with a discharge port diameter of 2 mm and a diameter of 2 mm, blue coloring is performed from a place 15 cm away from the cut tile in the vertical direction. 50 ml of water was sprayed onto the gel composition in about 2 seconds (state B in FIG. 2; in FIG. 2B, 1: cut tile, 2: gel composition, 3: white paper, 4: table, 5: blue. Colored water, 6: Syringe). Then, the degree of water splash was evaluated by image analysis of the white paper-like material to which the bounced blue-colored water adhered. In the image analysis, the blue-colored water adhered most to the white paper-like material. An image (analyzed image) in which a rectangular range of 180 mm × 400 mm is specified so that the area is the center is imported into ImageJ (image processing software), a threshold value that can distinguish white and blue is set, and binarization is performed. The ratio of the area occupied by blue to the entire analyzed image (blue area ratio,%) was calculated.

In addition, as a control, the degree of urine splash was evaluated under the same conditions as described above without adhering the gel-like composition to the cut tile.

The results are shown in Table 1. As a result, it was confirmed that water splash can be suppressed by providing a gel-like composition containing a polyoxyalkylene block polymer on the cut tile (Examples 1 to 4). In particular, it was found that the gel-like composition having a gel strength of 210 gf / mm ² or less, particularly 120 gf / mm ^{2 or less, can remarkably suppress water splash.}

That is, from this result, it was clarified that urine splash can be suppressed by adhering a gel-like composition containing a polyoxyalkylene block polymer to the bowl surface of a toilet bowl that is directly exposed to urine when urinating.

A Part of the bowl surface of the toilet bowl to which the gel-like composition for suppressing urine splash is attached when urinating in the sitting or upright posture B The bowl of the toilet bowl to which the gel-like composition for suppressing urine splash is attached when urinating in the upright posture Surface area 1 Cut tile 2 Gel composition 3 White paper 4 units 5 Blue colored water 6 Toilet

Claims (4)

A gel-like composition for suppressing urine splash, which contains a polyoxyalkylene block polymer and is used by adhering it to the bowl surface of a toilet bowl. The gel-like composition for suppressing urine splash according to claim 1, further comprising a polyoxyalkylene alkyl ether. The gel-like composition for suppressing urine splash according to claim 1 or 2, which is used for suppressing urine splash when urinating in a sitting posture with a Western-style toilet bowl. A method for suppressing urine splash, in which a gel-like composition containing a polyoxyalkylene block polymer is attached to a portion of the bowl surface of a toilet bowl that is directly exposed to urinated urine.

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