Floor coating whitening restoration agent

Abstract

To provide a floor coating whitening restoration agent that can simply repair and restore the coating whitened from alcohol adhesion back to its original condition.SOLUTION: A floor coating whitening restoration agent comprises (A component) 50 wt.%-90 wt.% of an alcohol and (B component) 10 wt.%-50 wt.% of one or more selected from ethylene glycol monoalkyl ether, methoxy butanol, diethylene glycol monoalkyl ether, diethylene glycol diethyl ether, triethylene glycol dialkyl ether, propyleneglycol alkyl ether, and dipropyleneglycol alkyl ether.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a floor coating whitening restoration agent that restores whitened portions of floor coatings that have been whitened by the adhesion of alcohol. [Background technology]

[0002] BACKGROUND ART For the purpose of making floors shiny or the like, a coating agent containing as its main component an emulsion of a synthetic resin such as an acrylic resin or a urethane resin is applied to the floor surface to form a coating.

[0003] Such coatings containing synthetic resins as the main component are formed from known coating agents that contain not only a synthetic resin emulsion in which a polymer is uniformly dispersed in water, but also a polyvalent metal compound for forming metal bridges and a plasticizer for imparting flexibility to the coating formed from the polymer.

[0004] These coating agents have the problem that when alcohol-containing liquids come into contact with the coating, the areas that come into contact with the coating turn white, potentially damaging the aesthetics of the floor. Specifically, when the coating comes into contact with an alcohol-containing liquid, the alcohol component of the liquid penetrates into the coating through the gaps between the polymer particles that make up the coating, disrupting the alignment of the polymer particles. When the alcohol evaporates in this state, the polymer particles reform in a disordered alignment, creating spaces between the polymer particles, resulting in whitening due to diffuse reflection of light.

[0005] To repair the whitened areas, the whitened areas must be peeled off and a new coating applied, but this is a time-consuming process. Therefore, a new solution to prevent whitening of coatings is desired. This is particularly true in hospitals, where alcohol-based disinfectants are widely used. Furthermore, with the increasing availability of hand sanitizers in public places in recent years, the risk of whitening of floor coatings has increased, making this a growing demand.

[0006] Conventionally, as one of the countermeasures against whitening of floor surfaces, for example, a decorative sheet is a decorative sheet composed of a laminate including at least a base sheet and a surface protective layer in this order in the thickness direction, and the surface protective layer is formed by laminating a second surface protective layer and a first surface protective layer adjacent to each other in this order from the base sheet side, and (1) the first surface protective layer contains an ionizing radiation curable resin including two kinds of aliphatic urethane acrylates, namely, resin A and resin B, wherein the resin A is an aliphatic urethane acrylate having an isocyanurate skeleton, and the resin B is an aliphatic urethane acrylate having an alicyclic skeleton without an isocyanurate skeleton. (2) the first surface protective layer has a nanoindentation hardness of 160 MPa or more and 240 MPa or less; (3) the second surface protective layer has a nanoindentation hardness of 100 MPa or more and 240 MPa or less, and the nanoindentation hardness is smaller than that of the first surface protective layer; and (4) the first surface protective layer further has irregularities, and the average spacing Sm of the irregularities is 180 μm or more and 400 μm or less, the maximum height Rz is 20 μm or more and 50 μm or less, and the static friction coefficient is 0.37 or more (see, for example, Patent Document 1).

[0007] This prior art technique can prevent the whitening of floor surfaces when an acrylic coating comes into contact with ethanol. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-297426 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in the case of the decorative sheet described in Patent Document 1, forming the coating layer is time-consuming. Therefore, when it is necessary to form a coating on the floor surface of a large area, such as in a shopping center or hospital, there is a problem of high costs. Furthermore, for floors that already have a coating applied, the coating must be removed before the decorative sheet is applied, which again poses problems of time and cost.

[0010] Unlike the invention described in Patent Document 1, the inventors of the present invention have conducted extensive research into a method for easily repairing the whitening of coatings that have already been applied and restoring them to their original state, in order to address the issue of whitening of coatings, and have come up with the present invention.

[0011] An object of the present invention is to provide a floor coating whitening restoration agent that can easily repair whitening of a coating caused by the adhesion of alcohol and restore the coating to its original state. [Means for solving the problem]

[0012] In order to solve the above problems, the floor coating whitening restoration agent of the present invention is a floor coating whitening restoration agent that repairs whitened areas of a floor that has been applied with a floor coating containing a synthetic resin emulsion as a main component that has been whitened by an alcohol-containing liquid, and restores the whitened area from the whitened state, and comprises: One or more selected from ethanol, methanol, isopropyl alcohol, isobutyl alcohol, n-propyl alcohol, and 1-butanol and 10 wt% to 50 wt% of one or more species selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monoalkyl ether, diethylene glycol diethyl ether, triethylene glycol dialkyl ether, propylene glycol alkyl ether, and dipropylene glycol alkyl ether as component B.

[0013] In the present invention, the component A is ethanol, the component B is one or more selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monobutyl ether, diethylene glycol diethyl ether, and dipropylene glycol alkyl ether, and the blending amount of the component B can be 40 wt% or less.

[0014] In the present invention, the component A is ethanol, the component B is 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether, and the blending amount of the component B can be 50 wt % or less.

[0015] In the present invention, the component A is ethanol, the component B is one selected from ethylene glycol tert-butyl ether, 3-methoxy-1-butanol, and 3-methoxy-3-methyl-1-butanol, and the blending amount of the component B can be 40 wt% or less.

[0016] In the present invention, the component A is ethanol, the component B is one selected from ethylene glycol monobutyl ether, ethylene glycol monoalkyl ether, diethylene glycol monomethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monobutyl ether, and dipropylene glycol dimethyl ether, and the blending amount of the component B can be 30 wt% or less.

[0017] In the present invention, the component A is ethanol, the component B is any one of diethylene glycol monoethyl ether, triethylene glycol alkyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether, and the blending amount of the component B can be 20 wt% or less.

[0018] In the present invention, the component A is one selected from methanol, isopropyl alcohol, and isobutyl alcohol, the component B is 3-methoxy-1-butanol, and the blending amount of the component B can be 30 wt% or less.

[0019] In the present invention, the component A is either n-propyl alcohol or 1-butanol, the component B is 3-methoxy-1-butanol, and the blending amount of the component B can be 20 wt % or less.

[0020] The present invention may contain 35 wt % or less of water in addition to the components A and B. [Effects of the Invention]

[0021] The floor coating whitening restoration agent of the present invention can be applied to whitened areas caused by an alcohol-containing liquid adhering to a floor coated with a floor coating whose main component is a synthetic resin emulsion, thereby repairing the whitening and restoring the floor's appearance. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an example of an embodiment of the floor coating whitening restoration agent according to the present invention will be described.

[0023] The floor coating whitening restoration agent according to the present invention contains component A consisting of an alcohol, and component B consisting of one or more alcohols selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monoalkyl ether, diethylene glycol diethyl ether, triethylene glycol dialkyl ether, propylene glycol alkyl ether, and dipropylene glycol alkyl ether.

[0024] The alcohols that are component A may include one or more selected from ethanol, methanol, isopropyl alcohol, isobutyl alcohol, n-propyl alcohol, and 1-butanol.

[0025] The blending ratio of component A to component B is 50 wt% to 90 wt% for component A and 10 wt% to 50 wt% for component B. The effects of the present invention are achieved with only components A and B, but other components such as preservatives, stabilizers, disinfectants, etc. may also be included as necessary.

[0026] Suitable examples of the selection and blending ratio of component A and component B include the following.

[0027] Component A is ethanol, component B is one or more selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monobutyl ether, diethylene glycol diethyl ether, and dipropylene glycol alkyl ether, and the blending amount of component B is 40 wt% or less.

[0028] Component A is ethanol, component B is 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether, and the blending amount of component B is 50 wt % or less.

[0029] Component A is ethanol, component B is one selected from ethylene glycol tert-butyl ether, 3-methoxy-1-butanol, and 3-methoxy-3-methyl-1-butanol, and the blending amount of component B is 40 wt% or less.

[0030] Component A is ethanol, component B is one selected from ethylene glycol monobutyl ether, ethylene glycol monoalkyl ether, diethylene glycol monomethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monobutyl ether, and dipropylene glycol dimethyl ether, and the blending amount of component B is 30 wt% or less.

[0031] Component A is ethanol, component B is one of diethylene glycol monoethyl ether, triethylene glycol alkyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether, and the blending amount of component B is 20 wt% or less.

[0032] The component A is one selected from methanol, isopropyl alcohol, and isobutyl alcohol, the component B is 3-methoxy-1-butanol, and the blending amount of the component B is 30 wt % or less.

[0033] Component A is either n-propyl alcohol or 1-butanol, component B is 3-methoxy-1-butanol, and the blending amount of component B is 20 wt% or less.

[0034] The floor coating whitening restoration agent of the present invention is sprayed or dropped onto the whitened area of ​​the coating and left to stand. This causes the polymer particles that have formed a film in a disordered arrangement to swell, returning the arrangement of the polymer particles to a less disordered state and allowing the film to be re-formed, repairing the whitened area of ​​the coating and restoring its beauty.

[0035] The floor coating agent of the present invention is commonly called "floor polish" and is applied to floor materials for the purpose of protecting them and improving their aesthetic appeal. The coating agent is made from a known coating agent containing, in addition to the main component, an emulsion of a synthetic resin such as an acrylic resin or a urethane resin, a polyvalent metal compound for forming metal bridges, and a plasticizer for imparting flexibility to the coating formed from the polymer. [Example]

[0036] The present invention will be explained in more detail below with reference to the results of performance tests in Examples, although the present invention is not limited to these Examples.

[0037] The performance test was carried out as follows.

[0038] <Creating test panels> Composition vinyl floor tiles (Toli Corporation's "Machiko V MV-33") were washed and dried, and then coated twice with a coating agent (Rinrei Corporation's "Pro Balance Next") to prepare the coated tiles. Gauze was used as the applicator to apply the coating agent, and the amount applied each time was 10 mL / m. 2 The interval between the first and second applications was 45 minutes. 24 hours after the coating agent was applied, 0.5 ml of alcohol-based hand sanitizer ("Gojo IHS-N" manufactured by Gojo Japan Co., Ltd.) was dropped onto the coating on the tile, and the alcohol-based hand sanitizer was allowed to dry at room temperature (23°C) for 3 hours. The coating surface was then rinsed with tap water and allowed to dry at room temperature for 24 hours to obtain a test panel for evaluating whitening recovery properties, where the coating had whitened.

[0039] <Test Method> 0.2 ml of each of the compositions of Examples and Comparative Examples shown in Tables 1 to 10 was dropped onto the whitened portion of the test plate and dried at room temperature. After drying, the degree of whitening restoration was evaluated visually by sensory evaluation and by L-test using a colorimeter ("CR-400" manufactured by Konica Minolta, Inc.). * This was done by measuring the L * is an index of brightness, and the larger the value, the brighter (whiter) the color tone. * The L of the whitened coating (before the composition was applied) was 22.3 to 22.4. * is 33.5 to 34.5.

[0040] <Visual sensory evaluation> The sensory evaluation was carried out by visual inspection according to the following criteria. 〇: The whiteness disappears and the skin returns to its pre-whitening state △: Whiteness is reduced and beauty is restored ▲: Whiteness is slightly reduced ×: No change observed

[0041] <L * Evaluation by measurement> L using a colorimeter *The evaluation by measurement was carried out as follows. ○: Under 24 △: 24 or more and less than 26 ▲: 26 or more and less than 28 ×:28 or more

[0042] In addition to the evaluation of whitening restoration described above, in order to examine the practicality of the whitening restoration agent, the time until the composition was completely dried after dripping was measured visually to evaluate its drying property. Furthermore, the time until the adhesiveness disappeared when the dripped portion of the composition was touched with a finger after dripping was taken as the tack loss time, and this was measured to evaluate the ease of tack loss. If the composition is not sufficiently dried or if tack remains, there is a problem that the coating is easily soiled, so the shorter the drying time and tack loss time, the more practical the product. The evaluation of drying property and ease of tack loss was performed according to the following evaluation criteria. <Drying evaluation criteria> 〇: Less than 20 minutes △: 20 minutes or more but less than 40 minutes ▲: 40 minutes or more but less than 60 minutes ×: 60 minutes or more <Evaluation criteria for tack loss> 〇: Less than 5 minutes △: 5 minutes or more but less than 10 minutes ▲: 10 minutes or more but less than 20 minutes ×: 20 minutes or more

[0043] The test results are shown in Tables 1 to 10.

[0044] [Table 1]

[0045] [Table 2]

[0046] [Table 3]

[0047] [Table 4]

[0048] [Table 5]

[0049] [Table 6]

[0050] [Table 7]

[0051] [Table 8]

[0052] [Table 9]

[0053] [Table 10]

[0054] The test results shown in Table 1 showed that by using a composition containing 90 wt% ethanol as component A and 10 wt% of one or more species selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monoalkyl ether, diethylene glycol diethyl ether, triethylene glycol dialkyl ether, propylene glycol alkyl ether, and dipropylene glycol alkyl ether as component B as a floor coating whitening restoration agent, the whitened parts of the coating were restored.

[0055] The test results shown in Tables 2 to 4 show that the floor coating whitening restoration agent in which the component A is ethanol, the component B is 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether, and the blending amount of the component B is 50 wt% or less, the floor coating whitening restoration agent in which the component A is ethanol, the component B is one selected from ethylene glycol tert-butyl ether, 3-methoxy-1-butanol, and 3-methoxy-3-methyl-1-butanol, and the blending amount of the component B is 4 ... and the floor coating whitening restoration agent in which the component A is ethanol, the component B is ethylene glycol monobutyl ether, It has been shown that by using as a floor coating whitening restoration agent a composition in which the component A is one selected from the group consisting of propylene glycol monomethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monobutyl ether and dipropylene glycol dimethyl ether, and the blending amount of component B is 30 wt% or less, and a composition in which the component A is ethanol and the component B is one of propylene glycol monomethyl ether and propylene glycol monoethyl ether, and the blending amount of component B is 20 wt% or less, the whitened parts of the coating can be restored.

[0056] The test results, shown in Table 5, demonstrated that compositions containing alcohols other than ethanol can be used as floor coating whitening restoration agents to restore whitened areas of the coating.

[0057] The test results shown in Table 6 are based on the test results for a composition containing 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether as component B, and show that by using a composition containing multiple species selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monoalkyl ether, diethylene glycol diethyl ether, triethylene glycol dialkyl ether, propylene glycol alkyl ether, and dipropylene glycol alkyl ether as component B as a floor coating whitening restoration agent, the whitened parts of the coating can be restored.

[0058] The test results shown in Table 7 showed that the use of a composition containing ethanol, methanol, or isopropyl alcohol as component A and 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether as component B as a floor coating whitening restoration agent restored the whitened areas of the coating.

[0059] The test results shown in Table 8 showed that by using a composition containing ethanol and methanol as component A and 3-methoxy-3-methyl-1-butanol or ethylene glycol tert-butyl ether as component B as a floor coating whitening restoration agent, the whitened areas of the coating were restored.

[0060] The test results in Table 9 show that by using a composition containing ethanol and methanol as component A and 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether as component B as a floor coating whitening restoration agent, the whitened areas of the coating can be restored.

[0061] The test results in Table 10 show that a composition containing ethanol as component A and 3-methoxy-3-methyl-1-butanol as component B can restore whitened areas of the coating when used as a floor coating whitening restoration agent, even if it contains 35 wt% or less of water.

Claims

1. A floor coating whitening restoration agent that repairs whitened areas of a floor that has been coated with a floor coating containing a synthetic resin emulsion as a main component and has been whitened by an alcohol-containing liquid, thereby restoring the whitened area to its original white state. The component A contains 50 wt % to 90 wt % of one or more selected from ethanol, methanol, isopropyl alcohol, isobutyl alcohol, n-propyl alcohol, and 1-butanol, As component B, it contains 10 wt % to 50 wt % of one or more selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monoalkyl ether, diethylene glycol diethyl ether, triethylene glycol dialkyl ether, propylene glycol alkyl ether, and dipropylene glycol alkyl ether. A floor coating whitening restoration agent characterized by:

2. The component A is ethanol, the component B is one or more selected from ethylene glycol monoalkyl ether, methoxybutanol, diethylene glycol monobutyl ether, diethylene glycol diethyl ether, and dipropylene glycol alkyl ether; 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 40 wt % or less.

3. The component A is ethanol, the component B is 3-methoxy-3-methyl-1-butanol and ethylene glycol tert-butyl ether, 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 50 wt % or less.

4. The component A is ethanol, the component B is one selected from ethylene glycol tert-butyl ether, 3-methoxy-1-butanol, and 3-methoxy-3-methyl-1-butanol; 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 40 wt % or less.

5. The component A is ethanol, the component B is one selected from ethylene glycol monobutyl ether, ethylene glycol monoalkyl ether, diethylene glycol monomethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monobutyl ether, and dipropylene glycol dimethyl ether; 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 30 wt % or less.

6. The component A is ethanol, the component B is any one of diethylene glycol monoethyl ether, triethylene glycol alkyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether, 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 20 wt % or less.

7. The component A is one selected from methanol, isopropyl alcohol, and isobutyl alcohol, The component B is 3-methoxy-1-butanol, 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 30 wt % or less.

8. The component A is either n-propyl alcohol or 1-butanol, The component B is 3-methoxy-1-butanol, 2. The floor coating whitening restoration agent according to claim 1, wherein the blending amount of said component B is 20 wt % or less.

9. 9. The floor coating whitening restoration agent according to claim 1, further comprising 35 wt % or less of water in addition to the component A and the component B.

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