Coating method of coating agent

Abstract

To provide a coating method of a coating agent which can form a coating layer 10 that allows a portion in contact with a foot of a person and a shoe sole, to exhibit an anti-fouling property and a skid-proof property.SOLUTION: A coating agent constituting a coating layer 10 comprises: a silicone resin (D unit silicone resin) represented by an expression (R12SiO2 / 2) in a coupling structure unit; and a silicone resin (T unit silicone resin) represented by an expression (R2SiO3 / 2) in the coupling structure unit. In the silicone resin: a content of the D unit silicone resin is equal to or more than a content of the T unit silicone resin; and the D unit silicone resin forms a linear polysiloxane 12. In the coating layer 10 formed by a coating method of the coating agent enables: suppressing adhesion of dust, because the coating layer is formed of the silicone resin; and exhibiting a skid-proof property because the linear polysiloxane 12 absorbs stress by elastically deforming.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The technical field of the present specification relates to a method for applying a coating agent to areas that come into contact with people's feet or shoe soles, such as floors and bathtubs. [Background technology]

[0002] The areas where people's feet or shoe soles come into contact include floors or bathtubs in corridors, rooms, bathrooms, kitchens, washrooms, or toilets (floors, bathtubs, etc.). Various types of dirt adhere to floors and bathtubs. Patent Document 1 describes a coating agent containing a photocatalyst, which is applied to floors, bathtubs, etc. to form a coating layer, which makes it difficult for dirt to adhere to the floors, bathtubs, etc., and even if dirt does adhere to the floors, bathtubs, etc., it can be easily removed by washing with water. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-105317 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional coating agent described in Patent Document 1, the attached dirt components are decomposed by a photocatalyst, and the decomposed dirt components are washed away by water droplets from washing with water rolling on the surface of the coating layer formed from the coating agent. Therefore, the surface of the coating layer is formed so that water droplets are slippery, and floors, bathtubs, etc. on which the coating agent is applied and the coating layer is formed are slippery for feet and shoe soles, and there is a risk of people falling over due to slipping feet.

[0005] The problem to be solved by the technology of the present specification has been made in consideration of the above-mentioned points, and has an object to provide a method for applying a coating agent that forms a coating layer on floors, bathtubs, etc., which can suppress adhesion of dirt to the coating layer and form a coating layer that has anti-slip properties. [Means for solving the problem]

[0006] The coating agent according to the embodiment of the present specification has a bonding structure unit represented by the formula (R 1 2SiO 2 / 2 ) and silicone resin (D unit silicone resin) represented by the formula (R 2 SiO 3 / 2 ) and a silicone resin (T unit silicone resin) represented by the content of the D unit silicone resin is equal to or greater than the content of the T unit silicone resin; The D unit silicone resin is characterized in that it forms a linear polysiloxane.

[0007] According to the coating agent according to the embodiment of the present specification, the D unit silicone resin forming the linear polysiloxane and the T unit silicone resin crosslinked three-dimensionally are contained. Since the coating layer formed from the coating agent is formed from the silicone resin, adhesion of dirt to the coating layer can be suppressed. In addition, since the content of the D unit silicone resin in the coating agent is equal to or greater than the content of the T unit silicone resin, the coating layer formed from the coating agent contains more linear polysiloxane of the D unit silicone resin than T unit silicone resin crosslinked three-dimensionally. The linear polysiloxane of the D unit silicone resin is bonded to the silicone resin at both ends and is present in the coating layer so as to be capable of stretching and deforming. Therefore, when stress is applied by contact with a person's foot or the like, the coating layer (silicone resin) deforms to absorb the stress, and the linear polysiloxane stretches and deforms to absorb the stress, providing a large resistance to contact. In other words, the coating agent according to the embodiment can provide the coating layer formed from the coating agent with antifouling and antislip properties.

[0008] Here, in the coating agent, the linear polysiloxane may have an average degree of polymerization of 20-600.

[0009] According to this, the linear polysiloxane can expand and contract appropriately, so that it can provide a large resistance to contact with the feet and the like, and can exhibit better anti-slip properties.

[0010] In the above coating agent, the bonding structural unit has the formula (R 3 O)3SiY 1 ) and / or a bonded structural unit having the formula ((R 4 O)2SiCH3Y 2 ) (D unit alkoxysilane) may be contained.

[0011] This allows for improved adhesion to floors, bathtubs, etc.

[0012] The coating agent may also be used for floors and bathtubs.

[0013] This can prevent people from falling on the floor or in the bathtub.

[0014] Here, the coating method according to the embodiment is a method for coating a coating agent onto a portion that comes into contact with a person's foot or shoe sole, comprising the steps of: The coating agent is The bond structure unit has the formula (R 1 2SiO 2 / 2 ) and silicone resin (D unit silicone resin) represented by the formula (R 2 SiO 3 / 2 ) and a silicone resin (T unit silicone resin) represented by the content of the D unit silicone resin is equal to or greater than the content of the T unit silicone resin; The D unit silicone resin forms a linear polysiloxane, The coating agent is characterized in that it exerts antifouling and antislip properties on the part to be coated.

[0015] According to the method for applying the coating agent of the embodiment, it is possible to form a coating layer that exhibits antifouling and antislip properties on the part that comes into contact with a person's foot or shoe sole.

[0016] Here, in the above-mentioned coating agent application method, the linear polysiloxane may have an average degree of polymerization of 20-600.

[0017] This allows the anti-slip properties to be more effectively exhibited.

[0018] In the coating method of the coating agent, the bonding structure unit is formed of the formula ((R 3 O)3SiY 1 ) and / or a bonded structural unit having the formula ((R 4O)2SiCH3Y 2 ) (D unit alkoxysilane) may be contained.

[0019] This allows for improved adhesion to the areas that come into contact with a person's foot or shoe sole.

[0020] In the above-mentioned coating agent application method, the area that comes into contact with a person's foot or shoe sole may be a floor or a bathtub.

[0021] This allows floors and bathtubs to exhibit antifouling and anti-slip properties.

[0022] In the above-mentioned coating agent application method, the part that comes into contact with a person's foot or shoe sole may be a deck or floor of a ship.

[0023] This makes it possible to provide anti-fouling and anti-slip properties to the ship's deck and floor, which are exposed to ship water (seawater). Effect of the Invention

[0024] According to the method for applying the coating agent according to the embodiment of the present specification, a coating layer that exhibits antifouling and antislip properties can be formed on the area that comes into contact with a person's foot or shoe sole. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a cross-sectional image of the inner surface of a bathtub having a coating layer formed by a coating agent application method according to an embodiment of the present specification. [Diagram 2] FIG. 2 is a diagram showing the bond structure units of a silicone resin. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the coating agent and the coating method according to the embodiment of the present specification will be described. The scope of the present invention is not limited to the scope disclosed in the embodiment. The coating agent of the embodiment is applied to the floor or bathtub of a corridor, room, bathroom, kitchen, washroom, or toilet (floor or bathtub, etc.) as a part where a person's foot or shoe sole comes into contact, particularly the floor or bathtub of a bathroom, kitchen, washroom, or toilet that is easily wetted with water, and forms a coating layer 10 that suppresses adhesion of dirt generated on the floor or bathtub, and exhibits anti-slip properties. The coating agent of the embodiment can also be applied to the floor or bathtub of buildings such as commercial facilities and office buildings, vehicles such as buses and trains, ships or aircraft, or decks (deck) or floors of ships such as pleasure boats, fishing boats, passenger ships, or cargo ships. In addition, in this specification, the amount or ratio of the coating agent is expressed in mass units and in the paint state (wet state) including volatile content, unless otherwise specified. Furthermore, "%" representing the blending unit means "% by mass" unless otherwise specified.

[0027] The material of the substrate 1 of the floor, bathtub, etc. (hereinafter, including the deck (top) and floor of a ship) to which the coating agent of the embodiment is applied may be pottery, ceramics, stone, metal, wood, synthetic resin, etc. Examples of stone materials include marble and granite. Examples of metal materials include enamel in which a glassy glaze is coated on the metal surface and baked, and stainless steel plate. Examples of synthetic resin materials include synthetic resin molded bodies formed by molding a mixture of synthetic resin and filler, and fiber reinforced plastics (FRP). There are no particular limitations on the material of the floor, bathtub, etc. to which the coating agent of the embodiment is applied, but FRP, which has poor durability, is preferably used because the durability of the FRP can be improved by applying the coating agent of the embodiment.

[0028] The coating agent of the embodiment has a bonding structure unit represented by the formula (R 1 2SiO2 / 2 ) (D unit silicone resin) represented by the formula (R 2 SiO 3 / 2 ) (T unit silicone resin) in an amount equal to or less than the amount of D unit silicone resin, and the D unit silicone resin forms a linear polysiloxane.

[0029] The bond structure unit has the formula (R 1 2SiO 2 / 2 ) (D unit silicone resin) has two siloxane bond bonding points and two organic substituents (R 1 ), and because it has two siloxane bond bonding points, it forms a coating with a linear (two-dimensional) structure and flexibility. D-unit silicone resin forms linear polysiloxane 12 with silanol groups (Si-OH) at both ends. The silanol groups at both ends react with other functional groups such as Si-OH and Si-OR to bond. Organic substituents (R 1 ) (side group) is a methyl group or a phenyl group, and in another embodiment, can be a methyl group.

[0030] The average degree of polymerization of the linear polysiloxane 12 formed from the D unit silicone resin can be 20 to 600 (approximately 1500 to 45000 as the average molecular weight). This is because the linear polysiloxane 12 can be appropriately stretched and deformed, and can provide a large resistance to contact with feet, soles, etc., and can exhibit anti-slip properties. If the average degree of polymerization is less than 20, the linear chain of the linear polysiloxane 12 is short, and the linear polysiloxane 12 is small in stretching and deformation, and there is a risk that it cannot provide resistance to contact with human feet, soles, etc. On the other hand, if the average degree of polymerization exceeds 600, the linear chain of the linear polysiloxane 12 is too long, and the coating layer 10 has excessive flexibility, and there is a risk that dirt will adhere due to the flexibility. In another embodiment, the average degree of polymerization of the linear polysiloxane 12 formed from the D unit silicone resin can be 40 to 400 (average molecular weight of about 3000 to 30000), and in yet another embodiment, the average degree of polymerization can be 60 to 200 (average molecular weight of about 4500 to 15000).

[0031] The D-unit silicone resin may be a commercially available product. Examples of commercially available D-unit silicone resins include X-21-5841, KF-9701, X-21-5847, and X-21-5849 (manufactured by Shin-Etsu Chemical Co., Ltd.), DMS-S15, DMS-S21, DMS-S27, DMS-S31, DMS-S32, DMS-S33, and PDS-1615 (manufactured by Azumax Co., Ltd.), XF42-B0970, XC96-723, YF3800, XF3905, YF3057, YF3807, YF3802, and YF3897 (manufactured by Momentive Performance Materials Japan, LLC), and XIAMETER PMX-0930 Silanol Fluid (manufactured by Dow Toray Co., Ltd.). These form a linear polysiloxane 12 having silanol groups at both ends.

[0032] The bond structure unit has the formula (R 2 SiO 3 / 2) (T unit silicone resin) has three siloxane bond bonding points and one organic substituent (R 2 ) resin. T-unit silicone resin has three siloxane bond bonding points, so it forms a hard coating with a three-dimensional network structure. 2 ) (the organic substituent) can be a methyl group or a phenyl group, or alternatively a methyl group.

[0033] The T-unit silicone resin may be a commercially available product. Examples of commercially available T-unit silicone resins that may be used include KC-89S, KR-515, KR-500, and X-40-9225 (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0034] The coating agent of the embodiment for forming the coating layer 10 contains as a main component a mixture of a D unit silicone resin forming a linear polysiloxane 12 and a T unit silicone resin that crosslinks three-dimensionally, and the surface of the coating layer 10 formed from the coating agent has a water-repellent R 1 Si and R 2 Since it is coated with an organosilane of Si, adhesion of dirt is suppressed.

[0035] In addition, since the coating agent of the embodiment has a content of D unit silicone resin equal to or greater than the content of T unit silicone resin, the coating layer 10 formed from the coating agent contains more linear polysiloxane 12 of D unit silicone resin than T unit silicone resin, which is crosslinked three-dimensionally. The linear polysiloxane 12 of D unit silicone resin is bonded to these silicone resins through silanol groups at both ends, and the linear polysiloxane 12 is present in the coating layer 10 so as to be capable of stretching and deforming. Therefore, when stress is applied due to contact with a foot or a sole, the coating layer 10 (silicone resin) having flexibility deforms to absorb the stress, and the linear polysiloxane 12 deforms to absorb the stress, providing a large resistance to contact. In other words, the coating layer 10 formed from the coating agent of the embodiment can exhibit anti-slip properties.

[0036] The content ratio of D unit silicone resin / T unit silicone resin (D / T content ratio) in the coating agent forming the coating layer 10 can be D / T content ratio = 50 / 50 to 80 / 20 by mass ratio. This is because the content ratio of the linear polysiloxane 12 in the D unit silicone resin is high, and the linear polysiloxane 12 can absorb stress by expanding and contracting deformation, thereby providing a large resistance to contact with the foot, the sole, etc. If the D / T content ratio is less than 50 / 50, the content ratio of the linear polysiloxane 12 that expands and contracts to absorb stress is low, and there is a risk that it is not possible to provide a large resistance to contact with the foot, the sole, etc. On the other hand, if the D / T content ratio exceeds 80 / 20, the coating layer 10 formed has excessive flexibility, and dirt is easily attached to the surface of the coating layer 10, and there is a risk that it is not possible to suppress the attachment of dirt. In another embodiment, the D / T content ratio of the coating agent can be 55 / 45 to 75 / 25, and in yet another embodiment, it can be 60 / 40 to 70 / 30.

[0037] The organic substituents (R 1 , R 2 ) can be a methyl group or a phenyl group. 1 Si and R 2 This is because Si can have excellent water repellency, and adhesion of dirt to the surface of the coating layer 10 can be suppressed. In another embodiment, the organic substituent (R 1 , R 2 ) can be a methyl group.

[0038] A mixture of T unit silicone resin and D unit silicone resin can be used, and a mixture of T unit silicone resin and D unit silicone resin (hereinafter sometimes referred to as DT unit silicone resin) can be used as a commercially available product. DT unit silicone resin forms a hard coating with flexibility. As commercially available DT unit silicone resin, KR-300, KR-255, X-40-9218, X-40-9246, X-40-9250, X-40-9227, X-40-9238, X-40-2667A, X-40-2756, X-41-1056, KR-112, KR-282, KR-242A, KR-9218 (manufactured by Shin-Etsu Chemical Co., Ltd.), etc. can be used.

[0039] The coating agent can be a combination of a DT unit silicone resin and a D unit silicone resin that forms a linear polysiloxane 12. By combining the DT unit silicone resin and the D unit silicone resin, the formed coating layer 10 can have the linear polysiloxane 12 made of the D unit silicone resin inside a hard coating having flexibility formed by the DT unit silicone resin, so that the linear polysiloxane 12 can be stretched and deformed. As a result, the coating layer 10 formed from the coating agent combining the DT unit silicone resin and the D unit silicone resin has flexibility, so that the coating layer 10 (silicone resin) can be more deformable and can absorb stress caused by contact with the foot, etc., and the linear polysiloxane 12 can stretch and deform to absorb stress, providing a large resistance to contact and exhibiting anti-slip properties.

[0040] In the coating agent of the embodiment, the bond structure unit has the formula ((R 3 O)3SiY 1 ) and / or a bonded structural unit having the formula ((R 4 O)2SiCH3Y 2 ) (D unit alkoxysilane).

[0041] T unit alkoxysilane ((R 3 O)3SiY 1 ) contains one organic functional group (Y 1 ), an alkoxysilyl group having hydrolyzability and condensability ((R 3 O)3Si), a compound (silane coupling agent) containing three alkoxy groups (R 3 The alkoxysilyl group having the alkoxy group T is hydrolyzed and condensed by moisture in the air, etc., to copolymerize with the silicone resin and crosslink the silicone resin with the three alkoxy groups. The T-unit alkoxysilane is chemically bonded to the substrate 1 such as a floor or a bathtub, so that it adheres three-dimensionally to the floor or the bathtub, and the coating layer 10 formed from the coating agent forms a strong coating. In addition, the T-unit alkoxysilane can crosslink the silicone resin, so that it can suppress the excessive flexibility of the coating layer 10 and harden the silicone resin (coating layer 10).

[0042] On the other hand, D unit alkoxysilane ((R 4 O)2SiCH3Y 2 ) contains one organic functional group (Y 2 ), an alkoxysilyl group having hydrolyzability and condensability ((R 4 O)2Si), a compound (silane coupling agent) containing two alkoxy groups (R 4 The alkoxysilyl group having the unit D is hydrolyzed and condensed by moisture in the air, etc., to copolymerize with the silicone resin and chemically bond to the substrate 1 such as a floor or a bathtub. The D unit alkoxysilane adheres two-dimensionally to the floor or bathtub, and the coating layer 10 formed from the coating agent forms a flexible film that can be adhered to the substrate 1 such as a floor or a bathtub so as to conform to the surface.

[0043] The alkoxy group (R 3 O, R 4O) can be a methoxy group or an ethoxy group which undergoes rapid hydrolysis and dehydration condensation reactions, and in another embodiment, can be a methoxy group which undergoes faster hydrolysis and dehydration condensation reactions.

[0044] The organic functional groups of T unit alkoxysilane and D unit alkoxysilane (Y 1 , Y 2 ) is the organic substituent (R 1 , R 2 ) and has excellent adhesion to the substrate 1, it can be an epoxy group (glycidoxy group), an amino group, an acrylic group, or a methaacrylic group. In another embodiment, it can be an epoxy group or an amino group, and in yet another embodiment, it can be an epoxy group.

[0045] The coating agent of the embodiment forming the coating layer 10 can contain 1 to 10 mass % of T-unit alkoxysilane and 1 to 10 mass % of D-unit alkoxysilane, and the content of T-unit alkoxysilane can be greater than the content of D-unit alkoxysilane. This is because it is possible to provide excellent adhesion to the substrate 1 and to crosslink the silicone resin (coating layer 10) to harden it.

[0046] Examples of the T unit alkoxysilane that can be used include 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, and 3-acryloxypropyltrimethoxysilane.

[0047] Furthermore, examples of D unit alkoxysilanes that can be used include 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, N-2-(aminoethyl)-3-aminopropylmethyldimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, and 3-methacryloxypropylmethyldiethoxysilane.

[0048] The coating agent of the embodiment can contain 20 to 60 mass % of diluent. The diluent can be an organic solvent, volatile silicone oil and / or isoparaffin solvent. By containing a diluent in the coating agent, the coating agent can have high fluidity and excellent coating workability.

[0049] A curing catalyst can be added to the coating agent to accelerate curing. The curing catalyst may be any catalyst capable of accelerating the curing reaction of the silicone resin, and oxides, amines, or metals can be used. In another embodiment, a metal catalyst having excellent curing properties can be used as the curing catalyst. In yet another embodiment, a titanium catalyst can be used among the metal catalysts, and a titanium organometallic compound catalyst (tetrabutyl titanate) can be used among the titanium catalysts.

[0050] The curing catalyst can be added in an amount of 0.5 to 5% by mass to the coating agent. This is because the curing property of the coating agent can be suitably improved. If the amount of the curing catalyst added to the coating agent is less than 0.5% by mass, the curing property of the coating agent may not be suitably improved. On the other hand, if the amount exceeds 5% by mass, the amount added becomes excessive, which may be uneconomical. In another embodiment, the content of the curing catalyst in the coating agent may be 0.8 to 2% by mass.

[0051] The coating agent can be a one-component (one-liquid) coating agent in which a curing catalyst is added to the coating agent in advance, or a two-component (two-liquid) coating agent in which a curing catalyst (curing agent) is mixed into the coating agent (main agent) immediately before use (application).

[0052] By making the coating agent a one-component material (coating agent), it is possible to eliminate the need to mix immediately before use (application). However, attention must be paid to the acceleration of hardening during storage. Therefore, by making the coating agent a two-component material, it is possible to suppress the acceleration of hardening during storage of the material. When using a two-component material, the main agent can be a mixture of silicone resin and, if necessary, alkylalkoxysilane, and the hardener can be a mixture of a hardening catalyst and a diluent.

[0053] The coating agent can also be an emulsion type coating agent using water as a dispersion medium. For example, the emulsion type coating agent can be produced by rapidly stirring a premix mixture of silicone resin, surfactant, water, etc., to form micelles (emulsions) in which the surfactant gathers with the hydrophilic groups on the outside. The surfactant can be a combination of a nonionic surfactant and an anionic surfactant. A curing catalyst can be added to the premix mixture as necessary. By using an emulsion type coating agent using water as a dispersion medium, the solvent volatilized from the coating agent during painting is mainly water, not an organic solvent, making it environmentally friendly and ensuring the health safety of the painter.

[0054] Next, a method for applying the coating agent according to the embodiment will be described. The method for applying the coating agent includes a degreasing step and a coating agent application step in this order.

[0055] The degreasing process is the process of removing grease and oil from the surfaces to be painted, such as floors and bathtubs, and cleaning them. The degreasing process is carried out by using a cleaning agent to wipe off grease and oil with a rag or similar. The cleaning agent used is ethanol when there is almost no dirt (stains the size of fingerprints), cleaning thinner (lacquer thinner) when there is only a small amount of dirt (dirty components such as grease are attached), and alkaline cleaning agents such as sodium metasilicate, which can break down these substances, are used when there is dirt (floors or bathtubs that have already been used and have adhesions of grease, protein, silica, etc.). Unlike ethanol and cleaning thinner, alkaline cleaning agents do not volatilize, so when using an alkaline cleaning agent, it is necessary to wash it off with water afterwards.

[0056] The coating agent application process will be explained separately for cases where the material of the floor, bathtub, etc. is inorganic, such as pottery, ceramics, stone, metal, etc., and for cases where the material is organic, such as wood, synthetic resin, etc. When the floor, bathtub, etc. is organic, it is preferable to use a coating agent containing T unit alkoxysilane and / or D unit alkoxysilane.

[0057] In the coating agent application process when the material of the floor, bathtub, etc. is inorganic, the coating agent of the embodiment is applied to the floor, bathtub, etc. using a spray, brush, etc., and spread with a rag, etc. The covering layer 10 formed from the coating agent adheres firmly and adaptively to the inorganic substrate 1 such as the floor, bathtub, etc., of the hydrolyzable alkoxysilyl groups of the D unit silicone resin and the T unit silicone resin contained in the coating agent.

[0058] In the coating agent application process when the material of the floor or bathtub is organic, the coating agent of the embodiment is applied to the floor or bathtub using a spray or brush, and then spread with a rag. The coating layer 10 formed from the coating agent is formed by the organic functional groups (Y 1 , Y 2) adheres firmly and conformably to the organic substrate 1 such as a floor or a bathtub.

[0059] The surface of the coating layer 10 formed from the coating agent is coated with an organic silane, which inhibits adhesion of dirt. The coating layer 10 contains D-unit silicone resin and T-unit silicone resin, which makes the coating layer 10 (silicone resin) deformable and capable of absorbing stress, while the linear polysiloxane 12 expands and contracts to absorb stress, providing high resistance to contact and exhibiting anti-slip properties.

[0060] The amount of coating agent applied is 0.1 to 20 g / m2, calculated as the non-volatile content of the coating agent. 2 (film thickness: about 0.1 to 20 μm). This is because adhesion of dirt can be suitably suppressed and anti-slip properties can be suitably exhibited. 2 If the coating amount is less than 20 g / m, the surface of the substrate 1 may not be covered due to uneven coating, and the coating may not be able to prevent adhesion of dirt or to fully exhibit anti-slip properties. 2 If the coating amount exceeds this range, the coating agent may drip during application, resulting in poor application workability. 2 (film thickness: about 0.2 to 15 μm), and in yet another embodiment, the coating amount is 1 to 10 g / m 2 (film thickness: about 1 to 10 μm). For convenience, the film thickness is set to 1 g / cm3 when the density of the non-volatile content of the coating agent is taken as 1 g / cm3. 3 This is what we have defined and sought. EXAMPLES

[0061] Details of the silicone resin used in the examples are shown in Table 1, details of the alkoxysilane in Table 2, and the composition of the coating agent and the results of the physical property evaluation in Tables 3 to 5. Test Examples 1 to 5 and 7 to 15 are examples, and Test Examples 6 and 16 are comparative examples.

[0062] [Table 1]

[0063] [Table 2]

[0064] [Table 3]

[0065] [Table 4]

[0066] [Table 5]

[0067] In the examples, the test specimens were stainless steel plates (inorganic substrate 1) and FRP plates (organic substrate 1) that resembled floors and bathtubs. They were degreased with ethanol, then coated with the coating agent of the examples, cured, and then used for the test. The amount of coating agent applied was 10±1 g / m2, calculated as the non-volatile content of the coating agent. 2 (Film thickness: about 10±1μm). The physical properties of the coating were evaluated by carrying out adhesion tests, water repellency tests, stain adhesion tests, and slip resistance tests on the test specimens. The evaluation methods for each test are as follows.

[0068] <Adhesion test> The adhesion test was judged according to the following standard: Standard: General test methods for paints - Part 5: Mechanical properties of coating film - Section 6: Adhesion (cross-cut method) (JIS K 5600-5-6:1999). The results were evaluated as follows. ○: Category 0 (the edges of the cuts are completely smooth and there is no peeling at any of the grid meshes) or Category 1 (small peeling of the coating at the intersections of the cuts. The cross-cuts do not clearly affect more than 5% of the area). △: Category 2 (the coating is peeling along the edges of the cuts and / or at the intersections. The cross-cuts do not clearly affect more than 5% of the area but not more than 15% of the area). or Category 3 (the coating is partially or completely peeled along the edges of the cuts and / or various parts of the mesh are partially or completely peeled. The cross-cuts do not clearly affect more than 15% of the area but not more than 35% of the area). ×: Category 4 (the coating is partially or completely peeled along the edges of the cuts and / or several meshes are partially or completely peeled. The cross-cuts do not clearly affect more than 35% of the area). or Category 5 (peeling that cannot be classified as Category 4). The adhesion test was performed for both inorganic substrate 1 and organic substrate 1, and the worse test result (the one with the larger classification level number) between organic substrate 1 and inorganic substrate 1 was used as the adhesion test result.

[0069] <Water repellency test> In the water repellency test, tap water was sprayed onto the test specimen using a spray bottle, and the difference in water repellency from the blank (unpainted substrate 1) was visually judged. Then, the test specimens with water repellency superior to the blank were rated as ○, those with water repellency equivalent to the blank were rated as △, and those with water repellency inferior to the blank were rated as ×.

[0070] <Stain adhesion test> In the stain adhesion test, the test specimen was immersed in a mixture of oleic acid and carbon black, which simulates sebum stains, for 1 minute and then removed for 1 minute, 50 times, and finally the specimen was washed with water and visually checked for the presence or absence of remaining stains on the specimen. The specimens were then rated as follows: ○ for those with no remaining stains, △ for those with no visible stains but visible under magnified observation, and × for those with remaining stains.

[0071] <Slip resistance test> In the slip resistance test, the slipperiness of the test specimen's hand (fingers) was evaluated sensorily in comparison with a blank (unpainted substrate 1) to determine whether it was slippery or not when the surface of the test specimen was dry (Dry) and wet (Wet). Those that were less slippery than the blank were rated as ○, those that were equivalent to the blank were rated as △, and those that were more slippery than the blank were rated as ×. We also attempted to evaluate slip resistance using the coefficient of friction and coefficient of slip resistance, but the values ​​obtained using this test method did not clearly show the differences.

[0072] (Test Example 1) The coating agent of Test Example 1 is a two-component coating agent, which uses a T-unit silicone resin with an average degree of polymerization of about 30 and a D-unit silicone resin with an average degree of polymerization of about 40, and is composed of a base agent with a D / T content ratio of 50 / 50 and a curing agent mixed with a curing catalyst and a diluent. The surface of the coating layer 10 formed is made of a water-repellent R 1 Si and R 2 The coating layer 10 was coated with an alkylsilane of Si, and had water repellency and was also inhibited from attracting dirt. However, although the coating layer 10 had no problem with adhesion to the inorganic substrate 1, it contained an organic functional group (Y 1 , Y 2 ), the adhesion to the organic substrate 1 was somewhat poor. In addition, the coating layer 10 contained a somewhat large amount of T-unit silicone resin, so the slip resistance was somewhat poor in both the dry and wet states.

[0073] (Test Example 2) The coating agent of Test Example 2 is a two-component coating agent, which uses a T-unit silicone resin with an average degree of polymerization of about 90 and a D-unit silicone resin with an average degree of polymerization of about 70, and is composed of a base agent with a D / T content ratio of 50 / 50 and a curing agent mixed with a curing catalyst and a diluent. As in Test Example 1, Test Example 2 is a coating agent in which the surface of the coating layer 10 formed is R having water repellency. 1 Si and R 2 The coating layer 10 was coated with an alkylsilane of Si, and had water repellency and was also inhibited from attracting dirt. However, although the coating layer 10 had no problem with adhesion to the inorganic substrate 1, it contained an organic functional group (Y 1 , Y 2 ), the adhesion to the organic substrate 1 was somewhat poor. In addition, the coating layer 10 contained a somewhat large amount of T-unit silicone resin, so the slip resistance was somewhat poor in both the dry and wet states.

[0074] (Test Example 3) The coating agent of Test Example 3 is a two-component coating agent, which uses a DT unit silicone resin with an average degree of polymerization of about 80 and a D unit silicone resin with an average degree of polymerization of about 40, and is composed of a base agent with a D / T content ratio of 55 / 45 and a curing agent mixed with a curing catalyst and a diluent. Test Example 3 is a coating agent in which the surface of the formed coating layer 10 has water repellency. 1 Si and R 2 The coating layer 10 was coated with an alkylsilane of Si, and had water repellency and was also inhibited from attracting dirt. In addition, the coating layer 10 had excellent adhesion to both the organic and inorganic substrates 1, and also had excellent slip resistance. This is presumably due to the use of the DT unit silicone resin.

[0075] (Test Example 4) The coating agent of Test Example 4 is a two-component coating agent, which uses a T-unit silicone resin with an average degree of polymerization of about 30 and a D-unit silicone resin with an average degree of polymerization of about 40, and is composed of a base agent with a D / T content ratio of 71 / 29 and a curing agent mixed with a curing catalyst and a diluent. The surface of the coating layer 10 formed is made of a water-repellent R1 Si and R 2 The coating layer 10 was coated with an alkylsilane of Si, which provided water repellency and reduced adhesion of dirt. In addition, since it contained a large amount of D unit silicone resin, it also had excellent slip resistance. However, although the coating layer 10 had no problem with adhesion to the inorganic substrate 1, it had a problem with the organic functional group (Y 1 , Y 2 ), the adhesion to the organic substrate 1 was somewhat poor.

[0076] (Test Example 5) The coating agent of Test Example 5 is a two-component coating agent, which uses a T-unit silicone resin with an average degree of polymerization of about 30 and a D-unit silicone resin with an average degree of polymerization of about 40, and is composed of a base agent with a D / T content ratio of 79 / 21 and a curing agent mixed with a curing catalyst and a diluent. The surface of the coating layer 10 formed is made of water-repellent R 1 Si and R 2 The coating layer 10 is coated with an alkylsilane of Si, has water repellency, and contains a large amount of D unit silicone resin, so it has excellent slip resistance. However, although the coating layer 10 has no problem with adhesion to the inorganic substrate 1, it has an organic functional group (Y 1 , Y 2 ), the adhesion to the organic substrate 1 was somewhat poor. In addition, the coating layer 10 contained too much D unit silicone resin and was flexible, so in the dirt adhesion test, dirt was not visible to the naked eye, but was visible under magnified observation.

[0077] (Test Example 6) The coating agent of Test Example 6 is a two-component coating agent, which uses a T-unit silicone resin with an average degree of polymerization of about 90 and a D-unit silicone resin with an average degree of polymerization of about 70, and is composed of a base agent with a D / T content ratio of 40 / 60 and a curing agent mixed with a curing catalyst and a diluent. Test Example 6 is a coating agent in which the surface of the coating layer 10 formed has water repellency. 1 Si and R 2The coating layer 10 was coated with an alkylsilane of Si, and had water repellency and was also inhibited from attracting dirt. However, although the coating layer 10 had no problem with adhesion to the inorganic substrate 1, it contained an organic functional group (Y 1 , Y 2 ), the adhesion to the organic substrate 1 was somewhat poor. In addition, the coating layer 10 contained a large amount of T-unit silicone resin, so the slip resistance was poor in both the dry and wet states.

[0078] (Test Example 7) The coating agent of Test Example 7 is a two-component coating agent, which uses a T-unit silicone resin with an average degree of polymerization of about 30 and a D-unit silicone resin with an average degree of polymerization of about 40, and is composed of a base agent containing a T-unit alkoxysilane having an epoxy group in a silicone resin with a D / T content ratio of 60 / 40, and a curing agent mixed with a curing catalyst and a diluent. The surface of the coating layer 10 formed is made of a water-repellent R 1 Si and R 2 The coating layer 10 was coated with an alkylsilane of Si, and had water repellency and was also inhibited from attracting dirt. In addition, the coating layer 10 contained T-unit alkoxysilane, and thus had excellent adhesion to the substrate 1, and due to the D / T content ratio, it also had excellent slip resistance.

[0079] (Test Example 8) The coating agent of Test Example 8 is obtained by replacing the T-unit alkoxysilane having an epoxy group contained in the coating agent of Test Example 7 with a D-unit alkoxysilane having an epoxy group. In the test of Test Example 8 this time, no difference was observed with Test Example 7, and the adhesion, water repellency, dirt adhesion, and slip resistance were all good.

[0080] (Test Example 9) The coating agent of Test Example 9 is a coating agent in which the T unit alkoxysilane having an epoxy group contained in the coating agent of Test Example 7 is replaced with a mixture of T unit alkoxysilane having an epoxy group and D unit alkoxysilane having an epoxy group. In the test of Test Example 9 this time, no difference was observed from Test Example 7, and the adhesion, water repellency, dirt adhesion and slip resistance were all good.

[0081] (Test Example 10) The coating agent of Test Example 10 is a two-component coating agent, which uses a DT unit silicone resin with an average degree of polymerization of about 80 and a D unit silicone resin with an average degree of polymerization of about 70, and is composed of a base agent containing a T unit alkoxysilane having an amino group in a silicone resin with a D / T content ratio of 64 / 36, and a curing agent mixed with a curing catalyst and a diluent. The surface of the coating layer 10 formed is made of a water-repellent R 1 Si and R 2 It was coated with Si alkylsilane, which gave it water repellency and reduced adhesion of dirt. In addition, by containing T unit alkoxysilane, it had excellent adhesion to the substrate 1, and due to the D / T content ratio, it also had excellent slip resistance.

[0082] (Test Example 11) The coating agent of Test Example 11 is a coating agent in which the T-unit alkoxysilane having an amino group contained in the coating agent of Test Example 10 is replaced with a D-unit alkoxysilane having an amino group. In the test of Test Example 11 this time, no difference was observed from Test Example 10, and the adhesion, water repellency, dirt adhesion, and slip resistance were all good.

[0083] (Test Example 12) The coating agent of Test Example 12 is a coating agent in which the T unit alkoxysilane having an amino group contained in the coating agent of Test Example 10 is replaced with a mixture of T unit alkoxysilane having an amino group and D unit alkoxysilane having an amino group. In the test of Test Example 12 this time, no difference was observed with Test Example 10, and the adhesion, water repellency, dirt adhesion and slip resistance were all good.

[0084] (Test Example 13) The coating agent of Test Example 13 is a one-component coating agent, which is a silicone resin with a D / T content ratio of 60 / 40, using a T unit silicone resin with an average degree of polymerization of about 30 and a D unit silicone resin with an average degree of polymerization of about 70, mixed with a T unit alkoxysilane having an epoxy group and a D unit alkoxysilane having an epoxy group, and mixed with a curing catalyst and a diluent. In terms of composition, the D unit silicone resin with an average degree of polymerization of about 40 contained in the coating agent of Test Example 9 is replaced with a D unit silicone resin with an average degree of polymerization of about 70. In the test of Test Example 13 this time, no difference was observed from Test Example 9, and the adhesion, water repellency, dirt adhesion, and slip resistance were all good.

[0085] (Test Example 14) The coating agent of Test Example 14 is a one-component coating agent in which the D unit silicone resin with an average degree of polymerization of about 70 contained in the coating agent of Test Example 13 has been replaced with a D unit silicone resin with an average degree of polymerization of about 300. Test Example 14 was excellent in adhesion, water repellency, and slip resistance, but the average degree of polymerization of the linear polysiloxane 12 made of the D unit silicone resin was too high, and it was flexible, so in the dirt adhesion test, dirt was not visible to the naked eye, but was visible under magnified observation.

[0086] (Test Example 15) The coating agent of Test Example 15 is a one-component coating agent in which the D-unit silicone resin with an average degree of polymerization of about 70 contained in the coating agent of Test Example 13 is further changed to a D-unit silicone resin with an average degree of polymerization of about 500. Test Example 15 was excellent in adhesion, water repellency, and slip resistance, but the average degree of polymerization of the linear polysiloxane 12 consisting of the D-unit silicone resin was too high, and it was flexible, so in the dirt adhesion test, dirt was not visible to the naked eye, but was visible under magnified observation.

[0087] (Test Example 16) The coating agent of Test Example 16 is a commercially available coating agent containing a photocatalyst. The coating agent of Test Example 16 was excellent in adhesion, water repellency, and dirt adhesion, but the surface of the coating layer was formed in such a way that water droplets easily slipped on it, and both the dry and wet conditions had poor slip resistance.

[0088] According to the coating agent of the embodiment, the D unit silicone resin forming the linear polysiloxane 12 and the three-dimensionally cross-linked T unit silicone resin are contained. Since the coating layer 10 formed from the coating agent is formed from silicone resin, adhesion of dirt to the coating layer 10 can be suppressed. In addition, since the content of the D unit silicone resin in the coating agent is equal to or greater than the content of the T unit silicone resin, the coating layer 10 formed from the coating agent contains more linear polysiloxane 12 of the D unit silicone resin than the three-dimensionally cross-linked T unit silicone resin. The linear polysiloxane 12 of the D unit silicone resin is bonded to the silicone resin at both ends and is present in the coating layer 10 so as to be capable of stretching and deforming. Therefore, when stress is applied by contact with a foot or the like, the coating layer 10 (silicone resin) deforms to absorb the stress, and the linear polysiloxane 12 deforms to absorb the stress, providing a large resistance to contact. In other words, the coating agent according to the embodiment can provide the covering layer formed from the coating agent with antifouling properties and antislip properties.

[0089] Other technical ideas that can be understood from the coating agent of the embodiment configured as described above will be described below.

[0090] In the coating agent according to the embodiment, the organic functional groups (Y 1 , Y 2 ) may be an epoxy group, an amino group, an acryl group or a methacryl group.

[0091] This allows the adhesion to the base material 1 to be excellent.

[0092] The coating agent of the embodiment may be a combination of a mixture of the T unit silicone resin and the D unit silicone resin (DT unit silicone resin) and the D unit silicone resin that forms a linear polysiloxane 12.

[0093] According to this, the formed coating layer 10 can have linear polysiloxane 12 made of D unit silicone resin contained therein in a flexible hard coating formed by DT unit silicone resin so that it can expand and contract. As a result, when stress is applied due to contact with a foot or a sole, the coating layer 10 has flexible coating layer 10 (silicone resin) which deforms to absorb the stress, and linear polysiloxane 12 expands and contracts to absorb the stress, providing a large resistance to contact and exhibiting anti-slip properties.

[0094] In the coating agent of the embodiment, the bonding structural unit has the formula ((R 3 O)3SiY 1 ) (T unit alkoxysilane) may be contained.

[0095] This makes it possible to improve adhesion to floors, bathtubs, and the like, while suppressing excessive flexibility of the coating layer 10 and hardening the silicone resin (coating layer 10).

[0096] In the coating agent of the embodiment, the D unit silicone resin may be contained in an amount of 40 to 80 mass % calculated as non-volatile content.

[0097] This allows the covering layer to have appropriate flexibility, and when stress is applied due to contact with the foot or the like, the covering layer can deform to absorb the stress. [Explanation of symbols]

[0098] 1 Base material 10 Covering layer 12 Linear polysiloxane

Claims

1. A method for applying a coating agent to a part that comes into contact with a person's foot or shoe sole, comprising the steps of: The coating agent is The bonded structural unit has the formula (R 1 2 SiO 2 / 2 ) and a silicone resin (D unit silicone resin) represented by the formula (R 2 SiO 3 / 2 ) a silicone resin (T unit silicone resin) represented by the formula: the content of the D unit silicone resin is equal to or greater than the content of the T unit silicone resin; The D unit silicone resin forms a linear polysiloxane, The method for applying a coating agent is characterized in that the coating agent imparts antifouling and antislip properties to the area to be coated.

2. 2. The method for applying a coating agent according to claim 1, wherein the linear polysiloxane has an average degree of polymerization of 20 to 600.

3. The bonded structural unit has the formula (R 3 O) 3 SiY 1 ) and / or a bonded structural unit having the formula (R 4 O) 2 SiCH 3 Y 2 2. The method for applying the coating agent according to claim 1, characterized in that the coating agent contains an alkoxysilane represented by the formula:

4. 2. The method for applying a coating agent according to claim 1, wherein the part that comes into contact with a person's feet or shoe soles is a floor or a bathtub.

5. 2. The method for applying a coating agent according to claim 1, wherein the part that comes into contact with a person's feet or shoe soles is a deck or floor of a ship.

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