JP2002188273A - Protection method for floor members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide protection method for floor members having good physical properties of the surface and simple workability. SOLUTION: A resin component hardened by ultra-violet ray is laminated by transparent film and a covering member hardened by ultra-violet ray for floor is adhered to any desired position of the floor member, then ultra-violet ray is radiated from a place above the film for hardening purpose and it is united with the floor members to one body in this protection method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for protecting flooring.

[0002]

2. Description of the Related Art Existing flooring materials are generally coated with a covering material in order to prevent dirt, protect a base material, and maintain aesthetic appearance.

[0003] As such a coating material, a solvent type in which a synthetic resin is dissolved in a solvent is generally used. However, an emulsion type in which the synthetic resin is dispersed in water is preferred due to the danger to the working environment and fire. (Japanese Patent No. 2597238), an ultraviolet-curable type using an ultraviolet-curable paint (JP-A-6-279566, Japanese Patent No. 2549288) and the like have been developed.

[0004]

However, in such a conventional floor covering material, the emulsion type has a problem that it takes one week or more from application to complete curing, and the ultraviolet curing type has a problem. There is a problem that the surface properties are hardly sufficiently exhibited due to the inhibition of curing by oxygen.

In order to eliminate the inhibition of curing by oxygen, a cationic photopolymerization system has been proposed (JP-A-9-137).
No. 079), there is a problem that the curing speed is lower than that of radical polymerization.

[0006] Further, in any type, it is common to apply by a roll, brushing or the like, and it is also a great problem that in order to obtain smoothness usable as a floor material in on-site coating, skill is required. It has become one of.

[0007] Further, for the purpose of simplifying repair and design change, a material capable of removing a coating material is desired, and a coating material having good removability has been developed. (Patent No. 254928
No. 8) The present invention has been made in view of such a point,
An object of the present invention is to provide a method for protecting a flooring material, which has good workability and can provide a protective film having sufficient surface physical properties and smoothness.

[0008]

According to the method for protecting a floor material of the present invention, an ultraviolet-curable coating material for a floor, in which an ultraviolet-curable resin composition is laminated with an ultraviolet-transmitting film, is attached to the floor material. It is characterized in that the film is irradiated with ultraviolet rays from above and cured to be integrated with the floor material.

According to this protection method, since an ultraviolet-curable coating material obtained by laminating an ultraviolet-curable resin composition and an ultraviolet-transmitting film is used as the coating material,
Workability is good. In addition, since the film is cured with the film attached to the surface, it is possible to form a protective film having sufficient surface properties by suppressing the curing inhibition by oxygen and having excellent smoothness.

In the method for protecting a flooring material of the present invention, the ultraviolet-curable resin composition preferably comprises the following (A) to (D).

(A) 10 to 90 parts by weight of an ultraviolet curable monomer (B) 10 to 90 parts by weight of a vinyl polymer (C) a photopolymerization initiator with respect to 100 parts by weight in total of the components (A) and (B) 1 to 10 parts by weight (D) wax 0 to 20 parts by weight By using the ultraviolet-curable resin composition containing the vinyl polymer (B) as described above, the adhesion when the coating material is repeatedly applied becomes good, Repair becomes possible.

Further, as the vinyl polymer (B), a vinyl polymer having an anionic dissociating group may be used, in which case the coating material can be provided with removability,
Repair of the covering material and design change are simplified.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The matters relating to the implementation of the present invention will be described below in detail.

The ultraviolet ray-curable coating material for floors in the present invention is obtained by laminating an ultraviolet ray-curable resin composition with an ultraviolet ray transmitting film.

The UV-curable resin composition is not particularly limited as long as it contains a UV-curable monomer and a photopolymerization initiator and can be cured by ultraviolet rays. (A), a vinyl polymer (B), a photopolymerization initiator (C), and a wax (D).

As the UV-curable monomer (A), known and commonly used ones can be used. Typical examples thereof include 2-ethylhexyl acrylate, styrene,
Methyl methacrylate, tetrahydrofurfuryl (meth) acrylate, phenoxyethyl (meth) acrylate, isobornyl (meth) acrylate, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol Di (meth) acrylate, 1,4 butanediol di (meth) acrylate, 1,6 hexanediol di (meth)
Acrylate, EO-modified bisphenol di (meth) acrylate, PO-modified bisphenol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, EO-modified trimethylolpropane tri (meth) acrylate, PO-modified trimethylolpropane tri (meth) acrylate , Pentaerythritol tri (meta)
Acrylate, tris ((meth) acryloxyethyl)
Examples include isocyanurate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, and the like. These may be used alone or in combination of two or more.

As the vinyl polymer (B), known ones can be used. Polymers using not only typical vinyl compounds but also various ethylene-substituted monomers such as vinylidene compounds and vinylene compounds as monomers. -Copolymers can be used. Representative examples of the monomer include styrene, ethyl acrylate, butyl acrylate, methyl methacrylate, and 2-ethylhexyl acrylate. These may be used alone or in combination of two or more.

In order to impart removability to the coating material, a vinyl polymer (B) having an anionic dissociating group may be used. Examples of such an anionic dissociating group include a carboxyl group and a sulfo group. Specifically, (meth) acrylic acid, crotonic acid,
Polymerizable unsaturated group-containing carboxylic acids such as cinnamic acid, maleic acid (or its monoalkyl ester) and fumaric acid (or its monoalkyl ester), or polymerizable unsaturated groups such as vinylsulfonic acid and 2-sulfoethylacrylamide. A vinyl polymer polymerized using a group-containing sulfonic acid is exemplified. These monomers may be used alone or in combination of two or more. In addition, together with these monomers, a monomer having no anionic dissociation group may be used as a copolymer component, such a copolymer component,
Known materials can be used, and examples thereof include styrene, ethyl acrylate, butyl acrylate, methyl methacrylate, and 2-ethylhexyl acrylate.

The vinyl polymer can be synthesized by a known method, and typical examples include solution polymerization, emulsion polymerization, suspension polymerization and the like.

Known photopolymerization initiators (C) can be used, and typical examples thereof include 1-hydroxycyclohexylphenyl ketone and 2-hydroxy-2-methyl-1-phenylpropan-1-one. Benzyldimethyl ketal, benzoin isopropyl ether, benzophenone and the like. These can be used alone,
A plurality of types may be used in combination.

Known waxes can also be used as the wax (D), such as natural and synthetic hydrocarbon waxes, modified products thereof, oxides, mineral oils and vegetable oil waxes and modified products thereof. Is mentioned. Here, the wax (D) desirably has a melting point of 40 ° C. or higher.
When the melting point is less than 40 ° C., the cured film becomes sticky at a high temperature, and it is difficult to exhibit a sufficient function as a floor covering material.

The mixing ratio of these components is as follows:
Component (B) is 90 to 10 parts by weight based on 0 to 90 parts by weight. When the amount of the component (B) is less than 10 parts by weight, the effect of the component (B) of enhancing the adhesion and the removability is hardly exhibited,
If the amount exceeds 90 parts by weight, the ultraviolet curability of the composition may be insufficient. Preferably, component (A) is 3
Component (B) is 70 to 30 parts by weight in 0 to 70 parts by weight.

The proportion of the component (C) is 1 to 10 parts by weight, preferably 2 to 5 parts by weight, per 100 parts by weight of the total of the components (A) and (B).

The mixing ratio of the component (D) is 0 to 20 parts by weight based on 100 parts by weight of the total of the components (A) and (B). The component (D) is not essential, but by adding it, the gloss of the surface and the detergent resistance are further improved. The mixing ratio of the component (D) is preferably 0 to 10 parts by weight.

The UV-curable resin composition contains:
If necessary, additives such as a slip agent, a surfactant and a plasticizer may be added in addition to the above components.

When the component (B) contains an anionic dissociative group-containing vinyl polymer, the ultraviolet curable resin composition preferably has an acid value of 30 to 200 mgKOH / g. If it is less than 30 mgKOH / g, the removability is poor, and
If it is larger than 0 mgKOH / g, the water resistance will be poor.

The ultraviolet-curable floor covering material of the present invention is obtained by laminating the above-mentioned ultraviolet-curable resin composition and an ultraviolet-permeable film. That is, the coating material is formed as a laminate composed of at least two layers of a layer made of the ultraviolet-curable resin composition and a layer of the ultraviolet-permeable film by laminating the ultraviolet-curable resin composition on the ultraviolet-transparent film. Have been.

Any film can be used as long as it transmits ultraviolet light, and examples of the film used for lamination include transparent films of polyethylene, polyethylene terephthalate, polyimide and the like.

As a method of laminating, one side of the film is coated with the above composition so as to have a predetermined thickness, or alternatively, the above composition is coated so as to have a predetermined thickness between two films. Or a method of sandwiching them. When sandwiched between two films, both may be ultraviolet-transmitting films, but if one is an ultraviolet-transmitting film, the other may be a film that does not transmit ultraviolet light, such as release paper.

In order to form a protective film on a flooring material using the ultraviolet curing type coating material for floors constructed as described above, the coating material is attached to a desired position on the surface of the flooring material, and the ultraviolet light transmitting film is kept attached. The resin composition may be cured by irradiating the resin composition with ultraviolet rays in this state, thereby integrating the resin composition with the floor material, and then removing the film on the surface.

More specifically, when two films are laminated, one film is peeled off and attached to a floor material, and when one film is laminated, the film is directly adhered to the floor material and the film (ultraviolet rays) UV light is irradiated from above the transmission film) with an ultraviolet irradiation device such as a high-pressure mercury lamp to cure the film. As described above, since the film can be cured with the film attached, the film (protective film) formed on the base material surface can be provided with smoothness, and the curing of the ultraviolet-curable resin is prevented from being inhibited by oxygen. be able to.

The floor material in the present invention is not particularly limited, but typical examples thereof include synthetic resins such as vinyl chloride resin, polyester resin, polyurethane resin, epoxy resin, acrylic resin, polyolefin resin, and the like.
Examples include natural materials such as wood and stone.

[0033]

EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples. In the following, “parts” and “%” are all based on weight unless otherwise specified.

The UV curable resin compositions of Formulations 1 to 6 were prepared according to the formulations shown in Table 1 below.

[0035]

[Table 1]

For Examples 1 to 5 and Comparative Example 1,
Using the compositions of the respective formulations shown in Table 2 below, a coating material for a laminated product was prepared by sandwiching two transparent polyethylene films so as to have a thickness of 30 μm. And
One film of the laminated coating material is attached to a PVC flooring material while peeling it off, and cured using an 80 W / cm high-pressure mercury lamp under the condition of an integrated illuminance of 350 mJ / cm ² , and after curing, the surface film is cured. Was peeled off and subjected to the following test.

As Comparative Example 2, a solvent-based coating material obtained by dissolving Formulation 2 in ethyl acetate was applied to a thickness of 50 μm on a PVC flooring material, and dried at 80 ° C. for 30 minutes. Then, after curing with a high-pressure mercury lamp, the same test was performed. Further, as Comparative Example 3, a commercially available urethane floor polish, POLYSUILON COAT C
Using a gland (manufactured by Yushiro Chemical Co., Ltd.), this was applied three times on a PVC flooring material, left for 24 hours or more, and subjected to the same test.

The test items and conditions for the obtained film are as follows.

Surface condition: The surface condition of the cured film was evaluated visually and by finger touch.

Gloss: Gloss (%) was measured with a specular gloss meter according to JIS K 3920-14.

Water resistance: The whitening state of the surface was visually evaluated according to JIS K 3920-17. ○ indicates that no change was observed.

Removability: 3 cured films in 5% KOH aqueous solution
After immersion for 0 minutes, the film was sufficiently rinsed with running water, and the state of the film was visually evaluated. ○ indicates good removability, and X indicates poor removability.

Adhesion: The same coating material as the coating was laminated on each of the obtained coatings in the same manner.
Regarding the film after lamination, JIS K 5400-8.5
The measurement was carried out according to the (cross-cut tape method), and the evaluation was made based on the number of remaining pieces out of 100 pieces (1 mm intervals).

Detergent resistance: The glossiness before and after washing was measured according to JIS K 3920-18, and the gloss retention was evaluated.

Heel mark resistance: JIS K 3920-
According to No. 15, the degree of adhesion of the heel mark was visually evaluated.ほ と ん ど indicates that there was little adhesion, and X indicates that adhesion was significant.

[0046]

[Table 2] The results are as shown in Table 2.

According to Examples 1 to 5, the comparative example 3 of the emulsion type cures in a shorter time than the curing time of 24 hours or more is required, and the glossiness which is one of the characteristics of the ultraviolet curable resin. Was high. In addition, since the film was cured with the film attached, the film surface was excellent in smoothness as compared with Comparative Example 2, and showed good surface properties without being inhibited from curing by oxygen.

Further, since the composition contains a vinyl polymer, the adhesion at the time of recoating is good, and the composition contains a vinyl polymer containing an anionic dissociating group.
In Nos. To 3, the removability was excellent.

[0049]

As described above, the method for protecting flooring according to the present invention is a simple and efficient method without impairing the working environment, so that the efficiency of the covering operation can be improved. Further, the obtained film has excellent surface properties such as gloss, water resistance, and washing resistance.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04F 15/10 104 E04F 15/10 104A (72) Inventor Tomohisa Saito 1580 Tabata, Samukawa-cho, Koza-gun, Kanagawa Prefecture Yushiro Chemical Industry Co., Ltd. (72) Inventor Koichi Sakusako 2-5-10-711 Motomiya, Otsu City, Shiga Prefecture (72) Inventor Teruaki Sugawara 910-60 Ishidacho, Moriyama City, Shiga Prefecture F-term (reference) 4J011 AA05 PA56 PA63 PA69 PA70 PB40 QA03 QA09 QA12 QA13 QA23 QA24 QA25 QA33 QA37 QB16 RA03 RA04 RA10 RA11 SA01 SA21 SA31 SA51 UA01 WA02

Claims (5)

[Claims] An ultraviolet-curable coating material for a floor, which is formed by laminating an ultraviolet-curable resin composition with an ultraviolet-transmissive film, is adhered to a floor material, and cured by irradiating ultraviolet rays from above the film. A method for protecting flooring, characterized by being integrated with the flooring. 2. The method according to claim 1, wherein the ultraviolet curable resin composition comprises the following (A) to (D). (A) 10 to 90 parts by weight of an ultraviolet curable monomer (B) 10 to 90 parts by weight of a vinyl polymer (C) Photopolymerization initiator 1 to 10 based on a total of 100 parts by weight of the components (A) and (B) Parts by weight (D) wax 0 to 20 parts by weight 3. The method according to claim 2, wherein the component (B) is a vinyl polymer having an anionic dissociating group. 4. An ultraviolet curable resin composition having an acid value of 30.
4. The composition according to claim 3, wherein the amount is from 200 mgKOH / g.
The method of protecting the flooring described. 5. The method according to claim 3, wherein the component (B) is a vinyl polymer having a carboxyl group or a sulfo group.