JPH0759685B2 - Tile floor material construction method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pressure-sensitive adhesive useful when a tile floor material such as a tile carpet is applied, and a method for applying a tile floor material using the same.

(Prior Art) Conventionally, regarding the construction of a tiled flooring material, if the tiled flooring material is laid down without any adhesive treatment, there is a problem that the tiled flooring material is displaced due to walking during use. Therefore, if you bond it with a too strong adhesive, when changing the fixing place during construction or removing the carpet during maintenance during use,
The backing material of the floor material and the floor base may be damaged, which is not preferable.

(Problems to be Solved by the Invention) An object of the present invention is to use a pressure-sensitive adhesive for tiled flooring, which has appropriate tackiness and can be easily peeled off even after the flooring is removed after construction. It is to provide a construction method for a tiled floor material.

(Means for Solving the Problems) In the present invention, 100 parts by weight of the polymer A having a particle size of 0.05 to 4 μ is combined with 10 to 100 parts of the polymer B having a particle size of 5 to 150 μ. And a glass transition point of the polymer B is lower than that of the polymer A, the water-based pressure-sensitive adhesive for tile floor material and the method for constructing a tile floor material using the same. Pertain.

In the present invention, the polymer A is composed of an adhesive composition such as a synthetic resin type, a natural rubber type, or a synthetic rubber type, or a mixture thereof, and the synthetic resin type is preferably a vinyl type homopolymer or copolymer, Polymers containing acrylic acid ester or methacrylic acid ester as a main component are preferable.
The required physical properties can be adjusted by the type and amount of the functional group-containing monomer used, but can be adjusted by adjusting the glass transition point. There is no problem in that method as long as the polymer A does not lose its tackiness. The average particle size of the polymer A is preferably 0.05 to 4 µ, and particularly preferably 0.05 to 1 µ considering the permeability to the adherend and the adhesion to the flooring material.

In the present invention, the polymer B is a fine sphere having an average particle size of 5 to 150 µ, and more preferably 20 to 60 µ. Specific examples of the polymer B include (a) 70 to 99.9% by weight of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms, and (b) 0.1 to 10% by weight of α, β-unsaturated carboxylic acid. % And (c) 0 to 29.9% by weight of a vinyl compound other than both components (a) and (b) described above, the adhesive polymer microspheres obtained by aqueous suspension polymerization. Can be mentioned. Examples of the (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms as the component (a) include n-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate,
There are n-pentyl (meth) acrylate, n-hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, lauryl (meth) acrylate, etc. Examples of the α, β-unsaturated carboxylic acid include acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid. Examples of the vinyl monomer as the component (c) include vinyl acetate, vinyl propionate, methyl (meth) acrylate, ethyl (meth) acrylate,
Examples include styrene, acrylonitrile, 2-hydroxyethyl (meth) acrylate, N, N-dimethylaminoethyl acrylate, acrylamide, diacetone acrylamide, N-methylol acrylamide, glycidyl (meth) acrylate, and aziridinyl ethyl (meth) acrylate. To be done. The adhesive polymer microspheres of the component B of the polymer can be easily produced by an ordinary aqueous suspension polymerization method. However, as the dispersant, an anionic surfactant and a nonionic surfactant can be used alone or in combination. May come. Furthermore, the use of protective colloids facilitates the production of fine spheres.
The particle size can be adjusted by adjusting the types and amounts of the surfactant and the protective colloid, but it can also be carried out by a polymerization reaction method. For example, a desired particle diameter can be obtained by devising a monomer dropping method, an emulsion dropping method or the like by a seed polymerization method or a multi-stage polymerization method. The elastic modulus of the adhesive polymer microspheres can be easily adjusted by using divinylbenzene, trimethylolpropane triacrylate or the like. There is also a method in which only the adhesive polymer microspheres are taken out of the aqueous suspension with a filter and dried at low temperature and then dissolved in an organic solvent and added. Polymer B
Is preferably 10 to 100 parts by weight with respect to 100 parts by weight of the nonvolatile content of the polymer A, but preferably 10 to 50 parts by weight is desirable for imparting adhesive strength and removability. The polymer microspheres are arranged on the surface of the adherend during drying, and play an important role in adjusting the adhesive force.

In the present invention, the polymer A has a glass transition point (Tg) of preferably -50 ° C or higher, while the polymer B has a Tg of preferably -50 ° C or lower, and the polymer B always has a Tg higher than that of the polymer A. Is low. It is essential that the B component in the present invention has a low Tg and high elasticity.

The combination of the polymer A and the polymer B of the present invention exhibits the intended function. More specifically, it is considered that the effect is exerted in the following process in the construction process. That is, the component A of the polymer has a small particle diameter of 0.05 to 4 μm, and therefore has excellent diffusion and permeability to the adherend. Therefore, when it is applied to the surface of concrete, it immediately diffuses and wets the surface to provide an adhesive effect. Furthermore, a substance mainly composed of water penetrates into the concrete. This effect contributes to the adhesion to concrete, which is dry and adherent, and when the floor material is pasted, the strength of the concrete surface side is higher and the floor material side is lower as the adhesive works. Become. Therefore, it is difficult to transfer the adhesive to the floor material when it is attempted to remove the adhered material, which helps the purpose of the present invention.

However, this alone cannot satisfy the removability function. Polymer B is required to further enhance this effect. Since the polymer B has a large particle size, it naturally has poor diffusion and penetration, and finally is arranged closely to the back surface of the tile. This phenomenon is the object of the present invention, the applied adhesive composition is large particles on the surface, and since it is rich in elasticity, it elastically deforms when pressed, but deforms when pressure is not applied. Without doing so, the contact area with the back surface of the floor material and the floor base is kept small. In the present invention, as a result of combining the polymer A and the polymer B, the removable pressure-sensitive adhesive ability is obtained, and the pressure-sensitive adhesive is extremely suitable for flooring.

The pressure-sensitive adhesive of the present invention has a polymer A as a so-called soft polymer due to the combination of polymers having large and small elasticity.
It adheres to the entire surface of the floor material to prevent peeling during use. on the other hand,
The polymer B, which is an elastic polymer, is elastically deformed at the time of pressurization, but is not deformed when pressure is not applied, and the contact area with the back surface of the floor material or the floor base is kept small.
In the present invention, as a result of combining the polymer A and the polymer B, the removable pressure-sensitive adhesive ability is obtained, and the pressure-sensitive adhesive is extremely suitable for flooring.

Further, in the present invention, an aqueous dispersion of a natural resin and / or a petroleum resin may be added as the polymer C, if desired, in order to impart more tackiness. Natural resins and petroleum resins include aliphatic hydrocarbon resins, aromatic petroleum resins, cyclopentadiene resins, polyterpene resins, modified terpenes, rosins, rosin esters, hydrogenated rosin esters,
Examples thereof include a phenol resin, a styrene resin and a xylene resin. Aqueous dispersions of natural resins and petroleum resins are necessary for adjusting the adhesive strength. Adhesive strength, dryability and anchorability to adherends cannot be achieved with adhesives consisting only of synthetic resins and rubbers. And imparts permeability. It is also possible to use up to about 50 parts by weight with respect to 100 parts by weight of the nonvolatile content of the polymer A. In addition to this, a solvent such as alcohol or toluene may be added.

In addition, the present invention has a particle size of 0.05 between the tile floor material and the floor substrate.
-4 μm of the polymer A and the polymer B having a particle size of 5 to 150 μm are combined, and a pressure-sensitive adhesive having a structure in which the glass transition point of the polymer B is lower than that of the polymer A is interposed. The present invention also relates to a method for constructing a tiled floor material.

The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of the embodiment of the present invention, in which 1 is a pile of tile carpet and 2 is a resin backing material. The adhesive 3 of the present invention is interposed between the resin backing material 2 and the floor base G. The adhesive 3 may be applied on the floor base G at the time of construction, or may be previously applied on the backing material surface of the tile carpet and provided. In the present invention, the adhesive material is constituted by a combination of the polymer 4 and the polymer 5. Polymer 4 is the polymer A
And 4'is the polymer A that has penetrated the entire surface of the floor substrate and contributes to the adhesion of the backing material 2. Polymer 5 is polymer B. Polymer 4 has a higher Tg than Polymer 5.

(Function) When the tile-like flooring material is adhesively applied using the pressure-sensitive adhesive having the above-described configuration, the polymer A has small particles and is soft, so that the contact area with the floor base G and the backing material 2 is large. On the other hand, the polymer B is usually spherical and rich in elasticity, and is deformed into a flat shape when a load is applied, and the contact area with the adherend is increased and the strength is improved. It has the property that it can be easily peeled off when a certain force or more is applied. With these characteristics, good results can be obtained in the cycle of prevention of deviation and adhesion / peeling, and it is very useful as a floor material. The flooring material used in the present invention is
It may be made of synthetic resin, ceramic, wood, etc., but tile carpets and other flexible tiled floor materials are preferable.

(Effects of the Invention) (1) When the adhesive for tile carpet of the present invention is used for construction of tile carpet, good adhesive strength and removability are obtained, and the tile carpet does not shift during walking. Also, in case of a sticking error during construction or maintenance during use, re-peeling construction can be easily performed.

(2) Even if the floor material is peeled off after the floor material is constructed using the adhesive of the present invention, the backing material of the floor material is not damaged.

(3) The adhesive does not stick to the lining material of the floor even after the floor is peeled off after the floor is constructed using the adhesive of the present invention.

(4) Since the floor material can be constructed without considering the open time of the adhesive, the construction efficiency is improved.

(Examples) Example 1 85 parts of butyl acrylate and 12 parts of vinyl acetate were placed in a three-necked flask equipped with a thermometer, a reflux condenser, and a stirrer with a transmission.
Parts, acrylic acid 3 parts, anionic surfactant 2.0 parts, nonionic surfactant 0.5 part, and inon-exchanged water 100 parts were charged and heated under a nitrogen stream while stirring, and the reaction system was at 50 ° C.
Ammonium persulfate as a polymerization initiator at the time of reaching 0.
Polymerization is started by adding 5 parts and the polymerization reaction is carried out at 80 ° C. for about 3 hours. After the completion of the polymerization, the temperature was raised to about 85 ° C. and the reaction was carried out for 1 hour to obtain an emulsion composition of a copolymer. While stirring this emulsion composition, a 25% aqueous ammonia solution was added dropwise to produce an acrylic copolymer emulsion having a viscosity of 8000 cp (30 ° C.) and a nonvolatile content of 51.5%. These emulsions are the differential scanning calorimeter DSC-200.
The glass transition point measured by [Seiko Denshi Kogyo Co., Ltd.] was -43 ° C. Further, it was 0.3 μm as measured by a submicron particle analyzer N4 type (Coulter Electronic Co., Ltd.). The obtained emulsion copolymer is referred to as polymer A.

Next, add 100 parts of water to the container prepared for the production of polymer B.
Parts, and 3 parts of a solution of 20% incompletely saponified polyvinyl alcohol which has been dissolved in advance are added and sufficiently stirred. Next 2-
45 parts of ethylhexyl acrylate, 5 parts of butyl acrylate, 1.0 part of acrylic acid and 0.5 part of benzoyl peroxide are dissolved by stirring in another container. The mixed liquid of the monomers is added to the previously prepared aqueous solution and stirred. The polymerization reaction starts at a stirring speed of 100 rpm and a reaction temperature of 70 to 75 ° C, and heat is rapidly generated up to 85 to 95 ° C. Then, the mixture is cooled to 81 to 82 ° C and reacted for 2 hours. An aqueous suspension with a uniform particle size is formed in the reaction vessel. Then, the next polymerization step is started. 2-in another container
Ethylhexyl acrylate 50 parts, anion activator 0.5
Parts, 1.5 parts acrylic acid, 0.5 parts benzoyl peroxide and 50 water
Mix well with stirring. Then, all of these are added dropwise over 30 minutes and the reaction is continued at 80 to 83 ° C for 4 hours. Then, it was cooled and taken out to produce an aqueous suspension pressure-sensitive adhesive. Viscosity 1500
cp (30 ° C), non-volatile content 40%, Tg-68 ° C. Also, the particle size was measured in a scanning electron microscope JSM [JEOL Ltd.] body equipped with a cryounit in a liquid nitrogen cooled state, and the average particle size was 50μ.

Next, the above-mentioned polymer A component, polymer B component, and aqueous dispersion of a glycerol esterified product of hydrogenated rosin as the C component (nonvolatile content 50%) were used as A: B: C = 100: 80: 20 (parts by weight). The mixture was mixed as above, an antifoaming agent, an antioxidant, and a preservative were added, and the mixture was stirred for 60 minutes to obtain a tile floor pressure-sensitive adhesive. The obtained pressure-sensitive adhesive for floor had a nonvolatile content of 46.7% and a viscosity of 3000 cps / 25 ° C.

The floor adhesive obtained above was applied to the concrete surface in an amount of 10
Coated with a comb for floor adhesives to 0 g / m ² and tiled carpets lined with polyvinyl chloride under the following conditions and peeled off after about 1 month and re-peeled The adhesiveness and the adhesion state of the adhesive to the back surface of the carpet tile were examined.

Example 2 A tile carpet was constructed in the same manner as in Example 1 by using the pressure-sensitive adhesive obtained by removing the component C from Example 1.

Example 3 Acrylic adhesive Cybinol AT-351-1 [manufactured by Saiden Chemical Co., Ltd., viscosity 8500 cp, nonvolatile content 50%, particle size 0.8
[mu], glass transition temperature-40 [deg.] C.] was used as the component A, and a floor adhesive was prepared using the same components as in Example 1, and tile carpets were similarly applied.

Example 4 A pressure-sensitive adhesive for floors was prepared by removing the C component from Example 3, and a tile carpet was applied in the same manner.

Comparative Example 1 A floor pressure-sensitive adhesive excluding the component B of Example 1 was prepared and a tile carpet was applied.

Comparative Example 2 20 parts of an aqueous dispersion of a glycerol ester of hydrogenated rosin of component C was added to 100 parts of SBR type latex (nonvolatile content 69%), and a plasticizer, a surfactant, an antifoaming agent and an antioxidant were added. Then, the floor adhesive was prepared and the tile carpet was installed. The results are shown in Table 1.

Examples 1 to 4 have a sufficient initial tack, the re-viscosity after peeling off the tile carpet is good regardless of the open time, and there is no migration of the adhesive to the tile carpet backing material. The removability as an adhesive was excellent.

On the other hand, in Comparative Example 1, the initial tack disappeared at e and transfer of the adhesive to the backing material, and in Comparative Example 2, the initial tack disappeared at d and e and there was no re-adhesiveness, and the adhesive backed to the backing material. However, none of them was suitable as a removable pressure-sensitive adhesive.

[Brief description of drawings]

FIG. 1 is a sectional view showing an implementation state of the construction method of the present invention.

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kazumasa Ozaki 7-14-2 Tsuji, Urawa-shi, Saitama Saiden Chemical Co., Ltd. (72) Akio Tanimoto 7-14-2 Tsuji, Urawa-shi, Saitama Saiden Kagaku Co., Ltd. (72) Inventor, Osamu Yoshikawa 5-125, Higashiarioka, Itami City, Hyogo Prefecture Toyo Reno Liuum Co., Ltd. (56) References JP 63-97672 (JP, A) JP 61-281173 (JP, A)

Claims (2)

[Claims] 1. A particle size of 0.05 between the tile floor material and the floor substrate.
The particle size is 5 to 150 with respect to 100 parts by weight of the polymer A of 4 μm.
A tile shape characterized by interposing 10 to 100 parts by weight of the polymer B of μ and interposing an aqueous pressure-sensitive adhesive having a constitution in which the glass transition point of the polymer B is lower than the glass transition point of the polymer A. Floor material construction method. 2. 100 parts by weight of the polymer A having a particle size of 0.05 to 4 .mu.m and 10 to 1 of the polymer B having a particle size of 5 to 150 .mu.m.
A water-based pressure-sensitive adhesive for tile-like flooring, characterized in that 00 parts by weight are combined and the glass transition point of polymer B is lower than that of polymer A.