JP5130723B2 - Urethane cement-based composition, flooring and its construction method - Google Patents

Description

  The present invention is a urethane cement-based composition suitable for industrial floors such as food factories, chemical factories, machine factories, etc., which is excellent in color uniformity without color unevenness and excellent in compressive strength and blistering resistance. It relates to things and flooring and its construction method.

  As a conventional coating floor material and paving material, materials such as urethane resin, epoxy resin, and methyl methacrylate (MMA) have been used. However, these products are not always sufficient in heat resistance, acid resistance, alkali resistance and the like for industrial floors such as food factories and chemical factories. In addition, some of the above flooring materials include a material containing a large amount of solvent and a material that emits strong odor, and these materials are not environmentally preferable.

  Therefore, a polyurethane-based cement composition composed of hydraulic cement, aggregate, water, polyol, and a compound having two or more isocyanate groups has been proposed. (See Patent Document 1) This polyurethane-based cement composition mixes the above-mentioned components in the field, thereby hydrating the water and cement, urethanizing the polyol and isocyanate, and generating carbon dioxide gas from the isocyanate and water. The accompanying ureation reaction proceeds simultaneously. When this composition is cured, it is hard and excellent in wear resistance, and in addition, has heat resistance and chemical resistance. Therefore, it can be used as a floor material excellent in durability on industrial floors such as factory floors.

Also, a dispersion (A) containing (a) an active hydrogen compound having a nitrogen atom, (b) an active hydrogen compound having no nitrogen atom, (c) water, (d) a wetting dispersant and (e) an inorganic acid And a urethane-based cement composition comprising a compound (B) having two or more isocyanate groups in the molecule and a hydraulic cement (c). (See Patent Document 2)

The above urethane-based cement composition is used in a colored manner, and the coloring method is to prepare a pre-prepared powder by adding the pigment powder in a powder form into an aggregate such as cement or cement sand. However, there is a drawback that color unevenness occurs and the color uniformity is inferior. In the current situation where the color is changed for each process section on the factory floor in recent years, it is a big problem that the color uniformity is inferior when dealing with fine color changes.
JP-A-8-169744 JP 2006-206354 A

An object of the present invention is to provide a urethane cement-based composition that maintains the above characteristics of the urethane cement-based composition, has excellent color uniformity without color unevenness, and can easily meet various color requirements. It is intended to be used mainly as a coating floor material or a ground treatment material for a coating floor material. Another object of the present invention is to provide a method for constructing a coating floor material or a ground treatment material for a coating floor material.

  As a result of earnest research, the inventors of the present application have obtained a urethane cement-based composition using a specific dispersion medium and dispersant, that is, are compatible with the organic compound (b2) containing active hydrogen. Alternatively, by using a pigment dispersion composition using a dispersion medium or a dispersant having dispersibility, the present invention having excellent color uniformity has been completed.

That is, the present invention relates to an organic polyisocyanate compound (A); an active hydrogen composition (B) comprising water (b1) and an organic compound (b2) containing active hydrogen; a urethane cement system comprising cement (C). In the composition: (I) A pigment dispersion composition in which a pigment is dispersed using one or more oily dispersion medium (d2) selected from the group consisting of diisononyl adipate, di-2-ethylhexyl phthalate, polyalkylene oxide and polyester polyol ( D2)
The amount of the water (b1) is 1 to 40% by weight with respect to the active hydrogen composition (B), and 1 to 10% by weight with respect to the entire urethane cement-based composition,
The amount of the cement (C) used is 5 to 30% by weight with respect to the entire urethane-based composition,
The amount of the pigment dispersion composition (D1) and / or pigment dispersion composition (D2) used is 0.1 to 10% by weight in the urethane cement-based composition,
Provided is a colored urethane cement-based composition, wherein the pigment content in the pigment dispersion composition is 5 to 80% by weight, a flooring using the same, and a floor construction method using the same.

INDUSTRIAL APPLICABILITY The present invention can provide a urethane cement-based composition that is excellent in color uniformity without color unevenness and can easily meet various color requirements, a coating floor material composed of this composition, and a method for applying the same.

The present invention is further described below.
The organic polyisocyanate compound (A) used in the present invention is prepared by reacting an organic polyisocyanate alone or an organic polyisocyanate compound and a polyol in an ordinary manner under an excess of the organic polyisocyanate compound. .

  Examples of the organic polyisocyanate compound (A) include 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, diphenylmethane diisocyanate, partially carbodiimidized diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, and tolylene diisocyanate. Aliphatics such as aromatic diisocyanates such as naphthalene diisocyanate, phenylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, hydrogenated diphenylmethane diisocyanate, cyclohexane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, norbornene diisocyanate Diisocyanate Over DOO, alicyclic diisocyanates such as xylylene diisocyanate, polymeric MDI, biuret of hexamethylene diisocyanate, trifunctional or more isocyanate such as trimers and the like, can be used those of one or more thereof.

Examples of the polyol include polyether polyol, polyester polyol, and polydiene polyol.
The polyether polyol is a polyol obtained by subjecting ethylene oxide, propylene oxide, butylene oxide or the like to ethylene glycol, propylene glycol, water, glycerin, trimethylolpropane, pentaerythritol or the like alone or by addition polymerization of two or more kinds.

Examples of the polyester polyol include compounds obtained by reacting a dicarboxylic acid and a dihydric alcohol by a known method. Suitable dicarboxylic acids include succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid and terephthalic acid, and mixtures of these acids. Examples of dihydric alcohols include ethylene glycol, propylene glycol, butanediol, hexanediol and 2,2-diethyltrimethylene glycol.

Examples of the polydiene polyol include polyisoprene polyol, polybutadiene polyol, polychloroprene polyol, and polyols hydrogenated thereto.
The polyol preferably has a number average molecular weight of 300 to 5,000.

When the organic polyisocyanate and the polyol are reacted, they are prepared by a conventional method under an excess of the organic polyisocyanate, and the reaction ratio of the organic polyisocyanate and the polyol is NCO / OH ratio. It is preferably 1.5 or more, more preferably 3.0 or more and 6 or less.

The active hydrogen composition (B) contains water (b1) and an organic compound (b2) containing active hydrogen as essential components. The active hydrogen-containing compound (b2) is preferably a compound having at least two active hydrogen-containing groups, such as low molecular weight polyols, polyether polyols, polyester polyols, polydiene polyols, natural fats and oils and derivatives thereof, cellulose Derivatives, active hydrogen-containing compounds having a nitrogen atom and the like.

Low molecular weight polyols include ethylene glycol, 1,4-, 1,3- and 2,3-butanediol, diethylene glycol, dipropylene glycol, pentamethylene glycol, hexamethylene glycol, neopentylene glycol, propylene glycol, glycerin, Examples include hexanetriol, trimethylolpropane, and pentaerythritol.

Examples of the polyether polyol include a compound obtained by ring-opening polymerization addition of a cyclic ether in the presence of a catalyst using the low molecular weight polyol as an initiator. Examples of the cyclic ether include alkylene oxide such as ethylene oxide, epichlorohydrin, propylene oxide, 1,2-butylene oxide, and 2,3-butylene oxide, trimethylene oxide, and tetrahydrofuran.

Examples of the polyester polyol include compounds obtained by reacting a dicarboxylic acid and a dihydric alcohol by a known method. Examples of the dicarboxylic acid include succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid and terephthalic acid, and a mixture of these acids. Examples of the dihydric alcohol include ethylene glycol, propylene glycol, butanediol, hexanediol, and 2,2-diethyltrimethylene glycol.

Examples of the polydiene polyol include polyisoprene polyol, polybutadiene polyol, polychloroprene polyol, and polyols hydrogenated thereto.

Examples of cellulose derivatives include alkyls, hydroxyalkyls, carboxyalkyls and alkyls of celluloses such as methylcellulose, ethylcellulose, hydroxyethylcellulose, sodium carboxymethylcellulose, methylhydroxypropylcellulose, ethylhydroxypropylcellulose, methylhydroxyethylcellulose, and methylcarboxymethylcellulosesodium. And hydroxyalkyl ethers. Water-soluble isocyanate-reactive polymers, polyvinyl alcohol, polyoxyethylene glycol, and the like can also be used.

Active hydrogen-containing compounds having a nitrogen atom include amino alcohols such as monoethanolamine and alkylene oxide reactants thereof; ethylenediamine, hexamethylenediamine, triethyltetramine, m- and p-phenylenediamine, and 2,4- and 2 Polyamines such as 1,6-diaminotoluene and its alkylene oxide reactants; with formaldehyde and melamine, urea, amides, carbamates, urones, ureins, ureides, imidazolidinones, pyridinones and triazinones And the lower alkyl ethers of such condensation products, such as methylated polymethylol melamine / urea, dimethylol and diethylol ethylene urea, dihydroxy dimethylol and diethylol urea resin condensates. It is.

Examples of the natural fat and oil and derivatives thereof include castor oil and hydrogenated castor oil.

In the active hydrogen composition (B), it is preferable to use a surfactant used as a cement water reducing agent and a wetting and dispersing agent in order to allow water (b1) to exist uniformly.

Moreover, it is preferable to use a well-known and usual solvent, a diluent, and a plasticizer together with active hydrogen composition (B) by request | requirement of workability | operativity.

The amount of water (b1) is preferably 1 to 40% by weight based on the active hydrogen composition (B), and preferably 1 to 10% by weight based on the entire urethane cement-based composition. This water (b1) reacts with the organic polyisocyanate and exerts an effect on cement hydration. If the content of water (b1) is less than 1% by weight, the hydration reaction of the cement tends to be insufficient, which is not preferable. There is a tendency to become insufficient.

Known cements are used as the cement (C). Among these, Portland cement is preferable. Examples of Portland cement include ordinary Portland cement, early-strength Portland cement, and white Portland cement, which is a cement having a low iron and carbon content.

As a usage-amount of cement (C), 5 to 30 weight% is preferable with respect to the whole urethane cement-type composition. If it is less than 5% by weight, foaming tends to occur, and if it exceeds 30% by weight, workability is lowered, which is not preferable.

  As the pigment (d), a known pigment can be used, and is not particularly limited. Examples thereof include azo pigments, condensed azo pigments, diketopyrrolopyrrole pigments, benzimidazolone pigments, and phthalocyanine pigments. Indigo pigments, thioindigo pigments, perinone pigments, perylene pigments, dioxazine pigments, quinacridone pigments, isoindolinone pigments, naphthol pigments, pyrazolone pigments, anthraquinone pigments, flavanthrone pigments, Organic pigments such as indanthrene pigments, anthrapyrimidine pigments, pyranthrone pigments, metal complex pigments; yellow lead, yellow iron oxide, chromium oxide, molybdate orange, bengara, titanium yellow, zinc white, carbon black , Titanium oxide, cobalt green, ultramarine, cobalt blue, cobalt bar Mole pigment (titanium dioxide coated mica, colored mica, metal-plated mica); aluminum powder; graphite pigment, alumina flake pigment, metal titanium flake, stainless steel flake, plate-like iron oxide, metal-plated glass flake And other colored and colored flat pigments; extender pigments such as calcium carbonate, barium sulfate, barium carbonate, magnesium silicate, clay, talc, silica, and calcined kaolin. The particle size of the pigment is usually about 0.01 μm to 100 μm, preferably 0.1 to 10 μm.

The amount of the pigment dispersion composition (D1) and / or the pigment dispersion composition (D2) used is preferably 0.1 to 10% in the urethane cement-based composition.

The pigment content in the pigment dispersion composition is preferably 5 to 80% by weight. If it is less than 5%, the precipitation of the pigment tends to occur, and if it exceeds 80%, it becomes difficult to handle. More preferably, it is 40 to 70% by weight.

In the case of organic pigments, the pigment (d) is preferably an inorganic pigment because it has a tendency to discolor due to the basicity caused by the cement (C).

The pigment dispersion composition is roughly classified into an oily pigment dispersion composition (D2) using an organic compound as a dispersion medium and an aqueous pigment dispersion composition (D1) in which a pigment is dispersed in water using a dispersant. It can obtain by the method using well-known dispersers, such as.

The pigment dispersion composition (D1) of the present invention is an aqueous pigment dispersion composition in which a pigment (d) is dispersed in water, which is a dispersion medium (d2), using a dispersant (d1), and the dispersant (d1) nonionic polyoxyethylene alkyl ethers are preferably used nonionic surfactants such as polyoxyethylene alkylaryl chromatography ethers. With the dispersant (d1), it is possible to disperse one or more of the aforementioned various pigments in water. The dispersant (d1) uses a nonionic surfactant from the viewpoint of compatibility with the organic compound (b2) having active hydrogen. The dispersant content in (D1) is preferably 1 to 20% by weight, and the water content is preferably 20 to 95% by weight.

The pigment dispersion composition (D2) is an oily pigment dispersion composition using an organic compound as a dispersion medium (d2). The dispersion medium (d2) which is an organic compound is oily, and is diisononyl adipate or di-2 phthalate. -One or more kinds selected from plasticizers such as ethylhexyl and polyalkylene oxides such as polypropylene glycol; oligomers such as polyester polyols having fluidity at room temperature can be preferably used, and the above-mentioned various pigments can be used alone or as a dispersion medium. It is obtained by dispersion. The dispersion medium (d2) uses at least one selected from a plasticizer, a polyalkylene oxide, and a polyester polyol from the viewpoint of compatibility with the organic compound (b2) having active hydrogen. The amount of the dispersion medium (d2) is preferably 20 to 80% by weight.

The quantitative ratio of the polyisocyanate (A) of the present invention, the active hydrogen-containing composition (B), the cement (C), and the pigment dispersion composition (D) is not particularly limited. ), The composition (B), the cement (C) and the pigment dispersion composition (D) containing active hydrogen with respect to (B) 30 to 500% by weight, (C) 10 to 800% by weight, (D ) It is preferable to mix in the range of 0.2 to 40% by weight.

The urethane cement-based composition of the present invention can further contain an aggregate. Aggregates include sand and low clay content gravel, crushed glass siliceous aggregates, lightweight aggregates of plastics and rubber, plastic wastes, vermiculite and the like.

These aggregates are particularly preferably used by mixing with cement (C). The aggregate preferably has an average particle size of 0.07 mm to 4 cm. These materials may be in the natural state or may be artificially colored, for example by using dyes, pigments or coatings. The aggregate is preferably used in an amount of 5 to 80% by weight based on the entire urethane cement-based composition in terms of workability.

  Furthermore, the urethane cement-based composition of the present invention may contain other fillers, reaction modifiers, antifoaming agents, plasticizers and the like.

  As fillers, for example, inorganic powders such as calcium carbonate, talc, barium sulfate, glass fibers, cotton, wool, polyethylene fibers, polyamide fibers, polyester fibers, short fibers of natural origin or artificial origin Materials can also be used. By adding talc or short fiber material, the cement composition can be far modified, and the material that can be applied to the ramp and the standing surface can be adjusted. The short fiber is preferably 0.001 to 1 mm.

  Examples of the reaction regulator include chain terminators such as monohydric alcohols and epoxy group-containing compounds. Terpineol, pure or mixed with a hydrocarbon such as pine oil, can also be used.

Examples of the antifoaming agent include known polyols such as poly (siloxane), poly (alkylsiloxane) and poly (dialkylsiloxane), and polyethylene oligomer.

  Specific examples of the plasticizer include known plasticizers such as dibutyl phthalate, dioctyl phthalate, dinonyl phthalate, butyl benzyl phthalate, tricresyl phosphate, tolyl phosphate, and tri (2-chloroethyl) phosphate. It is done.

In order to produce a colored urethane cement composition in the present invention, as a method of mixing various materials, a method of mixing using means such as a cement mixer or a forced spatula mixer is preferable. At that time, the polyisocyanate (A), the composition (B) containing active hydrogen, the cement (C), and the pigment dispersion composition (D) may be mixed at the same time, but the (A), (B) and It is preferable to mix (D) and mix (C). Further, the composition can be applied to a substrate and cured by, for example, troweling, pouring, spraying, or other appropriate methods.

  In addition, the composition of the present invention is mainly used for repairing a new concrete foundation or an existing concrete foundation on a base of a building, and is preferably used as a flooring or a flooring material for a flooring on a floor surface of a building or the like. be able to.

(Adjustment of pigment dispersion composition)

The compound of Table-1 was disperse | distributed using the sand grind mill, and the pigment dispersion compositions 1-4 were obtained.

The compositions shown in Table 2 were blended and forcedly stirred at Disper 2000 rpm to obtain active hydrogen compositions 1-3.

ユリックＨ−３０：ひまし油（伊藤製油株式会社製）
エクセノール３０３０：ポリプロピレングリコール（三井武田ケミカル製）
マイティー２０００Ｈ：ポリアクリル酸系減水剤（花王株式会社）
ポリオールＡ：トリエチレングリコールポリプロポキシレート（分子量：３４０）

Yurick H-30: Castor oil (made by Ito Oil Co., Ltd.)
Exenol 3030: Polypropylene glycol (Mitsui Takeda Chemical)
Mighty 2000H: Polyacrylic acid water reducing agent (Kao Corporation)
Polyol A: triethylene glycol polypropoxylate (molecular weight: 340)

The compositions shown in Table 3 were mixed and sufficiently mixed so as to obtain uniform powders 1-3.

The sedimentation stability of the pigment dispersion compositions obtained in Experimental Examples 1 to 3 was measured and described in Table 4.

The pigment dispersion compositions 1 to 3 prepared above and the pigment and the active hydrogen-containing compositions 1 to 3 were blended to determine the mixing stability, and are shown in Table-5 and Table-6.

Table 7 and Table 7 show the results of blending active hydrogen compositions 1 to 3, organic polyisocyanate, pre-prepared powders 1 and 2, and pigment dispersion compositions 1 to 4, applying and curing, and observing surface color unevenness. -8.

In Comparative Example 1 using a pigment dispersion composition that uses a dispersant that is not compatible with the organic compound (b2) having active hydrogen, and in Comparative Example 2 in which pigment powder is mixed with cement, light and dark streaks enter. Although a uniform colored floor surface could not be obtained, in Examples 1 to 3, a colored and uniform floor surface could be obtained.

Claims (3)

In an urethane composition based on an organic polyisocyanate compound (A); an active hydrogen composition (B) comprising an organic compound (b2) containing water (b1) and active hydrogen; and a cement (C), (I) A pigment dispersion composition in which a pigment is dispersed using one or more oily dispersion medium (d2) selected from the group consisting of diisononyl adipate, di-2-ethylhexyl phthalate, polyalkylene oxide and polyester polyol ( D2)
The amount of the water (b1) is 1 to 40% by weight with respect to the active hydrogen composition (B), and 1 to 10% by weight with respect to the entire urethane cement-based composition,
The amount of the cement (C) used is 5 to 30% by weight with respect to the entire urethane-based composition,
The amount of the pigment dispersion composition (D1) and / or pigment dispersion composition (D2) used is 0.1 to 10% by weight in the urethane cement-based composition,
A colored urethane cement-based composition, wherein the pigment content in the pigment dispersion composition is 5 to 80% by weight. A flooring using the colored urethane cement composition according to claim 1. A floor construction method using the coated flooring material according to claim 2.