JP2009035577A - Floor polish composition free of volatile organic compound - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor polish composition having excellent leveling properties and transparency without a risk of causing human health injury resulting from VOC (volatile organic compound) and free of the VOC. <P>SOLUTION: The floor polish composition is characterized in that the composition comprises a shell-core type polyurethane acrylate micro-emulsion in which the shell part is composed of a urethane polymer and the core part is composed of an acrylic polymer and is free of VOC. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a floor polish composition that can be suitably used to form a durable film on various floors.

Conventionally, a floor polish composition excellent in leveling property and transparency could not be obtained unless a glycol-based organic solvent is used as a fusing agent or the like. Fusion agents include alkyl (alkyl group having 1 to 8 carbon atoms) such as ethyl carbitol and methyl carbitol, dipropylene glycol monoalkyl such as carbitol and dipropylene glycol monomethyl ether (alkyl groups having 1 to 6 carbon atoms) It is one or a mixture of two or more of ether, benzyl alcohol, N-methyl-2-pyrrolidone, etc., and the addition amount is from 1% to several tens% in the floor polish (for example, Patent Document 1) ). However, although these fusion agents have a relatively high boiling point (250 degrees or less), they fall under the VOC (Volatile Organic Compound) defined by the Eco Mark Secretariat of the Japan Environment Association, and are used during floor polish construction and facility use. The volatilization of these VOCs can cause human health problems by breathing the volatilized VOCs by floor polish application workers and residents in the facility.
Under such circumstances, Patent Document 2 proposes a floor polish that does not contain 13 substances (formaldehyde, etc.) and the plasticizer TBEP (tributoxyethyl phosphate) that the Ministry of Health, Labor and Welfare sets guidelines for indoor air. Yes. However, even in this technique, a glycol-based solvent is used as a fusing agent, and a floor polish completely free of VOC has been desired.

Japanese Patent Laid-Open No. 11-35889 Japanese Patent Laid-Open No. 2003-73628

  An object of the present invention is to provide a floor polish composition that does not cause a human health disorder caused by VOC and does not contain VOC and is excellent in leveling and transparency.

When an acrylic emulsion and / or urethane emulsion that is not a microemulsion is used as the resin component of the floor polish, the emulsion particles of the resin component do not fuse and the leveling property is poor unless the fusion agent corresponding to VOC is used. Durability as a polish was insufficient and the body was not made as a floor polish, but by using a shell core type polyurethane acrylate microemulsion as a resin component of the floor polish, there is no need to add a fusion agent corresponding to VOC. The knowledge that a floor polish composition excellent in leveling properties and transparency can be obtained has been obtained, and the present invention has been made based on this knowledge.
That is, the present invention is characterized by containing a shell core type polyurethane acrylate microemulsion in which a shell part is composed of a urethane polymer and a core part is composed of an acrylic polymer, and no volatile organic compound is blended. A floor polish composition is provided.

The shell core type polyurethane acrylate microemulsion used in the present invention preferably has a particle size of 0.1 μm or less, and particularly preferably 10 to 90 nm. Here, the particle size of the microemulsion can be easily measured by a dynamic light scattering particle size distribution measuring apparatus.
As such a microemulsion, for example, the urethane polymer constituting the shell portion is (A) a hydroxyl group-containing monomer having an α, β-ethylenic double bond, and (B) at least one carboxyl group. A polyhydroxy compound containing two or more hydroxyl groups, (C) a polyhydroxy compound having two or more hydroxyl groups and (D) an isocyanate compound having two or more isocyanate groups are polymerized as essential monomers, Next, it is an aqueous polyurethane having a molecular weight of 10,000 to 200,000 obtained by contacting with a monoamine and a diamine, and the core is formed by introducing and polymerizing an acrylic monomer into the aqueous polyurethane. preferable. Furthermore, those having a molecular weight of 50,000 to 100,000 are preferred. Here, the molecular weight is a weight average molecular weight, and can be easily measured by a gel permeation chromatography method.

The hydroxyl group-containing monomer having an α, β-ethylenic double bond as component (A) used here is preferably hydroxyethyl methacrylate (HEMA), hydroxyethyl acrylate, glycerin monoallyl ether, or the like. Examples thereof include 2-hydroxyethyl methacrylate (HEMA), 2-hydroxyethyl acrylate, 3-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, and glycerin monoallyl ether.
The polyhydroxy compound containing at least one carboxyl group and two or more hydroxyl groups as component (B) contains a carboxyl group in the molecule such as dimethylolpropionic acid, dimethylollacic acid or dimethylolvaleric acid. Diols are preferred. Component (B) can impart water solubility to the microemulsion used in the present invention.

Examples of the polyhydroxy compound having two or more hydroxyl groups of component (C) include polyethers such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol, ethylene glycol, propanediol, butanediol, pentanediol, hexanediol, Dehydration of polyhydric alcohols such as neopentyl glycol and cyclohexanedimethanol with polyhydric carboxylic acids such as maleic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, dodecanedioic acid, terephthalic acid, isophthalic acid and naphthalenedicarboxylic acid Polydiols such as polyesters and polycarbonates obtained by condensation reactions or ring-opening polymerization reactions of cyclic esters such as caprolactone and pivalolactone, and ethylene glycol and diethylene Recall, triethylene glycol, 1,2-propylene glycol, 1,3-propanediol, 1,3-butylene glycol, 1,4-butanediol, 1,6-hexanediol, hydrogenated bisphenol A, ethylene oxide of bisphenol A Alternatively, propylene oxide adducts, low molecular glycols such as ethylene oxide of bisphenol S, polyethers such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol can be used.
Component (C) preferably contains a polyester polyol of an aromatic dicarboxylic acid and an alkylene glycol. In addition to the polyester polyol of aromatic dicarboxylic acid and alkylene glycol, component (C) more preferably contains a polyester of polyalkylene glycol or polycaprolactone and alkylene glycol. Here, the alkylene glycol preferably has 2 or 3 carbon atoms, the caprolactone preferably has 3 to 6 carbon atoms, and the aromatic dicarboxylic acid is preferably terephthalic acid or isophthalic acid. Furthermore, it is preferable that the molecular weight of a component (C) is 500-10,000.

The above-mentioned diols (A) to (C) may be used alone, or several corresponding components may be used in combination. However, it is particularly preferable that the polyester segment containing an aromatic ring is contained in an amount of 10% by weight or more based on the total polyurethane polymer. The polyester segment containing the aromatic ring can be introduced from a polyester diol of terephthalic acid or isophthalic acid, and can impart excellent durability to the resulting film.
Examples of the isocyanate compound having two or more isocyanate groups (D) used in the present invention include aromatic, aliphatic, and alicyclic various known diisocyanates. Specific examples of the diisocyanate compound include 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 1,5-naphthylene diisocyanate, 4,4'-diphenylmethane diisocyanate, m-phenylene diisocyanate, xylylene diisocyanate. Aromatic diisocyanates such as 4,4′-diphenyldimethylmethane diisocyanate, 4,4′-dibenzyl isocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, 1,4-dicyclohexylene diisocyanate, 1,4-cyclohexylene diisocyanate, Examples include aliphatic or alicyclic diisocyanates such as 4,4'-dicyclohexylmethane diisocyanate and isophorone diisocyanate. Of these, isophorone diisocyanate and 4,4′-dicyclohexylmethane diisocyanate are preferred.

The shell core type polyurethane acrylate microemulsion used in the present invention is, for example, an aqueous polyurethane resin having a polymerizable unsaturated bond corresponding to the shell portion in the side chain, for example, a diisocyanate compound and the diol compound in an organic solvent. To prepare a prepolymer. When this synthesis reaction is carried out, a small amount of a trivalent or higher isocyanate compound and a hydroxyl compound may be allowed to coexist as a copolymerization component, and a branched structure may be introduced into the resulting aqueous polyurethane resin.
As the organic solvent used for urethanization, those which are inert to the isocyanate group and miscible with water are preferable. Ketones such as acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone and cyclohexanone, tetrahydrofuran, dioxane, dimethoxy Specific examples thereof include ethers such as ethane and amide solvents such as N-methylpyrrolidone (NMP). The prepolymer obtained by the above method is neutralized with a neutralizing agent such as a tertiary amine, and after proceeding with the chain extension reaction, water is added to the reaction mixture and dispersed in water to give a polyurethane aqueous emulsion. It becomes a liquid and is preferably used in the present invention.

The neutralizing agent used here is ammonia, trimethylamine, triethylamine, tripropylamine, triethanolamine, monoethanolamine, N-methylmorpholine, morpholine, 2,2-dimethylmonoethanolamine, N, N-dimethyl. Examples include monoethanolamine.
Various known chain extenders can be used. Examples thereof include ethylenediamine, propylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine, m-xylylenediamine, 1,6-diaminocyclohexane, hydrogenated 4,4′-diaminodiphenylmethane, and the like.
The molecular weight of the aqueous polyurethane used in the present invention is preferably Mw (weight average molecular weight) = 3,000 or more and Mw = 100,000 or less, more preferably Mw = 5, in terms of polystyrene by gel permeation chromatography. 000 or more and Mw = 50,000 or less. When a molecular weight in this range is used, the toughness and wear resistance of the resulting coating film are improved.
The acid value of the aqueous polyurethane resin used in the present invention is preferably in the range of 5 mg-KOH / g to 200 mg-KOH / g, more preferably in the range of 10 to 100 mg-KOH / g. When an acid value in this range is used, the dispersion stability of the floor polish composition is improved, and the water resistance of the resulting film is improved.

  A core part is formed by polymerizing a polymerizable unsaturated monomer in the presence of an aqueous polyurethane emulsion having a polymerizable unsaturated bond in the side chain. What is an acrylic monomer. Examples of acrylic monomers include methacrylates such as methyl methacrylate (MMA), ethyl methacrylate, butyl methacrylate, hexyl methacrylate, cyclohexyl methacrylate, nonyl methacrylate, lauryl methacrylate (LMA), and stearyl methacrylate. Acrylic esters such as methyl acrylate, ethyl acrylate (EA), butyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, unsaturated nitriles such as acrylonitrile and methacrylonitrile, ethylene glycol Diacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, allyl methacrylate, diallyl phthalate, trimethylolpropane triacrylate, glycerin dia Polyfunctional vinyl monomers such as ether, polyethylene glycol dimethacrylate, polyethylene glycol diacrylate, amide monomers such as acrylamide, methacrylamide, n-methylol methacrylamide, β-hydroxyethyl acrylate (HEMA), β-hydroxyethyl Hydroxy group-containing monomers such as methacrylate, amino group-containing polymers such as dimethylaminoethyl acrylate and diethylaminoethyl acrylate, vinyl monomers such as glycidyl group-containing monomers such as glycidyl methacrylate and glycidyl methacrylate (GMA) Is mentioned.

In order to obtain a water-based resin having good coating film properties, an acrylic resin such as methyl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate or the like is selected from the above acrylic monomers. It is preferable to select a monomer mixture mainly composed of acid esters, methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, glycidyl methacrylate, and the like.
Examples of acrylic monomers having a ketone group include acrolein, diacetone acrylamide (DAAM), p-formylstyrene, vinyl methyl ketone, vinyl ethyl ketone, diacetone acrylate, acetonitrile acrylate, diacetone methacrylate, 2-hydroxypropyl. Examples thereof include acrylate acetyl acetate and butanediol-1,4-acrylate acetyl acetate.
Particularly preferred monomers include diacetone acrylamide, acrolein and vinyl methyl ketone. Two or more types of these monomers having a ketone group may be contained in the graft chain. The amount of the ketone group-containing vinyl monomer used is preferably 0.5 to 30% by weight, more preferably 1 to 20% by weight, based on the total dry weight of the graft polymer of the present invention.

The total weight (b) of the acrylic monomer that performs vinyl polymerization in the presence of the polyurethane aqueous emulsion is in the range of 0.1 ≦ b / (a + b) ≦ 0.9 with respect to the dry weight a of the polyurethane. It is good to be in. When it is within this range, the stability of the microemulsion obtained by polymerization becomes good, and the strength of the resulting film becomes preferable.
As the polymerization method of the acrylic monomer, radical polymerization is preferable. As the initiator for radical polymerization, 2,2'-azobisisobutyronitrile, t-butyl hydroperoxide, 1,1'-azobis- (Cyclohexane-1-carbonitrile), 2,2'-azobis- (2-amidinopropane) dihydrochloride, 2,2'-azobis- (2,4-dimethylvaleronitrile), potassium persulfate, 2,2 '-Azobis- (2-amidinopropane) dihydrochloride, 4,4'-azobis-4-cyanovaleric acid, ammonium persulfate and the like are mentioned, and these are 0.1 to 5 wt% with respect to the acrylic monomer. It is preferably used in the range of. In the above polymerization, a stable aqueous resin can be obtained without using a surfactant used in normal emulsion polymerization. However, if necessary, a surfactant or a self-emulsifiable vinyl monomer may be used in combination.

The shell core type microemulsion produced by the above method may be used non-crosslinked as a resin component for floor polishing, but may be used by crosslinking all or part of it with a polyvalent metal such as calcium, zinc or aluminum. good. Examples of these polyvalent metal ions include zinc ammonium carbonate and calcium hydroxide.
In the present invention, the above microemulsion can be used at an arbitrary ratio, but it is preferably 10 to 80 parts by mass and more preferably 20 to 60 parts by mass with respect to 100 parts by mass of the floor polish composition. preferable.
In addition to the above-mentioned shell core type urethane acrylate microemulsion, various components can be blended in the floor polish composition of the present invention. Specifically, it is preferable to use plasticizers, surfactants, synthetic and / or natural waxes, alkali-soluble resins, alkali agents and the like that do not contain volatile organic compounds.

Examples of the plasticizer include citric acid esters, dibasic acid esters, and diol esters. As the citrate esters, tributyl citrate and tributyl acetylcitrate are particularly preferable.
Dibasic acid esters include dimethyl adipate, diethyl adipate, dipropyl adipate, diisopropyl adipate, dibutyl adipate, diisobutyl adipate, dibutyl glycol adipate, dimethyl sebacate, diethyl sebacate, dipropyl sebacate, sebacic acid Diisopropyl, dibutyl sebacate, diisobutyl sebacate and dibutyl glycol sebacate, dimethyl fumarate, diethyl fumarate, dibutyl fumarate, isobutyl fumarate, dimethyl maleate, diethyl maleate, dibutyl maleate and isobutyl maleate are preferred. The diol ester is particularly preferably 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, which can be easily used as texanol (manufactured by Eastman Kodak) or CS-12 (manufactured by Chisso). Available. One or a mixture of two or more of these esters can be used.

It is preferably one or more selected from the group consisting of tributyl citrate, tributyl acetylcitrate, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and diisobutyl adipate.
In this invention, although said plasticizer can be used in arbitrary ratios, it is preferable to set it as 0-80 mass parts with respect to 100 mass parts of resin components, and it is more preferable to set it as 1-30 mass parts.
As the surfactant, an anionic surfactant or a nonionic surfactant can be used. In particular, it is preferable to use one or a mixture of two or more of nonionic surfactants such as polyether-modified silicon, anionic surfactants such as sodium polyoxyethylene alkyl sulfate, and fluorosurfactants. The surfactant can be used at an arbitrary ratio, but is preferably 0 to 5% by mass, more preferably 0.005 to 2% by mass in the floor polish composition of the present invention.

The floor polish composition of the present invention preferably contains a synthetic and / or natural wax. Examples of such waxes include synthetic waxes such as polyolefin wax emulsions, acrylic wax emulsions, and ionomer resin emulsions, and various natural wax emulsions. The polyolefin wax emulsion can be obtained commercially, for example, under the trade name Hitech E-4B or Hitech E-8000 (manufactured by Toho Chemical Co., Ltd.). As an acrylic wax emulsion, it can obtain commercially, for example as brand name CX-ST200 (made by Nippon Shokubai Chemical Co., Ltd.). Examples of the ionomer resin emulsion include those based on a copolymer of an unsaturated monomer such as ethylene and an unsaturated carboxylic acid or a derivative thereof, and an ethylene ionomer resin is preferable. For example, it can be obtained commercially under the trade name Chemipearl S-650 (Mitsui Petrochemical Industries).
Such a wax can be used at an arbitrary ratio, but is preferably 5 to 60% by mass of the resin component, and more preferably 10 to 30% by mass.

Furthermore, it is preferable to contain an alkali-soluble resin or an alkali agent.
As alkali-soluble resin, 1 type, or 2 or more types of mixtures, such as a styrene-maleic acid copolymer, an acrylic resin, and a rosin-maleic acid copolymer, can be used. These are preferably used in the form of an alkali metal salt, ammonium salt, amine salt or the like. Although alkali-soluble resin can be used in arbitrary ratios, it is preferable to set it as 0-20 mass% in a resin component, More preferably, it is 5-10 mass%. For example, it can be obtained commercially under the trade name Primal E-1531B (Rohm and Haas, USA) or SMA2625A (Allied Chemical, USA).

As the alkaline agent, a water-soluble alkaline agent is preferably used, and ammonia water, caustic soda or caustic potash is preferably used. It is preferable to use these so that the pH of the floor polish composition is 7 to 10.
The balance of the floor polish composition of the present invention is water, but it can further contain components such as an antifoaming agent, an antibacterial agent, an ultraviolet absorber, a dye, a fragrance, an acaricide, and a cockroach.
Next, although an Example and a comparative example are shown and this invention is demonstrated, this invention is not restrict | limited to these Examples.

Synthesis Example I1 (Production of microemulsion)
Polyester diol (PED) 240 g, polycaprolactone diol (PCL) 60 g isophorone diisocyanate (IPDI) 70 g, dimethylolpropionic acid (DMPA) 15 g, and methyl ethyl ketone (TEK) 120 g 1 liter equipped with a reflux condenser, thermometer and stirrer After charging into a four-necked flask and raising the temperature from room temperature to 90 ° C. over 30 minutes under a nitrogen atmosphere, a urethanization reaction was carried out for 2 hours. Subsequently, 6 g of 2-hydroxyethyl methacrylate (HEMA) was added dropwise over 30 minutes while maintaining the reaction mixture at 90 ° C. After completion of dropping, stirring was continued for 30 minutes while maintaining at 90 ° C., and then the reaction system was cooled to 40 ° C. over 30 minutes. Next, 11.2 g of triethylamine (TEA) was added to the prepolymer for neutralization, and then 600 g of ion-exchanged water was added. Subsequently, 6 g of hexamethylenediamine (HDA) was added to the reaction system as a chain extender, and stirring was continued for 1 hour at 40 ° C., and then methyl ethyl ketone (MEK) was distilled off under reduced pressure to remove polyurethane aqueous. Dispersion A was obtained. (The molecular weight by gel permeation chromatography of the solid polyurethane resin obtained by evaporating this dispersion A to dryness was Mn (number average molecular weight) = 17,000, Mw = 40,000.
470 g of this polyurethane aqueous dispersion A and 170 g of ion exchange water were charged into a 2 liter four-necked flask equipped with a reflux condenser, a nitrogen inlet tube, a thermometer, a dropping funnel and a stirrer and required 30 minutes from room temperature. The temperature was raised to 80 ° C. From a dropping funnel, a mixture of 160 g of methyl methacrylate (MMA), 60 g of butyl methacrylate (BMA), 10 g of diacetone acrylamide (DAAM), 2 g of ammonium persulfate (APS) and 50 g of distilled water was dropped over 4 hours, and the dropping was completed. Thereafter, stirring was continued at 80 ° C. for 3 hours to complete the graft polymerization reaction to obtain a core-shell type microemulsion.

The abbreviations in the synthesis examples and tables indicate the following compounds, respectively.
PED: Copolyester resin composed of ethylene glycol, neopentyl glycol, terephthalic acid, isophthalic acid, molecular weight 1800) Manufacturer: Unitika Ltd.
PCL: Polycaprolactone (molecular weight 2000) Manufacturer: Daicel Chemical Co., Ltd.
DMPA: dimethylolpropionic acid IPDI: isophorone diisocyanate (manufactured by Huls)
HDA: 1,6-hexanediamine TEA: Toluethylamine MEK: Methyl ethyl ketone EDA: Ethylenediamine MMA: Methyl methacrylate
BMA: butyl methacrylate DAAM: diacetone acrylamide APS: ammonium persulfate

  Using the compositions shown in Table 1, microemulsions of Synthesis Examples 2 to 7 were produced in the same manner as in Synthesis Example I.

Synthesis Example 8: Production of acrylic emulsion 29.3 g of pure water and 0.2 g of emulsifier (sodium lauryl sulfate) were added to a reaction vessel equipped with a stirrer, a reflux condenser, a dropping funnel, a thermometer, and a nitrogen introduction tube, and filled with nitrogen. Thereafter, the water bath was heated to 60 ° C. Further, 0.2 g (ammonium persulfate) of a polymerization initiator was dissolved in 10 g of pure water in a dropping funnel and attached to the reactor. In a separate stirred vessel, acrylic monomer 40g (methacrylic acid 2.4g, methyl methacrylate 25.6g, butyl acrylate 12g), molecular weight regulator 0.1g (lauryl mercaptan), emulsifier 0.2g (sodium lauryl sulfate), water 20g After emulsifying with a stirrer, the emulsifier is transferred to another dropping funnel and gradually dropped over 2 hours to complete the polymerization to obtain an acrylic emulsion having an active ingredient of 40% by weight (hereinafter abbreviated as%). It was.

Synthesis Example 9 Production of Styrene-Acrylic Emulsion Synthetic Example 8 except that the type and blending amount of styrene-acrylic monomer 40 g (methacrylic acid 4.8 g, styrene 12 g, methyl methacrylate 11.2 g, butyl acrylate 12 g) were changed. The production was carried out in the same manner. A styrene-acrylic emulsion having an active ingredient of 40% was obtained.

Synthesis Example 10: Production of aqueous polyurethane resin 205 g of polypropylene glycol (molecular weight 1000), 73 g of tolylene diisocyanate, 18 g of dimethylolpropionic acid and 207 g of N-methylpyrrolidone were placed in a reactor equipped with a reflux condenser, a thermometer and a stirrer. The prepolymer was prepared by performing a urethanization reaction while maintaining the temperature at 80 to 100 ° C. Next, 10 g of triethylamine was added to the prepolymer for neutralization, 5 g of hexamethylenediamine was added, and the polymerization reaction was carried out while maintaining the temperature in the reaction vessel at 35 ° C. or lower while adding distilled water, until the reaction was completed. 482 g of distilled water was added to obtain an aqueous polyurethane. The acid value per resin solid content of the aqueous polyurethane was 25. The active ingredient was 30%.

Using the emulsions synthesized above, the other components were blended in the amounts shown in Table 2 to prepare floor polish compositions, and their performance was evaluated by the methods shown below. The results are shown in Tables 2 and 3.
<Styrene-maleic acid (alkali-soluble resin) solution>
US Allied Chemical Co., Ltd. (trade name: SMA 2625A) was dissolved in aqueous ammonia to obtain a solution having a solid content of 17%.
<Acrylic resin emulsion (alkali-soluble resin)>
US Rohm and Haas product name Primal B-644 (42% solids)
<Polyolefin wax emulsion>
Product name Hitec E-4B (solid content 40%)

<Acrylic wax emulsion>
Product name CX-ST200 (solid content 40%) manufactured by Nippon Shokubai Chemical Industry Co., Ltd.
<Surfactant (anionic)>
Sodium dioctylsulfosuccinate <surfactant (nonionic)>
Polyoxyethylene lauryl ether (EO: 3 mol adduct)
<Surfactant (polyether-modified silicone)>
Product name BYK347 manufactured by Big Chemie Japan Co., Ltd.
<Surfactant (fluorine type)>
Product name Surflon S-111 manufactured by Asahi Glass Co., Ltd.

Test item re-applicability Evaluation was made according to JIS-K3920.
Excellent: Multilayer coating is clearly superior to single layer coating.
Good: Multi-layer coating is not much different from single-layer coating.
Poor: The multilayer coating is clearly inferior to the single layer coating.
Leveling property It evaluated according to JIS-K3920.
Glossiness It evaluated according to the polymer type of JIS-K3920 (application | coating 3 times).
Heel mark resistance It evaluated according to JIS-K3920. However, the evaluation method is as follows.
Excellent: Almost no heel mark is attached.
Good: The heel mark is slightly adhered.
Normal: Some heel marks are attached.
Defect: Many heel marks adhere.
Adhesiveness with flooring It evaluated according to JISK-5400-1990 cross cut tape method.
Excellent: There is no peeling of the coating film.
Good: There is almost no peeling of the coating film.
Poor: There is considerable peeling of the coating film.

  As is clear from the above Examples and Comparative Examples, the floor polish composition of the present invention exhibits good performance as a floor polish without using VOC which is an organic solvent by using a shell core type urethane acrylate microemulsion. I understand that. By using this VOC-free floor polish, there is no risk of VOCs arising from the floor polish, so the floor polish application worker and the residents in the facility have no possibility of causing human health problems. You can apply and live with confidence.

Claims (8)

  A floor polish composition comprising a shell core type polyurethane acrylate microemulsion in which a shell part is composed of a urethane polymer and a core part is composed of an acrylic polymer, and does not contain a volatile organic compound.   The urethane polymer constituting the shell part is (A) a hydroxyl group-containing monomer having an α, β-ethylenic double bond, and (B) a poly (ethylene) containing at least one carboxyl group and two or more hydroxyl groups. It is obtained by polymerizing hydroxy compound, (C) polyhydroxy compound having two or more hydroxyl groups and (D) isocyanate compound having two or more isocyanate groups as essential monomers, and then contacting with monoamine and diamine. 2. The floor polish according to claim 1, which is a water-based polyurethane having a molecular weight of 10,000 to 200,000, and uses a shell-core polyurethane acrylate microemulsion in which a core is formed by introducing an acrylic monomer into the aqueous polyurethane and polymerizing it. Composition.   The floor polish composition according to claim 2, wherein the component (A) is selected from the group consisting of hydroxyethyl methacrylate (HEMA), hydroxyethyl acrylate, and glyceryl monoallyl ether.   The floor polish composition according to claim 2, wherein the component (B) is selected from the group consisting of dimethylolpropionic acid, dimethylollacric acid and dimethylolvaleric acid.   The floor polish composition of Claim 2 in which a component (C) contains the polyester polyol of aromatic dicarboxylic acid and alkylene glycol.   The molecular weight of a component (C) is 500-10,000, The floor polish composition of any one of Claims 2-5.   The floor polish composition according to any one of claims 1 to 6, wherein the particle size of the shell core type polyurethane acrylate microemulsion is 0.1 µm or less.   The floor polish composition according to any one of claims 1 to 7, further comprising a synthetic and / or natural wax, an alkali-solubilizing resin, a plasticizer other than a phosphorus-based material, and a surfactant.