JP2005002787A - Method for inhibiting color difference of colored plaster coating resulting from re-coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for coloring a plaster composition, which uniformly and stably colors the entirety of the plaster composition and enables to form a desirable colored plaster coating, and furthermore to provide a method for inhibiting the occurrence of a color difference of colored plaster coating resulting from re-coating relating to the colored plaster composition. <P>SOLUTION: The method for coloring the plaster composition is characterized in that the plaster composition containing lime, a binder and water is colored by the use of a combination of a coloring pigment and a white pigment as the pigment. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for suppressing the occurrence of a color difference in a colored plaster coating film by overcoating with respect to a colored plaster composition.

  Stucco has excellent functions such as moisture control (moisture absorption and moisture release), antifungal properties and fire resistance in addition to a calm and solid finish, so it has long been used indoors and outdoors (such as walls and ceilings). It is a building material used as a painted wall material.

  Conventionally, plastering is generally carried out by first preparing materials by kneading lime and a binder with water in the field. However, since the blending ratio of lime, binder and water varies depending on the experience and skill of each plasterer, there is a problem in that a difference between the vendors tends to occur and a constant quality cannot be obtained. For this reason, the form which can mix lime and binder beforehand and only mix | blend water on-site (powder mixing stucco composition), or the form which can mix lime, binder, and water beforehand, and can be used immediately on-site. (Prepared stucco composition, water-containing stucco composition) are required.

  In addition, plaster basically has a white color based on the color of lime, which is the main raw material (white plaster), but in recent years, there has been a demand for colored plaster colored in various colors in accordance with the diversification of consumer needs. It is supposed to be. However, since it is generally difficult to disperse colorants uniformly in lime, colorants tend to cause color separation when blended with lime, and this has been pointed out to cause uneven color in colored stucco coatings (for example, patent documents). (See 1 and 2).

  In addition, said patent document (patent documents 1 and 2) is mentioned as a well-known literature regarding coloring of stucco, and the following patent documents 3-15 etc. can be mentioned as a well-known literature regarding already prepared stucco.

JP-A-7-196355 JP-A-9-156968 Japanese Utility Model Publication No. 56-7732 Japanese Utility Model Publication No. 56-65935 Japanese Utility Model Publication No. 2-13645 Japanese Unexamined Patent Publication No. 7-51840 Japanese Patent Laid-Open No. 7-61840 Japanese Patent No. 3083519 Japanese Patent No. 3094227 JP 2000-313840 A JP 2000-313841 A JP 2000-313843 A JP 2000-313844 A JP 2001-187861 A WO02 / 04569

  An object of this invention is to solve the problem of the on-site preparation (preparation at the time of use) of this conventional stucco, and the problem of coloring of stucco. Specifically, the present invention is a colored stucco composition prepared by adding a binder and a colorant or further water to lime in advance so that it can be used easily or immediately without the need for on-site preparation and toning. It is an object of the present invention to provide a method for solving the conventional problems related to coloring. More specifically, an object of the present invention is to provide a method for coloring a stucco composition, in particular, a method for coloring a stucco composition that can significantly suppress the occurrence of a color difference when repeatedly applied.

  Furthermore, this invention aims at providing the method of suppressing the color difference generation | occurrence | production by overcoating about a colored plaster composition.

  In order to supply colored stucco materials to the market in advance with a binder and a colorant or water added to the lime so that it can be used conveniently without the on-site preparation and toning, It is necessary to uniformly color the stucco composition as a main material and to maintain the color stably. Such non-uniform coloring and color separation of the composition is one of the causes of color unevenness and color difference of the formed coating film, and the commercial value as a decorative coating material (finish coating material) is remarkably impaired.

  The inventor of the present invention prevents uneven coloring and color separation of a colored plaster composition, particularly a colored plaster composition (water-containing colored plaster composition) pre-mixed with water, and does not cause color unevenness or color difference. We have been researching day and night with the aim of developing a plaster coating material that can be used to form lime. Instead of simply coloring lime, which is the main component of plaster, with a colored pigment, this is combined with a white pigment and colored. It has been found that the plaster composition can be uniformly and stably colored by using as a base. And according to the said coloring method, even when a coating film was formed, it was confirmed that a color stucco coating film with little color difference was able to be formed even when color skipping and color unevenness were significantly suppressed. Furthermore, the present inventor maintains a stable colored state in which the color separation is suppressed in a state where the water-containing colored stucco composition colored by the above method is filled in a water-resistant container to form a packaging form. It has been confirmed that it can be stably supplied to the market in the form and can be stored for a long time. The present invention has been developed based on these findings.

That is, this invention is the coloring method of the stucco composition hung up to the following items 1-6:
Item 1. A coloring method for a stucco composition containing lime, a binder, and water, wherein a coloring pigment and a white pigment are combined in combination as a pigment.
Item 2. The coloring method of the stucco composition of claim | item 1 which is a coloring method which suppresses the color difference of the coloring stucco coating film produced by recoating the coloring stucco composition containing lime, binder, and water.
Item 3. The coloring method of the stucco composition of claim | item 1 which is a coloring method which suppresses the color nonuniformity after drying of a colored plaster coating film.
Item 4. The coloring method of the stucco composition of claim | item 1 which is a coloring method which suppresses the color jump of a colored plaster coating film.
Item 5. The coloring method of the stucco composition of claim | item 1 which is the uniform coloring method of a water-containing stucco composition.
Item 6. The coloring method of the stucco composition of claim | item 1 which is a method of coloring a water-containing stucco composition, suppressing color separation.

In addition, the following aspect is included in the coloring method hung up to the said items 1-6. In addition, the following embodiments (a) to (g) can be used in combination with one or more of the above coloring methods.
(a) The coloring method of the stucco composition in any one of said claim | item 1-6 which uses slaked lime as lime.
(b) The coloring method of the plaster composition according to any one of Items 1 to 6, wherein an inorganic pigment is used as the white pigment.
(c) The coloring method of the plaster composition according to any one of Items 1 to 6, wherein titanium oxide is used as a white pigment.
(d) The method for coloring a plaster composition according to any one of Items 1 to 6, wherein an inorganic pigment is used as the coloring pigment.
(e) blending at least one compound selected from the group consisting of a cationic hydrophilic polymer compound, a nonionic hydrophilic polymer compound and a hydrophilic polymer compound having a hydroxyl group into the plaster composition, The coloring method of the stucco composition in any one of claim | item 1 -6.
(f) The coloring method of the stucco composition in any one of said claim | item 1-6 which mix | blends the hydrophilic high molecular compound which has a nonionic hydroxyl group with a stucco composition.
(g) Item 1 to above, in which at least one cellulose derivative selected from the group consisting of methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose is blended into the stucco composition. The coloring method of the stucco composition in any one of 6.

  As described above, the coloring method of the plaster composition of the present invention is suitably used for suppressing the color unevenness and color skip peculiar to the colored plaster coating film, which has been a problem with conventional colored plaster compositions. Therefore, the “coloring method of the plaster composition” of the present invention is specifically “a coloring method for suppressing color unevenness of the colored plaster coating film” or “a coloring method for suppressing color skip of the colored plaster coating film”. .

  Furthermore, the coloring method of the plaster composition of this invention is used suitably in order to suppress generation | occurrence | production of the color difference peculiar to the colored plaster coating film by repeatedly coating the colored plaster composition. Therefore, the “coloring method of the plaster composition” of the present invention is specifically “a coloring method for suppressing the color difference of the colored plaster coating film produced by repeatedly coating the colored plaster composition”.

  The stucco composition is always used in a state where water is blended during construction (when used). The stucco composition targeted by the coloring method of the present invention described in the above item 1 is a stucco composition used in a state containing lime, a binder and water at the time of construction, and is a stucco composition distributed in the market. Regardless of the form. Specifically, the stucco composition distributed in the market includes a powder mixture containing lime and a binder, which is used by blending water at the time of use, and an existing mixture containing lime, binder and water. A pre-prepared plaster composition (water-containing plaster composition) that can be used immediately in the field can be mentioned. That is, in the case of the former, even if the powder mixture containing lime and a binder is used as a pigment and colored in combination with a color pigment and a white pigment, it is used as long as it is used by blending water during construction. It is included in the coloring method of the invention.

  The coloring method of the plaster composition of the present invention is also a method of suppressing the occurrence of color separation and coloring the uniform color (uniform) over the entire water-containing plaster composition containing water. Therefore, the “coloring method of the stucco composition” referred to in the present specification can be rephrased as “a method of suppressing color separation of the colored stucco composition”.

As described above, according to the plaster composition colored by the above method, the color difference caused by overcoating can be significantly suppressed. Thus, the present invention provides the following methods:
Item 7-1. A method for suppressing a color difference of a colored plaster coating film produced by overcoating a colored plaster composition, the method using a composition containing lime, a white pigment, a color pigment, a binder and water as the colored plaster composition .
Item 7-2. A method for suppressing the color difference of a colored plaster coating film produced by overcoating a colored plaster composition, the method using a composition containing lime, titanium oxide, a color pigment, a binder and water as the colored plaster composition .
Claim | item 7-3. A method for forming a colored plaster coating film that suppresses the occurrence of a color difference due to overcoating, the method comprising overcoating using a colored plaster composition containing lime, a white pigment, a color pigment, a binder, and water.
Item 7-4. A method for forming a colored plaster coating film that suppresses the occurrence of a color difference due to overcoating, the method comprising overcoating with a colored plaster composition containing lime, titanium oxide, a color pigment, a binder, and water.
Item 7-5. Item 7. The method according to any one of Items 7-1 to 7-4, wherein the colored plaster composition is formed by coloring a white pigment or titanium oxide in lime with a coloring pigment as a base. .
Item 7-6. Item 6. The method according to any one of Items 7-1 to 7-5, wherein the overcoating is performed by sequentially applying the colored plaster composition or repair coating.
Item 7-7. Item 7. The method according to any one of Items 7-3 to 7-6, which is a method of forming a colored plaster coating film having a uniform color that is not conspicuous.
Item 7-8. The coloring plaster coating film by which generation | occurrence | production of the color difference by overcoating formed by the method in any one of claim | item 7-3 thru | or 7-6 was suppressed.
Item 7-9. Item 7-3 to 7-6, a colored plaster coating film having a uniform color in which the occurrence of color difference due to overcoating is suppressed and coating is not conspicuous, formed by the method described in any one of Items 7-3 to 7-6.

Each of the methods listed above includes the following modes. In addition, the following embodiments (a) to (d) can be used in combination with one or more of the above methods.
(a) The method according to any one of the above, wherein the lime is slaked lime.
(b) The method according to any one of the above, wherein an inorganic pigment is used as the white pigment.
(c) The method according to any one of the above, wherein titanium oxide is used as a white pigment.
(d) The method according to any one of the above, wherein an inorganic pigment is used as the coloring pigment.

Moreover, this invention relates to the form which maintained the coloring of the water containing plaster composition stably. Specifically, the present invention is a plaster package listed in the following items 10 to 11:
Item 10. The plaster package in which the colored plaster composition colored by the coloring method described in any one of Items 1 to 6 is filled in a water-resistant container and accommodated in an airtight state.
Item 11. Item 11. The plaster package according to Item 10, wherein the colored plaster composition is degassed and sealed in a water-resistant container.

The plaster package includes the following modes. In addition, the following embodiments (a) to (j) can be used in combination with one or more of the plaster packagings according to the above item 10 or 11.
(a) The plaster package described in the above item 10 or 11, wherein the lime used in the colored plaster composition is slaked lime.
(b) The plaster package according to Item 10 or 11, wherein the white pigment used in the colored plaster composition is an inorganic pigment.
(c) The plaster package according to Item 10 or 11, wherein the white pigment used in the colored plaster composition is titanium oxide.
(d) The plaster package according to Item 10 or 11, wherein the color pigment used in the colored plaster composition is an inorganic pigment.
(e) The colored plaster composition further contains at least one compound selected from the group consisting of a cationic hydrophilic polymer compound, a nonionic hydrophilic polymer compound, and a hydrophilic polymer compound having a hydroxyl group. The plaster package according to Item 10 or 11, which is to be used.
(f) The plaster package according to Item 10 or 11, wherein the colored plaster composition further comprises a hydrophilic polymer compound having a nonionic hydroxyl group.
(g) The colored plaster composition further contains at least one cellulose derivative selected from the group consisting of methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose. The plaster package described in Item 10 or 11 above.
(h) The plaster package according to Item 10 or 11, wherein the water resistant container is a carbon dioxide barrier container.
(i) The plaster package according to item 10 or 11, wherein the water-resistant container is a water vapor barrier container.
(j) The plaster package according to the above item 10 or 11, wherein at least the inner surface where the water-resistant container contacts the colored plaster composition has alkali resistance.

(1) Coloring method of stucco composition
(1-1) The present invention is a method for uniformly coloring a stucco composition used in a state containing lime, a binder and water. Moreover, this invention is suitably used in order to suppress the color difference generation | occurrence | production by the repeated coating of the colored plaster coating film formed with the colored plaster composition (water-containing colored plaster composition) containing lime, binder, and water. It is a coloring method of a composition.

  (1-2) The method can be achieved by using a combination of a color pigment and a white pigment for coloring the plaster composition. The present invention is based on the idea of combining a white pigment with lime, which is the main component of stucco, and coloring with a color pigment based on this when coloring the stucco composition.

(1-3) As lime used here, lime used as a stucco material can be widely cited. Specific examples include quick lime whose main component is calcium oxide and slaked lime whose main component is calcium hydroxide. In addition, as these lime, the lime reproduced | regenerated from waste materials, such as a construction and civil engineering member, can also be used. These limes may be used alone or in combination of two or more. Preferably it is slaked lime. In addition, quick lime and slaked lime here mean lime containing calcium oxide and calcium hydroxide as main components, respectively, as long as calcium carbonate (calcite, aragonite, vaterite, basic calcium carbonate and amorphous) It does not particularly preclude the inclusion of precipitated calcium carbonate (eg, heavy calcium carbonate, heavy calcium carbonate) and dolomite (CaMg (CO ₃ ) ₂ ). The slaked lime may contain quick lime (calcium oxide) as another component, and the quick lime may contain slaked lime (calcium hydroxide) as another component.

  (1-4) Although the ratio of the lime to be blended in the plaster composition is not particularly limited, it is usually 15 to 95 weight as the blend ratio of lime per 100% by weight of the solid content of the final plaster composition (colored plaster composition). % Can be suitably selected from the range of%. More specific blending ratios are 15 to 75% by weight, preferably 30 to 70% by weight, more preferably 40 to 70% by weight, and still more preferably 45 to 65% by weight.

(1-5) The white pigment used in combination with the lime may be an organic pigment or an inorganic pigment, but is preferably an inorganic white pigment. Specific examples include at least one inorganic white pigment selected from the group consisting of titanium oxide, zinc white, zinc sulfide, lithopone, lead white, antimony white and zirconia. These may be used alone or in combination of two or more. Preferred is titanium oxide, or a combination of titanium oxide and another white pigment. Titanium oxide can be used in any of rutile, anatase and brookite forms as long as it is used as a white pigment, but is preferably in the rutile form. Incidentally, the titanium oxide may be surface treated with a hydrous metal oxide Al ₂ O ₃ · nH ₂ O or SiO ₂ · nH ₂ O or the like for the purpose of improving performance such as dispersibility and durability.

  (1-6) The particle diameter of the white pigment is not particularly limited, but may be, for example, 0.01 to 0.5 μm, preferably 0.1 to 0.5 μm (primary particle diameter by electron microscopic method).

  (1-7) The mixing ratio of the white pigment is not particularly limited as long as the effect of the present invention is exhibited. Preferably it is at least 0.1 part by weight, more preferably 0.5 part by weight or more, further preferably 1 part by weight or more, more than 100 parts by weight of lime contained in the final plaster composition (colored plaster composition). More preferably, it is 5 parts by weight or more. The higher the proportion of the white pigment, the more effective the effect is. However, from the viewpoint of economy and other aspects, usually 0.1 to 50 parts by weight, 0.5 to 40 parts by weight, 1 to 30 parts by weight, The range of 5-25 weight part or 8-20 weight part can be illustrated. Although not limited, the blending ratio per 100% by weight of the solid content of the final plaster composition is, for example, 0.05 to 40% by weight, preferably 0.25 to 30% by weight, and more preferably 0.5% in terms of solids. -25% by weight, more preferably 2.5-20% by weight, and still more preferably 4-15% by weight, can be exemplified, and these ranges can be used as a guide to adjust appropriately.

  (1-8) The colored pigment to be blended in the plaster composition is not particularly limited as long as it is a colored pigment other than white. Moreover, it is not ask | required whether an organic pigment and an inorganic pigment differ as long as there exists an effect of this invention. Specifically, black pigments such as carbon black and iron oxide (iron black): cadmium red, red beryllium (red iron oxide), molybdenum red, red pigment such as red lead: chrome yellow, titanium yellow, cadmium yellow Yellow pigments of yellow iron oxide (yellow iron), tan, antimony yellow, vanadium tin yellow, vanadium zirconium yellow: green pigments such as chromium oxide, viridian, titanium cobalt green, cobalt green, cobalt chrome green, Victoria green, phthalocyanine green : Blue pigments such as ultramarine, bitumen, cobalt blue, cerulean blue, cobalt silica blue, cobalt zinc silica blue, and the like. Preferably, it is an alkali-resistant color pigment, more preferably, iron oxide such as black iron oxide (iron black), red bean (red iron oxide), or yellow iron oxide (yellow iron) or a metal oxide such as ultramarine, or It is a coloring pigment mainly composed of carbon black. In addition, these may be used individually by 1 type, or may combine 2 or more types arbitrarily, and can adjust a combination and a mixture ratio suitably so that it may become a desired color.

  (1-9) Further, the blending ratio of the color pigment can be appropriately adjusted depending on the kind of the color pigment to be used and the desired color, and is not particularly limited. Usually, 0.01 weight part or more with respect to 100 weight part of white pigments contained in a colored plaster composition, for example, it can select suitably from the range of 0.01-100 weight part, and can be used. Examples include 0.05 to 100 parts by weight, 0.1 to 80 parts by weight, 0.1 to 50 parts by weight, 0.2 to 40 parts by weight, and 0.5 to 30 parts by weight. .

  (1-10) The binder used as a component of the stucco composition is not limited as long as it has a property of enhancing the initial adhesion between limes or increasing the adhesion to the construction surface of the stucco coating material. A paste (funori, seaweed paste, ginkgo paste, etc.), a synthetic paste (chemical paste), and a synthetic resin can be arbitrarily used. The synthetic resin is preferably a water-soluble or water-dispersible resin. Specifically, styrene / acrylic copolymers such as styrene-acrylic ester, styrene-acrylonitrile and styrene-acrylamide-ethyl acrylate, vinyl acetate-acrylic acid. Vinyl acetate / acrylic copolymers such as esters and vinyl acetate-methacrylic acid esters, butadiene / acrylic copolymers such as butadiene-acrylonitrile, vinyl chloride / acrylic copolymers, vinylidene chloride / acrylic copolymers, Veova / acrylic copolymers Polymer, acrylic copolymer, vinyl chloride / ethylene copolymer, vinyl chloride / vinyl acetate copolymer, vinyl chloride / vinylidene chloride copolymer, vinyl chloride / veova copolymer, vinyl acetate / ethylene copolymer, Vinyl acetate / veova copolymer, vinyl acetate / vinyl Oleic acid ester (eg vinyl acetate / dibutyl fumarate), vinyl acetate / maleic acid ester (eg vinyl acetate / dibutyl maleate); Veova / ethylene, acrylic modified / alkyd resin, acrylic modified / vinyl acetate / vinyl chloride Examples thereof include a vinyl-based synthetic resin such as a copolymer resin, a fluorine-modified acrylic resin, and a silicon-modified acrylic resin, or a polyurethane resin. From the viewpoint of weather resistance, an acrylic resin is preferable. As such a polymer, a polymer comprising at least one of (meth) acrylic acid, (meth) acrylic acid ester, (meth) acrylamides, or (meth) acrylonitrile described in Japanese Patent No. 3094227 as a monomer component (Homopolymer, copolymer) can be exemplified (see Japanese Patent No. 3094227, paragraphs [0015] to [0017]. The description of the patent publication is incorporated as the description of the specification of the present invention).

  (1-11) The ratio of the binder to be blended in the stucco composition is not particularly limited. For example, the blending ratio of the binder per 100% by weight of the solid content of the final colored stucco composition is usually 2 in terms of solids. A range of ˜50% by weight can be mentioned. Preferably it is 5 to 30 weight%, More preferably, it is 5 to 20 weight%.

  (1-12) The ratio of water blended in the plaster composition of the present invention is not particularly limited. Preferably, it can be appropriately selected from a range in which water is contained at a ratio of 10 to 70% by weight per 100% by weight of the final water-containing colored plaster composition. In this case, the water-containing colored stucco composition is prepared so that the solid content is in a proportion of 30 to 90% by weight. More specifically, for example, when preparing a water-containing colored plaster composition in a form suitable for spraying, roller or brushing (so-called paint form), water is usually 30 to 60% by weight, preferably 35 to 50%. It is desirable to prepare such that it is contained in a proportion by weight. Moreover, when preparing a water-containing colored plaster composition in a form suitable for glazing (so-called coating material form), water is usually contained in a proportion of 10 to 40% by weight, preferably 20 to 35% by weight. It is desirable to prepare.

  (1-13) Coloring (toning) of the plaster composition is basically a mixture of the above-mentioned components, or a conventional method for coating materials or paints, such as blending equipment (mixer, shaker, mill, kneader, etc.) It can implement by mixing using. At this time, it can also be appropriately adjusted to a desired viscosity according to the intended use and coating method. Moreover, in the case of the stucco composition of the aspect used by mix | blending water at the time of use, it is preferable to use a powder material as said components other than water, and after mixing and coloring these components other than water It can be prepared by blending water.

  (1-14) The viscosity of the colored stucco composition containing water is not particularly limited as long as it can be used as a paint or a coating material. Although not constrained, if the water-containing stucco composition is prepared to be suitable for spraying, rollering or brushing, it should be at least 300 cps at 25 ° C, preferably 300-10,000 cps, more preferably 700-10,000 cps, Moreover, when preparing so that it may be suitable for glazing, it can prepare so that it may become the range of 2,000-30,000cps at 25 degreeC, Preferably it is 5,000-20,000cps. Viscosity adjustment of the stucco composition can be adjusted by adjusting the solid content (water content), adjusting the type of binder and its blending ratio, and adding a thickener as necessary. Good.

  (1-15) Here, the thickener is preferably used that has good compatibility with water, water solubility or water dispersibility, and is compatible with lime which is the main component of the stucco composition. The Specifically, cationic or nonionic hydrophilic polymer compounds can be exemplified.

  (1-16) Examples of the cationic hydrophilic polymer compound include compounds having a cationic hydrophilic group such as a quaternary ammonium base or an amino group. Specifically, aminoalkyl (meth) acrylate quaternary salt (co) polymer, polyaminomethylacrylamide salt or quaternary ammonium salt, acrylamide / aminomethylacrylamide copolymer salt or quaternary ammonium salt, polyaminomethyl Acrylamide salt or quaternary salt, chitosan hydrochloride, sulfate or acetate salt, cationized starch, polyethyleneimine, vinyl pyrrolidone / dimethylaminoethyl methacrylate quaternary copolymer, hydroxypropyltrimethylammonium chloride guar gum, hydroxy Examples include propyltrimethylammonium chloride starch.

  (1-17) Nonionic hydrophilic polymer compounds include a wide range of compounds having a nonionic hydrophilic group such as a hydroxyl group, an ether group or an amide group. Specifically, formalin condensate of polyvinyl alcohol, alkylphenol alkylene oxide adduct, polyethylene polyamine propylene oxide / ethylene oxide adduct, alkylene oxide adduct of alkylamine, polyalkylene glycol copolymer, polyglycol ester, polyacrylamide, polyethylene Gum gum, locust bean gum, tragacanth gum, Karaya gum, crystal gum, pullulan, xanthan gum gum; methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropyl Methyl cellulose, hydroxyethyl methyl Cellulose derivatives such as cellulose and the like.

  (1-18) Preferably, it is a nonionic hydrophilic polymer compound because it does not affect the behavior of an electrolytic substance such as lime that may be present in the stucco composition and can be used regardless of its presence. is there. Among these, a cellulose derivative is preferable.

  (1-19) Further, a hydrophilic polymer compound having a hydroxyl group can be used as a thickener.

  (1-20) Specific examples of hydrophilic polymer compounds having a hydroxyl group include starches such as starch phosphate, cationized starch, starch / acrylic acid / sodium acrylate, and hydroxypropyltrimethylammonium chloride starch; methylcellulose Cellulose derivatives such as ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose; xanthan gum, gellan gum, gum arabic, carrageenan, alginic acid or salt thereof, chitosan or salt thereof, hydroxypropyltrimethylammonium chloride Guar gum, guar gum, locust bean gum, tara gum, curdlan, pullulan, chitin And polysaccharides such as tamarind seed gum, dextran and dextrin; polyvinyl alcohol; polyhydric alcohols such as glycerin and polyethylene glycol.

  (1-21) Preferably, it is a nonionic hydrophilic polymer compound having a hydroxyl group. Specific examples include polyvinyl alcohol, formalin condensates of alkylphenol alkylene oxide adducts, polyethylene polyamine propylene oxide / ethylene oxide adducts, alkylamine alkylene oxide adducts, polyalkylene glycol copolymers, polyglycol esters. , Polyethylene oxide, polyvinylpyrrolidone, polyvinylpyrrolidone / vinyl acetate copolymer; gum agents such as guar gum, locust bean gum, tragacanth gum, karaya gum, crystal gum, pullulan, xanthan gum; methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose , Hydroxypropyl methylcellulose, hydroxyethyl Cellulose derivatives such as Le cellulose is exemplified. Preferred are cellulose derivatives such as methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose.

  (1-22) Although not limited, when the cellulose derivative has a methoxyl group or an ethoxyl group, the degree of substitution (per hydroxyl group substituted with a methoxyl group or an ethoxyl group per glucose ring unit of cellulose) Suitable examples of the average number) are 1 to 2.5, preferably 1.3 to 2. Moreover, when it has a hydroxypropoxyl group or a hydroxyethoxyl group, as substitution mole number (average number of moles of hydroxypropoxyl group or hydroxyethoxyl group added per glucose ring unit of cellulose), 0.1 to 0.8, Preferably 0.1-0.5, More preferably, 0.15-0.3 can be mentioned.

  (1-23) Each of the above hydrophilic polymer compounds is not particularly limited in molecular weight, but is preferably about 3,000 to 20,000 mPa · s, preferably in terms of the viscosity of a 2% aqueous solution (20 ° C.), preferably Has about 4,000 to 15,000 mPa · s. As such, there is no limitation, but a hydrophilic polymer compound having a molecular weight in the range of 1,000,000 to 1,000,000 can be appropriately selected and used. Those having a molecular weight of preferably 5,000 to 1,000,000, more preferably 10,000 to 1,000,000, and even more preferably 100,000 to 500,000 can be used.

  (1-24) The ratio of the various hydrophilic polymer compounds to be blended in the stucco composition is not particularly limited, and is solid as a ratio included in the solid content of 100% by weight of the colored stucco composition that is the final composition. In terms of conversion (total amount), it can be appropriately selected from the range of usually 0.01 to 3% by weight. Preferably it is 0.02 to 2 weight%, More preferably, it is 0.05 to 2 weight%, More preferably, it is 0.1 to 1 weight%. Although not limited, the hydrophilic polymer compound is 0.003 to 2.5% by weight, preferably 0.009 to 1.5% by weight, more preferably 0.00% in 100% by weight of the water-containing colored plaster composition. It is desirable to adjust to a ratio of 015 to 1.5% by weight, more preferably 0.03 to 0.8% by weight.

  (1-25) According to the above hydrophilic polymer compound, the viscosity of the colored stucco composition containing lime, white pigment, color pigment, binder and water can be adjusted, and the lime in water Aggregation and solid-liquid separation (precipitation of solid content and water separation) can be more effectively prevented.

  (1-26) As other thickeners, any thickener used in the field of cement or concrete that does not hinder the effects of the present invention can be arbitrarily selected and used. Preferably, it is a nonionic thickener without electrolysis.

  (1-27) Further, the stucco composition targeted by the present invention includes, as other optional components, fibers such as extender pigments, oils and soot, photocatalysts, pigment dispersants, as long as the effects of the present invention are not hindered. Wetting agent, antifoaming agent, freeze-thaw stabilizer, film formation aid, rheology modifier, filler, pH adjuster, ion exchange resin, surfactant, plasticizer, water reducing agent, preservative, antibacterial agent, fluidization An agent, a waterproofing agent, a coagulant, a coagulation accelerator, or the like can also be blended.

  (1-28) The extender pigments include talc, kaolin clay, aluminum hydroxide, calcium carbonate (heavy calcium carbonate, light (precipitation) calcium carbonate), bentonite, barium sulfate (precipitation barium sulfate, barite powder) ), White carbon, silica and the like.

  (1-29) As oil, oils conventionally used in plaster materials can be widely used. For example, rapeseed oil, linseed oil, safflower oil, sunflower oil, avocado oil, evening primrose oil, soybean oil, corn oil Various vegetable oils such as peanut oil, cottonseed oil, sesame oil, rice oil, rapeseed oil, olive oil, castor oil, emma oil, kiri oil, niger seed oil, kapok oil, safflower oil, purple seed oil, primrose seed oil, camellia oil, etc. Can be mentioned.

  (1-30) Examples of the photocatalyst include oxides having photocatalytic activity. Such oxides having photocatalytic activity include titanium oxide, rubidium oxide, cobalt oxide, cesium oxide, chromium oxide, rhodium oxide, vanadium oxide, zinc oxide, manganese oxide, rhenium oxide, ferric oxide, tungsten trioxide, and oxide. Examples thereof include inorganic oxides such as zirconium, tin oxide, bismuth oxide, ruthenium oxide, strontium titanate, molybdenum oxide, germanium oxide, lead oxide, cadmium oxide, copper oxide, niobium oxide, and tantalum oxide.

  (1-31) As the pigment dispersant and wetting agent, both can be appropriately selected from those usually used in blends in paints and coating materials. For example, a formalin condensate of sodium alkylnaphthalene sulfonate, a low molecular weight Examples include polyammonic acrylate, low molecular weight styrene-ammonic acid copolymer, polyoxyethylene fatty acid ester and alkylphenol ether, sulfosuccinic acid derivative, block polymer of polyethylene oxide and polypropylene oxide, and the like.

  (1-32) The antifoaming agent can be appropriately selected from those usually used by blending with paints, coating materials and building spraying materials. Examples thereof include various foam suppressors and foam breakers such as octyl alcohol, glycol derivatives, cyclohexane, silicon, pluronic surfactants and polyoxyethylene alkylphenyl ether.

  (1-33) Examples of fillers include inorganic aggregates (fine aggregates) such as quartz sand, cold water sand, perlite, vermiculite, shirasu spheres, and sludge calcined aggregates, as well as kaolin, halloysite, and montmorillonite. , Bentonite, gibbsite, mica, ceramic sand, glass beads, perlite, acid clay, porcelain stones, branstone, feldspar, limestone, gypsum, dolomite, magnesite, talc, tourmaline, etc .; barium hydroxide, hydroxylated Water-insoluble metal hydroxides such as magnesium and natural calcium; calcium silicate hydrates such as tobermonite and zonotolite; hydrates of various oxides such as calcium aluminate hydrate and calcium sulfoaluminate hydrate; Alumina, silica, hydrous silicic acid, magnesia, zinc oxide, spinel, synthetic calcium carbonate Examples thereof include powdery, fibrous or granular inorganic materials such as synthetic minerals such as calcium, calcium phosphate, magnesium carbonate, barium sulfate and potassium titanate.

  (1-34) The waterproofing agent is not particularly limited, and examples thereof include silicone oil, silicone resin, and organoalkoxysilane.

  (1-35) There is no particular limitation on the setting agent or setting accelerator. For example, when calcium sulfate is included in the plaster composition, it is preferable to use one having an action of assisting or enhancing the hydration-hardening expression of the calcium sulfate. Specific examples of such an action include potassium sulfate, alum, fine powder of dihydrate gypsum, and organic acids such as oxalic acid.

  (1-36) The colored stucco composition thus prepared is a composition without color separation by mixing a white pigment with lime and coloring with a coloring pigment based on this, as shown in the following experimental examples. It is uniformly and stably colored throughout. In addition, the judgment whether the colored plaster composition is uniformly colored (uniformly colored) throughout the composition without color separation is a colored plaster composition prepared by blending water (water-containing plaster composition). Can be judged visually by stirring in a transparent container (or transparent bag) or after standing. It can also be judged by applying (coating) the prepared water-containing colored plaster composition to a substrate and observing the presence or absence of color unevenness for the formed coating film.

  (1-37) The water-containing colored stucco composition colored uniformly and stably by the method of the present invention has uneven color, undercoating and overcoating by overcoating as shown in Experimental Examples 1 and 3 etc. It can be effectively used for the formation of a colored plaster coating film in which the occurrence of a color difference from the surface (difference in chromaticity, color, hue or tone of the coating film surface) is suppressed. Therefore, the coloring method of the present invention is also a coloring method for simultaneously suppressing color unevenness after drying of the colored plaster coating film and a coloring method for suppressing a color difference caused by repeatedly coating the water-containing colored plaster composition. Moreover, as shown in Experimental Examples 2 and 3, by using the water-containing colored plaster composition colored by the method of the present invention, it is possible to significantly suppress whitening due to the color skip characteristic of the colored plaster coating film. . Therefore, the coloring method of the present invention is also a coloring method that suppresses the color jump of the colored plaster coating film or the whitening caused thereby. In addition, as shown in Experimental example 3 etc., the problem of the color unevenness generation | occurrence | production of a colored plaster coating film with time or the color difference by repeated coating is also eliminated simultaneously by suppressing the color jump of a coloring plaster coating film. From this, the phenomenon of color unevenness caused by uneven color and overcoating that are noticeable in colored plaster coatings is caused by the fact that lime, which is the main component of plaster, especially slaked lime, is a strong alkali. This is considered to be caused by color skipping and whitening due to color skipping (a phenomenon in which white lime floats).

  (1-38) The water-containing colored stucco composition colored by the method of the present invention preferably has color unevenness or color difference due to overcoating (particularly color unevenness due to whitening due to color skipping or color difference due to overcoating). Occurrence) is suppressed to such an extent that the commercial value as a decorative coating material (finishing coating material) is not impaired. By using a white pigment in combination, color unevenness and overcoating are performed as compared with the case where no white pigment is used. As long as the effect of suppressing the color difference caused by the color difference, particularly the effect of suppressing the color unevenness caused by the color skip or the color difference caused by the overcoating is recognized, it belongs to the technical scope of the present invention.

(2) Color difference generation suppression method by overcoating water-containing colored plaster composition
(2-1) As described in (1-37) above, the water-containing colored stucco composition colored by the method of the present invention described in (1) has a color difference in the colored stucco coating even if it is overcoated. Generation | occurrence | production is suppressed significantly and it can use effectively in order to form the coloring stucco coating film which has a uniform color which is not conspicuous. Therefore, this invention provides the method of suppressing the color difference generation | occurrence | production of the colored plaster coating film which arises by repeated coating about the water-containing colored plaster composition which has lime as a main component from another angle.

  (2-2) The said method can be achieved by employ | adopting the method explained in full detail in (1) as a coloring method of a stucco composition. Specifically, it can be carried out by coloring a plaster composition containing lime, a white pigment, a binder, and water using a color pigment. In other words, the present invention is carried out by using a composition prepared by mixing lime, a white pigment, a color pigment, a binder and water as a water-containing colored plaster composition used for forming a colored plaster coating film. Can do.

  (2-3) Types of lime and binder used for coloring of water-containing plaster composition (preparation of colored plaster composition), the amount and type of white pigment and color pigment, the amount of water As for the preparation method and the like, those described in the above (1) can be used in the same manner (see (1-3) to (1-14) etc.). Moreover, about the other component which can be mix | blended with a water containing colored plaster composition, the thing similar to the description of the above-mentioned (1) can be used (refer to (1-15)-(1-35)).

  (2-4) In addition, the coating method of the water-containing colored stucco composition is not particularly limited, and the usual methods used for coating materials and paints [brush coating, roller coating, spray coating (airless gun, air coating) Spray)] can be used as well.

(3) Color unevenness suppression method of colored plaster coating film
(3-1) Lime is a highly alkaline component with a pH of about 9.5 to 12.6. For this reason, lime-based stucco compositions are difficult to evenly color even when using alkali-resistant color pigments, and the formed colored stucco coatings also fade over time and fade over time. It tends to occur (see Experimental Examples 1-3). And that is considered to cause uneven color.

  (3-2) As described in (1-37) above, the coloring method of the plaster composition of the present invention described in (1) can be effectively used for suppressing the color unevenness of such a colored plaster coating film. it can. Therefore, this invention provides the method of suppressing generation | occurrence | production of a color nonuniformity about the colored plaster coating film which has lime as a main component from another angle.

  (3-3) The said method can be achieved by employ | adopting the method explained in full detail in (1) as a coloring method of the water-containing plaster composition used for formation of a colored plaster coating film. Specifically, it can be carried out by coloring a plaster composition containing lime, a white pigment, a binder, and water using a color pigment. In other words, the present invention can be carried out by forming a coating film with a water-containing colored plaster composition colored by preparing lime, a white pigment, a color pigment, a binder and water. Thus, a colored plaster coating film having no color unevenness can be formed, and the occurrence of color unevenness can be significantly suppressed by suppressing the uneven color fading caused by the color skip occurring over time.

  (3-4) Types of lime, white pigments, color pigments, and binders used in the preparation of the water-containing colored stucco composition used for coating film formation, the proportion of water, the proportion of water and the method of blending are described above. (1) of (see (1-3) to (1-14) etc.). Moreover, about the other component which can be mix | blended with a water containing colored plaster composition, the thing similar to the description of the above-mentioned (1) can be used (refer to (1-15)-(1-35)).

  (3-5) Also, the method for applying the water-containing colored stucco composition is not particularly limited, and the usual methods used for coating materials and paints [brush coating, roller coating, spray coating (airless gun, air coating) Spray)] can be used as well.

  (3-6) Although not limited by theory, the color unevenness suppressing effect of the colored plaster coating film according to the present invention includes water used for construction by coloring based on a mixture of lime and white pigment. The stucco composition can be uniformly and stably colored, and the color pigment liberation (color skipping) that can occur when the colored stucco coating formed thereby is dried and with time transpiration is significant. It can be inferred that this is due to the result suppressed.

  (3-7) The method of the present invention can be effectively used for forming a colored plaster coating film having a uniform color with suppressed color unevenness.

(4) Color skip control method of colored plaster coating film
(4-1) As described above, since lime is a strong alkaline component with a pH of about 9.5 to 12.6, the plaster composition containing lime as a main component uses an alkali-resistant color pigment. Even in this case, uniform coloring is difficult, and the formed colored plaster coating film also tends to cause color skipping (whitening) over time (see Experimental Examples 2 and 3). Such color skip causes uneven coloring when the colored plaster coating film is dried and over time. In addition, the whitening of the colored plaster coating film and the whitening of the coating film due to the color jumping (a phenomenon in which the white color of lime floats on the colored plaster coating film) is particularly noticeable when the water-containing colored plaster composition is overcoated. This is a cause of color difference in the case of repeated coating (Experimental Example 3).

  (4-2) As described in (1-37) above, the water-containing colored plaster composition colored by the method of the present invention described in (1) is effective in suppressing the color skip of the colored plaster coating film. Can be used. Therefore, this invention provides the method of suppressing the whitening of the coloring stucco coating by the color jump about the colored plaster coating film which has lime as a main component from another angle.

  (4-3) The said method can be achieved by employ | adopting the method explained in full detail in (1) as a coloring method of a water containing plaster composition. Specifically, it can be carried out by coloring a plaster composition containing lime, a white pigment, a binder, and water using a color pigment. In other words, the present invention can be carried out by forming a coating film with a water-containing colored plaster composition colored by preparing lime, a white pigment, a color pigment, a binder and water. Thus, according to the present invention, color difference that may occur between the undercoat surface and the topcoat surface even when coating is performed while successively painting, or when overcoating such as once and twice or repair coating is performed. (Especially, the color difference generated between the painted surface and the other surface) can be significantly suppressed.

  (4-4) The types and blending ratios of lime, white pigment, coloring pigment, and binder used in the preparation of the water-containing colored stucco composition used for coating film formation, the ratio of water, the blending method, etc. (1) of (see (1-3) to (1-14) etc.). Moreover, about the other component which can be mix | blended with a water containing colored plaster composition, the thing similar to the description of the above-mentioned (1) can be used (refer to (1-15)-(1-35)).

  (4-5) The coating method of the water-containing colored stucco composition is not particularly limited, and the usual methods used for coating materials and paints [brush coating, roller coating, spray coating (airless gun, air coating) Spray)] can be used as well.

  (4-6) Although not limited by theory, the effect of suppressing the color difference caused by the repeated coating of the colored plaster coating film according to the present invention is to color with a coloring pigment based on a mixture of lime and white pigment. The water-containing stucco composition used in the construction can be uniformly and stably colored, and the color pigment liberation (color jump) that can occur with water evaporation during drying of the formed colored stucco coating is significant. It can be inferred that this is due to the result suppressed.

(5) Stabilization method of colored stucco composition The water-containing stucco composition colored by the method of the present invention can be stably maintained by filling a water-resistant container and containing it in an airtight state.

  (5-1) Here, the container used to accommodate the water-containing colored plaster composition is essential to be water-resistant, but preferably has flexibility. Furthermore, in order to prevent the calcium hydroxide contained in the plaster composition from solidifying due to carbon dioxide absorption, it is preferable to have a carbon dioxide barrier property. Any container having carbon dioxide barrier properties may be used as long as it has carbon dioxide permeation resistance to such an extent that the water-containing colored plaster composition contained in the container is not adversely affected (solidified). For example, in addition to a normal paint container, a container made of a film or a sheet constituting a flexible container can be used by appropriately selecting the material and its thickness.

  (5-2) In the latter case, as carbon dioxide barrier materials, polyvinylidene chloride resin (PVDC), various (poly) vinylidene chloride coated films, ethylene vinyl alcohol films, ethylene-vinyl acetate copolymer ken (EVOH) coated film, polyester (especially PVDC coated polyester), nylon (especially PVDC coated nylon), polyvinyl alcohol, vinylon, vinylidene chloride, cellophane (lacquer coated cellophane, polymer coated cellophane), aluminum foil laminate film, silicon oxide, Synthetic resins such as vapor deposited films of inorganic substances such as aluminum oxide are known. In the present invention, a film having a carbon dioxide barrier property can be arbitrarily selected and used without any particular limitation. In general, when the water-containing colored stucco composition targeted by the present invention is stored in a water-resistant container in an airtight state and stored at room temperature (20 ± 5 ° C.) for at least one month, the internal stucco composition When hardening is not recognized, it can be judged that the said container has a carbon dioxide barrier property.

(5-3) Suitable containers, without being limited to the above ^{material, 200 g / m 2 / 24hrs} / atm (20 ℃, dry) and being composed of a film having the following carbon dioxide permeability It can be illustrated. Preferably ^{100 g / m 2 / 24hrs /} atm (20 ℃, dry) or less, more preferably ^{50 g / m 2 / 24hrs /} atm (20 ℃, dry) or less, more preferably 20 g / m ² / 24hrs / atm (20 ℃, dry) or less, more preferably ^{10 g / m 2 / 24hrs /} atm (20 ℃, dry) or less (ASTM D1434-58, thickness 25.4 .mu.m). Such a container having a carbon dioxide barrier property is a multilayer of two or more layers so as to adjust the thickness of a known gas barrier material, particularly a carbon dioxide permeation barrier material, or to include a laminate layer made of the material. Or it can achieve by preparing as a multilayer film.

  (5-4) Furthermore, the container preferably further has a water vapor barrier property in order to prevent the solidification due to the evaporation of moisture from the stucco composition accommodated therein and to enhance the stability. .

  (5-5) The water vapor barrier property only needs to have water vapor permeation resistance to such an extent that the plaster composition accommodated in the container is not adversely affected (dried and solidified). For example, in addition to a normal paint container, a container made of a film or a sheet constituting a flexible container can be used by appropriately selecting the material and its thickness.

  (5-6) In the latter case, as the water vapor barrier material, polyvinylidene chloride resin (PVDC), various (poly) vinylidene chloride coated films, moisture-proof cellophane (lacquer-coated cellophane, polymer-coated cellophane), polyester, PVDC-coated polyester , PVDC coated nylon, polyvinyl chloride, polyethylene (low density, medium density, high density, especially high density polyethylene), linear rhoden polyethylene, stretched polyethylene, unstretched polypropylene, stretched polypropylene, ethylene-vinyl acetate copolymer, ionomer, Synthetic resins such as aluminum foil laminated films and vapor deposited films of inorganic substances such as silicon oxide and aluminum oxide are known. In the present invention, a film having a water vapor barrier property can be suitably selected and used without particular limitation. In general, when the water-containing colored stucco composition targeted by the present invention is stored in a water-resistant container in an airtight state and stored at room temperature (20 ± 5 ° C.) for at least one month, the internal stucco composition If dry solidification is not observed, it can be determined that the container has a water vapor barrier property.

(5-7) Suitable containers include, but are not limited to, the above materials, and those composed of a film having a water vapor permeability of 40 g / m ² · 24 hrs (37.8 ° C, 90% RH) or less can do. The water vapor permeability is preferably 30 g / m ² · 24 hrs (37.8 ° C., 90% RH) or less, more preferably 20 g / m ² · 24 hrs (37.8 ° C., 90% RH) or less, and even more preferably 10 g / m ^2. m ² · 24hrs (37.8 ℃, 90% RH) or less (ASTM E-96, thickness 25.4μm). Such a water vapor barrier property is achieved by adjusting the thickness of a known water vapor barrier material or by preparing a film as a multilayer or multilayer film of two or more layers so as to include a laminate layer made of the material. Can do.

  (5-8) Further, a container suitable as a container used in the present invention has water resistance, and preferably has flexibility, more preferably carbon dioxide barrier property and water vapor barrier property. Such a container may be composed of a single layer film composed of one kind of resin, or may be composed of a multilayer or multilayer film having a laminated structure (laminate layer or coat layer) of two or more kinds of resin films. There may be. In addition, it is not questioned whether it is a non-stretched film or a stretched film (uniaxial stretching or biaxial stretching). Preferably, at least one surface is coated with a polyvinyl alcohol (PVA) resin (such as a PVA-coated biaxially stretched polypropylene film), and at least one surface is coated with a polyvinylidene chloride (PVDC) resin (such as a PVDC-coated biaxially stretched polypropylene film) , PVDC coated polyester film, PP / PVDC / PP, etc.), polyolefin unstretched coextruded multilayer film (PP / PE / PP, polyolefin (PE, PP, etc.) / Polyvinylidene chloride / polyolefin), etc. However, it is not limited to these.

  (5-9) In the above, an even more optimal container may be composed of a film made of a synthetic resin having excellent properties such as strength, impact resistance, pinhole resistance, heat sealability, or alkali resistance. preferable. Multilayer or multilayer films may be used to satisfy these different properties. In this case, it is preferable that at least the inner layer of the container has alkali resistance and heat sealability.

  (5-10) In particular, from the liquidity of the water-containing colored stucco composition contained in the container, it is preferable that the container used in the present invention has at least an inner surface that is in contact with the stucco composition having alkali resistance. For this purpose, a method using an alkali-resistant container, a method of coating an inner surface of a container such as a film or a can with an alkali-resistant resin, a method of employing an alkali-resistant resin film on the inner surface of the film, or the like can be used. Examples of the alkali-resistant resin include vinyl chloride, vinyl acetate, and urethane resin. Preferably, a homopolymer of vinyl polymer (for example, those having a weight average molecular weight of 20,000 or more are exemplified) or a copolymer and / or an alkali-resistant urethane resin (for example, having a weight average molecular weight of 100,000 or more is exemplified). In particular, polyvinyl chloride and vinyl chloride-vinyl acetate copolymers can be preferably exemplified. In the present invention, the alkali resistance means that dissolution or corrosion of the container film is not visually observed even when the content of the stucco composition as a content is put and left at room temperature for 3 months, preferably 6 months. More preferably, it is desirable to use one that can obtain alkali resistance in the following accelerated test.

(5-11) <Accelerated test for alkali resistance evaluation>
A 1N aqueous potassium hydroxide solution is placed in a water-resistant container, left in a thermostat at 50 ° C. for 6 hours, and then left at room temperature for 18 days. Then, the aqueous potassium hydroxide solution is taken out and the inner surface of the container is visually dissolved. Evaluate the presence or absence of corrosion.

  (5-12) In the case of a film, the thickness to be employed (the thickness of the container) is not particularly limited as long as the carbon dioxide barrier property and the water vapor barrier property are satisfied, but preferably 3 to 30 μm, more preferably Is 5 to 200 μm. If the thickness is less than 2 μm, the strength, impact resistance, pinhole resistance and carbon dioxide permeation barrier properties tend to be insufficient, and if it exceeds 300 μm, flexibility (flexibility) and transparency are insufficient. It is easy to become. More preferably, it is 10-100 micrometers, More preferably, it is 10-80 micrometers.

  (5-13) Transparency as a film is not particularly required, but the colored stucco composition contained in the contents is superior in weather resistance, so it is less affected by light, and the contents should be recognized from the outside. Therefore, it is desirable to have transparency. In this case, transparency means that the contents can be seen visually.

  (5-14) Furthermore, the container used in the present invention may be easily tearable so that it can be easily opened during use. Conventionally known techniques can be arbitrarily used as the easy tearing technique, for example, formation of V-notch or U-notch, use of tear tape, use of needle-like filler, formation of perforation, or fine scratches on the film surface. The method of attaching etc. can be illustrated. Further, as long as the above properties are satisfied, an easily openable material in which a uniaxially stretched polyolefin film is laminated on the intermediate layer of the film (for example, a three-layer laminate of biaxially stretched polyester film / uniaxially stretched polyolefin film / unstretched polyolefin film) Film etc.) can also be used.

  (5-15) The container used in the present invention may be provided with reclosing means such as a zipper at the opening.

(5-16) The method of filling and sealing the stucco composition in such a water-resistant container is not particularly limited, but preferably, filling is performed so that air is not mixed as much as possible at the time of filling, and then the filling port is heat sealed (bar seal, Examples thereof include a method of hermetic sealing (sealing) in accordance with an ordinary method such as heat fusion sealing, heat cutting sealing), impulse sealing, high frequency sealing, or ultrasonic sealing. In addition, as a method of filling so that air is not mixed as much as possible, for example, a method of filling under degassing conditions, vacuum conditions or N ₂ gas replacement conditions or filling a stucco composition into a container and then degassing the filling port The method of blocking can be illustrated.

  (5-17) Thus, the water-containing colored plaster composition filled and accommodated in a water-resistant container is in the form of such a so-called plaster package, and stably maintains a uniform state during preparation until the container is opened. be able to. In particular, the water-containing colored plaster composition can be stably maintained in a state in which content components such as solidification, water separation, and color separation are significantly prevented from being unevenly formed. After the container is opened, the contents are cured or solidified over time by contact with air, but can be prevented by sealing again so that air does not enter again. The water-containing colored plaster composition is preferably contained in the container at a dose that can be used up once or 2-3 times. Although it does not restrict | limit as this content weight, As an example, 0.5-5 kg can be illustrated. The example of the stucco package prepared using a flexible container as a container is shown in FIGS. Here, the water-containing colored plaster composition housed inside the container is preferably used as a coating material having a viscosity of at least 2,000 cps at 25 ° C., for example.

(6) Stucco package The present invention also provides a stucco package used for stabilizing the water-containing colored stucco composition described above.

  The plaster package body is a package body in which a water-resistant container is filled with a plaster composition containing lime, a binder, a color pigment, a white pigment, and water. The plaster package is color-separated and dried when the colored plaster composition prepared and toned in combination with a color pigment and a white pigment in addition to the main component lime is airtightly contained in a water-resistant container. The water-containing colored plaster composition can be stably held in a uniformly colored state without any inconvenience such as solidification (solid-liquid separation) due to.

  The content components of the plaster package, that is, the types and blending amounts of lime and binder used for the preparation of the plaster composition, the types and blending amounts of white pigments and coloring pigments, the ratio of water and the blending method are the same as described above (1) Can be used in the same manner (see (1-3) to (1-14) etc.). Moreover, about the kind of container which accommodates this plaster composition, and the method of accommodating, the thing as described in said (5) can be utilized as it is (refer to (5-1)-(5-17)).

  The water-containing colored plaster composition contained in the package is at least selected from the group consisting of a cationic hydrophilic polymer compound, a nonionic hydrophilic polymer compound, and a hydrophilic polymer compound having a hydroxyl group. One kind of compound can also be blended. This makes it possible to significantly prevent the occurrence of solid-liquid separation such as precipitation and water separation that can occur over time for plaster compositions containing lime, binders, color pigments, white pigments and water, and further contain water. The stability of the colored plaster composition can be maintained.

  The types and ratios of the cationic hydrophilic polymer compound, the nonionic hydrophilic polymer compound or the nonionic hydrophilic polymer compound having a hydroxyl group used herein are also as follows. Those described in (1) above can be used in the same manner (see (1-15) to (1-25)).

  In addition, the water-containing colored stucco composition contained in the container includes, as other components, the extender pigment, the thickener, the oil, the photocatalyst, the pigment dispersant, the wetting agent, the antifoaming agent, and the filler as described in (1). In addition, optional components such as a waterproofing agent, a coagulant, and a coagulation accelerator can be blended in the same manner (see (1-26) to (1-36)).

  According to the plaster packaging body of the present invention, a pre-prepared / already-colored color plaster coating material (in a state where the plaster composition containing lime, binder, white pigment, color pigment and water is uniformly colored ( Including a paint form). Further, at least one compound selected from the group consisting of a cationic hydrophilic polymer compound, a nonionic hydrophilic polymer compound and a hydrophilic polymer compound having a hydroxyl group is further blended as a component of the stucco composition. Therefore, solid-liquid separation (precipitation, water separation) that can occur due to storage can be significantly suppressed, and the color stucco composition containing the color pigment is stable without color separation in the form of a pre-prepared coating material or paint. Products can be supplied to the market.

The present invention includes the following inventions: Note that the “coloring method described in any one of items 1 to 6” described herein refers to the above-mentioned [Solving Problems] Meaning of the coloring method according to items 1 to 6 described in the section of “Means”.
Item 12. Item 7. A method for stabilizing a colored plaster composition, wherein the colored plaster composition colored by the coloring method described in any one of Items 1 to 6 is housed in a water-resistant container in an airtight state.
Item 13. Item 13. The method for stabilizing a colored plaster composition according to Item 12, wherein the colored plaster composition is degassed and sealed in a water-resistant container.

In addition, the following aspect is included in the stabilization method of the said colored plaster composition. Moreover, these aspects (a)-(j) can be used for the said stabilization method by combining one or more.
(a) The method for stabilizing a colored plaster composition according to item 12 or 13, wherein the lime is slaked lime.
(b) The method for stabilizing a colored plaster composition according to item 12 or 13, wherein an inorganic pigment is used as the white pigment.
(c) The method for stabilizing a colored plaster composition according to item 12 or 13, wherein titanium oxide is used as a white pigment.
(d) The method for stabilizing a colored plaster composition according to item 12 or 13, wherein an inorganic pigment is used as the coloring pigment.
(e) blending at least one compound selected from the group consisting of a cationic hydrophilic polymer compound, a nonionic hydrophilic polymer compound and a hydrophilic polymer compound having a hydroxyl group into the plaster composition, Stabilization method of colored plaster composition.
(f) The method for stabilizing a colored plaster composition, wherein a hydrophilic polymer compound having a nonionic hydroxyl group is added to the plaster composition.
(g) The above colored stucco composition, wherein at least one cellulose derivative selected from the group consisting of methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose is blended into the stucco composition. Stabilization method.
(h) The method for stabilizing the colored plaster composition, which is a method for stabilizing the color of the colored plaster composition.
(i) The method for stabilizing the colored plaster composition, wherein a carbon dioxide barrier container is used as the water-resistant container.
(j) A method for stabilizing the colored plaster composition, wherein a water vapor barrier container is used as the water resistant container.

  According to the coloring method of the present invention, uniform coloring of lime, which has been considered difficult in the past, is possible, and the stucco composition can be stably colored while suppressing color separation over time. Color separation due to uneven coloring and storage of the plaster composition is one of the causes of uneven color of the formed plaster coating film. For this reason, the coloring method of the plaster composition of this invention can be usefully used for formation of the colored plaster coating film without unevenness of color. Furthermore, according to the coloring method of this invention, the color jump of the colored plaster coating film considered to be the cause of the high alkalinity of lime, and the whitening by it can be suppressed significantly. The color skip phenomenon of the colored plaster coating film is remarkably recognized by water transpiration during drying of the colored plaster coating film and water transpiration over time associated with moisture absorption / release properties of the plaster. Therefore, the occurrence of a color difference caused by recoating the water-containing colored plaster composition and the color unevenness caused over time are considered to be caused by the color skip phenomenon of the colored plaster coating film. Therefore, the coloring method of the stucco composition of the present invention is useful for forming a colored stucco coating without color skipping, and suppresses the occurrence of color difference due to overcoating and the occurrence of uneven color over time after drying. Can be used effectively. In particular, according to the coloring method of the present invention, since it is possible to perform repeated coating without color difference, it is possible to provide a water-containing colored plaster composition capable of repair coating with a touch-up effect.

  As described above, the coloring method of the present invention is a pre-prepared product prepared by pre-adjusting a colored plaster material that has been prepared (prepared / toned) at the time of use in the conventional field, or a pre-prepared product containing water in advance. It can be used effectively to provide a stable state as a product, and when applied, it does not lose color, and even when it is overcoated, it forms a coating film of the desired color uniformly without color unevenness or color difference Can be used effectively.

  In addition, the method for suppressing the occurrence of color difference due to overcoating of the present invention is the color difference (color between the undercoat and the top coat) caused by coating or repair when coating using the water-containing colored stucco composition as a film-forming material. ) Can be effectively used for forming a colored plaster coating film having a uniform color (chromaticity, hue, color). That is, the method of the present invention can be effectively used for providing a water-containing colored plaster composition that can be repaired or overcoated.

  Furthermore, the method of suppressing the color skip of the colored plaster coating film of the present invention is to form a coating film having a desired color by suppressing whitening of the colored plaster coating film, and the color skip degree of the coating film by overcoating. In order to suppress the occurrence of color difference due to the difference in color, and further to suppress the occurrence of color unevenness due to the color jump over time of the colored plaster coating film, each can be used effectively. That is, the method for suppressing color skip of a colored plaster coating film of the present invention is useful for forming a colored plaster coating film having a uniform color (chromaticity, hue, color).

  Hereinafter, the contents of the present invention will be specifically described with reference to the following experimental examples and examples. However, these examples and the like are only one aspect of the present invention, and the present invention is not limited to these examples.

Experimental example 1
(1) The solid content of the stucco composition is dispersed in water by stirring the ingredients listed in Table 1 in a coating material blending mixer, and a water-containing colored stucco composition [color stucco coating material (viscosity of about 15,000 ~ 20,000cps (25 ° C) B-type viscometer; solid content of about 65 to 70%) (Examples 1-2, Comparative Example 1), and color plaster paint (viscosity about 1,000cps (25 ° C) B-type viscosity) Total; solid content: about 57%) (Example 3)]. Apply this uniformly to the smooth surface of the test plate (flexible plate, 500 × 200 × 3 mm) with scissors (Examples 1-2, Comparative Example 1) or brush (Example 3), and wait for 8 hours. A second coat or brush was applied to half of the coated surface. After the coating has dried, visually observe the painted surface once to observe the presence or absence of uneven color, and measure the color difference (color difference: ΔE (* ab)) between the painted surface and the painted surface once. And evaluated according to the following criteria.

[Whether there is uneven color of the coating film]
◎: No color unevenness Δ: Some color unevenness is observed ×: Color unevenness is recognized
[Evaluation of color difference of coating film]
A: ΔE (* ab) is 0.5 or less ○: ΔE (* ab) is greater than 0.5 and less than 1 ×: ΔE (* ab) is greater than 1.

  (2) The test plates coated above (each coated with the water-containing colored stucco compositions of Examples 1 to 3 and Comparative Example 1) were placed so that the colored coating surface was exposed to sunlight during the day. The sample was left for one week, and after one week, the presence or absence of uneven color on the colored plaster coating film surface was visually evaluated. In addition, evaluation of the presence or absence of color unevenness was performed by comparing and comparing the coating film surface during coating drying (after 8 hours from application) and the coating film surface after 1 week according to the following criteria.

[Presence or absence of uneven color in the colored plaster coating film]
Compared to the coating surface during coating drying,
A: Almost no color unevenness is observed Δ: Some color unevenness is observed ×: Color unevenness is observed

  The results are shown in Table 1.

  As shown in the results of Table 1, as compared with the colored plaster composition of Comparative Example 1 in which only a colored pigment is mixed with lime as a pigment, the colored plaster composition of the present invention containing a combination of a colored pigment and a white pigment, Since no uneven color occurred in the colored plaster coating film after coating and drying, it was confirmed that the colored pigment was uniformly dispersed and mixed (uniformly colored).

  In addition, it was found that the color difference due to the overcoating can be suppressed (touch-up property) by blending the color pigment and the white pigment in combination, and the overcoating and the repair coating can be performed without any color difference. Furthermore, the colored plaster coating film formed with the water-containing colored plaster composition colored by the method of the present invention does not cause color unevenness during coating drying, but also significantly suppresses the occurrence of color unevenness over time. It was confirmed that it was possible.

Experimental example 2
The ingredients listed in Table 2 were placed in a mixer for preparing a coating material and stirred to disperse the solid content in water, and a water-containing colored stucco composition (solid content of about 65.6% by weight) (Example 4 [invention 4 Composition] and Comparative Example 2 [Comparative composition]) were prepared. These were each uniformly coated with a brush on the smooth surface of a test plate (flexible plate, 150 × 70 × 3 mm), dried at room temperature, and the color of the dried coating film was visually observed and compared.

As a result, the comparative composition not containing the white pigment had a dark brown color compared to the composition of the present invention containing the white pigment in the state before the water-containing drying (wet coating film). After drying, it was noticeably whitened as compared to the dried coating film of the composition of the present invention, and it was observed that color skip occurred. The whitening phenomenon of the dry coating film of such a comparative composition was considered to be caused by the color skip caused by the transpiration of water based on the fact that lime is a strong alkali. From the results of the composition of the present invention, by coloring lime with a white pigment and a coloring pigment, the color jump caused by the strong alkali of the lime and the whitening of the colored plaster coating film can be significantly suppressed. I understood.

Experimental example 3
The ingredients listed in Table 3 were placed in a mixer for preparing a coating material and stirred to disperse the solid content in water, whereby a water-containing coloring composition (solid content of about 51% by weight) (Example 5 [invention composition) Product], Comparative Example 3 [Comparative Composition 3] and Comparative Example 4 [Comparative Composition 4]). These were uniformly applied with a brush to each surface of a test plate (flexible plate, 170 × 50 × 3 mm) previously coated with a titanium oxide sealer, and dried at room temperature (one coating) Construction side). After 4 hours, the same water-containing coloring composition was brushed on each half of the coated surface (twice coated surface). Furthermore, after making it dry at normal temperature, the same water-containing coloring composition was brush-coated each part of the 2 times coating surface (3 times coating surface). After the coating film was dried, the color (chromaticity, hue, color) of the first coated surface, the second coated surface, and the third coated surface was visually observed, and the presence or absence of a color difference was evaluated.

As a result, Comparative Composition 4 (excluding white pigment) using precipitated calcium carbonate instead of lime (calcium hydroxide) gradually darkens the color of the coated surface as it is applied twice and three times. In contrast, the comparative composition 3 (without white pigment) using lime is gradually whitened as the coating is repeated twice and three times. It was found that (whitening by overcoating). The whitening phenomenon caused by the overcoating of the lime composition (Comparative Composition 3) is caused by the color skip caused by the transpiration of water based on the fact that lime is a strong alkali, and is mainly composed of lime. It was considered to be a problem peculiar to colored stucco compositions. And such a color jump and whitening by it were thought to be the cause of the color difference generation | occurrence | production by the overcoating of a coloring plaster composition, and the color nonuniformity which generate | occur | produces with time. On the other hand, the colored plaster composition of the present invention (the composition of the present invention) in which a white pigment is blended with lime is significantly suppressed in color jumping and whitening, and is applied twice and three times by recoating. All of the coated surfaces had the same color (chromaticity, hue, color) as the one-coated surface, and no color difference was observed visually. From this, by coloring lime with a white pigment and a colored pigment, the color jump of the colored pigment caused by the strong alkali of lime can be significantly suppressed, and as a result, by overcoating that occurs peculiar to the colored plaster composition It was found that the occurrence of color difference and the color unevenness unique to the colored plaster coating film can be suppressed. In addition, the 1 time coating surface of the comparative compositions 3 and 4 was able to be finished without color unevenness similarly to the case where the composition of the present invention was used. This is considered to be due to the use of a test plate that had been precoated with a titanium oxide sealer in advance as a coating test plate.

  Also, carbon black was used instead of black iron oxide, and the other components were similarly used using colored stucco compositions (color pigments: red iron oxide, yellow iron oxide and carbon black) prepared in the same manner as in Example 5. As a result of experiments, the occurrence of color skipping and color unevenness was significantly suppressed as in Example 5.

Experimental Example 4
Solid ingredients are dispersed in water by mixing the ingredients listed in Table 4 into a coating material blending mixer and agitated to adjust to a water-containing colored stucco composition (viscosity about 15,000 cps (25 ° C) (B-type viscometer ); Solid content of about 66-67%) (Examples 6-7, Comparative Examples 5-7) were prepared. Next, 1 kg of each water-containing colored stucco composition prepared was water-resistant film back (Saran-UB # 158: Asahi Kasei Corporation: thickness 15 μm (ASTM D-3985), oxygen permeability 10 ml / (m ² .day .MPa) (20 ° C, 75% RH) (ASTM D-3985), moisture permeability 1g / (m ² .day) (38 ° C, 90% RH) (ASTM F-372)) It heat-sealed, deaerating to an airtight state, and used for the performance evaluation test shown below.

<Stability of water-containing colored plaster composition>
The water-containing colored stucco compositions of Examples 6 to 7 and Comparative Examples 5 to 7 (present invention coating materials 6 to 7 and comparative coating materials 5 to 7) housed in a film back were at room temperature (20 ± 5 ° C.). One month after storage, the content components were observed for the presence or absence of water separation (solid-liquid separation) and the presence or absence of color separation of the color pigment, and evaluated according to the following criteria.

[Presence or absence of solid-liquid separation]
◎: No water separation occurred Δ: Some water separation was observed ×: Water separation occurred clearly
[Presence of color separation]
A: No color separation occurs. Δ: Some color separation is observed. X: Color separation is apparent.

<Coating performance>
Each water-containing colored plaster composition-filled film back (colored plaster package) stored for 1 month at room temperature is opened, and the water-containing colored plaster composition (invention coating materials 6-7, comparative coating material) 5-7) was taken out on the iron plate. Stir this several times with a scissors, and then apply evenly to each smooth surface of the test plate (flexible plate, 500 x 200 x 3 mm) with scissors. After 8 hours, apply to the half of the coated surface for the second time. I painted the candy. After the coating has dried, visually observe the unevenness of the color of the once-painted surface, and measure the color difference (color difference: ΔE (* ab)) between the once-coated surface and the twice-coated surface. Evaluation was made according to the following criteria.

[Whether there is uneven color of the coating film]
◎: No color unevenness Δ: Some color unevenness is observed ×: Color unevenness is recognized
[Evaluation of color difference of coating film]
A: ΔE (* ab) is 0.5 or less ○: ΔE (* ab) is greater than 0.5 and less than 1 ×: ΔE (* ab) is greater than 1.

<Presence / absence of color unevenness of dry colored plaster coating>
The test plates coated above (coated with the present coating materials 6-7 and comparative coating materials 5-7, respectively) are placed so that the colored coating surface is exposed to sunlight during the day and left for one week. Then, after one week, the presence or absence of color unevenness on the colored plaster coating film surface was visually evaluated. In addition, evaluation of the presence or absence of color unevenness was performed by comparing the coating film surface during coating drying (after 8 hours of coating) and the coating film surface after one week according to the following criteria.

[Presence or absence of uneven color in the colored plaster coating film]
Compared to the coating surface during coating drying,
A: Almost no color unevenness is observed Δ: Some color unevenness is observed ×: Color unevenness is observed

  The results are shown in Table 4.

  From these results, it was found that the water-containing colored stucco composition containing the color pigment can stably disperse the color pigment without causing inconvenience such as color separation when the white pigment is used in combination. Moreover, even when the colored plaster composition of the present invention is stored in a state where water is blended, the colored plaster coating film formed by coating does not cause uneven color, and is colored uniformly and stably from this. It was confirmed (coloring stability). Moreover, from the color difference evaluation by overcoating, it was found that the colored plaster composition colored by the method of the present invention has a touch-up property and can be overcoated without color difference and color unevenness. Furthermore, it was confirmed that the colored plaster coating film formed using the water-containing colored plaster composition not only does not cause color unevenness during coating drying, but also can significantly suppress the occurrence of color unevenness over time. It was.

Experimental Example 5
The ingredients listed in Table 5 were put into a coating material blending mixer and stirred to disperse the solid content in water, and a water-containing colored composition (viscosity of about 15,000 to 20,000 cps (25 ° C.) B-type viscometer; solid (Contents of about 63 to 70%) (Examples 8 to 10) were prepared, and in the same manner as in Experimental Example 4, a water-resistant film back (Saran-UB # 158: Asahi Kasei Co., Ltd.) was filled and opened. The product was heat-sealed while being deaerated in an airtight state, and subjected to a performance evaluation test. The results are shown in Table 5.

Experimental Example 6
In the formulations of Example 6 and Comparative Example 5, the amount of lime was changed from 35% to 32% by weight, and the amount of aggregate was changed from 20% to 10% by weight. Prepared (Example 8 and Comparative Example 8 respectively). In addition, it prepared so that a viscosity might be set to 58,000 mP * s (20 degreeC, BH type | mold rotational viscometer, No. 7 rotor use, 10 rpm, 60 seconds) by mix | blending a thickener suitably. This was placed in a 100 ml capacity transparent measuring cylinder (height 15 cm) and sealed. In this state, one cycle of 0 ° C. for 6 hours and 50 ° C. for 6 hours (12 hours) was repeated for 24 cycles (12 days).

  As a result, the water-containing colored stucco composition of Comparative Example 8 showed a color float of the color pigment after the warm-and-cool cycle test, whereas the water-containing colored plaster composition of Example 8 of the present invention contained a warm-and-cool cycle. There was no change in appearance including color separation before and after the test. Furthermore, no change was observed even if it was allowed to stand at room temperature for 1 month thereafter, and it was maintained in a stable state.

It is a figure which shows an example of the plaster package of this invention. (A) is a general view, (b) shows a cross-sectional view when the package is cut along the AA ′ portion. It is a figure which shows an example of the plaster package of this invention. It is a figure which shows an example of the plaster package of this invention.

Claims (5)

A method for suppressing a color difference of a colored plaster coating film produced by overcoating a colored plaster composition, the method using a composition containing lime, a white pigment, a color pigment, a binder and water as the colored plaster composition . A method for forming a colored plaster coating film that suppresses the occurrence of a color difference due to overcoating, the method comprising overcoating using a colored plaster composition containing lime, a white pigment, a color pigment, a binder, and water. A method for forming a colored plaster coating film that suppresses the occurrence of a color difference due to overcoating, the method comprising overcoating with a colored plaster composition containing lime, titanium oxide, a color pigment, a binder, and water. The method according to any one of claims 1 to 3, wherein the colored plaster composition is formed by coloring a white pigment or titanium oxide in lime with a coloring pigment as a base. A colored plaster coating film formed by the method according to any one of claims 2 to 4, wherein generation of a color difference due to overcoating is suppressed.

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