JPS62206097A - Aqueous paint composition for paper kraft - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Ryoizumi Yom and 1 The present invention relates to a water-based paint composition for paper crafts,
The aim is to dry quickly and create a colored finish with high gloss and excellent transparency without losing the texture unique to paper craft materials, and as a result, to significantly increase the added value of craft materials. The objective is to provide a water-based paint that can be improved.

In this specification, paper craft refers to items made using paper such as advertising paper, wrapping paper, recycled paper such as newspaper, art paper, etc. as a base material.

Paper craft materials have natural patterns and artificial non-uniformity, and therefore each paper craft item is unique in that it cannot be reproduced each time. It is required that a colored finish with high gloss and excellent transparency can be produced. Additionally, with the recent handmade boom, these finishes are often applied in households, so water-based and quick-drying finishes are desired from the viewpoint of flammability, solvent odor, and ease of cleaning painting tools. .

Various water-based finishing colorants have been developed, but none of these have all of the above-mentioned properties required for finishing paper crafts.

Steps to Solve the 4 Problems An object of the present invention is to provide an aqueous paint composition suitable for finishing paper crafts.

That is, the present invention contains a synthetic resin emulsion of 20 to 50 parts by weight in terms of solid content, and contains 0.05 to 10 parts by weight of a water-soluble dye per 100 parts by weight of the synthetic resin emulsion (solid content). The present invention relates to a water-based paint composition for paper craft characterized by the following.

As the synthetic resin emulsion used in the present invention, a wide variety of conventionally known emulsions can be used, such as acrylic to styrene-acrylic emulsions, vinyl chloride to vinylidene chloride-based emulsions, olefin-based emulsions, alkyd-based emulsions,
Examples include vinyl acetate type materials and organic-inorganic composite type materials.

Specific examples of acrylic or styrene-acrylic synthetic resin emulsions include Boncoat (manufactured by Dainippon Ink and Chemicals), Vinizol (manufactured by Daido Kasei Co., Ltd.), and Polytron [manufactured by Daido Kasei Co., Ltd.].
[manufactured by Asahi Kasei Industries, Ltd.], Yodozol (manufactured by Kanebo NSC), Movinyl [manufactured by Beki 21 ~ Synthetic Co., Ltd.], Almatex (manufactured by Mitsui Toatsu Chemical Co., Ltd.), Acryset (manufactured by Nippon Shokubai Kagaku Kogyo Co., Ltd.), etc. .

Examples of vinyl chloride or vinylidene chloride synthetic resin emulsions include Saran Latex (manufactured by Asahi Kasei Kogyo Co., Ltd.), Kurehatex (manufactured by Kenbetsu Kagaku Kogyo Co., Ltd.), and Aron L.
[Manufactured by Toagosei Kagaku Kogyo Co., Ltd.], Zeon 151 (B, F,
(manufactured by Gutdrich), etc.

Specifically, the olefin-based synthetic resin emulsion is Picopale emulsion (Etsuso S.

A, F, manufactured by the company], etc.

Specific examples of alkyd-based synthetic resin emulsions include Boncoat CD-520 (manufactured by Dainippon Ink and Chemicals) and Aloron 580 (manufactured by Nippon Shokubai Chemical Industries, Ltd.).

Examples of vinyl acetate synthetic resin emulsions include Boncoat 2000 series, 6000 series, and 9000 series (manufactured by Dainippon Ink & Chemicals), Movinyl DM series (manufactured by Hoechst Gosei Co., Ltd.), Yodozol VC series, and CD series (Kanebo Co., Ltd.). (manufactured by NSC), etc.

Examples of organic-inorganic composite synthetic resin emulsions include Boncourt DV series [manufactured by Dainippon Ink & Chemicals Co., Ltd.] and Movinyl DM series [manufactured by Hoechst Gosei Co., Ltd.].
etc. can be exemplified.

Furthermore, in the present invention, a multilayered synthetic resin emulsion can also be used as the synthetic resin emulsion. In order to improve the physical properties of the synthetic resin emulsion film, this multilayered synthetic resin emulsion is produced by changing the composition ratio of the heptads constituting the core and shell within the same particle, even if the monomer composition is the same. A multilayer structure is formed intermittently or continuously so that a soft monomer polymer is formed in the shell (inside) and a hard monomer polymer is formed in the shell (outside). Regarding such a multilayered synthetic resin emulsion, for example, Japanese Patent Publication No. 51-465
It is described in detail in 55@ publication, Japanese Patent Publication No. 55-30731, etc. The emulsion obtained by either a stage feed emulsion polymerization method or a power feed emulsion polymerization method is effective in the present invention.

Specific examples of the multilayered synthetic resin emulsions include Movinyl 934 (manufactured by Hoechst Gosei Co., Ltd.), Yodozol 2D-212 (manufactured by Kanebo NSC), Boncourt EC825 (manufactured by Dainippon Ink & Chemicals), and Polytron E800 (manufactured by Dainippon Ink & Chemicals). [manufactured by Asahi Kasei Kogyo Co., Ltd.] etc. If the above-mentioned synthetic resin emulsion with a multilayer structure is used as the synthetic resin emulsion, a non-adhesive coating film will be formed on the surface to be coated when the resulting water-based coating composition is applied. It also has the advantage of imparting flexibility and stain resistance to the film.

The amount of the synthetic resin emulsion to be blended into the aqueous coating composition of the present invention is 20 to 50% by weight in terms of solid content. The amount of synthetic resin emulsion is 20% by weight.
If the amount is less, even if the water-based paint composition is used, glossiness,
It is inferior in terms of transparency, vivid coloring, etc., and is not practical. On the other hand, when the amount of synthetic resin emulsion blended exceeds 50w%, the amount of water in the water-based paint composition becomes relatively small, and the solubility of the water-soluble dye blended in the composition decreases. It is necessary to reduce the amount of the dye blended from the viewpoint of stability, etc., and there are problems in terms of vivid coloring, color range, coloring power, etc., and the high viscosity of the composition makes it difficult to paint. Leveling property of film after painting (degree of brush marks)
inferior to, and impractical. Therefore, in the present invention, the above-mentioned synthetic resin emulsion is added to the composition of the present invention in terms of solid content.
It is particularly suitable to mix 40% by weight.

The particle diameter of the synthetic resin emulsion used in the present invention is not particularly limited, but is preferably 0.1 μm or less, particularly about 0.05 to 0.1 μm. If the particle size of the synthetic resin emulsion is too large, the following problems will occur, which is not preferable. That is, if the synthetic resin emulsion is colored with, for example, a red dye, it will have a pink tone, but the film obtained by drying it will become transparent after the emulsion is formed.
It will show the original color tone of red dye. Since a transparent finish is essential for water-based paint compositions for paper crafts, it is important to note that the color tone of the water-based paint composition and the color tone of the finished film obtained using the composition are significantly different. That's not a good thing. In addition, if an ultrafine particle emulsion with the above particle size is used, various properties such as gloss, transparency, film-forming properties, and dispersibility of pigments when used together with paints and pigments of the resulting aqueous paint composition can be improved. This has the advantage that it is further improved.

Examples of ultrafine particle emulsions with particle diameters of 0.1μ or less, especially about 0905 to 0.1μ, include Japanese Patent Publication No. 46-2
Any of those described in Japanese Patent Publication No. 2343, Japanese Patent Publication No. 51-30887, Japanese Patent Publication No. 7451-1983, Japanese Patent Publication No. 17618-1988, etc. can be used. Specific examples include Movinyl 8010 (composite emulsion of colloidal silica and styrene/acrylic polymer, particle size 0.03μ, manufactured by Hoechst Synthetic Co., Ltd.)
, Movinyl 876 [styrene/acrylic emulsion, particle size 0.03μ, manufactured by the same company], Movinyl L-7
600G (styrene/acrylic emulsion, particle size 0.02μ, manufactured by the same company) and the like.

As the water-soluble dye to be incorporated into the composition of the present invention, a wide variety of conventionally known ones can be used, such as acid dyes, basic dyes, direct dyes, soluble vat dyes, disperse dyes, etc. Among them, it is especially water-soluble and its pH is 6.
-10 is preferred. Furthermore, even if the dye itself is not directly soluble in water, it is soluble in hydrophilic solvents such as methyl alcohol, ethyl alcohol, isopropyl alcohol, butyl cellosolve, ethyl cellosolve, and ethylene glycol, and as a result, Processing dyes that can be dissolved in water at any ratio to form a stable aqueous solution are also included in the water-soluble dyes of the present invention.

+” As specific examples of tt dyes, for example, Orien 1 to
Kagaku Kogyo Water Colors Yellow #1 (
C, 1, No. 19140), the same acid orange (
C, 1, No. 15510>, same red #3 (C, 1,
No. 27290>, the same Scarlet (C, 1, No.
, 16255>, same pink #2 (C.

I, No. 45410>, same blue #106 (C
.

1, No. 42045), Violet #1 (C.

1, No. 42640>, same black #R-455 (
C, 1, No. 50420), etc.

Specific examples of basic dyes include Water Colors Orange #11 (C
, 1, No. 11270>, same black 100-L
(C, 1, No. 35255), same black 187-
Examples include L (C, 1, No, 35255>).

Specific examples of direct dyes include Water Colors Blue #3 (C, 1, No.
, 74200>, etc.

Further, as a specific example of the above-mentioned processing dye, for example, Variosol Colors Yellow GEK1 manufactured by Orient Chemical Industry Co., Ltd.
Same orange ORK, same red 28, same blue BHK,
Examples include the same black SBK.

The amount of the water-soluble dye added is 0.05 to 10 parts by weight per 100 parts by weight of the resin solid content of the synthetic resin emulsion. If the amount of the water-soluble dye is less than 0.05 parts by weight, the coloring power and hiding power of the water-based paint composition will be poor, and the printing unevenness of the paper craft material will remain too clearly, resulting in poor colored finish. arise. On the other hand, if the amount of water-soluble dye added exceeds 10 parts by weight, the coloring power and hiding power of the composition will become too strong, causing problems such as impairing the texture of the paper craft and also reducing the gloss of the composition. The disadvantage is that properties such as durability and storage stability are reduced.

The aqueous coating composition of the present invention may further contain a pigment. The WA resin is not particularly limited and any conventionally known pigment can be used, but transparent pigments with fine and uniform crystal grains, good dispersibility, and little re-agglomeration are particularly preferred.

Examples of the pigments used in the present invention include azo pigments such as benzidine yellow (C, 1, No. 21090),
Alizarin Lake (C, I, No.

Mordant dye pigments such as 5800>, Rhodamine Lake B
(C, 1, No, 45170>), basic dye lake pigments such as methyl violet lake (C, 1, rib, 42535), peacock blue lake (C, 1, No, 4
2090), Alkaline Blue Lake (C, 1, No.
42750A, C, 1, No.

42770A>, phthalocyanine blue (C01, No. 74160>, phthalocyanine green (C, 1, NO.

74265), polychlorobrome copper phthalocyanine (C
, 1, No., 74265> and other phthalocyanine pigments,
Ultramarine blue (C, 1, No, 77007>, yellow iron oxide (C,
1, No, 77492>, red iron oxide (C, 1, No,
Examples include inorganic pigments such as 77491).

Among the pigments to be incorporated into the composition of the present invention,
Resin solid content of synthetic resin emulsion 2 per 100 square parts
The amount is preferably 0.01 to 2 parts by weight, particularly preferably 0.01 to 1 part by weight. If the amount of pigment blended is too large, it is not preferable because it tends to impair the transparency of the resulting aqueous coating composition.

By using the above-mentioned water-soluble dye and the above-mentioned pigment in combination, effects such as improving the hiding power of the water-soluble dye and making it possible to create a cloudy coloration are exhibited.

When blending pigments into the composition of the present invention, pigments have poor dispersibility and storage stability, so if the pigments are blended as they are, reaggregation will occur, so in advance, use surfactants, water-soluble dispersion resins, etc. It is desirable to use a color paste in which pigments are dispersed in water. Specific examples of the color paste include those using anionic or nonionic surfactants such as Disbirds Colors SD series [manufactured by Dainippon Ink & Chemicals Co., Ltd.], Rio Conch series [manufactured by Toyo Ink Manufacturing Co., Ltd.], and PSM. series [manufactured by Mikuni Shokuryo Co., Ltd.], and examples using water-soluble acrylic resin, such as Disbirds Colors SR series and HG series [manufactured by Dainippon Ink Chemical Co., Ltd.], and Rio Fast Color [manufactured by Toyo Ink Manufacturing Co., Ltd.]. can. If such a color paste is blended into the composition of the present invention, an aqueous coating composition with excellent dispersibility, storage stability, transparency, etc. can be obtained.

In the present invention, it is preferable to incorporate an inorganic binder into the composition of the present invention. As the inorganic binder, for example, colloidal silica can be preferably mentioned. A specific example of this colloidal silica is Snowtex 30.
Examples include Snowtex C and Snowtex N (manufactured by Yasan Kagaku Kogyo Co., Ltd.), Coloroid series (manufactured by Catalysts Kasei Kogyo Co., Ltd.), etc.If such an inorganic binder is blended into the composition of the present invention, the resulting water-based paint When the composition is applied, a non-adhesive coating film is formed on the surface to be coated, and the film has the effect of eliminating surface tackiness and imparting stain resistance.

The amount of the inorganic binder to be blended is usually 10 to 500 parts by weight, preferably 15 to 50 parts by weight in terms of solid content per 100 parts by weight of the synthetic resin emulsion.

In order to complete the fusion between the particles of the synthetic resin emulsion blended into the composition of the present invention at room temperature, it is desirable to blend a film-forming agent into the composition of the present invention. Examples of the film-forming aid include cellosolve, methylcellosolve, butylseronlube, carpitol, butylcarpitol, dibutylcarbyl, and benzyl alcohol. The amount of such a film-forming auxiliary agent to be blended is preferably such that the minimum film-forming temperature of the obtained aqueous coating composition is about 0 to 5°C. Specifically, butylcarpitol acetate is preferably blended into the composition of the present invention in an amount of usually about 4 to 6 parts per 100 parts by weight of the solid content of the synthetic resin emulsion having a minimum film forming temperature of 20°C.

The composition of the present invention further includes dispersants, preservatives, antifungal agents, antifoaming agents, chelating agents, and neutralizing agents commonly used in this field.
Thickeners, ultraviolet absorbers, etc. can be added as appropriate.

When producing the aqueous coating composition of the present invention, for example, a synthetic resin emulsion is heated at a circumferential speed of 3 using a disilver.
While stirring at a speed of 0 to 500 m/min, a film-forming agent, a preservative, an antifungal agent, an antifoaming agent, a slope stabilizer, etc. were gradually added to the mixture.
Stir for 0 minutes. To this, add a dye dissolved in water and an aqueous dispersion of a pigment if necessary under the same stirring conditions, and if necessary adjust the viscosity with a binder (No. 4 food cup, 25°C, 12 to 20 seconds). The aqueous coating composition of the present invention may be obtained by deaerating the mixture.

When using the aqueous coating composition of the present invention, the composition of the present invention can be freely applied to the object to be coated using, for example, a brush, brush, or roller.

Furthermore, the composition of the present invention can be appropriately diluted with water and applied by dipping, air spraying, or the like.

Effects of the Invention The aqueous coating composition of the present invention is extremely suitable for finishing paper crafts. That is, the aqueous coating composition of the present invention has the following characteristics.

(1) Even if the paper craft material absorbs the water-based paint composition unevenly and is extremely uneven, if the finishing coating is performed using the water-based paint composition of the present invention, a uniform high gloss can be imparted to the entire paper craft.

(2) When the aqueous coating composition of the present invention is used for finishing coating, paper crafts can be provided with excellent water resistance, stain prevention properties, and stain removal properties.

(3) Even when finishing coating is performed using the aqueous coating composition of the present invention, the texture unique to paper craft materials is not impaired.

(4) It has sufficient hiding power to soften even if the paper craft material has noticeable color differences such as white, black, red, and yellow.

(5) Deep and bright coloring can be applied to paper craft materials.

(6) Since the aqueous coating composition of the present invention is aqueous and dries quickly at room temperature, there are no problems such as flammability, solvent odor, and cleaning of painting tools.

Back - Goichi 1 Examples are given below to further clarify the present invention.

Example 1 A water-based coating composition is obtained by mixing a predetermined amount (heavy portion) of each component shown in Table 1 below.

Each of the compositions obtained above was examined for gloss, leveling, and painting workability according to the methods shown below. The results are also shown in Table 1.

(1) Gloss Each composition obtained above was applied twice to calendar art paper at a rate of 0.6 cx/dm2 using a brush, and the gloss of the resulting coating film was evaluated according to JISK 5400 (60 degree specular reflectance). ). If the gloss is 80 or more ◎
, when the gloss is 75 to 80, it is rated O, and when the gloss is less than 75, it is rated X.

(2) Leveling properties Each of the compositions obtained above was applied to calendar art paper at a rate of 0.6 cJ/dm2 using a brush, and the degree of brushing was examined. 0 if there are almost no brush marks,
The case where the brush marks are sharp and many are recognized is designated as X.

(3) Painting workability Each of the compositions obtained above was applied to calendar art paper at a rate of 0.6 g/dm2 using a brush, and the brushing workability was examined. If the brushing is smooth, mark it as ○, and if the brushing is heavy, mark it as X.

The various components used in Table 1 are as follows.

Component A...Synthetic resin emulsion [Polytron A-6
5. Solid content 65%, manufactured by Asahi Kasei Industries, Ltd.] Component B...Water-soluble dye [acidic dye, Water Raze Red #2,
Manufactured by Orient Chemical Industry Co., Ltd.] Component C: Coating aid (butylcarpitol) Component D:
...Antifoaming agent [Formaster VL, manufactured by San Nopco Co., Ltd.] Component E...Water Table 1 Example 2 A water-based paint composition is obtained by mixing each component shown in Table 2 below in a predetermined amount (parts by weight). .

For each composition obtained above, the coating film properties (gloss, transparency, color clarity, tinting power, water resistance and water abrasion resistance), storage stability, hiding power, and paper craft finish appearance were determined according to the methods shown below. Find out.

The results are shown in Table 3.

(1) Glossiness Each composition obtained above was applied at 0.6Q/
The coating was applied twice with a brush at a ratio of dm2, and the gloss of the coated film was measured in accordance with JIS K5400 (60 degree specular reflectance).

If the gloss is 75 or more, O1 If the gloss is less than 75, X
shall be.

(2) Transparency 0.60/d of each composition obtained above relative to newspaper
The coating was applied twice with a brush at a ratio of m2, and the transparency of the resulting coating film was visually determined.

The case in which there is no problem in reading the printed characters is O1, and the case in which there is a problem in reading the printed characters is in the case X.

(3) Vividness of color Each composition obtained above was applied at a rate of 0.60/d to newspaper.
The coating was applied twice with a brush at a ratio of m2, and the sharpness of the color of the resulting coating film was visually judged. The case where the color is bright is 01, and the case where the color is inferior in brightness is set as ×.

(4) Coloring power: 0.6 g/d of each composition obtained above on newspaper
The composition was applied twice with a brush at a ratio of m2, and the coloring strength of each composition obtained above was visually determined. A case where the coloring power is sufficient is rated O, and a case where the coloring power is poor is rated X.

(5) Water resistance: 0.60/d of each composition obtained above relative to newspaper.
The coating was applied twice with a brush at a ratio of m2, and 0.5 ml of water was dropped onto the obtained coating film, and the change in the film was examined after 3 minutes. A score of 0 indicates that almost no whitening, blistering, softening, etc. is observed, and a score of "X" indicates that whitening, blistering, softening, etc. are clearly observed.

(6) Water abrasion resistance Each composition obtained above was 0.69/d to newspaper.
IB twice with a brush at a rate of 1.0 m'', then drop 0.51119 water droplets on the resulting paint film, wipe off the water droplets with a cloth after 3 minutes, and check the degree of coloring on the cloth. The case where there is almost no coloration is marked as ○, and the case where the cloth is markedly colored is marked as X.

(7) Storage Stability 200 ml of each composition obtained above was placed in a 250 mQ bottle, and the external appearance was examined after storing it at room temperature for one month. A case where no precipitate is observed is marked as ○, and a case where a significant amount of precipitate is observed is marked as ×.

(8) Concealment power (a) Concealment rate: Based on JIS K 5663.

However, the application amount of each composition is 0.6g/ dm2. Apply two coats with a brush.

(b) Visual Concealment Crab The same panel on which the above concealment rate test was conducted is visually determined. The case where the concealing power is clearly recognized is ◎, the case where the concealing power is slightly recognized is O, and the case where there is no concealing power at all is designated as X.

(9) Appearance of finished paper craft Each of the compositions obtained above was applied to 17rfJj paper at 0.00%.
Painted twice with a brush at a ratio of 60/dm2, and once at room temperature.
The finish of the paint film after drying for a period of time is visually determined. O for cases where the material has a good texture and a suitable concealing power.
And when the texture is not recognized due to overexposure or excessive invading of the base material, it is evaluated as ×.

The various components used in Table 2 are as follows.

Component A...Synthetic resin emulsion [Boncourt EC-
825, solid content 55%] Component B: Water-soluble acidic paint mahogany (Water Colors Red #2: Yellow #1: Black BRC-49: 49: 2
(mixed in weight ratio) Component C: Film-forming aid [mixture of butyl cellosolve: butyl rubitol acetate-2=3 (weight ratio)] Component D: antifoaming agent (Nopco 8034L, San Nopco,
Component E: Preservative [Pulltop 33, manufactured by Shikinichi Yakuhin Kogyo Co., Ltd.] Component F: Slope stabilizer (ethylene glycol) Component G
...Chelating agent [ethylenediaminetetraacetate, 4Na salt] Component H...Water Table 2 Table 3 Table Example 3 A water-based paint composition is prepared by mixing a predetermined amount (by weight) of each component shown in Table 4 below. get.

Each of the compositions obtained above was examined for coating film properties (gloss, transparency, color clarity, water resistance, and water abrasion resistance), storage stability, and paper craft finish appearance according to the methods shown below. These evaluation methods are the same as those in Example 2. Regarding transparency, those with extremely excellent transparency were evaluated as ◎, and for papercraft finished inkstones, those with slightly inferior hiding power were evaluated as Δ. The results are also shown in Table 4.

Component A...Synthetic resin emulsion [Movinyl 790
0G, particle size 0.02μ, solid content 35%] Component B... Colloidal silica (Snowtex 30,
Solid content 30%, manufactured by Nissan Chemical Industries, Ltd.] Component C: Water-soluble dye (Water Colors Red #2, manufactured by Orient Chemical Industry Co., Ltd.) Component D: Water-soluble dye [Water Colors Brown #15, Orient Chemical Industry Co., Ltd.] Manufactured by Kogyosha] Component E...Pigment [Riofast Color Brown R229, Pigment Valve 5
5%] Component F: Stabilizer [Amino Alcohol 2A, manufactured by Nippon Nyukazai Co., Ltd.] Component G: Water Table 4

Claims (4)

[Claims] (1) Synthetic resin emulsion has a solid content of 20 to 50
The synthetic resin emulsion (solid content) contains 10% by weight.
1. A water-based paint composition for paper craft, comprising 0.05 to 10 parts by weight of a water-soluble dye per 0 parts by weight. (2) The composition according to claim 1, wherein the synthetic resin emulsion has a particle size of 0.1 μm or less. (3) Claim 1 or 2 in which a pigment is blended
The composition described in Section. (4) The composition according to claim 3, wherein the amount of pigment blended is 2 parts by weight or less per 100 parts by weight of the synthetic resin emulsion (solid content).