JPS6032861A - Powdery pigment composition - Google Patents

Abstract

PURPOSE:The titled pigment composition which is diluted with water and applied to give a film showing high water resistance after drying without causing change in color, solidification or rust, containing pigment, powdery resin emulsion and a water-soluble high polymer. CONSTITUTION:(A) Preferably 5-75pts.wt. pigment (e.g., metallic powder pigment, inorganic pigment, etc.), and if necessary, 0-60pts.wt. loading pigment (e.g., alumina silicate, etc.) based on 100pts.wt. composition is blended with (B) preferably 20-60pts.wt. powdery resin emulsion (e.g., vinyl acetate resin, etc.), and (C) 1-20pts.wt. water-soluble high polymer (preferably CMC, dextrin, etc.), and, if necessary, preferably 0.2-1.5pt.wt. surface active agent (8-18HLB), to give the desired pigment composition. EFFECT:Paint containing metallic powder pigment is provided with water resistance. USE:Paint for posters.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powdered paint composition, and more specifically, after the paint film is diluted with water and dried, it becomes water resistant, and when used, it is dissolved with water and adjusted to a paste-like paint with a desired viscosity. It is something. However, since the coating film is not water resistant, it re-dissolves when it comes into contact with water and the coating surface becomes dirty, so it could not be used for posters etc. to be displayed outdoors. On the other hand, there are paste-like paints that use water-soluble resin emulsions such as acrylic acid ester resins, which become water-resistant after drying. , metal powder pigments such as brass powder cannot be used.

Good. This is because, in particular, when metal pigments are used, they have the disadvantage of causing rust.

The present invention eliminates these drawbacks. As the pigment used in the present invention, various pigments such as metal powder pigments such as powder, which have been conventionally used in paints, and other pearl pigments can be used. These pigments may be used alone or in combination at 3 to 3 parts per 100 parts of the composition.
80 parts by weight can be used, preferably 5 to 75 parts by weight (hereinafter, parts by weight are simply referred to as parts).

If the amount of pigment is too small, the color development of the paint will be poor, and if it is too much, the fixation of the pigment to the painted surface such as drawing paper will be poor.

In addition, in order to adjust the viscosity when the composition is dissolved in water and the adhesion force when applied as a pigment used in the present invention, calcium carbonate, silicic acid anhydride, or Extender pigments such as alumina silicate can be used.

The extender pigment can be used in an amount of 0 to 90 parts, preferably 0 to 60 parts, per 100 parts of the composition, but if it is in excess, the color development of the paint will be poor.

The powdered resin emulsion used in the present invention is used to impart fixability of the pigment to the coated surface and to impart water resistance to the coating film.

Powdered resin emulsion is simply powdered emulsion,
Commonly called emulsion powder or re-emulsified powder, etc., for example, a resin emulsion such as vinyl acetate is sprayed and dispersed in hot air or under reduced pressure, and then rapidly dried.
It is in the form of a powder with a particle size of about μ. This powder can be easily redispersed in water, and when the redispersion liquid dries, the film is water resistant and does not dissolve in water again.

These powdered resin emulsions include vinyl acetate resin emulsion, vinyl acetate/vinyl persate copolymer resin emulsion, vinyl acetate/acrylic acid ester copolymer resin emulsion, vinyl acetate/acid monomer copolymer resin emulsion, and ethylene/vinyl acetate copolymer resin emulsion. Examples include polymer resin emulsion.

More specifically, commercially available products include Movinyl Powter DM200 (vinyl acetate/vinyl persatate copolymer powder resin emulsion) and Movinyl Baugu M-1 (vinyl acetate powder resin) manufactured by Hoechst Synthetic ■. Examples include emulsion).

These emulsions contain 10 to 7 parts per 100 parts of the composition.
0 parts can be used, preferably 20 to 60 parts. If the emulsion is in excess, the color development of the paint will be poor, and if it is too little, the water resistance of the paint film and the fixing properties of the pigment will be poor.

The water-soluble resin used in the present invention is used to provide pigment fixability to the painted surface and to give the composition consistency when diluted with water. Cellulose resins such as methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, and hydroxyglobil cellulose, vinyl synthetic resins such as polyvinyl alcohol and polyvinylpyrrolidone, modified starches such as dextrin and enzyme dextrin, and natural polymers such as gum arabic, and various water-soluble materials. Polymers can be used. Among these, methylcellulose, carboxymethylcellulose, hydroxyglobilcellulose, polyvinylpyrrolidone, dextrin, enzyme dextrin, etc. can be preferably used. These water-soluble polymers can be used in an amount of 0.5 to 25 parts, preferably 1 to 20 parts, per 100 parts of the composition.

If the amount of water-soluble polymer is too low, the paint will lose its viscosity when diluted with water, and if it is in excess, the water resistance of the paint film will be poor.

In addition, in the present invention, in order to improve the water wettability and dispersibility of pigments when diluting the composition with water, if necessary, nonionic or naphthalene materials such as polyethylene glycol alkyl ether, sorbitan ester ether, etc. conventionally used in paints may be used. Using anionic surfactants such as sulfonic acid sorta-formalin condensate and albenzenesulfonic acid,
Of these, those with an HLB of 8 to 18 are desirable. The surfactant can be used in an amount of 0 to 2.0 parts, preferably 02 to 15 parts, based on 100 parts of the composition. If the activator is used in excess, the water resistance of the coating film will be poor and its penetration into the coating surface will be rapid.

Further, if necessary, preservatives such as sodium bistriacetate and bistri-n-butyrous tin oxide, and when using a metal pigment, a rust preventive agent such as benzotriazole are mixed and added. Furthermore, polyhydric alcohols such as ethylene glycol can be added by spraying onto the composition of the present invention.

There are various methods for producing the composition of the present invention, but for example, first, a predetermined amount of the pigment and, if necessary, an extender pigment are weighed and mixed uniformly in a mixing machine such as a mixer or a kneader.

Next, a solution of a surfactant dissolved or dispersed by heating in alcohol is added and thoroughly mixed, and then a predetermined amount of a powdered resin emulsion and a water-soluble resin are added and mixed again. The resulting mixture is pulverized to approximately 50 to 150 meshes using a pulverizer or the like to form powder paints. Alternatively, the powdered paint composition of the present invention is granulated using a granulator to obtain a granular paint.

The composition obtained in the present invention is stored in an airtight container such as a bottle, but since it does not come into contact with water during storage, there is no risk of discoloration due to chemical changes or rust due to solidified acid, and various pigments can be used. In addition, since the composition of the present invention diluted with water and applied exhibits strong water resistance after drying, it can also be used as paint for posters displayed outdoors. Also, the coating film will not change color during storage, and the solidified acid will not cause rust.

In particular, the present invention is significant in that it can impart water resistance to paints containing metal powder pigments such as gold and silver, which was previously impossible.

Hereinafter, the present invention will be explained in detail according to Examples.

Example 1 Bengara [manufactured by Mie Pigment ■] 32.0 parts Calcium carbonate 200 parts Alumina silicate 10 parts Movinyl powder DM200 30 parts [trade name manufactured by Hoechst Synthesis ■ Vinyl acetate/vinyl persate copolymer powder resin emulsion] Pinedex ≠1 [Enzyme dextrin manufactured by Matsutani Chemical Co., Ltd.] 78 parts Laurin [Product name: Sodium naphthalene sulfonate manufactured by Tsutsuichi Kogyo Seiyaku Co., Ltd.] 0.2 parts After putting the above into a mixer and mixing thoroughly, the obtained mixture was pulverized using a pulverizer, and then the pulverized product was put into a granulator and sized to a size of 100 mesh to obtain a brown colored composition of the present invention. The obtained composition was stored in an airtight container and left in a constant temperature and humidity chamber at a room temperature of 40 degrees and a humidity of 80% for one week. When it was checked, there was no phenomenon such as discoloration or solidification, and it showed good storage stability. The resulting composition was applied to thin drawing paper using a brush dipped in water. Next, the applied coating film was left indoors to air dry, and then immersed in water, but the coating showed good water resistance without being redissolved.

Example 2 Hansa Yellow 10 GC 0.1 Pigment Processing Row 3 Manufactured by Hoechst Synthetic ■ 8.0 parts Calcium carbonate 26.0 parts Movinyl Powder M-1 [Product name, vinyl acetate powder resin emulsion manufactured by Hoechst Synthetic ■] 50.0 -90 parts Rubiscol [trade name, polyvinylpyrrolidone manufactured by BASI'] io, (trade name IRP C-LC, hydroxyglopy cellulose manufactured by Nippon Sozo ■) 5.0 parts Nodipole 160 [trade name, Sanyo Chemical ■, polyethylene glycol, nonylphenyl ether, I (LB=1
5.21 1.0 part Example 3 Virichan CC, I Pigment Green 18 Oriental Pigment ■
700 parts Silicic anhydride 10 parts Movinyl Powder M-122, 0 parts) IPC-L 5.0 parts Noniball 400 [Product name, Sanyo Chemical ■, polyethylene glycol nonylphenyl ether, HLB=17.
8) 1.0 parts Example 4 Aureolin [C0 ■ Pigment Koro 40] 620 parts Alumina silicate 50 parts Movinyl powder DM200 30.0 parts Celogen 6
A [Product name, manufactured by Daiichi Kogyo Seiyaku ■, carboxymethyl cellulose] 2.5 parts Example 5 Gimpun AA-12 [C, 1 Pigment Metal, manufactured by Fukuda Kinzoku ■] 400 parts Movinyl Powder DM200 50.0 parts HP O −
L 4.5 parts Neugen EA141 [Product name, manufactured by Daiichi Kogyo Seiyaku ■, polyethylene glycol alkyl ether, HLB=
14.0) 1.5 parts The compositions of Examples 2 to 5 were also produced according to Example 1. Like the first example, the obtained compositions exhibited good storage stability without discoloration or solidification. The coating film also showed good water resistance after drying.

Procedural amendment July 270, 1982 Mr. Manabu Shiga, Commissioner of the Patent Office 2. Name of the invention powder paint composition 3. Person who makes corrections patent applicant 1-10-17 Nakamichi, Higashinari-ku, Osaka City Nouvelle Paint Institute Co., Ltd. 4. Date of amendment order Self-initiated 5. Number of inventions increased by amendment section 7. Contents of correction The detailed invention section of the specification is amended as follows.

・Page 1, lines 17-18 ``Water-soluble resin exhibiting a solution form such as'' is deleted.

・1st to 2nd lines from the bottom of the second page Correct "dissolved in water" to "diluted with water."

・Page 3, line 17 Correct "film" to "paint film".

・Page 3, line 18 Correct "redissolution" to "redispersion."

・Delete the 2nd and 3rd lines of the 4th page "Vinyl acetate/acid heptamer copolymer resin emulsion".

・Page 7, 2nd line Delete "sorting".

・Page 7, line 6 Correct "I will save it, but" to "If I save it."

・Page 8, line 11, correct "granulating machine" to "granulating machine" and "granulating" to "granulating".

・Page 8, line 18 Correct "redissolution" to "redispersion."

・Page 9, line 13 Page 10, line 2 and line 17 Delete "=".

Claims (1)

[Claims] A powdery paint composition comprising a pigment-colored powdery resin emulsion and a water-soluble polymer.