JP3841325B2 - Coloring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a colorant.
[0002]
[Prior art]
In Japan, the summer is hot and humid, and the winter is a dry climate. In Japanese houses, wall materials mainly made of wood, which has excellent moisture absorption and release properties, are often used to adjust the humidity in the room. . In recent years, in order to improve the interior decoration of a room, a wall material is painted with paint, varnish, or the like, or a pattern is printed on a wall material surface with printing ink at a factory production stage. However, when the wall material is painted with paint or the like, the coating film formed on the surface of the wall material hinders contact between the wall material and the outside air.
[0003]
On the other hand, the components contained in the paint and the printing ink (hereinafter referred to as a colorant when including them) are all synthetic products, and it is preferable to include those in nature.
In recent years, it has been required to efficiently remove indoor odors.
[0004]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to provide a colorant having excellent moisture absorption / desorption properties and deodorizing properties using a natural material.
[0005]
[Means for Solving the Problems]
The colorant according to the present invention has a resin component (excluding the polyamide resin) or vehicle (excluding the polyamide resin) and a particle size of 60 μm of 100 to 600% by weight based on the solid content of the resin component or vehicle. It is a moisture absorbing / desorbing and deodorizing colorant comprising the following charcoal powder having moisture absorbing / releasing properties and deodorizing properties (excluding activated carbon) as an essential component.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An essential component constituting the colorant according to the present invention is charcoal powder. The colorant is first paint, varnish, lacquer or the like (hereinafter abbreviated as paint), and second is printing ink. The main ingredients constituting the paint are a resin component and a colorant, and the main ingredients constituting the printing ink are a vehicle and a colorant. Hereinafter, these will be described sequentially.
[Charcoal powder]
The charcoal powder used in the present invention is, for example, pulverized wood chip carbide obtained by carbonizing a small piece of wood, that is, chip.
[0007]
As raw wood for wood chips, mainly coniferous materials such as cedar, Himalayan cedar and red pine are used, and red pine is particularly preferable. It is possible to use thin wood and waste materials that are difficult to use as wood products and inexpensive. Wood chip products that are industrially produced in large quantities can also be used as raw materials for pulp production and board building materials.
As a method for carbonizing wood chips, basically, a technique common to a method for producing ordinary charcoal can be used. Specifically, the method disclosed in Japanese Patent No. 2561433 can be applied.
[0008]
The obtained wood chip carbide has a porous structure having fine pores inside.
Wood chip carbide can be pulverized to obtain charcoal powder having an adjusted particle size. For the pulverization, normal pulverization means is employed.
Depending on the raw material of the wood chip, carbonization treatment, pulverization treatment, or particle size, the porous structure of the carbide is different, and the characteristics such as moisture absorption and desorption are also different. A wood chip carbide powder having desired characteristics can be selected in accordance with the purpose of use and required performance, or a plurality of types of wood chip carbide powder having different characteristics can be used in combination.
[0009]
The firing temperature of the wood chip carbide is not particularly limited, and may be set to about 600 ° C. or more, for example.
By performing a surface treatment with a coupling agent on the surface of the carbon powder, it is possible to improve adhesiveness with a resin component described later.
The carbon powder used in the present invention may be carbon powder obtained by carbonizing and pulverizing Bincho charcoal and pine nut shells.
[0010]
A pine nut shell is a pine-like plant material such as a red pine, a black pine, a pine pine, and is also called a pine cone or pine cone. Inside the shell, the original seed called narrow pine nuts is housed.
Such carbon powder made of pine nut shell has a deodorizing function, a humidity control function, a far-infrared emission function, an antibacterial function, a conductive function, and an organic matter adsorption / desorption function.
[0011]
In order to carbonize the pine nut shell, ordinary charcoal manufacturing technology is applied. Specifically, pine nut shells are put into a flat kiln or earth kiln for charcoal production, and fuel such as firewood is burned and heated to carbonize the pine nut shells. The carbonization temperature is usually preferably set to about 450 to 500 ° C.
The pine nut shell used for the carbonization treatment is preferably composed of only the shell without containing the original seed portion, but may contain the seed portion within a range not impairing the object of the present invention. To get only the pine nut shell, just split the pine nut shell and take out the seeds inside. Moreover, if the whole pine nut including the seed part is crushed and squeezed and the seed part is removed as an oil or liquid, only the shell part is obtained as a residue.
[0012]
Carbonized pine seed shells are crushed into carbon powder. The pulverization is preferably performed on the carbide in a dry state after the carbonization is completed. A normal pulverizer is used for pulverization. It is also possible to pulverize the pine seed shells to a certain size before carbonization, and further finely pulverize the carbon powder after carbonization.
The particle size of the carbon powder is adjusted to 100 μm or less, for example. Preferably, 60 μm or less, more preferably 30 μm or less, and further 10 μm or less can be used. The smaller the particle size, the larger the surface area per unit weight and the various properties based on the surface properties are improved. The average particle size of the pulverized carbon powder is preferably 100 μm or less, and more preferably 60 μm or less. Usually, the finer the carbon powder, the larger the surface area and the higher the deodorizing function. However, the labor for pulverization increases in order to obtain fine carbon powder. Practically, the average particle diameter of the carbon powder may be about 30 μm or more.
[Paint]
The colorant according to the present invention is first used as a paint. This paint contains charcoal powder as an essential component and includes a resin component and a colorant as main components.
[0013]
Examples of the resin component used in the paint include synthetic resins such as polyester resins, alkyd resins, epoxy resins, acrylic resins, and polyurethane resins, and one or more of them are used.
An organic or inorganic pigment or dye is used as the colorant used in the paint.
[0014]
The blending ratio of the carbon powder contained in the paint is not particularly limited, but preferably 1 to 1000% by weight with respect to the resin component (solid content), and more preferably with respect to the resin component (solid content). 100 to 600% by weight. There exists a possibility that moisture absorption / desorption property and deodorizing property may fall that the mixing | blending of carbon powder is less than 1 weight%. On the other hand, when the blending of the carbon powder exceeds 1000% by weight, the water resistance of the coating film obtained from the paint may be lowered.
[0015]
The paint can contain other components other than the carbon powder, the resin component, and the colorant. Examples of other components include a filler, an ultraviolet absorber, a thickener, an anti-aging agent, a plasticizer, a flame retardant, and a stabilizer. These other components may be used alone or in combination of two or more. The blending amount is not particularly limited.
[0016]
This paint may be either water-based paint or solvent-based paint.
[Printing ink]
Secondly, the colorant according to the present invention is used as a printing ink. This printing ink contains charcoal powder as an essential component, and contains a vehicle and a colorant as main ingredients.
The vehicle used in the printing ink, rosin, gilsonite, natural resins such as ester gum; and include phenolic resins, alkyd resins, petroleum resins, vinyl resins, A acrylic resin, nitrocellulose, a synthetic resin such as chlorinated rubber One or more can be used.
[0017]
The colorant used for the printing ink is the same as described above.
The blending ratio of the carbon powder contained in the printing ink is not particularly limited, but is preferably 1 to 1000% by weight with respect to the vehicle (solid content), and more preferably 100 to the vehicle (solid content). ~ 600% by weight. There exists a possibility that moisture absorption / desorption property and deodorizing property may fall that the mixing | blending of carbon powder is less than 1 weight%. On the other hand, when the blending of the charcoal powder exceeds 1000% by weight, the charcoal powder may easily fall off from the printing material.
[0018]
In general, a wax may be added to the printing ink as one of auxiliary agents for improving the abrasion resistance of the printed film. Examples of such wax include carnauba wax, beeswax, paraffin wax, microcrystalline wax, polyethylene wax, fatty acid amide, polytetrafluoroethylene, and the like, and one or more are used.
[0019]
The printing ink contains other additives (auxiliaries) as necessary. Colorants, vehicles, waxes and other additives may include those described above and those used in conventional printing inks. There is no particular limitation on the amount of the compound. For example, the colorant is contained in the printing ink at a rate of 5 to 40% by weight. The vehicle essentially contains a resin and a solvent (may be a resin solution or a resin dispersion), and if necessary, contains a fat or a plasticizer. As said resin, solvent, fats and oils, a plasticizer etc., what is used for the conventional printing ink is used, for example, resin 10-40 weight%, solvent 15-75 weight%, fats and oils 0-35 weight%, It is contained in the printing ink in a proportion of 0 to 10% by weight of plasticizer. The solvent may be an aqueous medium such as water or a mixed solution of water and an organic solvent, or may be an organic solvent. That is, the printing ink may be an aqueous ink or an oil-based ink. Good. Other additives are, for example, a viscosity modifier, a drying modifier, and the like, and are included in the printing ink at a ratio of 10% by weight or less.
[0020]
The printing ink can be produced by the same method as the conventional printing ink production method using each of the above components, and can be used for printing such as relief printing, planographic printing, flexographic printing, and screen printing. The substrate to be printed is not particularly limited, such as paper, plastic, metal, and cloth.
[0021]
【Example】
Hereinafter, examples and comparative examples of the present invention will be described. Prior to the examples, synthesis examples of emulsions will be described. In the following, “part” and “%” indicate “part by weight” and “% by weight”, respectively.
-Synthesis of emulsion-
A polymerization can equipped with a stirrer, a reflux condenser, a dropping device, and a thermometer was charged with 35.6 parts of water and 2.8 parts of sodium nonylphenyl ether polyoxyethylene sulfate and heated to 75 ° C. Under a nitrogen stream, 19.8 parts of styrene, 32.2 parts of 2-ethylhexyl acrylate, 4.7 parts of methyl methacrylate and 2.3 parts of acrylic acid, 5 parts of 5% aqueous ammonium persulfate solution and 5% hydrogen sulfite 5 parts of an aqueous sodium solution was added dropwise over 5 hours. Thereafter, a polymerization reaction was carried out at 75 ° C. for 2 hours, cooled to room temperature, and then adjusted to pH 8 using 25% aqueous ammonia to obtain an emulsion. The solid content concentration of this emulsion was 49.6%, and the emulsion viscosity was 80 cps (30 ° C.).
[0022]
-Example-
As the charcoal powder, charcoal powder having a particle diameter of 60 μm or less was obtained by pulverizing a charcoal powder produced by using the same husk of pearl pine nuts as a raw material and using the same apparatus and processing method as those of ordinary charcoal production. The carbonization temperature was 450-500 ° C.
Disper mill was prepared by using 104 parts of the emulsion obtained above, 6 parts of butyl cellosolve, 1 part of dispersant, 1 part of wetting agent, 10 parts of titanium oxide, 120 parts of carbon powder, 6 parts of 5% hydroxyethyl cellulose aqueous solution and 1 part of antifoaming agent. Was mixed thoroughly to obtain a paint. This paint was painted with roller buckets on the ceiling of a bathroom where condensation was frequently observed, and the state of condensation was observed for one month. However, no condensation was observed and the moisture absorption and release properties were improved. In addition, no abnormalities such as cracks and cracks were observed on the paint surface, and the paint surface was highly deodorized.
[0023]
-Comparative example-
In the said Example, the comparative paint was obtained like the Example except not mix | blending 120 parts of carbon powder. This comparative paint was painted on the ceiling of a bathroom where condensation was frequently observed with a roller bucket, and the condition of condensation was observed for one month, but the condition of condensation did not improve. Moreover, there was no deodorizing property of the coating surface.
[0024]
【The invention's effect】
The colorant of the present invention contains natural materials and has excellent moisture absorption / desorption properties and deodorization properties.

Claims (1)

Moisture absorption / desorption and deodorizing properties of resin component (excluding polyamide resin) or vehicle (excluding polyamide resin) and 100 to 600% by weight based on the solid content of resin component or vehicle and particle size of 60 μm or less A moisture absorbing / desorbing and deodorizing colorant comprising, as an essential component, charcoal powder having odor (excluding activated carbon).