JPS62235371A - Deodorizing paint and deodorizing sheet produced therefrom - Google Patents

Abstract

PURPOSE:To obtain the titled paint useful for the coating of various food containers and as a raw material of deodorizing sheet for food packaging, by using a zinc compound and an aromatic polycarboxylic acid (salt) as deodorizing components and compounding the components to a binder resin and a liquid medium. CONSTITUTION:The objective paint is composed of a deodorizing component, a binder resin and a liquid medium. The deodorizing component is composed of (A) preferably 10-90pts.(wt.) of a zinc compound [preferably zinc white (zinc oxide) or zinc carbonate] and (B) preferably 90-10pts. of an aromatic polycarboxylic acid (preferably trimellitic acid) or its salt. A deodorizing sheet can be produced by applying and/or impregnating the paint to a substrate sheet and drying the paint.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a deodorizing paint and a deodorizing sheet using the same. The present invention relates to a deodorizing paint and a deodorizing sheet that are useful in terms of deodorization.

(Prior Art) Conventionally, various foods, especially foods with strong aromas or odors, and other articles have been packaged using non-ventilated containers such as metal, plastic or glass caps.

In the case of a cylinder, a non-breathable packaging sheet (for example, aluminum foil or plastic sheet) is mainly used. Furthermore, various deodorizing agents are used in places where odors tend to accumulate, such as the interior of a car, a toilet, and a refrigerator.

(Problems to be Solved by the Invention) Various containers or packaging sheets used for conventional packaging of foods, etc. such as those listed in L. This prevents the aroma or odor of the contents from evaporating outside! However, all of them are more expensive than general packaging sheets. In addition, if the contents require air permeability in packaging, such as fresh food, conventional containers and packaging sheets that do not have air permeability cannot be used; It is powerless to prevent food aromas or odors from leaking outside, or from external aromas or odors transferring to internal food. Furthermore, it is not desirable from the aesthetic point of view or from the standpoint of space to place the deodorizer in a container in the interior of a car or elsewhere.

Therefore, as packaging materials for various foods, there is a strong demand for packaging sheets that are breathable to the outside but block only fragrance or odors, and for deodorizers that do not cause discomfort indoors.

As a result of intensive research in order to meet the above-mentioned demands, the present inventors have discovered that when applying a specific material to a general packaging sheet, packaging container, or other article, it is possible to meet such conventional demands. The present invention was completed by discovering that it is possible to do this.

(Means for Solving the Problems) That is, the present invention provides a deodorizing paint comprising a deodorizing component, a binder resin, and a liquid medium, in which the deodorizing component is -IF.
The present invention provides a deodorizing paint characterized by comprising a ship compound and an aromatic polycarboxylic acid or 31 thereof, and a deodorizing sheet obtained by applying and/or impregnating the paint onto a material sheet and then drying it.

The main feature of the present invention is that the above-mentioned In as a deodorizing component;
A combination of a lead compound and an aromatic polycarboxylic acid or a salt thereof is used, and one point is that an organic or inorganic liquid medium is used as the liquid medium.

That is, it is known in the prior art to use ferrous salts as a deodorizing component of deodorizing agents, but when such ferrous salts are made into paints, they are reactive with the binder resin in the paints. It has the disadvantage of causing the paint to gel.

Further, when the binder resin of the paint is a vinyl chloride resin, dechlorination of the vinyl chloride resin is promoted after the coating film is formed.

It has the disadvantage of deteriorating the paint film. In addition, various types of paper,
When applied and/or impregnated onto plastic sheets, woven fabrics, non-woven fabrics, or composites thereof, and heated and dried, the ferrous salt changes color and colors the 75 material sheets brown, reducing the deodorizing effect. At the same time, the commercial value of sheets, especially sheets with various types of printing, is significantly reduced.

In the present invention, by using a zinc compound instead of such a ferrous salt and using an aromatic polycarboxylic acid or a salt thereof, or a combination of both, the amine-based malodorous components alone can be removed. It is also effective in deodorizing sulfur-based malodorous components, and there is no brown discoloration during drying. Combined with the deodorizing effect of aromatic polycarboxylic acids or their salts, the unique deodorizing effects of each compound are similar. It was discovered that -1- exhibits the deodorizing effect.

The individual deodorizing components used in the present invention are all known compounds, and the zinc compounds include various lead-resistant compounds, such as zinc oxide, 11M lead sulfate, zinc chloride, zinc phosphate, zinc nitrate, Inorganic zinc compounds such as zinc carbonate, zinc acetate, zinc oxalate, lead IIF citrate, zinc fumarate, zinc formate, and other organic 11F lead salts can be used, but particularly preferred are 11F lead 1 (11F lead oxide) and It is zinc carbonate.

The aromatic carboxylic acid used in the present invention or its) 1 is, for example, phthalic acid, terephthalic acid, isophthalic acid, trimellitic acid, 1,2,3-benzenetricarboxylic acid,
1,2.3-benzenetricarboxylic acid, pyromellitic acid, benzenehexacarboxylic acid, naphthalenedicarboxylic acid, naphthalenetricarboxylic acid, naphthalenetetracarboxylic acid, diphenyltetracarboxylic acid, azobenzenetetracarboxylic acid (or their anhydrides or trimellitic acid or its salt is particularly preferred in the present invention.

The deodorizing component made of a zinc compound and an aromatic polycarboxylic acid or its salt as described above has a very important ratio of use. part, the aromatic polycarboxylic acid or its salt is in a ratio of 90 to 10 ff<3 parts, and in such a combination and blending ratio, the objects of the present invention are best achieved.

The deodorizing paint of the present invention can be obtained by mixing the deodorizing component as described above with a binder resin and a liquid medium.

As the binder resin, for example, acrylic resins, vinyl acetate m@, and other resins that are used as binder resins in various conventional natural and oil-based paints and printing inks are preferable, and these binder resins are f! %IIr
:q! It may be thermosetting or thermosetting.

As the liquid medium, wood, alcohol, ketone, ester, aromatic, aromatic, other organic solvents, or mixtures thereof can be used.

The C degree of the binder resin may be any value, but is generally preferably about 10 to 30% by weight.

These binder resins may be in a dissolved state in a liquid medium, or may be in a dispersed or emulsified state.

In the present invention, it is obtained by dissolving or dispersing the above-mentioned deodorizing component in a liquid medium containing such a conventionally known binder resin so that the C degree is about 10 to 30%.

It is also natural that colorants and other paint additives may be added to the dye 1, pigments, etc. in the deodorizing paint of the present invention as described above.

The deodorizing sheet of the present invention is obtained by applying the deodorizing paint of the present invention such as (2) on one or both sides of a sheet made of general wrapping paper, plastic sheet, woven fabric, non-woven fabric, or a composite material thereof, and/or Obtained by impregnating and then drying.

The sheet used as a base material in the present invention is preferably one with air permeability such as paper, perforated plastic sheet, woven fabric, non-woven fabric, etc., but is not limited to these, and includes non-air permeable paper, Processed paper or plastic sheets may also be used.

There are no particular restrictions on the amount of deodorizing paint applied and/or impregnated, but generally the solid content is approximately 5 to 20 g/m'', and approximately 1 to 10 g in terms of aromatic polycarboxylic acid.
/m', and by setting it in such a range, an excellent deodorizing effect can be imparted to sheets such as wrapping paper, plastic sheets, woven fabrics, non-woven fabrics, etc., without losing their breathability.

Note that the deodorizing paint may be applied and dried by any conventionally known method.

(Action/Effect) l-I +-1B Pln4-L-a [I M 1
Layer self rII 1m B Iy rfl +, % -r
f! IC,M deodorizing sheets can block aromas or odors from external aromas or odors while retaining breathability, so they are suitable for packaging foods with strong aromas or odors. Packaging 1 food
It is very useful for such packaging purposes because the aromas or odors of these foods do not mix even in places such as refrigerators.

In addition, such deodorizing sheets can be used as wallpaper in car interiors, toilets, work rooms with a lot of odors, floor coverings, etc., without impairing the aesthetic appearance of those rooms, and eliminating discomfort on the first floor. The purpose of deodorization can be achieved without

Furthermore, the deodorizing paint and deodorizing sheet of the present invention are effective in deodorizing not only amine-based malodorous components but also sulfur-based malodorous components.

Next, the present invention will be explained in more detail with reference to Examples. In addition, parts or % in the text are based on 1 quantity.

Example 1 15 parts of zinc oxide, trimellitic acid and sodium trimellitate with a lit ratio of lo:3:l were added to ethyl acetate/
It was dissolved in 60 parts of isopropyl alcohol (3/1) and 25 parts of nitrocellulose/alkyd resin (5/1) to obtain a deodorizing paint of the present invention.

Next, this deodorizing paint was applied to kraft paper by gravure printing at a concentration of 8 g/ml and dried to obtain a deodorizing sheet of the present invention. The deodorizing properties of this deodorizing sheet were tested as follows.

Cut the deodorizing sheet into 50 pieces x 200 pieces, fold it in half, use double-sided tape to prevent the i# sound from coming out on the back side, and place it in a 300ml Erlenmeyer flask. Then, 10 microliters of 28% ammonia water was added, and the opening was sealed with paraffin to completely gasify. Thereafter, it was stored at 25°C, and after a certain period of time, the ammonia (ppm) in the flask was measured using a Kitagawa detector tube.The results were as follows. bei 1 ken
2500 2000 1300! IJul 30
00 2500 1500 Note: The blank is a sheet using a paint with no deodorizing component added, and the comparative example is an example in which ferrous sulfate was used alone.

-z own-8 -1- The deodorizing sheet was cut exactly 501 x 100 m.

Fold it in half and place it in a 300 ml Erlenmeyer flask with double-sided tape to prevent the back side from being affected. Next, add 1 ml of an 800 ppm sodium sulfide aqueous solution and 1 ml of sulfuric acid O0 to the flask. was sealed with paraffin, and the sulfurized water was completely gasified. Thereafter, the flask was stored at 25°C, and after a certain period of time, hydrogen sulfide (PP11) in the flask was measured using a Kitagawa detector tube.The results were as follows.

Upper bean amount l bean amount l bean amount blank 150 150 150 1j
3 Slight Non-Detection Comparison [1031 Note: The blank is a sheet using a paint with no deodorizing component added, and the comparative example is an example using ferrous sulfate alone.

In addition, bags were made from each of the above-mentioned sheets of the blank, the product of the present invention, and the comparative example, and thawed small fish were placed in the bags and left to stand. When the bags were opened after 3 days, it was found that the sheets of the product of the present invention While the odor inside the produced bag was slight, in the case of the blank, a strong odor was diffused.

In addition, while the comparative example was colored brown, the one of the present invention was hardly colored.

Examples 2 to 4 A deodorizing sheet of the present invention was obtained in the same manner as in Example 1 except that the following components were used, and the performance thereof was measured in the same manner as in Example 1, and the results were as follows.

11ヱMixture blank of 8:t, 5:0.5 of zinc carbonate, trimellitic acid and potassium trimellitate 400
0 4000 4000 Bemata 1j 2850 220
0 1400 le comparison J 3000 2500 15
00 Note that the comparative example was colored brown, whereas the present invention was hardly colored.

Blank 150 150 150 Mokugyo Otoko
l Not detected Not detected 1iJ11 1
0 3 l Note that while the comparative example was colored brown, the present invention was hardly colored.

Zinc oxide and naphthalene tricarboxylic acid 8.5:1
．． Mixture of 5 ammonia rtl Kaminowacho Tanto amount Shutantobi blank 4000 4000 4000 Koiban
3000 2500 1500 The sample of the comparative example was colored brown, whereas the sample of the present invention was hardly colored.

Blank 150 150 150 Mokugyo” intestine
l Not detected Not detected 10
3 1 The sample of the comparative example was colored brown, whereas the sample of the present invention was hardly colored.

Disaster 1A Mixture blank of 8.7:1゜3 of zinc carbonate and trimellitic acid 4000 4000 4000 Mokugyo 1 report
3100 2300 1400 Engineering father-in-law 3000
2500 1500 Note that the comparative example was colored brown, whereas the present invention was hardly colored.

Blank 150 150 150 Clothing Men's Service
Non-detection Non-detection Non-detection degree Mosquito 10
3 1 The sample of the comparative example was colored brown, whereas the sample of the present invention was hardly colored.

Example 5 20 parts of an 8:1.5:0.5 mixture of zinc chloride, naphthalene tricarboxylic acid and lithium naphthalene tricarboxylate were mixed with toluene/methyl ethyl ketone (1/1) 6
0 parts and 20 parts of a vinyl chloride copolymer to obtain a deodorizing paint of the present invention.

Next, this deodorizing paint was applied and impregnated onto a polyester/polypropylene nonwoven fabric by gravure printing at a concentration of 8 g/m', and dried to obtain a deodorizing sheet of the present invention.

The deodorizing sheet j- was subjected to a deodorizing test in the same manner as in Example 1, and the results were as follows.

Bra 7ri 4000 4000 4000 male intestines
27002ooo 14o.

Anti-glare 3000 2500 1500 The comparative example was colored brown, whereas the present invention was hardly colored.

Eno Eno 150 150 150 tree^1 intestine
Fine non-detection non-detection
10 3 1 The sample of the comparative example was colored brown, whereas the sample of the present invention was hardly colored.

Comparative Example 6 10g of the deodorizing paint of Example 1 was applied to the inner surface of cardboard paper.
/rn', dried, and used for transporting fresh fish, etc. ! 'F Fish's unique ammonia.

Trime 4-J and 7 tongue area a device h ■ 1σ complex 1. In the present invention, the blank is 1 to 5 in 111 parts of Izuo q.
The effect of l was 17.

Example 7 The deodorizing paint of Example 2 was applied to toilet paper tA [
During the process, it was impregnated with a roll coater at a rate of 5 g/rn' and dried to obtain the deodorized toilet paper of the present invention. When the toilet paper was used in toilets, it had a remarkable effect on removing odors from pumping toilets and flush toilets.

Applicant Dai [1 Seika Gyokugyo Co., Ltd. Agent: Patent Attorney Yoshi 1) Hiromi Katsu - ◇.

Claims (6)

[Claims] (1) A deodorizing paint comprising a deodorizing component, a binder resin, and a liquid medium, wherein the deodorizing component comprises a zinc compound and an aromatic polycarboxylic acid or a salt thereof. (2) The deodorizing paint according to claim (1), wherein the deodorizing component comprises 10 to 90 parts by weight of a zinc compound and 90 to 10 parts by weight of an aromatic polycarboxylic acid or a salt thereof. (3) The deodorizing paint according to claim (1), wherein the aromatic polycarboxylic acid or its salt is trimellitic acid or its salt. (4) A deodorizing sheet formed by coating and/or impregnating a base sheet with a deodorizing paint consisting of a deodorizing paint, a binder resin, and a liquid medium, and then drying the sheet, in which the deodorizing component is a zinc compound and an aromatic polycarboxylic acid or A deodorizing sheet characterized by consisting of the salt. (5) The deodorizing sheet according to claim (4), wherein the deodorizing component comprises 10 to 90 parts by weight of a zinc compound and 90 to 10 parts by weight of an aromatic polycarboxylic acid or a salt thereof. (6) The deodorizing sheet according to claim (4), wherein the aromatic polycarboxylic acid or its salt is trimellitic acid or its salt.