JP3403214B2 - Method for producing a coating agent for scratches on glass containers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agent for applying scratch marks to glass containers such as fruit juice beverage bottles, soft drink bottles, beer bottles and the like.
And a coating agent according to the present invention.
The coating has a gloss, is homogeneous and has excellent appearance, the coating has good dryness, and the coating is washed away by dew condensation on the surface of the glass container. it is good shielding property without further excellent in emulsifying property, manufacturing of blur wound coating material of the glass container for obtained by dilution with water safety and working environment becomes easy to handle becomes good
Regarding the manufacturing method .

[0002]

2. Description of the Related Art At present, glass containers such as fruit juice beverage bottles, soft drink bottles, beer bottles, etc. are collected after use and repeatedly used. The surface of the will be scratched, the appearance will be impaired, and the commercial value will decrease.

Therefore, in recent years, various kinds of coating agents are applied to the surface of the glass container to shield the scratches and protect the aesthetic appearance of the glass container.

As this type of coating agent, a coating agent containing an alkoxy group-containing curable alkylpolysiloxane as a main component is conventionally known. Since this is a so-called solvent-diluting type coating agent that is diluted with a solvent such as alcohols, mineral oils, esters, etc., it is not only dangerous to catch fire, but also the working environment is bad, which makes handling difficult.

Therefore, conventionally, an emulsion-type or water-dispersion type coating agent containing liquid paraffin or silicone oil as a main component has been developed. However, this is inferior in appearance and dryness of the coating film, and in addition, the coating film is washed away by dew condensation, resulting in poor shielding property.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is, of course, that the coating film of the obtained coating agent has gloss and is homogeneous and has excellent appearance, and that the drying property of the coating film is excellent. is also good, and it as a coating film by condensation occurring on the glass container surface is flowed is has good shielding properties without further excellent in emulsifying property, work safety and because it is obtained by dilution with water The environment is good and handling is easy,
It is an object of the present invention to provide a method for producing a scratch-resistant coating agent for a glass container, in which the above-mentioned drawbacks of the known art are improved.

[0007]

In order to achieve the above-mentioned object, according to the present invention, a method for producing a scratch mark coating agent for a glass container is prepared.
In the manufacturing method, the coating agent is the component (A) general formula

Embedded image Polymers represented by R ₁ Si (OR ₂ ) ₃ (wherein R ₁ and R ₂ are each a methyl or ethyl group), or a plurality of different polymers, component (B) octamethyl One or more selected from the group of cyclotetracycloxane, decamethylcyclopentasiloxane and undecamethylcyclohexasiloxane, and three components (C) surfactants
Add 100 parts by weight of the component (A) to the component (B).
And the total amount of the component (C) 5 to 60 parts by weight, and the component
1 to 200 parts by weight of component (C) per 100 parts by weight of (B)
Blended in a ratio of 1 part to improve emulsification properties and diluted with water
It is also possible to improve the drying property of the coating film.
And are characterized .

The above general formula

Embedded image Compounds having R ₁ Si (OR ₂ ) ₃ (wherein R ₁ and R ₂ are each a methyl or ethyl group) are specifically methyltriethoxysilane, methyltrimethoxysilane, and ethyltriethylsilane. Ethoxysilane and ethyltrimethoxysilane. These compounds may be used alone or in combination with different ones, and a plurality of them may be easily polymerized in the presence of a dilute acid such as 0.1 to 0.01 N hydrochloric acid, sulfuric acid, sulfonic acid, and chloroacetic acid. To produce the component (A).
This component (A) is specifically, for example, methoxy group-containing methyl polysiloxane, methoxy group-containing ethyl polysiloxane, ethoxy group-containing methyl polysiloxane, ethoxy group-containing ethyl polysiloxane, ethoxy group-containing methyl ethyl polysiloxane, methoxy group. -Ethoxy group-containing methyl polysiloxane, ethoxy group-methoxy group-containing methyl ethyl polysiloxane, and the like. In the present invention, these components (A) are used alone or in combination.

The component (B) is octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane or undecamethylcyclohexasiloxane. In the present invention, these may be used alone or in combination.

Further, the surfactant which is the above-mentioned component (C) is specifically polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyethylene glycol fatty acid ester, sorbitan fatty acid ester, sorbit fatty acid ester, glycerin. Fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, propylene glycol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyoxy Ethylene alkylamine, polyoxyethylene fatty acid amide, sucrose fatty acid ester, fatty acid alkanolamide, etc. A. These (C) components are also
In the present invention, they are used alone or in combination.

The content of the above-mentioned components (A), (B) and (C) is 5 to 60 parts by weight based on 100 parts by weight of the component (A). , Preferably 5
~ 50 parts by weight. Further, the mixing ratio of the components (B) and (C) is 1 part by weight of the component (C) to 100 parts by weight of the component (B).
˜200 parts by weight, preferably 2 to 100 parts by weight.

[0012] This onset Ming above described (A), in addition to (B) and the component (C), further, the general formula as component (D)

Embedded image A branched (iso) fatty acid represented by CnH _{2n + 1} COOH (where n = 10 to 26, preferably 11 to 17) is used in any suitable amount,
For example, 3 to 13 parts by weight may be contained with respect to 100 parts by weight of the component (A).

Specifically, the isofatty acid is isoundecanoic acid (n = 10), isolauric acid (n = 11), isotridecyl acid (n = 12), isomyristic acid (n = 13),
Isopentadecyl acid (n = 14), Isopalmitic acid (n
= 15), isomalgaric acid (n = 16), isostearic acid (n = 17), isononadecyl acid (n = 18), isoarachidic acid (n = 19), isoheneicosanoic acid (n = 20),
Isobehenic acid (n = 21), Isotricosanoic acid (n = 22)
, Isolignoceric acid (n = 23), isopentacosanoic acid (n = 24), isoserototic acid (n = 25), isoheptacosanoic acid (n = 26) and the like. These components (D) are also used alone or in combination in the present invention.

The present invention was diluted to approximately 5 times the above ingredients with water
The resulting coating agent is a fruit juice bottle, a soft drink bottle,
It is used by applying it to a glass container such as a beer bottle with a cloth, sponge, felt, brush, belt or the like, drying and solidifying.

[0015]

The above-mentioned coating agent produced by the present invention is applied to a glass container and dried and solidified to form a dry coating film on the surface. This coating film has gloss, is homogeneous and has excellent appearance, and also has good drying property, and it is possible that the coating film may be washed away by dew condensation on the surface of the glass container. without it has good shielding properties, more excellent emulsifying properties, obtained by dilution with water, it is not necessary to use conventional solvents like, Therefore safety and working environment to handle becomes good It will be easy.

In particular, the drying property of the above-mentioned coating film is improved by using the cyclic silicone which is the component (B), and the coating film is dried by incorporating the component (D) in addition to the component (B). The property is further improved. Further, the above-mentioned emulsifiability is improved by using the surfactant which is the component (C). In this way, the onset Ming by using in combination with the surfactant component (B) as the component (C), in addition to the advantages of the above component (B), excellent emulsifying, this and it is possible to dilute in order water, becomes solvent-insoluble, and therefore safety and working environment is easy to handle becomes good.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to Examples. Example 1 Samples 1 to 36 shown in Table 1 were prepared, and an evaluation test regarding the appearance, drying property, emulsifying property and shielding property of the coating film was conducted on each of these samples, and the results are shown in Table 1. Components 1 to 7 in Table 1 are as follows. Component 1: Ethoxy group-containing methyl polysiloxane component 2: Methoxy group-containing methyl polysiloxane component 3: Ethoxy group-containing ethyl polysiloxane component 4: Methoxy group-containing ethyl polysiloxane component 5: Ethoxy group-containing methyl ethyl polysiloxane component 6: Methoxy Group / Ethoxy Group-Containing Methyl Polysiloxane Component 7: Ethoxy Group / Methoxy Group-Containing Methyl Ethyl Polysiloxane

These components 1 to 7 were synthesized as follows. That is, to 1 mol each of methyltriethoxysilane, methyltrimethoxysilane, ethyltriethoxysilane, or ethyltrimethoxysilane, or again
Mixture of 0.5 mol of methyltriethoxysilane and 0.5 mol of ethyltriethoxysilane, methyltrimethoxysilane
To each mixture of 0.2 mol and 0.8 mol of methyltriethoxysilane or 0.6 mol of methyltriethoxysilane and 0.4 mol of ethyltrimethoxysilane, 1 mol of distilled water was added dropwise in the presence of hydrochloric acid to obtain a uniform mixture. After becoming transparent
The temperature is raised to 81 ° C. and the mixture is refluxed for 1 hour. While distilling off the low-boiling substance, the temperature was raised to 130 ° C., and the mixture was aged under reduced pressure (400 mmHg) at a temperature of 130 ° C. for 1 hour to obtain the above-mentioned components 1 to 7, respectively.

The evaluation test was carried out by first preparing a soft drink bottle having a capacity of 200 ml and a beer bottle having a capacity of 633 ml, and then applying a diluted sponge of each sample in Table 1 diluted with water with a sponge to the bottles. , The appearance, the drying property, the emulsifying property and the shielding property of the coating film were tested as follows.

Appearance of the coating film: The above-mentioned diluted solution was applied to the above-mentioned bottle and left at room temperature for 3 days to dry and solidify, and then the appearance of the coating film was observed such as gloss and homogeneity of the film. Drying property: The above-mentioned diluted solution was applied to the above-mentioned bottle, left at room temperature for 3 days to dry and solidify, and the presence or absence of peeling of the coating film was confirmed by hand. Emulsification: Each sample was observed as it was diluted 5 times with water. Shielding property: Immediately after applying the above-mentioned dilution liquid to the above-mentioned bottle, fill the bottle with water at 10 ° C until it becomes full. Then, the bottle is placed in a constant temperature and humidity chamber at 25 ° C and 68% to cause dew condensation on the surface of the bottle. It was left as it was for 3 days, dried and solidified, and then it was visually observed whether or not a scratch on the bottle was visible. It means that the shielding property is so good that the scratches cannot be seen.

[0021]   Explanation of symbols in Table 1 [Drying property] [Appearance and emulsifying property of coating film] [Occlusion property]   ◎ ... Completely dry ◎ ... Very good ◎ ... No visible scratches   ○: Dry ○: Good ○: Almost no scratches are visible   △… Almost dry △… Slightly good △… Slight scratches are visible   ×: Not dry ×: Poor ×: Scratches are clearly visible

[0022]

[Table 1]

In Table 1, Sample Nos. 1 to 20 are coating agents according to the present invention, and from Table 1, these are excellent in appearance, drying property, emulsifying property and shielding property of the coating film. I understand. In particular, Sample Nos. 1 to 11 containing isomyristic acid or isostearic acid have extremely good drying properties.

Further, in Sample Nos. 33 to 36 in Table 1 in which neither the component (B) nor the component (D) was blended, the drying property was very poor, but even if the component (B) was not blended. , If instead of this, the component (D) is blended, sample No. 25-28
As shown in (3), the drying property is slightly improved although it is insufficient. Further, it can be seen from Table 1 that sample Nos. 21 to 24 and 29 to 32 in which the component (C) is not blended have extremely poor emulsifying properties.

On the other hand, in Sample Nos. 1 to 20 of the present invention, the components (B) and (C) are used in combination, and therefore, both the drying property and the emulsifying property are good. Moreover,
When component (D) is used in combination with these components, sample N
As shown in o.1 to 11, it can be seen from Table 1 that the drying property is remarkably good.

EXAMPLE 2 Ethoxy group-containing methylpolysiloxane as component (A), octamethylcyclotetrasiloxane as component (B), polyoxyethylenesorbit fatty acid ester as component (C), and isomyristic acid as component (D). As shown in Table 2, the total amount of the components (B) and (C) was changed with respect to 100 parts by weight of the component (A), the same evaluation test as in Example 1 was performed, and the results are shown in Table 2. It was shown to. The symbols in Table 2 are the same as those in Table 1. The amount of component (D) used is 7 parts by weight per 100 parts by weight of component (A).

[0027]

[Table 2]

From Table 2, the total amount of the components (B) and (C) used is in the range of 5 to 60 parts by weight, preferably 5 to 50 parts by weight, relative to 100 parts by weight of the component (A). I understand.

Example 3 As shown in Table 3, ethoxy group-containing methylpolysiloxane was used as the component (A), octamethylcyclotetrasiloxane was used as the component (B), and polyoxyethylenesorbit fatty acid ester was used as the component (C). , (A)
With respect to 100 parts by weight of the component, the total amount of the components (B) and (C) was changed, and the same evaluation test as in Example 1 was conducted.
The results are shown in Table 3. The symbols in Table 3 are the same as those in Table 1.

[0030]

[Table 3]

From Table 3, the total amount of the components (B) and (C) used is 5 to 60 parts by weight, preferably 5 to 50 parts by weight, per 100 parts by weight of the component (A). I understand.

Example 4 Ethoxy group-containing methylpolysiloxane as component (A), octamethylcyclotetrasiloxane as component (B), polyoxyethylenesorbit fatty acid ester as component (C), and isomyristic acid as component (D). Using. The total amount of these components (B) and (C) is 10 parts by weight per 100 parts by weight of the component (A), and the amount of component (D) is 7 parts by weight relative to 100 parts by weight of the component (A). It is a department. As shown in Table 4, the same evaluation test as in Example 1 was performed by changing the compounding ratio of the component (B) and the component (C), and the results are shown in Table 4. The symbols in Table 4 are the same as those in Table 1.

[0033]

[Table 4]

From Table 4, the blending ratio of the components (B) and (C) is 1 part by weight of the component (C) to 100 parts by weight of the component (B).
It can be seen that it is in the range of ˜200 parts by weight, preferably 2 to 100 parts by weight.

Example 5 The sample No. 1 in Table 1 used in Example 1 was diluted with water to 5 times as in Example 1. This diluted solution was applied to a bottle with scratches filled with contents by a usual manufacturing method during the manufacturing process, and the bottle was stocked in a warehouse for 2 days and then shipped. As a result of evaluating the appearance, drying property and shielding property of the coating film after transporting this product over a distance of 500 km, the coating film was completely dried and solidified, and scratches were completely shielded. It had a good coating appearance. Furthermore, when a monitor test was conducted on the finish of this product, satisfactory results were obtained for all the above items.

[0036]

According to the present invention as described above, the present onset Akira is obtained coating agent
The coating has a gloss, is homogeneous and has excellent appearance, and the drying of the coating is good, and the coating may be washed away by the dew condensation on the glass container surface. without and shielding is good and further an excellent emulsifying property, obtained by dilution with water safety and the working environment becomes favorable becomes easy to handle, it is practically useful inventions.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuji Akimoto 5-10-18 Higashi Gotanda, Shinagawa-ku, Tokyo Daisan Industry Co., Ltd. (72) Inventor Kenichi Nakazato 3-1 Yazaki-cho, Fuchu-shi, Tokyo Suntory Limited Musashino Brewery (72) Inventor Hideki Matsumasa 1-2-3 Moto-Akasaka, Minato-ku, Tokyo Suntory Co., Ltd. (56) Reference JP-A-3-131548 (JP, A) JP-A-3-70782 (JP, A) JP-A 64-62364 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C03C 15 / 00-23 / 00

Claims (3)

(57) [Claims] 1. A method for producing a scratch coating agent for a glass container.
In the above-mentioned coating agent, the coating agent is a compound represented by the general formula (A) : R ₁ Si (OR ₂ ) ₃ (wherein R ₁ and R ₂ are each a methyl or ethyl group), alone or different from each other. A plurality of kinds of polymers, one or more selected from the group of component (B) octamethylcyclotetracycloxane, decamethylcyclopentasiloxane and undecamethylcyclohexasiloxane, or
Three kinds of components , a plurality of kinds and a component (C) surfactant ,
(A) Component (B) and component with respect to 100 parts by weight
5 to 60 parts by weight of the total amount of (C), and 10 of the component (B)
At a ratio of 1 to 200 parts by weight of component (C) to 0 parts by weight.
By blending, improving emulsification and diluting with water
And improve safety and workability.
In addition, a method for producing a scratch-abrasive coating agent for a glass container, which also improves the drying property of the coating film . 2. The component (A) according to claim 1, wherein the component (A) is a methoxy group-containing methyl polysiloxane, a methoxy group-containing ethyl polysiloxane, an ethoxy group-containing methyl polysiloxane, an ethoxy group-containing ethyl polysiloxane, or an ethoxy group-containing methyl ethyl polysiloxane. The method for producing a scratch mark coating agent for a glass container according to claim 1, wherein the agent is one or more selected from the group consisting of siloxane, methoxy group / ethoxy group-containing methylpolysiloxane and ethoxy group / methoxy group-containing methylethylpolysiloxane. Method. 3. The method according to claim 1, wherein a branched fatty acid (D) represented by the general formula: CnH _{2n + 1} COOH (where n is an integer of 10 to 26) is blended and coated. Further improve the dryness of the membrane
A method for producing a scratch coating agent for a crow container according to claim 1.