JPS61152555A - Vessel having water repellent and oil repellent function - 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 (Field of Industrial Application) The present invention relates to a container with water and oil repellency functions for accommodating various solutions such as ink, cosmetic liquid, and paint.

(Prior art and its problems) Generally, in order to check the remaining amount of various solutions such as ink contained in a container, it is necessary to use a highly transparent material for the container or provide a viewing window. It is possible to achieve this goal externally or with the naked eye.

However, even if the container is made of a highly transparent material, the solution itself tends to stick and remain on the inner surface of the container.
There was a problem in that it was often difficult to confirm the remaining amount of solution.

Conventionally, in order to solve this problem, it is known that the inner surface of the container is coated with fluororesin, but in this case, the fluororesin itself is milky white.
There were some issues with transparency. When curing coated fluororesin, high heat is applied, so resin containers cannot be used and there are restrictions on the material selection of the container, and even though fluororesin is non-adhesive, Therefore, problems remain in terms of adhesion to the container. In addition,
If the solution stored in this container contains a solvent such as xylene, if there are pinholes in the coated fluororesin film, it will cause damage over time due to high gas permeability. It has had various problems, such as reduced water repellency and oil repellency and the possibility of peeling of the fluororesin film.

(Object of the Invention) The present invention has been made to eliminate the problems of the conventional art as described above, and is low-cost.

Easily create containers with excellent water and oil repellency
As a result of extensive research into a film-forming material that exhibits water- and oil-repellency, this film was finally completed.

(Structure of the Invention) That is, the present invention provides a container having water- and oil-repellent functions, characterized in that the inner surface of a transparent or translucent container for containing various liquids is coated with a chromium-based coupling agent. This is a summary.

In the present invention, since the inner surface of the Fi, 4IK, and container was coated with a chromium-based coupling agent, the chromium-based coupling agent was applied to the 0'H group and 0O located on the inner surface of the container.
OH group, SH group, NH group.

8.03 Forms a stable covalent bond with a H group, etc., and.

As a result, a monomolecular polymer film formed by the chromium-based coupling agent is formed on the outermost surface.

The outermost layer of this film contains a chromium-based coupling agent, which is a fat-acid preventer in each molecule, such as capric acid.

It is presumed that due to the presence of lauric acid, myristic acid, valmitic acid, margaric acid, stearic acid, etc., a container with stable and excellent water- and oil-repellent properties not seen in the past can be obtained. Ru.

Hereinafter, nine aspects of the present invention will be described in detail.

Examples of the chromium-based coupling agent used in the present invention include Chiron Sl, Giron M, Chiron C, Borane, and Borane L (manufactured by Depond), which can be used in water or methanol.

Ethanol, inglovir alcohol, benzene, toluene, methyl ethyl ketone, n-hexane, trichlene, triflon, carbon tetrachloride.

It is used by dissolving 1fiI or a mixture of two or more of them in a solvent such as perchloroethylene, ether, ester, etc. The blending ratio of the chromium-based cutting agent is preferably 101 to 20'Nf% with respect to the total amount of the solution, and if it exceeds 120% by weight, the effect will not change much, but if it is less than α01% by weight, not much effect can be expected. Further, the pH value of this chromium-based coupling agent solution is preferably acidic to neutral in order to stabilize the pH value. This is because if the pH value is on the alkaline side, precipitation of the chromium-based coupling agent may occur. Therefore, when adjusting the pH of the chromium-based coupling agent solution, it is sufficient to use sodium hydroxide, potassium hydroxide, aqueous ammonia, hexamethylene tetramite, etc. to set the pH within the range.

Next, the material of the container used in the present invention basically has transparency or translucency from the viewpoint of being able to confirm the remaining amount of the contents.

Also, materials with poor chemical resistance are preferred, and specific examples thereof include glass, polyethylene terephthalate, polyethylene, and polypropylene.

Examples include vinyl chloride and transparent nylon.

Containers made of these materials and shaped into appropriate shapes are treated at least on the inner surface of the container, such as by being immersed in a solution containing the aforementioned chromium-based coupling agent. Containers can be easily obtained.

1. In the present invention, when coating the inner surface of the container with a chromium-based coupling agent, it is of course possible to perform a surface treatment in advance, and it is of course possible to use various colloidal solutions such as alumina and silica in combination. It's something that doesn't exist.

Specifically, surface treatment is performed to improve the adhesion of the chromium-based coupling agent to the inner surface of the container, and when the container material is resin, plasma treatment,
Etching treatment with chromic acid, treatment with various silane-based coupling agents, or a combination of these treatments can be applied.In addition, when the container material is glass, amino acid as a silane-based coupling agent can be applied. /Ran compound or mercaptosilane compound can be used. Specific examples of aminosilane compounds include aminemethyltrimethoxysilane, aminemethyltriethoxysilane, aminemethylpropoxysilane, aminomethyltriptoxysilane, aminoethyltrimethoxysilane, aminoethyltriethoxysilane, and aminoethyltripropoxysilane. .

Aminoethyltriptoxysilane, aminopropyltrimethoxysilane, aminopropyltriethoxysilane,
Aminopropyl triglopoxy/nolan, aminopropyl triptoxysilane.

N-aminomethyl-aminomethyltrimethoxysilane,
N-aminomethyl-aminomethyltriethoxysilane,
N-aminomethyl-aminomethyltripropoxysilane, N-aminomethyl-amine methyltributoxine la/
, N-·β-aminoethyl-β-aminoethyltrimethoxysilane, N-β-aminoethyl-β-aminoethyltriethoxysilane, N-β-aminoethyl-β-aminoethyltripropoxysilane.

N-β-aminoethyl-β-aminoethyltributoxysilane, N-7-aminopropyl-1-aminoglobil trimethoxysilane + N-y-aminopropyl-
γ-aminopropyltriethoxysilane, N-7-aminopropyl-r-aminopropyl + V-polysilane, N-, r-aminoglopyru-r-aminopropyltriptoxysilane, N-aminomethyl-r-aminoethynol 1totriptoxysilane/ , N-aminomethyl-r
-Aminopropyltrimethoxysilane.

N-aminomethyl-r-aminopropyltriptoxysilane, N-β-aminoethyl-aminomethyltrimethoxysilane, N-β-aminoethyl-aminomethyltributoxysilane, N-aminomethyl-r-aminopropyltrimethoxy Silane, N-aminomethyl-r-aminopropyltriptoxysilane, N-1-aminopropyl-
β-Aminoethyltrimethoxysilane.

Examples include N-r-7minoprobyl-β-aminoethyltributoxysilane, N-β-aminoethyl-aminopropyltrimethoxysilane, N-β-aminoethyl-r-aminopropyltriptoxysilane, etc.
Specific examples of the mercapto 7-lane compound include r-mercaptopropyltrimethoxysilane and r-mercaptotriethoxysilane.

These silane coupling agents include water, methanol, ethanol, and Improvil alcohol. Benzene, toluene, methyl ethyl ketone, n-hexane, trichlene 1) IJ70.

They are used alone or in a mixture of two or more of them dissolved in a solvent such as carbon tetrachloride, perchloroethylene, other ethers, and esters. The blending ratio of this silane coupling agent is preferably 0.01 to 10% by weight based on the total amount of the solution.

(Example) The present invention will be explained in more detail below with reference to Examples.

Example 1 Inner diameter 23. After washing a cylindrical glass container with a bottom with a height of 10 cy with a neutral detergent, the pH was adjusted to 4 using isopropyl alcohol as a solvent (adjusted with hexamethylenetetramine).
Chromium-based cover/removal agent (Kiron C, manufactured by Dupo/@)
The glass container was immersed in an aqueous solution of 1% by weight at room temperature for 10 minutes.9Then, the chromium-based coupling aqueous solution was thoroughly removed from the glass container, and the glass container was heated and dried with hot air at 80°C for 930 minutes to form a transparent Obtained glass containers and vessels.

Example 2 After washing the same glass container as in Example 1 with a neutral detergent, it was washed with an aminosilane compound (manufactured by Toshi Silicone, 5Z60).
After immersing it in a 1N methanol % solution of No. 50) at room temperature, the melt was thoroughly removed from the glass container, and then it was heated and dried with hot air at 80° C. for 30 minutes. Furthermore, this glass container was treated with a chromium-based coupling agent (
A transparent glass container was obtained by immersing the container in an aqueous solution (Kilon C, manufactured by DuPont ■).

Example 3 A bottomed cylindrical translucent hole with an inner diameter of 2 cm and a height of 10 (7)
After washing a J 7" Robyrene container with Inglovil alcohol, the inner surface of the container was etched with a 70°C aqueous solution consisting of 50,017 sulfuric acid and 400 Iy/n chromic acid. Then, the container was washed in the same manner as in Example 1. The container was treated by immersing it in an aqueous solution of a chromium-based coupling agent (Chiron C, manufactured by DuPont ■) under the following conditions, and was heated and dried with warm air at 60° C. for 930 minutes to obtain a translucent container.

Yohiki! ” upper knee L, no Two glass containers having the same shape as in Example 1 were prepared.

Further, polypropylene containers having the same shape as those in Example 5 were prepared, and these were washed with a neutral detergent and used as Comparative Examples 1 and 2.5, respectively.

(Effect of the invention) Examples 1 to 3 above. One third of each container obtained in Comparative Examples 1 to 3 was filled with ink having the composition shown below, and the containers were shaken from side to side.

At that time, the adhesion state of the ink to the container and if (water-based red ink) Kenko Fushin, Phloxine, Tartrazine (eR red dye) ZO weight%, ethylene glycol
25% by weight Nonionic surfactant 01 heavy S・Ch (manufactured by Neugen P, wJ1 Kogyo Seiyaku ■) ・1.2 benzisothiazolin-5-one (Incorporated) mold agent α2 heavy iI #thi・Water
67.7 Yoshiwo (oil-based black ink) ・ Nigrosin paste (black dye) a 5% by weight ・ Oleic acid (solubilizer) 2.5% by weight ・ Ester gum
10% by weight xylene 6
9% by weight・Imbutanol S, OX Kurachi・Ethyl cellosolve 50% by weight *2 Contact angle The contact angle was measured by the liquid cylinder shape method.

In addition, the above-mentioned Example 1. Although the inner surfaces of the glass container and the polypropylene container used in Example 3 were each coated with a fluororesin, the fluororesin coating of the former was likely to peel off, making it difficult to guarantee aging. Regarding the latter, since the material was resin, it was impossible to increase the adhesion of the coating unless high-temperature heat was applied, and neither could be used for British use.

As can be seen from the above description, according to the present invention, the inner surface of the transparent or translucent container is subjected to contact treatment with a chromium-based coupling agent.

When storing various solutions in this container and checking the remaining amount at the time of use, it is possible to prevent the solution from remaining on the inner surface of the container as much as possible, making it possible to quickly and reliably determine the amount by visual inspection. This makes it a particularly useful container. Furthermore, the film treated with the chromium-based coupling agent in Invention 2 was stable even at 91M as it firmly adhered to the inner surface of the container, and the intended purpose could be fully achieved.

It can be used in various industrial container rings and in a wide range of fields.

Claims (1)

[Claims] 1. A container having water- and oil-repellent properties, characterized in that the inner surface of a transparent or translucent container for containing various liquids is coated with a chromium-based coupling agent.