JPH04279453A - Deep vessel such as jar type pot - Google Patents

Abstract

PURPOSE:To reduce the water scale, etc., adhering to the inside surface of a deep vessel, such as a jar type pot, and facilitate its cleaning by coating the inside surface with a silane compound containing fluorine. CONSTITUTION:A coating of a silane compound which contains fluorine atom is formed on the inside surface in making a deep vessel, such as a jar type pot. A silane compound in this application can be used either singly or in the form of a mixture, and for the use its solution preferably of 10<-1>-0.1mol/l is prepared with arbitrary use of a nonaqueous solution. When a liquid silane compound and a solid material are put in contact, -OH at the surface of the solid material or chemisorption water reacts with -CI, -I, -OCH3, -OCH3, and CH3 of the silane compound to form hydrogen bonds and a monomolecular film or polymolecular film is formed. A film thus formed shows water-repellency and a nonadhesive property for which fluorine atom is markedly effective.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep container such as a jar pot, and more particularly to a deep container such as a jar pot, which has a non-adhesive inner surface so that the adhesion of water scale and the like is significantly reduced.

0002

[Prior Art] Conventionally, this type of container has been made with an inner surface made of glass, stainless steel, etc., and the surface roughness has been significantly reduced so that dirt such as water scale can be easily cleaned. These were not sufficient, and in the case of deep containers, it was often difficult to clean the containers, which often caused problems.

[0003] Methods to improve these problems include spray painting the inner surface of metals such as aluminum and stainless steel with fluororesin, and applying fluororesin-coated plates that have been coated with fluororesin to deep containers such as jar pots. Press processing, etc. have been carried out.

However, with the spray painting method, it is extremely difficult to process deep containers with narrow entrances, and requires the use of special resin for electrostatic painting, or even if this method is used, it is difficult to control the thickness. , it became expensive as the entire film needed to be made thicker. In addition, when using a fluororesin-coated plate that has been coated with fluororesin in advance, there is no problem with film formation, but there is a limit to deep drawing, so it cannot be used in particularly narrow pots for home or portable use. It was difficult to process.

[0005]

[Problems to be solved by the invention] As mentioned above, conventional products that are spray-painted with fluororesin are expensive;
Deep drawing was difficult with those using fluororesin coated plates. In view of the above, the present invention has been developed to solve these problems, and is intended to improve the effectiveness of deep-shaped containers that are difficult to treat with non-stick coating on their inner surfaces, such as by coating them with fluororesin. This is what we provide.

[0006]

SUMMARY OF THE INVENTION The present invention is a deep container such as a jar pot, which is characterized in that its inner surface is coated with a silane compound having a fluorine atom. The present invention will be explained in detail below.

[0007]

[Operation] Various types of glass, ceramics, and various metals including stainless steel can be used as materials for deep containers such as jar pots.

Silane compounds containing fluorine atoms are not particularly limited, but the following compounds are typically used from the viewpoint of chemically reacting with glass, ceramics, and metal substrates and easily forming defect-free films. A compound of formula 1 is used.

[0009]

[Chemical formula 1]

[0010] Specific examples include the following compounds, but are not limited to these.

[0011]

[Case 2]

[0012] Using these compounds alone or as a mixture, a solution of preferably 10-4 to 0.1 mol/l is prepared. A non-aqueous solvent is optionally used as the solvent.
Specifically, n-hexane, n-heptane, carbon tetrachloride,
Examples include dichloromethane and chloroform. These may be used alone or in a mixture.

[0013] The article on which a coating is to be formed may be immersed in such a solution, or the container may be filled with this solution if it is on the inner surface of the container. The reaction temperature can be appropriately selected from room temperature to the boiling point of the solvent.

When the silane compound solution and the base material are brought into contact in this manner, the -OH groups on the base material surface or the chemically adsorbed water and the silane compound -Cl, -I, -OCH3, -OC
H2CH3 groups react to form hydrogen bonds, forming a monomolecular layer or a multilayer film. The film thus formed has outstanding water repellency and non-adhesive properties due to the effects of fluorine atoms.

[0015]

EXAMPLES The present invention will be further explained below with reference to Examples.

Example 1 CF3-(CF2)7-(
An n-hexane solution containing 0.05 mol/l of a silane coupling agent (manufactured by Toshiba Silicone Co., Ltd.) represented by CH2)2-SiCl3 was introduced to fill the inlet. After standing for 1 minute, the solution was taken out, washed twice with n-hexane, further washed with water, and dried. The inner surface of the pot treated as described above had significantly improved repellency compared to the untreated pot. The above-treated pot and the untreated pot of the same model were filled with bancha under exactly the same conditions, left overnight, and then replaced with fresh bancha for 50 days. After that, both were washed with running water and placed in a constant temperature bath. When drying and comparing the weight increase, the untreated one was 8.0
The weight increase was 0.0 mg compared to the treated one.
．． The weight increased by only 2 mg.

Example 2 A water boiling pot with an inner surface made of stainless steel was coated with a silane coupling agent under the same conditions as in Example 1, and then boiled tap water was carried out together with an untreated pot of the same model. I went there 200 times. After washing both with running water, we compared them and found that the treated one clearly had less brown water scale-like substance attached. Furthermore, when both sides were cleaned with a sponge, the inner surfaces of the treated ones were almost as clean as before, but the dirt could not be removed sufficiently from the untreated ones.

[0018]

According to the present invention, it is possible to easily obtain a deep container such as a jar pot, which is difficult to attract dirt such as water scale to the inner surface and is easy to clean.

Of course, the present invention is not limited to jar pots and can be applied to similar utensils.

Claims (1)

[Claims] 1. A deep container such as a jar pot, the inner surface of which is coated with a silane compound having a fluorine atom.