JPH093442A - Surface treatment agent and its use - Google Patents

Abstract

(57) [Summary] [Structure] The surface treating agent of the present invention comprises a substance having at least one chlorosilyl group, a substance which reacts with hydrochloric acid, and a non-aqueous liquid or solid medium. Alternatively, an abrasive is contained in a material composed of a substance having at least one chlorosilyl group, a substance that reacts with hydrochloric acid, and a non-aqueous liquid or solid medium. The method of use is to thoroughly wash the surface of the base material in advance, apply a surface treatment agent containing a substance having at least one chlorosilyl group, a substance that reacts with hydrochloric acid, and a non-aqueous liquid or solid medium, and then apply the base at room temperature. The material surface is reacted with a substance having at least one chlorosilyl group. At this time, if active hydrogen is contained on the surface of the base material, a dehydrochlorination reaction occurs with the chlorosilyl group and active hydrogen, and a substance having at least one chlorosilyl group is covalently fixed to the surface of the base material via the Si atom. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treating agent and a method for using the same. More specifically, it relates to a method for forming a chemical adsorption protective film having excellent durability and extremely thin water and oil repellency on the surface of a substrate.

[0002]

2. Description of the Related Art Conventional surface treatment agents such as polishes are
There are solid type and emulsion type, and a mixture of a petroleum solvent, silicone, wax, lower alcohol mixture with an abrasive was the mainstream.

[0003]

However, the conventional treatment materials are inferior in gloss and water repellency, and the obtained protective film is simply applied to the surface of the base material, resulting in durability and robustness. Was not sufficient, and there was almost nothing that was oil repellent.

In view of the above-mentioned conventional drawbacks, the present invention is not only excellent in gloss and water repellency, but also in that the protective film is not simply applied to the surface of the base material, The present invention provides a surface treating agent which is bound to have a high durability and fastness and further has an oil-repellent property, and a method of using the same.

[0005] Further, by this, the fluorocarbon polymer film is formed in a thin film with good adhesion to the substrate, and electrical appliances such as hot plates and rice cookers, automobiles, industrial equipment, glass, mirrors, spectacle lenses, interiors. It is intended to improve the performance of base materials that require heat-resistant, weather-resistant, and abrasion-resistant coatings for articles and apparel products.

[0006]

To achieve the above object, the surface treating agent of the present invention comprises a substance having at least one chlorosilyl group, a substance which reacts with hydrochloric acid, and a non-aqueous liquid or solid medium as main components. To do.

Alternatively, an abrasive is contained in a material composed of a substance having at least one chlorosilyl group, a substance which reacts with hydrochloric acid, and a non-aqueous liquid or solid medium.

The method of use is to wash the surface of the base material well in advance, and then apply a surface treatment agent containing a substance having at least one chlorosilyl group, a substance that reacts with hydrochloric acid, and a non-aqueous liquid or solid medium. The substrate surface is reacted with a substance having at least one chlorosilyl group at room temperature. At this time, if active hydrogen is contained on the surface of the base material, a dehydrochlorination reaction occurs with the chlorosilyl group and active hydrogen, and a substance having at least one chlorosilyl group is covalently fixed to the surface of the base material via the Si atom. . At this time, the hydrochloric acid gas generated by the dehydrochlorination reaction can be wrapped by adding a substance that reacts with hydrochloric acid. Further, the non-aqueous liquid or solid medium is an interface portion between the surface treatment agent and the substrate, that is, the substrate surface portion due to the water content in the air that prevents the dehydrochlorination reaction between the active hydrogen on the substrate surface and the chlorosilyl group. There is a function to protect the reaction in the room. Then, excess surface treatment agent is wiped off or washed off with detergent and water. By this series of treatments, a polymer-like ultra-thin film in which a substance having at least one chlorosilyl group is covalently fixed to the surface of the substrate via Si atoms can be formed on the surface of the substrate.

At this time, if a substance having at least one chlorosilyl group is allowed to contain a fluorocarbon group, a strong water- and oil-repellent fluorocarbon-based chemisorption polymer film can be formed on the surface of the base material, so that water repellency is obtained. This is convenient when it is desired to impart oil repellency.

As a substance having at least one chlorosilyl group, CF3-(CF2) n-(R) m --SiXp
Cl3-p (n is 0 or an integer, R is an alkyl group, a vinyl group, an ethynyl group, an aryl group, a substituent containing a silicon or oxygen atom, m is 0 or 1, X is H, an alkyl group, an alkoxyl group, It is convenient to use a substituent of a fluorine-containing alkyl group or a fluorine-containing alkoxy group and p is 0, 1 or 2).

The viscosity of the liquid or solid medium is 10
When it is 00 cps or more, the flow of the processing liquid is small at the time of coating and the handling is convenient. Further, the liquid or solid medium having a boiling point of 100 degrees Celsius or higher and the boiling point of 100 to 2 degrees Celsius
If it is a mixture of 00 degrees, the low boiling point component evaporates quickly after coating and the coating film hardens, so that removal becomes extremely easy.

Furthermore, if alumina, silicon carbide, boron carbide, chromium oxide, iron oxide, artificial diamond or silica fine particles having a size of 10 μm or less is added as an abrasive,
This is convenient because the substrate surface can be removed in a very small amount during coating and the clean surface can be reacted directly with a substance having at least one chlorosilyl group.

As the substance that reacts with hydrochloric acid, carbonates, carboxylates, phosphates, etc., which are salts of weak acids and strong alkalis, are convenient.

Further, the base material can be applied to metals, ceramics, glass, plastics, paper, fibers, leather, etc. as long as the surface contains active hydrogen. In the case of a plastic or a fiber having no active hydrogen on the surface, the surface may be preliminarily treated with an oxygen-containing plasma or corona atmosphere to make the surface hydrophilic.

[0015]

When the treatment method is carried out using the surface treatment agent of the present invention, it is fixed (co-adsorbed) on any substrate surface by a covalent bond, so that it is extremely thin and has excellent water and oil repellency and excellent protection. There is an effect that the film can be formed safely and extremely easily without being exposed to hydrochloric acid gas.

[0016]

EXAMPLES The surface treating agent of the present invention contains a substance having at least one chlorosilyl group, a substance which reacts with hydrochloric acid and a non-aqueous liquid or solid medium in which the substance is dispersed.

Alternatively, a substance having at least one chlorosilyl group, a substance capable of reacting with hydrochloric acid, and a non-aqueous liquid or solid medium as main components are further dispersed with an abrasive.

As the substance having at least one chlorosilyl group, for example, the following hydrocarbon molecules can be used. CH3-(CH2) r SiXp Cl3-p, CH3 (CH
2) s O (CH2) t SiXp Cl3-p, CH3 (CH
2) u-Si (CH3) 2 (CH2) v-SiXpCl
3-p, CF3 COO (CH2) w SiXp Cl3-p (where r is 1 to 25, s is 0 to 12,
t is 1 to 20, u is 0 to 12, v is 1 to 20, w is 1
25 is shown. ) CF3-(CF2) n-(R) m --SiXp Cl3-p
(Here, n is 0 or an integer, R is an alkyl group, a vinyl group, an ethynyl group, an aryl group, a substituent containing a silicon or oxygen atom, m is 0 or 1, X is H, an alkyl group, an alkoxyl group, Substituent of fluorine-containing alkyl group or fluorine-containing alkoxy group, p is 0, 1 or 2) In addition to the above-mentioned reagents, the following specific molecules are further listed. CH3 CH2 O (CH2) 15SiCl3, CH3 (CH
2) 2 Si (CH3) 2 (CH2) 15SiCl3, CH
3 (CH2) 6 Si (CH3) 2 (CH2) 9 SiCl
3, CH3 COO (CH2) 15SiCl3 CF3 (CF2) 7- (CH2) 2-SiCl3 CF3 (CF2) 5- (CH2) 2-SiCl3 CF3 (CF2) 7-C6H6-SiCl3 The chlorosilyl group in the surface treatment agent of the present invention. The preferable content of the substance having at least one is 1 to 30%.

On the other hand, as the substance which reacts with hydrochloric acid, a salt of a weak acid and a strong alkali, for example, a carbonate such as CaCO ₃ or Na ₂ CO ₃ , a carvone salt such as CH ₃ COOK or C ₆ H ₅ COONa, MgHPO ₄ , A phosphate such as K ₃ PO ₄ is convenient. The preferable addition amount is 1 to 30%.

As the liquid or solid medium, any non-aqueous solvent can be used, but petroleum-based solvents, silicone, paraffin wax and the like can be used at a low price. Specifically, oil naphtha, solvent naphtha,
Petroleum ether, petroleum benzine, isoparaffin, normal paraffin, decalin, industrial gasoline, kerosene, ligroin, dimethyl silicone, phenyl silicone, alkyl modified silicone, polyether silicone, paraffin wax, microcrystal wax, polyethylene wax ester wax, oxidation wax, petroleum oil Examples thereof include wax. These may be used alone or in combination of two or more. The preferred content of the liquid or solid medium in the present invention is 50
~ 90%.

If the viscosity is 1000 cps or more after adjustment, the flow of the treatment liquid during coating is small and handling is convenient, but if it is too hard, it is difficult to use. Further, in the case of a mixture of a liquid or solid medium having a boiling point of 200 ° C. or higher and a boiling point of 100 to 200 ° C., the low-boiling point component is quickly evaporated after coating and the coating film is cured, so that it can be removed by wiping. Becomes extremely easy.

Furthermore, when alumina, silicon carbide boron carbide, chromium oxide, iron oxide, artificial diamond or silica fine particles of about several microns are added as an abrasive, the surface of the base material is cut in a very small amount at the time of application and becomes a clean surface. It is convenient because it can directly react with a substance having at least one chlorosilyl group. The preferred content of the abrasive in the present invention is 1 to 10%.

The method of use is to wash the surface of the substrate in advance, and then apply a surface treatment agent containing a substance having at least one chlorosilyl group, a substance that reacts with hydrochloric acid, and a non-aqueous liquid or solid medium. The substrate surface is reacted with a substance having at least one chlorosilyl group at room temperature. Preferably 20 to 30 minutes. At this time, if active hydrogen is contained on the surface of the base material, a dehydrochlorination reaction occurs with the chlorosilyl group and active hydrogen, and a substance having at least one chlorosilyl group is covalently fixed to the surface of the base material via the Si atom. . The hydrochloric acid gas generated by the dehydrochlorination reaction is neutralized and trapped by the substance that reacts with the added hydrochloric acid. Then, excess surface treatment agent is wiped off or washed off with detergent and water. At this time, the substance having at least one chlorsilyl group also reacts with moisture in the air, but the non-aqueous liquid or solid medium is the moisture in the air that interferes with the dehydrochlorination reaction between the active hydrogen on the surface of the base material and the chlorosilyl group. Thus, it has a function of protecting the interface between the surface treatment agent and the base material, that is, the reaction at the surface portion of the base material so as not to be disturbed.

Therefore, by this treatment, an ultrathin film in which a substance having at least one chlorosilyl group is covalently fixed to the surface of the base material via the Si atom can be formed on the surface of the base material.

Substrates which can be used in the present invention include those having a hydroxyl group (--OH) on the surface, such as metals such as Al, Cu or stainless steel, glass, ceramics, paper, fibers, leather and other hydrophilic substrates. Can be mentioned. If the substance has no hydroxyl group on the surface, such as plastic, the surface is preliminarily set to 100% in a plasma atmosphere containing oxygen.
It may be treated with W for 20 minutes or treated with corona to make it hydrophilic, that is, to introduce a hydroxyl group into the surface. However, in the case of a polyamide resin or a polyurethane resin, an imino group (-NH) exists on the surface, and the hydrogen of this imino group (-NH) and the chlorosilyl group (-SiCl) of the chemical adsorbent are dehydrochlorinated. It reacts to form a siloxane bond (-SiO-), so that no surface treatment is required.

The present invention can be widely applied to the following uses. (A) Example of base material; base material is metal, ceramics, glass,
Alternatively, it can be applied to materials made of plastic, wood and stone. The surface may be painted. (B) Examples of knives: kitchen knives, scissors, knives, cutters, chisels, razors, hair clippers, saws, planes, chisels, cones, awls, bites, drill blades, mixer blades, juicer blades, milling Machine blades, lawnmower blades, punches, push cutters, stapler blades, can opener blades, or surgical scalpels. (C) Examples of needles: acupuncture needles, sewing needles, sewing needles, tatami needles,
Injection needles, surgical needles, safety pins, etc. (D) Examples of ceramic products: products made of ceramics, glass, ceramics or enamel. For example, sanitary ware (eg, toilet bowl, washbasin, bath, etc.), tableware (eg, bowl, plate, bowl, teacup, cup, bottle, coffee kettle, pot, mortar, cup, etc.), vase (basin, flowerpot,
(A vase, etc.), aquarium (aquarium for aquaculture, aquarium for appreciation, etc.), chemical experiment equipment (beaker, reaction vessel, test tube, flask, etc.)
Petri dish, cooling tube, stirring rod, stirrer, mortar, vat, syringe), roof tile, tile, enamel tableware, enamel basin, enamel pot. (E) Examples of mirrors: hand mirrors, full-length mirrors, bathroom mirrors, washroom mirrors,
Automotive mirrors (rear view mirrors, side mirrors), half mirrors, show window mirrors, department store product section mirrors, etc. (F) Examples of molding members: press molding dies, cast molding dies, injection molding dies, transfer molding dies, vacuum molding dies, blow molding dies, extrusion dies. , Inflation molding die, fiber spinning die, calendering roll, etc. (G) Examples of ornaments: watches, jewels, pearls, sapphires, rubies, emeralds, garnets, cat's eyes, diamonds, topaz, blood stones, aquamarine,
Sardonyx, turquoise, agate, marble, amethyst, cameo, opal, crystal, glass, ring, bracelet, brooch, tie pin, earring, necklace, precious metal decoration product, platinum, gold, silver, copper, aluminum, titanium, tin Or their alloys, stainless steel, eyeglass frames, etc. (H) Examples of food molding molds: cake baking molds, cookie baking molds, bread baking molds, chocolate molding molds, jelly molding molds, ice cream molding molds, oven plates, ice trays and the like. (I) Examples of cookware: pots, kettles, kettles, pots, frying pans, hot plates, grills for cooking grilled foods, oil drainers, octopus grilled plates, etc. (J) Examples of paper: gravure paper, water / oil repellent paper, poster paper,
High-class pamphlet paper, etc. (k) Examples of resins: polyolefins such as polypropylene and polyethylene, polyvinyl chloride, polyvinylidene chloride,
Polyamide, polyimide, polyamideimide, polyester, aramid, polystyrene, polysulfone, polyether sulfone, polyphenylene sulfide, phenol resin, furan resin, urea resin, epoxy resin, polyurethane, silicon resin, ABS resin, methacrylic resin,
Acrylic ester resin, polyacetal, polyphenene oxide, etc. (l) Examples of home appliances: televisions, radios, tape recorders, audios, CDs, refrigerators for freezing-related equipment, refrigerators, air conditioners, juicers, mixers, fan blades. , Lighting fixtures, dials, perm dryers, etc. (M) Examples of sports equipment: skis, fishing rods, pole vaults, boats, yachts, jet skis, surfboards, golf balls, bowling balls, fishing lines, fishnets,
Fishing float etc. (N) Examples applied to vehicle parts: (1) ABS resin: lamp cover, instrument panel, interior parts, motorcycle protector (2) Cellulose plastic: car mark, steering wheel (3) FRP (fiber reinforced resin): Outer bumper, engine cover (4) Phenolic resin: Brake (5) Polyacetal: Wiper gear, gas valve, carburetor parts (6) Polyamide: Radiator fan (7) Polyarylate: Directional lens, instrument panel lens,
Relay housing (8) Polybutylene terephthalate: Rear end, front fender (9) Polyamino bismaleimide: Engine parts, gear box, wheel, suspension drive system (10) Methacrylic resin is lamp cover lens, instrument panel and cover, center mark (11 ) Polypropylene is bumper (12) Polyphenylene oxide: Radiator grille, wheel cap (13) Polyurethane: Bumper, fender, instrument panel, fan (14) Unsaturated polyester resin: body, fuel tank, heater housing, instrument panel (o) Examples of office supplies: fountain pens, ballpoint pens, sharp pencils, pencil cases, binders, desks, chairs, bookshelves, racks, telephone stands, rulers, drafting tools, etc. (P) Examples of building materials: roofing materials, outer wall materials, interior materials. As roof material, kiln roof tiles, slate roof tiles, galvanized iron (galvanized iron plate), etc.
Outer wall materials include wood (including processed wood), mortar, concrete, ceramic sizing, metal sizing, bricks, stone materials, plastic materials, and metal materials such as aluminum. Interior materials include wood (including processed wood), metal materials such as aluminum, plastic materials, paper, and fibers. (Q) Examples of stone materials: granite, marble, granite, etc. For example, buildings, building materials, art objects, figurines, baths, tombstones, monuments, gateposts, stone walls, sidewalk paving stones, etc. (R) Examples of musical instruments and audio equipment: musical instruments such as percussion instruments, string instruments, keyboard instruments, woodwind instruments, brass instruments, and acoustic equipment such as microphones and speakers. Specifically, percussion instruments such as drums, cymbals, violins, cellos, guitars, koto, pianos, flutes, clarinet, shakuhachi and horns, string instruments, keyboard instruments, woodwind instruments, brass instruments, and microphones, speakers, Audio equipment such as earphones. (S) Others, such as a thermos bottle, a vacuum system device, an insulator for electric power transmission, or a high-voltage insulator having a high water / oil / fouling antifouling effect such as a spark plug.

The embodiment and the schematic diagram of FIG. 1 will be described in order below. In the following examples,% means% by weight unless otherwise specified.

(Example 1) Preparation of surface treatment agent n-paraffin (bp.240 ° C.) as petroleum solvent 20 g Silicone as silicone oil (Shin-Etsu Chemical KF-96, 1000 cps) 15 g Paraffin wax as paraffin (Kanto Kagaku) mp94~96 ℃) 20g heptadecafluorodecyltrichlorosilane at least chlorosilyl group as one having material (CF3 (CF2) 7 - ( CH2) 2 -SiCl3) as a substance that reacts with 8g hydrochloric CaCO ₃ 16g alpha-alumina (1 micron) 5 g was placed in an Erlenmeyer flask, mixed, and stirred while heating at 100 degrees to obtain a suspension. When this liquid was cooled to room temperature, it became a solid, soft waxy surface treatment material.

Using the surface treating agent thus obtained, the following treatment was carried out to evaluate water repellency and oil repellency and durability.

As a surface-treated substrate, automobile window glass 1
Was used (Fig. 1). The surface of the glass 1 contains a large amount of OH groups 2 containing active hydrogen. Therefore, the surface treatment agent adjusted as described above is applied using a sponge so as to be rubbed on the glass surface. Then, when left for 40 to 50 minutes, n-paraffin was evaporated and a white coating film was formed. At this time, even if silicone oil or paraffin is present on the coating film and the surface of the base material, there is a certain probability that the chlorosilyl group of heptadecafluorodecyltrichlorosilane and the surface of the base material have a certain probability as shown in FIG. OH
The groups meet. At this time, the active hydrogen of the OH group on the surface of the substrate and the chlorosilyl group of the heptadecafluorodecyltrichlorosilane undergo a dehydrochlorination reaction, but the heptadecafluorodecyltrichlorosilane molecule is chemically adsorbed on the substrate surface via the SiO bond. And then fixed by covalent bond. After that, when the excess surface treatment agent was wiped off with a rag, a large number of heptadecafluorodecyltrichlorosilane molecules as shown in FIG. 1 (c) were covalently fixed to the surface of the substrate through the SiO network bond. An ultra-thin fluorocarbon polymer film (tens of angstroms) 4 could be formed on the surface of the substrate.

At this time, the heptadecafluorodecyltrichlorosilane molecule reacts with moisture in the air to generate hydrochloric acid, but by adding a substance that reacts with hydrochloric acid, it is trapped and almost no hydrochloric acid odor is generated. There wasn't. When silicon oil or paraffin, which is a non-aqueous liquid or solid medium, is used, moisture in the air that interferes with the dehydrochlorination reaction between the active hydrogen on the surface of the base material and the chlorosilyl group causes the interface between the surface treatment agent and the base material. There was a function of preventing the intrusion into a portion, that is, the surface portion of the base material.

The film was not peeled at all even after the goth test. The water repellent angle was 116 degrees. Moreover, even if the salad oil was rubbed, it could be easily removed by wiping with tissue paper.

Example 2 The same evaluation as in Example 1 was carried out by preparing the following surface treatment agent. n-paraffin (bp.180 ° C.) 20 g Silicone oil (Shin-Etsu Chemical KF-96, 1000 cps) 10 g Paraffin (Kanto Kagaku mp86 ° C.) 20 g Heptadecafluorodecyltrichlorosilane (CF3 (CF2) 7- (CH2) 2-SiCl3 ) 10 g CH ₃ COONa 15 g Alpha alumina (1 micron) 5 g With this surface treatment agent, almost the same results as in Example 1 were obtained except that a white coating film was formed after standing for 20 to 30 minutes. Was obtained. The results are shown in Table 1.

Example 3 The heptadecafluorodecyltrichlorosilane of Example 2 was converted to tridecafluorooctyltrichlorosilane (CF ₃ (CF ₂ ) ₅ (CH ₂ ) ₂ —
The experiment was performed in the same manner as in Example 2 except that SiCl ₃ ) was used.
The results are shown in Table 1.

Example 4 An experiment was conducted under the same conditions except that the glass of Example 2 was used as a rear-view mirror and sodium acetate was removed in Example 2. The results are shown in Table 1. When a mirror was treated with this treating agent, a strong hydrochloric acid odor was generated.

Example 5 An experiment was conducted under the same conditions except that the mirror of Example 4 was used as a hood of a painted automobile and 18 g of potassium hydrogen phosphate was added instead of sodium acetate. The results are shown in Table 1. When the bonnet was treated with this treating agent, almost no hydrochloric acid odor was generated.

Example 6 The same experiment as in Example 2 was conducted using the glass of Example 2 as a urethane bumper. The results are shown in Table 1.

Example 7 An experiment was conducted in the same manner as in Example 1 except that the alpha alumina of Example 1 was changed to silica (8 μm). The results are shown in Table 1.

Example 8 An experiment was conducted in the same manner as in Example 1 except that the amount of n-paraffin in Example 1 was 40 g. The obtained treatment liquid became a liquid wax having a viscosity of about 3000 to 4000 cps. Table 1 shows the processing results.

(Comparative Example 1) The same experiment as in Example 1 was carried out by replacing heptadecafluorodecyltrichlorosilane in Example 1 with heptadecafluorodecyltrimethoxysilane. Table 1 shows the processing results. When an alkoxysilane-based substance was used as in this comparative example, hydrochloric acid was not generated at the time of treatment, but the durability of the formed film was almost zero.

(Comparative Example 2) The same experiment as in Example 1 was carried out except that n-paraffin of Example 1 was replaced with ethanol and calcium carbonate was removed. Table 1 shows the processing results. At this time, hydrochloric acid was generated during the preparation, but there was no smell of hydrochloric acid during the treatment. However, the durability of the coating film formed similarly to Comparative Example 1 was almost nonexistent.

[0042]

[Table 1]

As is clear from Table 1, the surface treatment agent of the present invention retains its water / oil repellency or hydrophilicity even after being repeatedly rubbed with a cloth containing water and washed. However, in Comparative Example 1, the water repellency and oil repellency were rather poor, and almost disappeared after the durability test.

The chemically adsorbed polymer film containing a fluorinated alkyl group formed on the surface by the method of the present invention was excellent in antifouling property. After the friction test, when the sample of Example 2 was immersed in salad oil and wiped off with a tissue paper, the oil content was wiped off cleanly, but in the sample of Comparative Example 1, even after wiping with a tissue paper several times, an oil film was formed on the surface. It was sticky.

[0045]

As described above, the method according to the present invention comprises:
Since the polymer film is formed using active hydrogen on the surface of the base material, a protective film can be efficiently formed on plastics, ceramics, glass, and other various materials. At this time, the hydrochloric acid gas generated by the dehydrochlorination reaction could be wrapped by adding a substance that reacts with hydrochloric acid. Further, when a compound containing a fluorocarbon group and a chlorosilyl group is used as a film forming material, it has excellent water / oil repellency, antifouling property, durability, etc. even on a metal substrate such as Al, Cu or stainless steel. The water- and oil-repellent film can be formed with a high density, a uniform thickness, and a very thin thickness in a state of being chemically bonded to the base material.

The method for producing a chemical adsorption film of the present invention is applied to heat resistant, weather resistant and abrasion resistant ultra-thin coatings for electronic products, particularly electric appliances such as hot plates and rice cookers, automobiles, industrial equipment, mirrors and eyeglass lenses. There is also an effect that can be applied to required equipment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view in which the surface of the substrate is enlarged to the molecular level.

[Explanation of symbols]

 1 substrate 2 OH group 3 interface between coating film and substrate 4 fluorocarbon polymer film

Claims (11)

[Claims] 1. A surface treating agent comprising a substance having at least one chlorosilyl group, a substance which reacts with hydrochloric acid, and a non-aqueous liquid or solid medium. 2. A surface treating agent comprising a substance having at least one chlorosilyl group, a substance which reacts with hydrochloric acid, a non-aqueous liquid or solid medium and an abrasive. 3. The surface treatment agent according to claim 1, wherein the viscosity of the liquid medium is 1000 cps or more. 4. The liquid or solid medium has a boiling point of 200 degrees Celsius.
The surface treating agent according to any one of claims 1 to 3, which is a mixture of a substance having a boiling point of 100 ° C to 200 ° C and a substance having a boiling point of 100 ° C to 200 ° C. 5. The surface treating agent according to any one of claims 1 to 4, wherein the substance having at least one chlorosilyl group contains a fluorocarbon group. 6. A substance having at least one chlorosilyl group, CF3-(CF2) n-(R) m --SiXp.
Cl3-p (n is 0 or an integer, R is an alkyl group, a vinyl group, an ethynyl group, an aryl group, a substituent containing a silicon or oxygen atom, m is 0 or 1, X is H, an alkyl group, an alkoxyl group, The surface treating agent according to any one of claims 1 to 5, wherein a substituent of a fluorine-containing alkyl group or a fluorine-containing alkoxy group, p is 0, 1 or 2) is used. 7. The surface treating agent according to claim 1, wherein a carbonate, a carboxylate or a phosphate is used as the substance which reacts with hydrochloric acid. 8. The polishing agent is alumina, silicon carbide, boron carbide, chromium oxide, iron oxide, artificial diamond or silica fine particles having a particle size of 10 μm or less.
The surface treatment agent according to any one of to 7. 9. A step of thoroughly washing a surface of a substrate in advance, and then applying a surface treatment agent containing at least a substance having one chlorosilyl group, a substance which reacts with hydrochloric acid and a non-aqueous liquid or solid medium, and room temperature. 2. A method of using a surface treatment agent, comprising the steps of: reacting the surface of the substrate with a substance having at least one chlorosilyl group; and removing excess surface treatment agent. 10. A base material is metal, ceramics, glass,
The method for using the surface treatment agent according to claim 9, which is selected from plastic, paper, fiber, and leather. 11. The method for using the surface treating agent according to claim 10, wherein the surface of the plastic or fiber is previously treated with a plasma containing oxygen or a corona atmosphere to make it hydrophilic.