JPS60245685A - Anti-fogging agent composition - Google Patents

Abstract

PURPOSE:To provide an anti-fogging agent compsn. which can be easily applied to the surfaces of molding, exhibits good initial antifogging properties immediately after application and has a persistent anti-fogging effect, by blending a specified inorg. colloidal sol. a nonionic surfactant, a water-soluble or water-dispersible dye and water. CONSTITUTION:1-40wt% (on a solid basis) inorg. colloidal sol (A) having an average particle size of 100mum or below and composed of an alumina sol and a silica sol in a weight ratio of 80-20/20-80 on a solid basis, 0.05-15wt% nonionic surfactant (B), 0.0025-5wt% water-soluble or water-dispersible dye (C) and the balance of water are blended together. The dye (C) is used for the purpose of confirming the absence or presence of a film and the thickness of a film when applied to the surfaces of moldings. The dye must be one which is harmless to the human, does not cause an injury to crops when applied to agricultural films and is not faded by sunlight.

Description

[Detailed description of the invention] "Purpose of invention" TECHNICAL FIELD The present invention relates to a preventive composition.

It is something that can maintain sex for a long period of time.

The present invention relates to a concentrated antifogging agent composition that makes it easy to check the presence or absence of a coating and the thickness and thinness of the coating when applied to the surface of a molded article.

"Prior Art" Various thermoplastic resins have been industrially manufactured and used in a wide range of fields. Many of the molded products manufactured from these thermoplastic resins have hydrophobic surfaces, so depending on the conditions such as the temperature and humidity of the atmosphere in which the molded product is used, the surface of the molded product may become damaged. 1. It causes various inconveniences.

For example, a coggle using a synthetic resin lens,
With safety masks etc., it was difficult to see due to cloudy weather.1 With food packaging film.

It becomes difficult to see the contents due to cloudiness. Also.

With agricultural films used in greenhouses, cloudy weather causes sunlight to pass through quickly, slowing down plant growth, and causing water droplets to fall on cultivated plants, damaging young shoots. This causes many inconveniences, such as causing the outbreak of diseases and causing discomfort to workers in the greenhouse.

In order to eliminate such inconveniences, it is known that it is good to impart antifogging properties to the surface of thermoplastic Y resin molded articles. In order to impart antifogging properties to the throat surface of a thermoplastic resin molded product, there is a method of manufacturing a molded product by kneading a hydrophilic substance such as a surfactant into a thermoplastic synthetic resin phase material, or After forming a molded product, on its surface,
A method of applying a parent, water-based substance, or water-soluble polymer is adopted.

However, in the former method, the hydrophilic substance kneaded into the thermoplastic resin exudes onto the surface of the molded product and coordinates.
Although it imparts antifogging properties to molded products, it is easily washed away by water and the antifogging effect decreases over the course of one hour. In order to solve this problem, attempts have been made to reduce the solubility of hydrophilic substances or water-soluble polymers in water, but this also reduces the antifogging properties themselves. However, there is no satisfactory improvement.

In addition, a method has been proposed in which a water-soluble polymer applied to the surface of a molded article is crosslinked to reduce its solubility in water. However, this method can only be used for water-soluble external molecules with a 1% fixed character structure, and if a cross-linking reaction does not occur on the cloth surface after # and shape light is applied to the surface. However, the process is complicated, so it cannot be said to be a preferable method.

As a method of imparting antifogging properties to the surface of molded products that eliminates the above drawbacks, Tokkosho & ? There is a method described in Publication No. 3-24jJ', but according to the experiments of the present inventors, the surface made antifogged by this method is However, it was found that the flaw was that the defense properties did not last for a sufficiently long period of time.

In addition, a type of antifogging agent (4-cloth type antifogging agent) that imparts auxiliary properties by applying Kugisugifu antifogging agent to the surface of the molded product,
When this antifogging agent is transparent, it has the disadvantage that when it is applied to the surface of a molded product, it is difficult to be sure whether it has been applied uniformly to the entire surface of the molded product. This method eliminates the above-mentioned drawbacks, makes it easy to apply the coating onto the surface of the molded product, makes it easy to confirm the direction of application, and improves the initial sealing properties immediately after coating the surface of the molded product. With the aim of providing an anti-fogging agent composition that has excellent and long-lasting anti-fogging effects, the present invention has been completed as a result of extensive efforts. 1. What is the gist of the present invention?

A. Alumina sol and silica sol with an average particle diameter of 7,00 millimicrons or less in terms of solid weight ratio! θ~koθ/
, 2. θ~? Inorganic colloidal sol mixed at a ratio of 0 (total /θθ) as a solid content /~gθ wt% B, nonionic surfactant o, or~/j wt% C0 water soluble or Water several dyes θ, θθ ~! Heavy: if Chi D, water remaining! l) (total/θθ weight t%).

The present invention will be explained in detail below.

The antifogging agent composition according to the present invention includes, as a first component, an alumina sol and a silica sol having an average particle size of 10θ millimicrons or less in a ratio of *, i? An inorganic colloidal sol mixed at a ratio of θ to 2θ/2O-rO (total is /θθ) as a solid content of / to 0% by weight (the entire antifogging agent composition is 700% by weight) contains.

The inorganic colloidal sol, which is the first component of the antifogging agent composition, is
When applied to the surface of a molded product, it remains on the surface of the molded product and has the function of improving the anti-fogging properties of the molded product and improving the durability of anti-Vt.

The average particle size of the inorganic colloid is 700 millimicrons or less.

When clothed, it reduces the transparency of the molded product.

Undesirable.

The inorganic colloidal sol is made by combining alumina sol and silica sol with solid content r[-ratio of /θ~λθ/λO~! θ (total 7
00)). Alumina sol is effective in improving the moisture wetting of the surface of the molded product after application, but as the proportion of this component increases, it becomes resistant to damage. Silica sol is effective in improving the anti-fog durability of the surface of a molded product after application, but if the proportion of this component increases, the wetting of the surface of the molded product by moisture becomes poor, which is not preferable. In order to improve moisture dripping on the surface of the molded product after coating and maintain the antifogging effect, it is preferable that the mixing ratio of alumina sol and silica sol is within the above range.

The proportion of the first component (A) in the antifogging agent composition according to the present invention is /~aOX amount% (for the entire composition /θOP:
i%). The proportion of inorganic colloidal sol is /
When the M concentration is not reached, the antifogging agent composition contains too little active ingredient, which is not preferable. On the other hand, when it exceeds 70 m view%, the viscosity of the antifogging agent composition becomes too high and becomes difficult to handle, which is not preferable. Particularly preferred within the above range is /! It is in the range of ~30 Jidochi.

The alumina sol may be either a commercially available product itself or an aqueous sol obtained by dispersing commonly available alumina powder in water. When trying to disperse alumina sol in water at a high concentration, the viscosity of the dispersion increases rapidly, which is the so-called chicken tropism, making it difficult to obtain a homogeneous dispersion. When used, a uniform dispersion can be obtained. Furthermore, by mixing silica sol with this dispersion, the viscosity of the dispersion can be lowered.

On the other hand, in most cases, the particle surface of silica sol is negatively charged, but in the present invention.

It is not preferable to use a material that is negatively charged.

This is because the surface of the alumina sol particles mentioned above is positively charged, so when the positively charged silica sol and the positively charged alumina sol are mixed, the amount of mixed liquid will rapidly decrease. It aggregates, gels, and causes poor dispersion. Therefore, it is preferable that each particle of silica sol is positively charged on its surface.

The antifogging agent composition according to the present invention includes, as the second component (B),
O1θ nonionic surfactant! ~/! % by weight (as the entire antifogging agent composition/θO weight i%).

The nonionic surfactant, which is the second component, improves the dispersion stability of the antifogging agent composition, improves the efficiency of coating when applying it to the surface of the molded product, and improves the antifogging property after rubbing. Contribute to measuring.

The amount of nonionic surfactant in the antifogging agent composition is 0.0
When it is less than 1% by weight, the dispersion stability of the antifogging agent composition is poor, the efficiency of coating on the surface of the molded product is poor, and the antifogging property after coating is also improved a#F-a=r. I don't like it, so I don't like it. On the other hand, when it exceeds /J'% by weight, the antifogging agent composition has poor dispersibility and poor fluidity (viscosity increases).

DEF: 6/Due to poor durability, this is not desirable. Particularly preferred among the above ranges is the range of O1/~ to 100%.

Specific examples of nonionic surfactants that can be used as the second component include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenol ethers, polyoxyethylene alkyl esters, and sorbitan alkyl esters.

Examples include polyoxyethylene sorbitan alkyl esters, fatty acid alkylolamides, and cellulose ethers.

The above specific examples are not intended to limit the present invention.

The antifogging agent composition according to the present invention includes, as the third component (0),
Contains a water-soluble dye and a water-dispersible dye.

This dye is blended into the antifogging agent composition according to the present invention, and when the antifogging agent composition is applied to the surface of a molded article to form a film, the presence or absence of a film is confirmed.

It can be used to check the thickness of the coating.

The dye that can be used as the third component is because the solid component contained in the antifogging agent composition is water.

Dyes with such properties selected from Sugi Class 1 that are soluble or dispersible in water include acid dyes,
Basic dyes are included in 0-facet dyes, bathing vat dyes, mordant dyes, and acidic mordant dyes, and can be selected from these.

It is preferable to select a dye that does not harm the human body, a dye that does not harm cultivated plants when applied to an agricultural film, and a dye that easily fades when exposed to sunlight.

The amount of dye in the antifogging agent composition varies depending on the type of dye, but if it is less than 0.00.25% by weight, the degree of coloring of the antifogging agent composition will be insufficient, which is not preferable. on the other hand,! If the weight percentage is exceeded, the degree of coloring is too strong.
Undesirable.

Particularly preferable values in the above range, θ, θθ! The weight is in the range of 100 weight percent (the composition as a whole is 100 weight percent).

The antifogging agent composition according to the present invention contains water as the fourth component. The amount of water is such that the total addition of water as the first to fourth components is 100% by weight. The fourth component, water, functions as a matrix for dispersing the first to third components. , υ11 of the dispersion, which helps the dispersibility of the first component,
A small amount of a fifth component may be included for the purpose of adjusting the dynamic properties, etc. Examples of the fifth component include -valent inorganic acids or polyhydric acids.

The antifogging agent composition according to the present invention is characterized by its '-! Ma,! .

When diluted with water and applied to the surface of a molded product to which antifogging properties are to be added, and the water is evaporated, a film consisting of inorganic colloidal sol particles and nonionic surfactant is formed on the surface of the molded product. be done. This film exhibits excellent resistance to damage and maintains this property for a long period of time.

When diluting the pesticidal composition according to the present invention with water, the purpose and method of use (φ, left method).

It can be diluted up to 1.2θ0 times depending on the place of use, etc.

Molded articles to which the antifogging agent composition according to the present invention can be applied include those that do not impair the characteristics of the present invention.
There is no special condition, and it is a molded product that is generally praised for its special characteristics.

Plastic, inorganic glass? l Ming Ceramic.

There are kinkyuki, mirror surface charges, etc. Among these, plastic molded products are an example of particularly high practical value.

plastic lume, unshaped glass lenses, bathroom windows,
It is a window of a car or train, etc.

To apply the antifogging agent composition according to the present invention to the surface of a molded article, either as it is or after diluting it with water.

A method known per se such as a roll coating method, a dip coating method, a spacing method, a spray foot method, a bar code method, a knife coating method, etc. can be used.

In order to dry the antifogging agent composition applied to the surface of the molded article, natural drying method 1 forced drying method may be used. For forced drying, hot air drying method, infrared irradiation method, etc. can be used.

After applying the antifogging agent composition to the surface of the molded product and drying and volatilizing the water as a dispersion medium, the amount of solid matter deposited is determined by applying the inorganic colloidal sol uniformly over the entire surface of the molded product. The smallest type with roots is fine.

The amount is o, oθ/~1. sy/rr? In pillar degree.

Among these, a range of 0900.5'' to 0.7s9/rr? is preferable.

If the adhesion between the surface of the molded product and the coating film derived from the antifogging agent composition according to the present invention V is insufficient, the surface of the molded product may be subjected to blowing treatment before applying the antifogging agent composition. It is preferable to apply a surface modification treatment method, and a method of applying an undercoat treatment (for example, a coating mainly composed of acrylic resin as described in Japanese Patent Publication No. 33 of Shoj-Off). method of applying a component having a negative charge opposite to that of the inorganic colloid according to the present invention on the surface of a molded product, a method of applying plasma treatment to the surface of a molded product to change the front cover button, and molding. Examples of methods include applying corona discharge treatment to the surface of the product to improve the table [Hj].

"Effects of the Invention" As stated above, the antifogging agent composition of the present invention has particularly remarkable effects as described below, and its industrial advantages are hidden. It's thick.

(Mon) The antifogging agent composition according to the present invention is a mixture of a specific χAjsun alumina sol and an acid sol at a ratio of 6 parts, and is dispersed with an ijf ionic thread surfactant. Because of the low viscosity of the composition, it is easy to handle and can be stored for a long period of time.

(2) The antifogging agent composition according to the present invention is a mixture of alumina sol and silica sol having a specific particle size at a constant ratio of 2%, and also contains a nonionic surfactant. When applied to the surface of a molded product to form a coating film of 7, the transparency of the molded product is not reduced, and it exhibits excellent drip resistance (anti-fogging properties) and sustainability of the anti-fog effect on the surface of the molded product. .

(3) Since the antifogging agent composition according to the present invention contains a dye, when it is applied to the surface of a molded article to form a ha, it is easy to check the uncoated areas.

(4) Since the anti-wrinkle composition according to the present invention contains a dye, for example, when applied to the stock material of an agricultural greenhouse, it absorbs heat rays and dries quickly.

"Example" The present invention will be explained in detail based on an example below.
The present invention does not exceed its gist.

It is not limited to the following examples.

Examples/(1) Preparation of alumina sol While stirring water in a container, aluminum oxide C (manufactured by Nippon Aerosil ■) was mixed.

average particle size λO millimicrons), solid content, 2!
A weight percent dispersion was prepared. During the process of preparing this fraction/dispersion, the viscosity increased.

Add nitric acid while stirring the dispersion to change p)i of the liquid to u,
Adjusted to 3.

(2) Preparation of antifoaming agent liquid While stirring the water in the container, add a silicone emulsion (manufactured by Toshi Silicone ■).

SM! ! /2. Solid content Z! % by weight).

A silicone emulsion (defoaming agent liquid) having a solid content of 70% by weight was prepared.

(3) Water/gram was added to 60 grams of the alumina sol dispersion prepared in (1) above. While stirring this liquid, add positively charged silica sol (manufactured by Nichikagaku Co., Ltd., trade name Snowtex AK, solid content 2j heavy leaves, average particle g)
/! Mi! -0 grams of polyoxyethylene sorbitan monolaurate (manufactured by NOF Corporation,
grams of nonionic surfactant, trade name LT-, 22/), antifoam solution prepared in (2) above/gram,
and green dye (manufactured by Hodogaya Chemical Industry Co., Ltd., trade name DI)
Add 7 grams of AMOND GREEN GH),
The desired antifogging agent composition was obtained.

(4) Evaluation of antifogging agent composition The obtained antifogging agent composition was evaluated for 1-dispersion stability and fluidity using the methods described below. The results are shown in Table 1.

(2) Dispersion Stability The obtained antifogging agent composition was allowed to stand at room temperature for 6 months, and then its appearance was visually observed and evaluated. The evaluation result is displayed as 1
I did it like this:

"○": Even if left for more than 6 months, the appearance will not change.

"△"...Slight separation and sedimentation of solids occurs after being left for less than a month.

Shake vigorously to redisperse.

"X": Immediately after the start of standing, the solid matter aggregates and becomes a gel.

■Fluidity After the obtained antifogging agent composition was left at room temperature for 6 months, 2! The viscosity at °C was measured using a B-type viscometer.

Example - (1) Preparation of methylcellulose dispersion While stirring water in a container, methylcellulose (manufactured by Shin-Etsu Chemical Co., Ltd., non-ionic yarn!f, surfactant, trade name Metrose 8M) was added.
-/s) to prepare a 10% by weight dispersion.

(2) Preparation Example of Antifogging Agent Composition/O grams of water was added to the alumina sol dispersion prepared in (1)! Added grams.

While stirring this liquid, add silica sol (Snowtex A)
K), a methylcellulose dispersion/fgram prepared in accordance with (1) above, a green dye (DIAMO
ND GRF; EN GH)/g, and the antifoam solution prepared in Example/(2) were added/g,
The desired antifogging agent composition was obtained.

(3) Evaluation of antifogging agent composition Characteristics were evaluated by the method described in Example/(4).

The results are shown in Table 1.

Example 3 Water was added per gram of the alumina sol dispersion prepared in Example (1). While stirring this liquid, add 60 g of silica sol (Snowtex AK) and add polyoxyethylene sorbitan monolaurate (LT).
-22/) and green dye (DIAMOND).
GRKFiN GH)/g, and Example/(2
) was added to obtain the desired antifoaming agent composition.

The properties of the obtained antifogging agent composition were evaluated by the method described in Example/(4), and the results are shown in Table 8+47.

Comparative Example/Example/Alumina sol dispersion prepared in (1)?
θ grams, water/! Added Fugram. While stirring this solution, polyoxyethylene sorbitan monolaurate (
LT-,2,2/,) as Z-gram and Example/(2)
The antifoaming agent solution prepared in step 1 was added per gram to obtain an antifogging agent composition containing no silica sol.

The properties of the obtained antifogging agent composition were evaluated by the method described in Example/(4), and the results are shown in Table 1.

Comparative Example - In the example described in Comparative Example/, instead of polyoxyethylene sorbitan monolaurate.

Example 2 An antifogging agent composition containing no silica sol was prepared in the same manner as in Comparative Example 1, except that 7θ grams of the methylcellulose dispersion (Metrose SM-/l) prepared in (1) was used.

The properties of the obtained antifogging agent composition were evaluated by the method described in Example/(4)K, and the results are shown in Table 1.

Comparative Example 3 Silica sol (Snowtex AK) fθ grams and 3 grams of water were added. While stirring this liquid, polyoxyethylene sorbitan monolaure) (LT-2λ)
/) and /g of the antifoam solution prepared in Example /(2) were added to obtain an antifogging agent composition that does not contain alumina sol.Characteristics of the obtained antifogging agent composition were evaluated in the same manner as above, and the results are shown in Table 1.

Comparative Example: In the example described in Comparative Example 3, the ink of polyoxyethylene sorbitan monolaurate was multiplied by Fgram and the same procedure was repeated to obtain an antifogging agent composition that does not trough the alumina sol. .

The properties of the obtained antifogging agent composition were evaluated in the same manner as above, and the results are shown in Table 1. Comparative Example! Negatively charged silica sol (manufactured by Usushi Kagaku ■, Snowtex 3θ, solid content 30%) ≦6.2 grams,
Added 3 grams of water. While stirring this liquid, polyoxyethylene sorbitan monolaurate (LT-2) was added.
27) was added to Daclam and the antifoam solution prepared in Example/(21) was added to obtain an antifogging agent composition containing no alumina sol.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in Examples, and the axis structure is shown in Table 1. , water/L! ”, 3 grams were added.

While stirring this solution, silica sol (
Snow Terra ko) 762 grams.

Polyoxyethylene sorbitan monolaurate (LT-
, 2, 2/) was added, and 7 grams of the antifoaming agent number broken in Example/(2) were added.

Immediately after preparation, the inhibitor composition aggregated rapidly and turned into a gel.

Comparative Example 7 Alumina sol dispersion iF prepared in Example/(1)
Water for grams/! Dougla added. While stirring this liquid, add 7.2 g of silica sol (Snowtex AK) and add polyoxyethylene sorbitan monolaurate (LT).
-J, 2/ ) was added to Dougram, and the antifoaming agent liquid prepared in Example/(2) was added to obtain an antifogging agent composition.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in the examples, and the results are shown in Table 1.

Comparative example? In Example/, a green dye (DIAMONDGRE
An antifogging agent composition was obtained in the same manner as described on the same side, except that EN GH) was not blended.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in Examples, and the results are shown in Table 7.

Comparative example? In Example 1, green dye (DIAM'0NDGR
An antifogging agent composition was obtained in the same manner as described on the same side, except that EJN GH) was not blended.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in Examples, and the results are shown in Table 7.

Comparative Example 10 In Example 3, green dye (DIAMONDGRE
An antifogging agent composition was obtained in the same manner as described on the same side, except that EN GH) was not blended.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in the examples, and the results are shown in Table 1. Comparative Example // The composition prepared in Comparative Example 2 was added with green dye (D).
AMOND GREEN GH), θ, 007% by weight
An antifogging agent composition was obtained in the same manner as described on the same side except that a corresponding amount was added.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in the examples, and the results are shown in Table 1.
An antifogging agent composition was obtained in the same manner as described on the same side, except that AMOIJD GREEN GW) was blended in an amount equivalent to 9 weight rice cakes.

The properties of the obtained antifogging agent composition were evaluated in the same manner as in Examples, and the results are shown in Table 87. Nonionic surfactant *6 manufactured by Toray Silicone ■ Silicone emulsion reference examples /~/g Examples 7 to 3, manufactured by ■ Company. Each of the antifogging agent compositions shown in Comparative Examples 7 to 2 (excluding Comparative Example B) was diluted 750 times with water to prepare a coating solution.

Each of these coating liquids was applied to the surface of a polyethylene terephthalate film by a spray coating method, and the solid content after drying was set to 0.2 og/R. When applying the coating solution to the film, the following points were taken into account. Viscous 1 is shown in Table 2.

■ Identification of the coated film When applying the coated film to the surface, visually evaluate the difficulty in distinguishing between the coated part and the final knotted part by observing with the naked eye. The evaluation results were displayed in the first order.

"○"...It is easy to distinguish between the coated area and the undisturbed area.

"△"... Somewhat difficult to identify.

"×"...The gap is quite interesting b0 ■ Coating amount: Spread the coating liquid on the surface of the film and set the solid content after drying to 09.2 J-gram/ff1'. The amount required for this is shown as a reference example/standard, and is expressed as a relative ratio to this.

Showing the results.

I went to the next meeting.

In the case of "Aj...Reference example/", eχ the same is "B".
...Reference example/approximately 20% increase "C"...
Approximately 90% more than the reference example ■ Shocking speed of the coating film The time it takes to apply the coating liquid to the film surface, leave it at room temperature, and dry it. It is expressed as a relative ratio to this, where ll/ is / and 0θ.

Regarding the film surface on which the coating film is formed.

The light transmittance, the surface wetness immediately after application, and the durability of the antifogging effect were evaluated using the methods described below.

The result M4 is shown in Table 2.

■ Immediately after coating the surface of the 3M light transmittance film with a coating solution to form a coating film, and after exposing the film to 1/week, 7 days a week, the film was exposed to the board length. Measure the transmittance at the Tanatsu meter using a spectrophotometer (Hitachi Model 323)]
■Surface dripping condition Place the film-coated surface facing the inside of the water tank at the top of the aquarium containing water, and keep the outside temperature at 00 degrees Celsius.
The water temperature was maintained at 'f/3° C., and after 0 minutes had elapsed since the temperature was set as above, the state of blur on the film surface was observed and determined with the naked eye. The evaluation results were displayed as follows.

“○J... Table m1 gets wet quickly. [△J...The surface texture is slightly slow.

"×"...The surface is slow.

■ Sustainability of anti-fog effect Place the film in the same way as above on the same aquarium, and adjust the water temperature ￥,
The outside temperature was maintained at room temperature at t0±λ°C, immediately after the start of the test, and after a month.

Otsuka menstruation ill! ! l body, /λ at each time point after months. The abrasion resistance of the film surface was evaluated with the naked eye. The evaluation results were determined to be the same as the first one.

"/"・・・Good intimidation prevention property ``2'' ... Class resistance is slightly poor. V3J・・・・・・Poor anti-fog property “G”・・・・・・Significantly poor needle resistance From Table 7 and Table 2, the following is clear.

(1) The antifogging agent composition according to the present invention has dispersion stability.

Excellent fluidity.

(2) The antifogging agent composition according to the present invention can be easily distinguished between coated areas and uncoated areas, except for applying it to the surface of a molded article.

(3) The surface of the molded product coated with the antifogging agent composition according to the present invention is easy to drip, does not have wooden tablets attached to it, and has an excellent long-lasting antifogging effect.

(4) On the other hand, the comparative example has poor dispersion stability.

There is no product that exhibits excellent properties in terms of fluidity, ease of scratching on the surface (1), and durability of the frog-proofing effect.

Applicant Mitsubishi Monsanto Plastic Vinyl Co., Ltd. Representative Patent attorney Hase Yo - (and 7 others) Procedural amendment 1920 Doru 3, lψ day';・'2' Patent Office Commissioner Shiga Gakudon 1 case Display 1960 Patent Application No. 1Q/9/
, : 1 No. 2 Name of the invention Antifogging agent composition 3 Relationship with the case of the person making the amendment Address of the person 2-1-30 Shiba, Higashikyoto Minato-ku Name ÷ Kakon → Mitsubishi Monzanto Plastic Vinyl Co., Ltd. 4 Agents: 100 (and 1 other person) 5 Date of amendment order Voluntary amendment (1) On page 6, line 6 of the specification, "anti-fog composition" was replaced with "anti-fog composition" and correct it.

(2) Add the following phrase after the first line of page 19 of the Ming MI book.

``The evaluation results were displayed as follows.

"/" ・・The viscosity is 1.2000 cps after t months have passed since the preparation of the antifogging agent.

12"... Viscosity after t months have elapsed since the preparation of the antifogging agent (above)

Claims (1)

[Claims] (IIA, an alumina sol and a 7-silica sol with an average particle size of /θ0 millimicrons or less, based on the solid content M-jA ratio, and θ
An inorganic colloidal sol of ~20/, 20~ and θ (total is /θθ). As solid content /~Zθ heavy weight B, nonionic surfactant θ, OS~/! M % C1
Water-soluble or water-dispersible dye θ, θθ, 2t~! Weight % D, Water Residual (as a whole / θθ weight An antifogging agent composition that is specially designed to have no residual color in terms of weight. (2) The dye is selected from a dye that easily fades when exposed to sunlight. (3) The antifogging agent composition according to claim 1, characterized in that the silica sol is positively charged. The antifogging agent composition according to items 1 to 2.