JP2002114945A - Light diffusion film-forming coating fluid composition and forming method of light diffusion film - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a coating liquid composition for forming a light diffusion film suitable for coating on a glass surface such as a tube. SOLUTION: A coating for forming a light diffusion film containing a mixture of a metal alkoxide and / or a hydrolyzed condensation polymer of a metal alkoxide, inorganic white particles and organic white particles, and if necessary, an organic polymer and / or an organic-inorganic composite polymer. A liquid composition, wherein the mixture of the metal alkoxides has the following general formula (I): M ¹ (OR ² ) _m (I) (where M ¹ represents a metal and R ² is independently lower A compound represented by the following formula (II): R ¹ _n M ² (OR ² ) _mn (II) (wherein _m represents the oxidation number of metal M ¹ ) R ¹ independently represents an organic group, M ² represents a metal the same as or different from M ¹ , R ² independently represents a lower alkyl group, m represents the oxidation number of the metal M ² , and n represents 1 Or represents an integer of 2); A coating solution composition for forming a light diffusion film, which is a mixture of

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid composition for forming a light diffusion film, and more particularly to a coating liquid composition for forming a light diffusion film formed on the inner surface of a bulb used in a bulb-type fluorescent lamp and the like. The present invention also relates to a method for forming a light diffusing film with the coating composition, and a glass product coated with the coating composition.

[0002]

2. Description of the Related Art In recent years, instead of incandescent bulbs, several bulb-shaped fluorescent lamps have been proposed for the purpose of saving power. In such a bulb-type fluorescent lamp, a U-shaped or double U-shaped fluorescent lamp is integrated with a lighting tube and a ballast and incorporated in a glass glove. In general, a light diffusion film is formed on the inner surface of the glove by applying an inorganic white pigment so that light from a built-in fluorescent lamp is uniformly diffused.

As a method of applying the inorganic white pigment, an electrostatic coating method and a wet coating method are known. The electrostatic coating method has been conventionally used for incandescent lamps, and is a method of electrostatically coating silica fine powder or the like. The wet coating method is a method using a coating liquid in which an inorganic white pigment used for a fluorescent lamp or the like is dispersed in a solvent.

[0004] However, the electrostatically coated silica fine powder film has a weak adhesive strength, and thus has a drawback that a part of the film falls off. This is considered to be due to moisture in the air in the case of the bulb-type fluorescent lamp, since air exists in the globe, unlike the case of the incandescent lamp.

[0005] As the coating liquid used in the wet coating method, those containing various components are known. For example, a suspension prepared by dispersing an inorganic white pigment in an organic solvent containing a binder such as nitrocellulose is used. Suspensions are known. JP-A-58-155647 discloses a suspension in which an inorganic white pigment is dispersed in water together with a binder which is at least one of an aqueous saturated polyester resin, an acrylic resin and a water-soluble cellulose resin. A method is disclosed.
In addition, for example, those using emulsions such as cellulose derivative resin, amino group-modified silicone oil, etc., vinyl acetate-ethylene copolymer emulsion, colloidal silica-containing acrylic composite particle emulsion, acrylic silicone copolymer particle emulsion, and Those using a coupling agent such as an epoxy group-containing silane coupling agent, an amino group-containing silane coupling agent, and a methacryloxy-containing silane coupling agent are known.

However, any of the light diffusion films formed using the conventional coating liquids causes problems such as falling off, discoloration, generation of bubbles, and peeling when used for a long time. For example, when a light-diffusing film is formed in a globe of a bulb-type fluorescent lamp using a coating solution containing an aqueous saturated polyester resin, a cellulose derivative resin, etc. Due to the generated heat, the diffusion film may turn yellow. In addition, a diffusion film formed using an amino group-modified silicone oil may have low adhesion strength. When the vinyl acetate-ethylene copolymer emulsion is used, there is a problem that the appearance of the diffusion film is often poor due to bubbles. When the colloidal silica-containing acrylic composite particle emulsion is used, the diffusion film at the portion where water adheres is easily peeled off, and when the acrylic silicone copolymer particle emulsion is used, the generation of bubbles is relatively small, but the adhesion strength is low. Is not enough. In addition, epoxy group-containing silane coupling agent,
When an amino group-containing silane coupling agent, a methacryloxy-containing silane coupling agent, or the like was used, peeling of the film was relatively unlikely to occur, but the performance of each was insufficient.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems. More specifically, a coating solution composition for forming a light diffusion film having excellent strength and little discoloration is provided. It is an object to provide a product and a method for producing the same. Further, another object of the present invention is to provide a coating liquid composition for forming a light-diffusing film capable of blocking ultraviolet rays.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a metal alkoxide.
Hydrolytic condensation polymerization of sid and / or metal alkoxide
Mixture of organic materials, inorganic white particles and organic white particles
At least one white particle selected from the group
Coating composition for forming a light diffusion film,
A mixture of lucoxide has the following general formula (I): M¹(OR²)_m (I) (where M¹Represents a metal, R²Is independently lower alk
And m is a metal M ¹Represents the oxidation number of
A compound having the following general formula (II): R¹ _nM²(OR²)_mn (II) (wherein, R¹Independently represents an organic group;²Is M¹Same as
Represents one or a different metal, R²Is independently lower alk
And m is a metal M²Where n is 1 or
Is an integer of 2).
A coating solution composition for forming a light-diffusing film.
I do.

In a preferred embodiment, the coating composition for forming a light diffusion film further comprises an organic polymer and / or an organic polymer.
Or it contains an organic-inorganic composite polymer.

[0010] In a preferred embodiment, the white particles are at least one white particle selected from the group consisting of inorganic white pigments and organic white pigments.

[0011] In a preferred embodiment, the white particles are a mixture of an inorganic white pigment and an organic white pigment.

The present invention further provides a metal alkoxide and
And / or a hydrolysis-condensation product of a metal alkoxide and an organic
Polymer and / or organic-inorganic hybrid polymer and inorganic
Small particles selected from the group consisting of white particles and organic white particles.
For forming a light diffusion film containing at least one white particle
A coating liquid composition, wherein the metal alkoxide is
General formula (I) of: M¹(OR²)_m (I) (where M¹Represents a metal, R²Is independently lower alk
And m is a metal M ¹Represents the oxidation number of
A coating solution for forming a light diffusion film, which is a compound
Composition.

[0013] In a preferred embodiment, the white particles are at least one white particle selected from the group consisting of inorganic white pigments and organic white pigments.

In a preferred embodiment, the white particles are a mixture of an inorganic white pigment and an organic white pigment.

The present invention also includes a step of applying any one of the above-described coating compositions for forming a light diffusion film to a glass surface, and a step of drying the applied coating composition for forming a light diffusion film. And a method of forming a light diffusion film.

In a preferred embodiment, the glass is a bulb, and the coating composition for forming a light diffusion film is applied to an inner surface of the bulb.

Further, the present invention relates to a glass product having a light diffusion film formed by applying the coating composition for forming a light diffusion film.

The present invention also relates to a lighting fixture provided with the glass product.

[0019]

As described above, the coating composition for forming a light diffusion film of the present invention comprises a metal alkoxide and / or a hydrolyzed polycondensate of a metal alkoxide, and inorganic white particles and organic white particles. At least one white particle selected from the group consisting of:

The metal alkoxide used in the present invention is
General formula (I): M¹(OR²)_m (I) (where M¹Represents a metal, R²Is independently lower alk
And m is a metal M ¹Represents the oxidation number of
Compounds and the following general formula (II): R¹ _nM²(OR²)_mn (II) (wherein, R¹Independently represents an organic group;²Is M¹Same as
Represents one or a different metal, R²Is independently lower alk
And m is a metal M²Where n is 1 or
Is an integer of 2).

The metal M (general term for M ¹ and M ² ) of the metal alkoxide is silicon (Si), titanium (T
i), zirconium (Zr), aluminum (Al),
Zinc (Zn), iron (Fe), cobalt (Co), nickel (Ni), beryllium (Be), magnesium (M
g), calcium (Ca), strontium (Sr),
Barium (Ba), scandium (Sc), yttrium (Y), lanthanum (La), cerium (Ce), hafnium (Hf), vanadium (V), niobium (Nb),
Tantalum (Ta), chromium (Cr), molybdenum (M
o), tungsten (W), manganese (Mn), copper (C
u), boron (B), gallium (Ga), indium (In), thallium (Tl), germanium (Ge),
Tin (Sn), lead (Pb), phosphorus (P), arsenic (A
s), antimony (Sb), bismuth (Bi), sulfur (S), selenium (Se), tellurium (Te) and the like. Among them, silicon, titanium, zirconium and aluminum are preferably used.

The organic group R ¹ in the metal alkoxide represented by the general formula (II) may be a substituted or unsubstituted chain or cyclic aliphatic group or an aromatic group, an alkyl group, an aryl group, an aralkyl And alkenyl groups are preferably used. Preferably, the number of carbons in the R ¹ group is from 1 to 24, more preferably from 1 to 18, and most preferably from 1 to 12.

Examples of the alkyl group include a chain alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group and an isopropyl group, and a cycloalkyl group such as a cyclopentyl group and a cyclohexyl group. Examples of the aryl group include a phenyl group. Examples of the aralkyl group include a benzyl group. Examples of the alkenyl group include a vinyl group. A substituted alkyl group is also preferably used.As the substituted alkyl group, a methacryloxypropyl group, a glycidoxypropyl group, an epoxycyclohexylethyl group, an aminopropyl group, an aminoethylaminopropyl group, a mercaptopropyl group,
Examples include a ureidopropyl group, an isocyanatepropyl group, and a trifluoropropyl group. Each R ¹ is independently selected.

R ² in the metal alkoxides represented by the above general formulas (I) and (II) is a lower alkyl group, particularly preferably a C1-6 alkyl group, and is a methyl group, an ethyl group, a propyl group, an isopropyl group, Or a butyl group is more preferred. Each R ² is independently selected.

The oxidation number m of metal M of the above metal alkoxide
Is preferably 2 to 8, more preferably 3 to 4. The number n of R ¹ groups represents an integer of 1 or 2.

Preferred metal alkoxides are those of the following general formula (Ia): R ³ _n M (OR ⁴ ) _mn (Ia) wherein R ³ is independently a C1 to C6 linear or cyclic Alkyl group, C6-C9 aryl group, C7-C10
Aralkyl group, C2-C5 alkenyl group, (meth)
Acryloxy-C1-C4) alkyl group, glycidoxy-C1-C4 alkyl group, M represents silicon, titanium,
Represents zirconium or aluminum, R ⁴ independently represents a C1 to C4 alkyl group, m represents 3 or 4, and n represents an integer of 0 to 2).

When the metal M is silicon, the metal alkoxide represented by the general formulas (I) and (II) is a silane alkoxide. Specific examples of the silane alkoxide include tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, n-propyltrimethoxysilane, isobutyltrimethoxysilane, phenyltrimethoxysilane, and phenyltrimethoxysilane. Ethoxysilane,
Vinyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, dimethyldimethoxysilane, diphenyldimethoxysilane, cyclohexylmethyldimethoxysilane, phenylmethyldimethoxysilane, γ-glycidoxypropylmethyldimethoxy Examples include silane.

Examples of the metal alkoxide of titanium include tetraisopropoxy titanium, tetra-n-butoxy titanium and the like.

Examples of the metal alkoxide of zirconium include tetra-n-butoxyzirconium.

Examples of the metal alkoxide of aluminum include tri-s-butoxyaluminum.

Homo-oligomers and hetero-oligomers of the above metal alkoxides are also used as the metal alkoxide of the present invention.

In the present invention, it is preferable to use a metal alkoxide as a hydrolyzed condensation polymer. The hydrolysis-condensation product of the metal alkoxide can be obtained by a method usually performed by those skilled in the art. For example, it can be obtained by mixing one or more of the above metal alkoxides, dissolving them in an appropriate solvent, adding a catalyst and water thereto, and mixing, stirring and reacting.

Hereinafter, a specific preparation of a hydrolyzed condensation polymer of a metal alkoxide will be described. First, a metal alkoxide solution is prepared. Examples of the solvent include lower alcohols such as methanol, ethanol, propanol, isopropanol, butanol, and isobutanol; ethylene glycol, ethylene glycol monomethyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, propylene glycol monomethyl ether, and ethylene glycol. Glycol derivatives such as glycol monomethyl ether acetate and propylene glycol monomethyl ether acetate; hydrocarbons such as toluene and xylene; ketones such as methyl ethyl ketone and acetylacetone; esters such as ethyl acetate and ethyl acetoacetate; ethers such as butyl methyl ether and tetrahydrofuran. Can be These solvents can be used alone or in combination of two or more.

Next, a catalyst and water are added to the metal alkoxide dissolved in the above-mentioned solvent to cause a reaction. Examples of the catalyst include inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid, and phosphoric acid;
Organic acids such as formic acid, acetic acid, oxalic acid, maleic acid, and trifluoroacetic acid; bases such as potassium hydroxide, sodium hydroxide, calcium hydroxide, and ammonia; organic tin compounds such as dibutyltin dilaurate and dibutyltin diacetate; aluminum Metal chelate compounds such as tris (acetylacetonate) and titanium bis (butoxy) bis (acetylacetonate); and boron compounds such as butoxide borate and boron trifluoride.
These catalysts may be used alone or in combination of two or more.

The added water affects the degree of polymerization of the resulting polycondensate. The addition amount of water is preferably about 0.01 to 3.0 mol per 1 mol of the alkoxy group of the metal alkoxide.

The above components are reacted by sufficiently stirring. The stirring is usually performed for about 0.5 to 16 hours. The reaction may be performed at room temperature, or may be heated or cooled for adjusting the reaction.

The solution of the metal alkoxide hydrolyzed polycondensate prepared as described above is hereinafter also referred to as a sol solution.
The sol solution may be used as it is in the following steps, or an optional solvent may be further added as necessary.

When the metal alkoxide is directly used without preparing a hydrolysis polycondensate in the preparation of the coating composition for forming a light diffusing film of the present invention, the metal alkoxide is subjected to the hydrolysis polycondensation of the metal alkoxide as described above. It can be used by dissolving it in the same solvent as used when preparing the product.

The metal alkoxide solution and / or the hydrolyzed polycondensate sol solution prepared as described above are mixed with white particles and, if necessary, an organic polymer and / or an organic-inorganic composite polymer. The light-diffusing film-forming coating liquid composition of the present invention (hereinafter, also referred to as a coating liquid) is prepared by further adding an appropriate solvent, stirring sufficiently, and dispersing.

When the metal alkoxide represented by the general formula (I) (when n = 0 in the general formula (II)) is used alone, there is a possibility that a crack is generated. Therefore, the metal alkoxide represented by the general formula (II) is used. It is used in combination with a metal alkoxide or in combination with an organic polymer and / or an organic-inorganic composite polymer described later. Most preferably, the metal alkoxide represented by the general formula (I) or (II) is used in combination with an organic polymer and / or an organic-inorganic composite polymer.

The amount of the metal alkoxide and / or the hydrolyzed condensate is preferably 0.1 to 80% by weight, more preferably 1 to 50% by weight, and more preferably 1 to 50% by weight based on the whole coating composition.
0% by weight is most preferred. If it is less than 0.1% by weight, the adhesive strength may be weak, and if it exceeds 80% by weight, cracks may occur.

The method for preparing the coating composition for forming a light-diffusing film of the present invention is not particularly limited, and may be prepared by a method other than the above. As mentioned above, metal alkoxides can also be used as homo-oligomers or hetero-oligomers. Metal alkoxides and those obtained by adding white particles to a solvent containing water and a catalyst for hydrolysis are separately prepared, and before use, the two are mixed and stirred to react to form a coating liquid. it can. The white particles may be dispersed in a suitable solvent such as alcohol in advance using a dispersant such as a surfactant, and then added to the sol.

The white particles used in the present invention include inorganic white particles or organic white particles, or a mixture of inorganic white particles and organic white particles. The inorganic white particles and the organic white particles each have the characteristics described below, and can be appropriately selected and used depending on the purpose of use and application.

The inorganic white particles refer to white inorganic particles, and may be inorganic white pigments such as inorganic white pigments (eg, oxides, phosphates, carbonates, silicates), clays, kaolins and talcs. Anything can be used.
In particular, inorganic white pigments are preferably used.

Among the inorganic white pigments, metal oxides include zirconium oxide, titanium oxide, aluminum oxide, cerium oxide, zinc oxide, and silicon dioxide (silica).
And the like. Examples of the phosphate include calcium phosphate and zinc phosphate. Examples of the carbonate include calcium carbonate, magnesium carbonate, barium carbonate and the like. As silicates, zirconium silicate,
Aluminum silicate and the like can be mentioned. Among these inorganic white particles, metal oxides such as titanium oxide, zinc oxide, and cerium oxide also have a function of absorbing ultraviolet light, and are therefore particularly suitable for forming a light-diffusing film capable of cutting off ultraviolet light.

Organic white particles are organic particles that exhibit white color. Organic white particles are characterized in that light transmittance and luminous flux are improved as compared with inorganic substances, and are uniformly dispersed because the specific gravity is much smaller than that of inorganic substances. It has the feature of being able to. Examples of the organic white particles include an organic white pigment, an organic polymer exhibiting white or an organic-inorganic composite polymer having white. Among these organic white particles, organic white pigments also have a hiding power, and are particularly suitable for forming a light-diffusing film having a hiding property.

Examples of the organic white pigment include alkylene bismelamine derivatives, bisstilbene sulfonic acid derivatives-quaternary
And a quaternary ammonium compound complex salt. In particular, an alkylenebismelamine derivative is suitably used. Examples of the alkylenebismelamine derivative include, for example, those described in
Examples thereof include ethylene bismelamine, N, N'-dicyclohexylethylene bismelamine, N, N'-dimethylethylene bismelamine, and propylene bismelamine as described in JP-A-122674.

Examples of the white organic polymer include polystyrene fine particles, benzoguanamine fine particles, melamine fine particles, and acrylic fine particles. Examples of the white organic-inorganic composite polymer include silicone rubber powder, silicone resin powder, and hydrophobic silica powder.

The specific examples of the above white particles (inorganic white particles and organic white particles) are all examples, and it goes without saying that the white particles are not limited to these specific examples.

These white particles may be used alone.
Two or more types may be combined. That is, a combination of inorganic white particles, organic white particles, or a combination of a plurality of inorganic white particles and organic white particles may be used.

Examples of the organic polymer used in the present invention include acrylic resin, polyester resin, polyether resin, epoxy resin, urethane resin, butyral resin, alkyd resin and the like. These organic polymers may be used alone or in combination of two or more.

Examples of the organic-inorganic composite polymer used in the present invention include silicone oil, silicone resin, silicone rubber, silicone-modified alkyd resin, silicone-modified epoxy resin, silicone-modified acrylic resin, and silicone-modified polyester resin. These organic-inorganic composite polymers may be used alone or in combination of two or more. Further, an organic polymer and an organic-inorganic composite polymer may be used in combination.

According to the present invention, the coating composition for forming a light diffusion film obtained as described above is applied to a glass surface,
Then, by drying the applied coating liquid composition, a coating liquid composition for forming a light diffusion film is formed on the glass surface.

The coating step can be performed by any method commonly used by those skilled in the art, such as dip coating, spin coating, spray coating, shower coating, and flashing coating. The thickness of the coating film after drying is preferably 0.01 μm to 10 μm, more preferably 0.1 μm to 10 μm.
1 μm to 10 μm, most preferably 0.5 μm to
5 μm. When the thickness is less than 0.01 μm, the opacity is lost, so that it is not preferable. When the thickness exceeds 10 μm, cracks occur.

The applied composition may be dried at 20 ° C. or higher, preferably at 40 ° C. or higher, more preferably at 50 ° C. or higher for about 1 to 60 minutes. According to the method of the present invention, since the coating liquid composition can be dried at a low temperature (100 ° C. or lower), baking is not required. Therefore, the manufacturing process is short, the work is easy, and the drying cost is greatly reduced.

The light diffusing film thus obtained is excellent in strength and has little discoloration due to heat or the like. For example, a conventional light-diffusing film containing an organic resin (for example, an acrylic resin emulsion) burns at 250 ° C. and changes color,
It has been found that the light diffusion film according to the present invention does not discolor even at 250 ° C. Further, in particular, by using ultraviolet-absorbing white particles such as zinc oxide, an ultraviolet-absorbing light-diffusing film can be formed, so that ultraviolet rays can be cut as compared with conventionally used white light bulbs. .

The glass on which the coating composition for forming a light diffusing film of the present invention is applied is preferably a bulb, and particularly preferably a glass globe for a bulb-type fluorescent lamp. The coating composition for forming a light diffusion film of the present invention is preferably applied to the inner surface of a bulb.

According to the present invention, there is also provided a glass product having the light diffusion film formed as described above, and a lighting fixture provided with such a glass product. Preferably, the lighting fixture of the present invention is a compact fluorescent lamp.

[0059]

Hereinafter, the present invention will be described with reference to examples.
The present invention is not limited to this embodiment.

Example 1 (Production Example of Sol Solution) Production Example 1: Tetramethoxysilane 3
0.8 g, 62.6 g of ethanol, 0.1 g of nitric acid and 6.5 g of water were mixed, and this mixture was stirred at room temperature for 4 hours to obtain a sol liquid 1.

(Preparation of Coating Composition and Formation of Coating Film) 100 g of the sol prepared in Production Example 1, 30 g of silicone resin, 15 g of calcium carbonate, titanium oxide 1
5 g and 140 g of isopropanol were sufficiently mixed with a stirrer to obtain a coating composition.

The obtained coating composition was spin-coated on a glass substrate at a speed of 500 rpm.
The obtained coating film was dried at 50 ° C. for 5 minutes. The resulting coating showed excellent homogeneity and excellent adhesion strength. In addition, the homogeneity was visually evaluated for the appearance, and the generation of bubbles,
A case where there was no color unevenness or aggregates was evaluated as ○, and a case where there was any one was evaluated as ×.

The adhesion strength was evaluated by the appearance of the coating film after dropping a water drop on the coating film and leaving it for 18 hours.
The case without cracks and peeling was evaluated as excellent (O), and the case with any one of swelling, cracks and peeling was evaluated as low adhesion strength (x).

(Examples 2 to 18) Coating compositions were prepared using the components shown in Tables 1, 2 and 3 below, and a coating film was formed on a glass substrate in the same manner as in Example 1. And evaluated. The results are shown in Tables 2 and 3.

[0065]

[Table 1]

[0066]

[Table 2]

[0067]

[Table 3]

As a result, all the coating compositions for forming a light diffusion film of the present invention were excellent in uniformity, and the obtained coating films were uniform and excellent in adhesion strength. Furthermore, it was shown that sufficient performance as a coating film could be obtained without heat treatment (150 ° C. or higher).

(Examples 19 to 23) Using the components shown in Table 4 below, coating compositions were prepared.
A coating film was formed on a glass substrate in the same manner as described above, and evaluated. Table 4 shows the results.

[0070]

[Table 4]

As an organic white pigment, SHIGENOX OW
P (Hakkor Chemical Co., Ltd.) was used. This organic white pigment has a remarkably small specific gravity as compared with the inorganic white particles, and the light-diffusing film forming coating liquid compositions of Examples 19 to 23 using the organic white pigment are particularly excellent in uniformity.
The resulting coating film was homogeneous, had excellent adhesion strength, and improved light transmittance and luminous flux (data not shown). And it was shown that sufficient performance as a coating film could be obtained without further heat treatment (150 ° C. or more).

(Example 24) The coating compositions obtained in Examples 1 to 23 were applied to the inner surface of a spherical transparent glass glove and dried with warm air at 50 ° C. The obtained coating film was homogeneous, had high adhesive strength, and did not fall off. No discoloration was observed even when heated to 250 ° C. As a comparison, a coating film (Comparative Example 1) obtained in the same manner using a composition composed of 100 g of an acrylic resin emulsion, 100 g of zirconium oxide, and 100 g of water was inferior in homogeneity due to generation of bubbles, and swelled. It was found that the adhesion was inferior and the adhesion strength was inferior. Further, as Comparative Example 2, cellulose resin 1
It was found that the coating film obtained in the same manner using a composition composed of 00 g, 100 g of barium carbonate, and 100 g of butyl acetate was homogeneous, but peeled off the film, resulting in poor adhesion strength.

Example 25 A test (ball drop test) was conducted to compare the strength of a glass glove coated with the coating composition for forming a light diffusion film according to the present invention and a conventional glass glove.

The procedure of the ball drop test is as follows: (1) Prepare a pipe having holes in the side face every 10 cm in the longitudinal direction. (2) A pipe is set up vertically on a sample (glass glove), and steel balls (weight 55 g) are sequentially arranged from the bottom to a height of 10 cm,
0 cm, 30 cm. . . . And drop it on the sample. (3) Record the height X of the hole at the time when the sample was broken.

A ball drop test was conducted using a glass glove whose inner surface was similarly coated with the coating solution composition of the present invention (Example 17) and the coating solution composition of the conventional product (Comparative Example 1). As a result, n = 1 in the conventional product
At 0, the average value of X was 60 cm. On the other hand, in the glass glove using the coating liquid composition of Example 17 of the present invention, the average value of X was 96 cm at n = 10.

[0076]

As described above, according to the present invention, a light diffusing film having excellent strength and little discoloration is provided. Further, the light diffusion film obtained by the method of the present invention is particularly suitable for use in a compact fluorescent lamp. Furthermore, by using a white particle such as zinc oxide having excellent UV-cutting property and adjusting the film thickness to form a nearly transparent light-diffusing film, application to mercury lamps with strong ultraviolet rays is expected. .

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09D 185/00 C09D 185/00 201/00 201/00 F21V 3/04 F21V 3/04 CF (72) Inventor Kazuhisa Ishii 5-41 Senmon, Itami-shi, Hyogo Prefecture, Nagaseke Mutex Co., Ltd. Itami Plant (72) Inventor Yoshiaki Sakashita 5-41, Senmon, Itami-shi, Hyogo Prefecture Nagaseke Mutex Co., Ltd. Itami Plant F-term (reference) 4G059 AA07 AC07 AC30 FA01 FA05 FA15 FA16 FA17 FA19 FA20 FA21 FA28 FB06 4J038 CC022 CE022 CG002 DA162 DA172 DB002 DD002 DL031 DL032 DM021 DM022 HA216 HA266 HA426 HA436 HA526 HA536 KA08 NA19 NA24 PB08 PC03

Claims (11)

[Claims] A metal alkoxide and / or a metal alkoxide
Mixture of hydrolyzed polycondensation of lucoxide and inorganic white particles
At least one selected from the group consisting of
A light-diffusing film forming coating liquid containing one white particle
A composition, wherein the mixture of the metal alkoxides comprises:
The following general formula (I): M¹(OR²)_m (I) (where M¹Represents a metal, R²Is independently lower alk
And m is a metal M ¹Represents the oxidation number of
A compound having the following general formula (II): R¹ _nM²(OR²)_mn (II) (wherein, R¹Independently represents an organic group;²Is M¹Same as
Represents one or a different metal, R²Is independently lower alk
And m is a metal M²Where n is 1 or
Is an integer of 2).
A coating solution composition for forming a light diffusion film, comprising: 2. The coating composition for forming a light diffusion film according to claim 1, further comprising an organic polymer and / or an organic-inorganic composite polymer. 3. The coating solution composition for forming a light diffusion film according to claim 1, wherein the white particles are at least one white particle selected from the group consisting of an inorganic white pigment and an organic white pigment. 4. The coating composition for forming a light-diffusing film according to claim 1, wherein the white particles are a mixture of an inorganic white pigment and an organic white pigment. 5. A metal alkoxide and / or a metal alkoxide.
Hydrolyzed polycondensate of lucoxide, an organic polymer and
// Organic-inorganic composite polymer, inorganic white particles and organic
At least one selected from the group consisting of white particles
White particles, and a light-diffusing film-forming coating solution composition containing
Wherein the metal alkoxide has the following general formula:
(I): M¹(OR²)_m (I) (where M¹Represents a metal, R²Is independently lower alk
And m is a metal M ¹Represents the oxidation number of
A coating solution for forming a light diffusion film, which is a compound
Composition. 6. The coating composition for forming a light diffusion film according to claim 5, wherein the white particles are at least one white particle selected from the group consisting of an inorganic white pigment and an organic white pigment. 7. The coating composition for forming a light diffusion film according to claim 5, wherein the white particles are a mixture of an inorganic white pigment and an organic white pigment. 8. A step of applying the light-diffusing film-forming coating liquid composition according to claim 1 to a glass surface, and applying the light-diffusing film-forming coating liquid composition thus applied. A method for forming a light diffusion film, comprising a step of drying. 9. The method for forming a light diffusion film according to claim 8, wherein the glass is a bulb, and the coating composition for forming a light diffusion film is applied to an inner surface of the bulb. 10. A glass product having a light diffusion film formed by applying the coating composition for forming a light diffusion film according to any one of claims 1 to 7. 11. A lighting fixture comprising the glass product according to claim 10.