KR101378187B1 - Light diffusion resin composition with improved weatherability and surface contamination - Google Patents

Abstract

The present invention relates to a light diffusion resin composition having improved weather resistance and surface contamination, and more particularly, 100 parts by weight of a thermoplastic transparent resin (A) and 0.1 to 20 parts by weight of a light diffusing agent (B) including an alkyl acrylate rubber resin. It may include, but the thermoplastic transparent resin (A) is an alkyl acrylate rubber resin, a monomer mixture of a perfluoro acrylate, a (meth) acrylic acid alkyl ester compound and an aromatic vinyl compound, or a copolymer thereof is graft polymerized powder type The present invention relates to a light-diffusion resin composition, which has excellent performance of transmitting or diffusing light, such as direct sunlight, fluorescent lamps, or LEDs, and increases contact angles to weather resistance, water, and oil together with mechanical properties such as impact resistance and processability. Due to this, there is an effect of providing a light diffusion resin composition having improved surface contamination.

Description

Light diffusion resin composition with improved weatherability and surface contamination {LIGHT DIFFUSION RESIN COMPOSITION WITH IMPROVED WEATHERABILITY AND SURFACE CONTAMINATION}

The present invention relates to a light-diffusion resin composition having improved weather resistance and surface contamination properties, and more particularly, to an alkyl acrylate rubber resin as a matrix resin and to lowering the surface energy of the resin by using a perfluorinated acrylate compound. The present invention relates to a light diffusing resin composition having improved surface contamination and excellent light diffusivity, impact strength, processability, and weatherability without using an inhibitor and a surface coating.

In general, a resin composition having light diffusibility is widely used as a material such as a lighting cover, a lighting signboard, a light-emitting switch signboard, and recently, interest has been further improved due to development of the display industry and changes in the lighting industry. In particular, in the case of LED lighting, in order to compensate for the low light distribution of the LED, the light diffusivity must be increased as much as possible, and the light transmittance must be high to prevent the loss of light. In addition, when it is to be used for lighting signs, outdoor billboards, etc., it must have a processability to allow more than a certain degree of impact strength and extrusion of large objects, and in particular, it must have good surface contamination against external contaminants.

In order to achieve the above object, in general, the light diffusing resin composition is prepared by adding a light diffusing agent to the base resin (matrix resin) in order to secure the light diffusion and light transmittance. At this time, thermoplastic transparent resins such as methacryl resin, styrene resin and polycarbonate resin are used as the matrix resin. However, the above-mentioned thermoplastic transparent resin is limited in use due to the properties of the resin herein. That is, methacryl-based resin and styrene-based resin has a problem of breaking well because of low impact strength. In order to overcome these disadvantages, Korean Patent Application No. 2002-0086995 suggested a method of using an acrylic impact modifier together with methacryl-based resin, but the impact strength was improved to a very limited impact strength of 3 or less.

On the other hand, when the polycarbonate resin is used, the impact strength is excellent, but because the workability is very low, complex processing was not possible.

On the other hand, Korean Patent Registration No. 0511487 describes a light-diffusion laminated resin sheet in which a methyl methacrylate resin or a styrene resin and a methyl methacrylate resin or a styrene resin containing a rubbery polymer are laminated in two layers. However, there is a disadvantage that a complex manufacturing process for manufacturing a multi-layer sheet.

In addition, US Pat. No. 4,767,833, Japanese Patent No. 11-147920, and European Patent No. 1045883 introduce acrylic resins or methacrylic acid alkyl esters to ABS resins to provide excellent impact resistance, processability, etc. There is a problem in that the light resistance is not good, can not be used for outdoor use, the physical properties are greatly reduced with time. In order to improve such weather resistance and thermal stability, the resin is prepared by adding an additive such as a heat stabilizer and a UV stabilizer to the resin, but it is not a fundamental measure.

In addition, surface contamination is likely to occur due to the surface adhesion of static electricity and contaminants. In contrast, conventionally, a technology for expressing antistatic properties by introducing an antistatic agent has been developed. However, when an excessive amount of the antistatic agent is used, there is a problem in that the transparency is seriously degraded and staining due to the antistatic agent that has escaped to the surface occurs.

Alternatively, the surface is coated. However, due to the addition of the coating process, there is a problem in that the process step is increased, and defects that become uneven during coating and difficulty in recycling after the coating process are difficult.

Accordingly, there has been a demand for the development of a light diffusing resin excellent in workability, impact strength, weather resistance and surface contamination.

In order to solve the problems of the prior art as described above, the inventors of the present invention, in the preparation of the light-diffusion resin composition, the alkyl acrylate rubber resin as a matrix resin and using the perfluorinated acrylate compound to the surface energy of the resin By lowering it was confirmed that the surface contamination is improved without using an antistatic agent and surface coating and excellent in light diffusivity, impact strength, processability, weather resistance, and completed the present invention based on this.

That is, an object of the present invention is to provide a light-diffusion resin composition having an alkyl acrylate rubber resin as a matrix resin and blending an appropriate perfluorinated acrylate compound thereto with excellent impact strength, processability and weather resistance.

In order to achieve the above object,

100 parts by weight of a thermoplastic transparent resin (A) containing an alkyl acrylate rubber resin and 0.1 to 20 parts by weight of a light diffusing agent (B),

The thermoplastic transparent resin (A) is a light type, characterized in that the monomer mixture of the perfluoro acrylate, the (meth) acrylic acid alkyl ester compound and the aromatic vinyl compound, or a copolymer thereof, in the alkyl acrylate rubber resin is graft polymerized powder type. It provides a diffusion resin composition.

Hereinafter, the present invention will be described in detail.

In the present invention, an alkyl acrylate rubber resin is used as a matrix resin, and an appropriate perfluorinated acrylate compound is added thereto as one technical feature. The fluorine contained in the perfluorine acrylate has a high electron density, a small atomic radius, and a strong electronegativity, thereby forming a strong fluorine-carbon bond.

Due to these characteristics, the surface free energy of the perfluorinated alkyl group is very low, such as 6 dyne / cm, which repels both water and oil, thereby improving surface contamination.

Specifically, the alkyl acrylate rubber resin is characterized in that it comprises 100 parts by weight of a thermoplastic transparent resin (A) containing a perfluorinated acrylate component and 0.1 to 20 parts by weight of a light diffusing agent (B).

The thermoplastic transparent resin (A) is 10 to 40 parts by weight of the alkyl acrylate rubber resin (based on solids), 3 to 20 parts by weight of the perfluorinated acrylate component, 10 to 50 parts by weight of the (meth) acrylic acid alkyl ester compound compound, and aromatic The monomer mixture of 10 to 30 parts by weight of the vinyl compound is graft polymerized.

Since the alkyl acrylate rubber resin is provided as a polymer solution in the form of a latex containing an insoluble component, the alkyl acrylate rubber resin used for preparing the matrix resin in the present invention has a composition ratio as an insoluble solid content, that is, a gel content in the latex polymer. It is shown.

When the amount of the alkyl acrylate rubber resin is less than 10 parts by weight, the light diffusable composition is poor in terms of impact resistance and is easily broken, and when it contains more than 40 parts by weight, the finished product produced from the light diffusion composition is soft and easily damaged.

At this time, the alkyl acrylate rubber resin is preferably an average particle diameter of 600 to 5000 kPa. Outside the above range, it is not preferable in terms of impact resistance and workability. In addition, the kind is not limited thereto, but methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, and the like, and butyl acrylate is mainly used.

In addition, as a perfluoro acrylate compound, it is not limited to this, Perfluoro butyl ethyl methacrylate, perfluoro pentyl ethyl methacrylate, perfluorohexyl ethyl methacrylate, perfluoroheptyl ethyl methacrylate, Perfluorooctylethyl methacrylate may be used, but in particular, it is preferable to use perfluorooctylethyl methacrylate, and when the content is less than 3 parts by weight, the perfluorine acrylate content is extremely low, and the surface The perfluorine groups oriented are so small that the effect of lowering the surface energy is inadequate, and when it exceeds 20 parts by weight, a homopolymer of perfluorinated acrylate is formed during the polymerization, thereby decreasing transparency.

In addition, the refractive index of the graft polymer prepared from the monomer mixture is different from the refractive index of the alkyl acrylate rubber resin when it is out of the range of 10 to 50 parts by weight of the (meth) acrylic acid alkyl ester compound compound and 10 to 30 parts by weight of the aromatic vinyl compound. Since this affects the transparency of the thermoplastic transparent resin, it is not preferable. As said (meth) acrylic-acid alkylester compound, (meth) acrylic-acid methyl ester, (meth) acrylic acid ethyl ester, (meth) acrylic acid propyl ester, (meth) acrylic acid 2-ethylhexyl ester, (meth) acrylic acid decyl ester, and (meth) The methacrylate may be one or more selected from lauryl ester, and methyl methacrylate, which is (meth) acrylic acid methyl ester, is particularly preferable.

In the light-diffusion resin composition of the present invention, the alkyl acrylate rubber resin, the perfluorinated acrylate compound, the (meth) acrylic acid alkyl ester compound compound, the aromatic vinyl compound, and the monomer of the vinyl cyan compound, if necessary, in the thermoplastic transparent resin (A). The refractive index difference between the mixtures is preferably 0.005 or less in view of imparting transparency of the thermoplastic transparent resin (A), and it is more preferable that the refractive indexes match. When the refractive index difference exceeds 0.005, the thermoplastic transparent resin (A) is no longer It is not desirable to have transparency.

In addition, the copolymer of a perfluoro acrylate compound, the (meth) acrylic-acid alkylester compound compound, and an aromatic vinyl compound can also be graft-polymerized to the said alkylacrylate rubber resin. In this case, the copolymer or the monomer mixture may further include 1 to 20 parts by weight of a vinyl cyan compound. When the acrylonitrile or methacrylonitrile is less than 1 part by weight as the vinyl cyan compound, the impact strength improvement effect is small, and when it exceeds 20 parts by weight, the color is yellowed, which is not preferable because it adversely affects the color of the final product. .

Meanwhile, the aromatic vinyl compound may be at least one selected from styrene, α-methylstyrene, p-methylstyrene, and vinyltoluene, and styrene is particularly preferable.

That is, in the present invention, the alkyl acrylate rubber resin is a main chain, and the remaining compounds, that is, perfluoro acrylate, a (meth) acrylic acid alkyl ester compound, an aromatic vinyl compound, and a vinyl cyan compound are graft-polymerized, if necessary, The graft polymerized compounds may be directly graft polymerized in the main chain of the alkyl acrylate rubber resin as a monomer or provided in a pre-polymerized state to be graft polymerized.

The thermoplastic transparent resin (A) in the light diffusing resin composition of the present invention may be prepared by an emulsion polymerization or a complex method of emulsion polymerization and bulk polymerization. For example, in the emulsion polymerization method, 3 to 20 parts by weight of the perfluorinated acrylate compound, 10 to 50 parts by weight of the (meth) acrylic acid alkyl ester compound, and 10 to 30 parts by weight of the aromatic vinyl compound are contained in 10 to 40 parts by weight of the alkyl acrylate rubber resin. The parts by weight are graft polymerized. In addition, the vinylcyan compound may be further subjected to 1 to 20 parts by weight graft polymerization. The polymer obtained by the above production method may be recovered in the form of a dry powder by a process of coagulation, dehydration and drying as a latex form.

In addition, for example, the composite method of emulsion polymerization and bulk polymerization for the preparation of the thermoplastic transparent resin (A) is to produce a polymer in dry powder form by the above-mentioned emulsion polymerization method and on the other hand to have the same refractive index as the polymer Copolymers of perfluorinated acrylate compounds, methacrylic acid alkyl esters and aromatic compounds are prepared.

Thereafter, the polymer in the dry powder form and the copolymer are kneaded through an extruder to prepare a thermoplastic transparent resin (A). The complex method of the emulsion polymerization and the bulk polymerization has a disadvantage in that the manufacturing process is complicated and the initial equipment is made as compared with the case of using the emulsion polymerization alone, but the content of the alkyl acrylate rubber resin in the thermoplastic transparent resin (A) is controlled. There is an advantage that easy and reduced manufacturing costs.

In addition, the light diffusing agent (B) is a spherical type having an average particle diameter of 0.1 to 100 µm, and may be used alone or in combination with an organic or inorganic diffusing agent. When the average particle diameter is exceeded, a preferable light diffusing degree is not obtained. It is not preferable, and it is more preferable that the said average particle diameter is 1-10 micrometers.

Examples of the double inorganic diffusion agent include at least one selected from the group consisting of calcium carbonate, barium sulfate, titanium dioxide, aluminum hydroxide, silica, glass, talc, mica, white carbon, magnesium oxide and zinc oxide, and the average The particle diameter may be 0.1 to 20 μm.

In addition, as the organic diffusing agent, at least one selected from acrylic resins, siloxane resins, polycarbonate resins, or styrene resins having an average particle diameter of 1 to 100 μm may be used, and as illustrated in the following examples, polystyrene, It is more preferable to use polymethylmethacrylate or a copolymer prepared therefrom.

It is preferable that the refractive index difference between the thermoplastic transparent resin (A) and the light diffusing agent (B) included in the light diffusing resin composition of the present invention is 0.005 or more. The problem arises, It is more preferable that the difference of refractive index is 0.01 or more.

If the light diffusing agent is used in an amount of less than 0.1 part by weight based on 100 parts by weight of the thermoplastic transparent resin (A), the desired level of light diffusion cannot be obtained. When the light diffusing agent is used in excess of 20 parts by weight, the relative concentration of the thermoplastic transparent resin (A) It is preferable to use within the range of 0.1 to 20 parts by weight since it lowers the impact resistance of the product and results in a significantly lower light transmittance.

In addition to the above components, the light diffusing resin composition of the present invention may include a heat stabilizer, a UV stabilizer, a fluorescent brightener, and the like within a range that does not affect physical properties. The composition is uniformly dispersed using a single screw extruder, a twin screw extruder, or a Banbury mixer, and then passed through a water bath or cut to prepare a light diffusing resin in pellet form.

According to the present invention, the light diffusing resin obtained in a simple manufacturing process is excellent in the ability to transmit or diffuse light such as direct sunlight, fluorescent lamps or LEDs, and has excellent mechanical properties such as impact resistance, processability, and the like. The improved surface contamination due to the increased contact angles for both oils has an excellent advantage.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but it is to be understood that the present invention is not limited to the following Examples.

Manufacturing example  1: emulsion polymerization alone

100 parts by weight of ion-exchanged water, 30 parts by weight of ion-exchanged water, 0.6 parts of sodium oleate emulsifier, 3 parts by weight of perfluorooctylethyl methacrylate, in 30 parts by weight of a butyl acrylate latex polymer (70% insoluble gel content, average particle diameter of 0.3 μm), 49 parts by weight of methyl methacrylate, 13 parts by weight of styrene, 5 parts by weight of acrylonitrile, 0.5 parts by weight of tertiary dodecyl mercaptan, 0.048 parts by weight of sodium pyrophosphate, 0.012 parts by weight of dextrose, 0.001 weight of ferrous sulfide Parts and cumene hydroperoxide 0.10 parts by weight were continuously administered at 71 ° C. for 4 hours and reacted. After the reaction was heated to 74 ℃ aging for 1.5 hours and the reaction was terminated. At this time, the polymerization conversion rate was 98.0% and the solidified content was 0.18%.

Next, it solidified and wash | cleaned with the calcium chloride aqueous solution, and obtained powdery thermoplastic transparent resin (A-1). The refractive index of the obtained thermoplastic transparent resin was 1.508 and the weight average molecular weight was 100,000.

Manufacturing example  2: complex use of emulsion polymerization and bulk polymerization

(1) 40 parts by weight of a butyl acrylate latex polymer (70% insoluble gel content, average particle diameter of 0.3 ㎛), 20 parts by weight of perfluorooctylethyl methacrylate, 25 parts by weight of methyl methacrylate, 12 parts by weight of styrene Part, except using 3 parts by weight of acrylonitrile, a thermoplastic transparent resin was synthesized in the same manner as in Preparation Example 1.

(2) The average reaction time of a raw material obtained by mixing 75 parts by weight of methyl methacrylate, 15 parts by weight of styrene, and 10 parts by weight of acrylonitrile was mixed with 30 parts by weight of toluene as a solvent and 0.15 parts by weight of differential dodecyl mercaptan as a molecular weight regulator. The reaction temperature was continuously maintained at 148 ° C. for 3 hours. The polymer solution discharged from the reaction tank was heated in a preheating tank and the unreacted monomers were volatilized in the volatilization tank.

Then, to maintain a temperature of 210 ℃ to prepare a copolymer in pellet form using a polymer transfer pump extrusion machine.

(3) After mixing 75 parts by weight of the thermoplastic transparent resin of (1) and 25 parts by weight of the copolymer of (2) in a mixer, using a twin-screw extruder at a cylinder temperature of 220 ℃ using a pellet-shaped thermoplastic transparent resin (A -2) was prepared. The weight average molecular weight of the prepared copolymer was 105,000, the refractive index was 1.508.

Comparative Manufacturing Example  One

The same procedure as in Preparation Example 1 was repeated except that 2 parts by weight of perfluorooctylethyl methacrylate, 50 parts by weight of methyl methacrylate, 13 parts by weight of styrene, and 5 parts by weight of acrylonitrile were used. -3) was obtained. The refractive index of the obtained thermoplastic transparent resin was 1.508, and the weight average molecular weight was 99,000.

Comparative Manufacturing Example  2

The same procedure as in Preparation Example 1 was repeated except that 21 parts by weight of perfluorooctylethyl methacrylate, 29 parts by weight of methyl methacrylate, 15 parts by weight of styrene, and 5 parts by weight of acrylonitrile were used. -4) was obtained. The refractive index of the obtained thermoplastic transparent resin was 1.508, and the weight average molecular weight was 95,000.

Comparative Manufacturing Example  3

Butadiene latex polymer 30 parts by weight (solvent-insoluble gel content 70%, average particle size 0.3 ㎛), 3 parts by weight of perfluorooctylethyl methacrylate, 45 parts by weight of methyl methacrylate, 18 parts by weight of styrene A thermoplastic transparent resin (A-5) was synthesized in the same manner as in Preparation Example 1, except that 4 parts by weight of nitrile was used. The weight average molecular weight of the prepared copolymer was 100,000 and the refractive index was 1.517.

Comparative Manufacturing Example  4

The same procedure as in Preparation Example 1 was repeated except that 52 parts by weight of methyl methacrylate, 13 parts by weight of styrene, and 5 parts by weight of acrylonitrile were used to obtain a transparent resin (A-6). The refractive index of the obtained thermoplastic transparent resin was 1.508, and the weight average molecular weight was 99,000.

The pellets were injected to prepare specimens, and physical properties were measured in the following manner.

1.light transmittance ( Total Transmittance ) The total light transmittance of the 2 mm sheet was measured using ASTM D-1003.

2. Transparency ( Haze ) : The light diffusivity was measured by measuring the haze value of a 2 mm sheet using ASTM D-1003.

3. Weather resistance : The resin was left for 400 hours at 83 ° C. and a water spray cycle of 18 minutes / 120 minutes in a wearometer (Weatherometer, Ci3A, ATLAS), and then the gloss was measured.

4. Surface energy : The contact angles of distilled water and hexadecane were measured by the surface energy measuring instrument of Korea SEO.

5. Resin surface appearance : According to visual observation, the surface of the resin was marked as follows: good, △ good, X bad, and good.

division transparency
(Haze) Light transmittance
(Tt) Weatherability Surface appearance Distilled water
Contact angle Hexadecane
Contact angle Production Example 1 2.7 89.3 90 ○ 85 40 Production Example 2 3.3 86.7 93 △ 90 42 Comparative Preparation Example 1 2.6 90.0 90 ○ 80 36 Comparative Production Example 2 3.9 80.5 93 X 96 45 Comparative Production Example 3 2.4 90.5 63 ○ 84 40 Comparative Production Example 4 2.5 90.2 90 ○ 73 30

As shown in Table 1, in Preparation Examples 1 and 2, the transparency and the total light transmittance (Tt) were high and the contact angles with water and oil were expressed. On the other hand, in Comparative Preparation Example 1, the contact angle improvement between water and oil is insignificant, and in Comparative Preparation Example 2, the contact angle between water and oil may be high, but the transparency and surface appearance may be deteriorated. In addition, in Comparative Preparation Example 3, the weather resistance was not good, and in Comparative Preparation Example 4, contamination with water and oil was not good.

Example  1-3 and Comparative Example  1-3

The thermoplastic transparent resin (A) of Preparation Examples 1 and 2 and the light diffusing agent (B) of the following Table 2 were mixed in the same ratio as in Table 3 below, and 0.1 parts by weight of the lubricant and 0.2 parts by weight of the antioxidant were administered at 220 ° C. Prepared in pellet form using a twin screw extruder at cylinder temperature.

division Average particle size (㎛) Appearance Refractive index B-1 7 Polystyrene (PS) 1.59 B-2 7 Polymethylmethacrylate (PMMA) 1.495 B-3 7 PS-PMMA (20:80) copolymer 1.512 B-4 20 Polystyrene (PS) 1.59 B-5 150 Polymethylmethacrylate (PMMA) 1.495

division A-1 A-2 B-1 B-2 B-3 B-4 B-5 Example 1 100 - 5 - - - - Example 2 100 - - 5 - - - Example 3 - 100 - - - 10 - Comparative Example 1 - 100 - - 10 - - Comparative Example 2 100 - - - - - 5 Comparative Example 3 100 - 30 - - - -

Physical property measurement results for the light diffusion resin obtained in Table 3 are summarized in Table 4 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Haze 88 81 82 29 41 91 Light transmittance (Tt) 70 80 85 86 85 34

As shown in Table 4, in the case of Example 1-3, the light diffusivity (haze) and the total light transmittance (Tt) were shown to be high, whereas in Comparative Example 1, the thermoplastic transparent resin (A) and the light diffusing agent (B) Has a high transmittance (Tt) but a poor light diffusivity. In Comparative Example 2, the difference in refractive index between the thermoplastic transparent resin (A) and the light diffusing agent (B) is 0.004. In Comparative Example 3, the average particle diameter of the light diffusing agent (B) was too large to obtain a desired level of light diffusing characteristics.

Claims (12)

100 parts by weight of a thermoplastic transparent resin (A) containing an alkyl acrylate rubber resin and 0.1 to 20 parts by weight of a light diffusing agent (B),
The thermoplastic transparent resin (A) is a powder type in which a monomer mixture of a perfluoro acrylate, an alkyl ester of (meth) acrylic acid and an aromatic vinyl compound, or a copolymer thereof is grafted to an alkyl acrylate rubber resin.
Light diffusion resin composition.
The method of claim 1,
The thermoplastic transparent resin (A) is 10 to 40 parts by weight of the alkyl acrylate rubber resin, 3 to 20 parts by weight of the perfluoro acrylate component, 10 to 50 parts by weight of the (meth) acrylic acid alkyl ester compound compound, and 10 to aromatic vinyl compound 30 parts by weight of the monomer mixture or copolymer thereof is characterized in that the graft polymerization
Light diffusion resin composition.
The method of claim 1,
The thermoplastic transparent resin (A) further comprises a vinyl cyan compound, characterized in that
Light diffusion resin composition.
3. The method of claim 2,
The thermoplastic transparent resin (A) further comprises 1 to 20 parts by weight of a vinyl cyan compound, characterized in that
Light diffusion resin composition.
The method of claim 1,
The perfluorine acrylate compound may be perfluorobutylethyl methacrylate, perfluoropentylethyl methacrylate, perfluorohexylethyl methacrylate, perfluoroheptylethyl methacrylate, perfluorooctylethyl methacrylate Characterized in that selected from the rate
Light diffusion resin composition.
The method of claim 1,
The difference in refractive index between the thermoplastic transparent resin (A) and the light diffusing agent (B) is characterized in that 0.005 or more
Light diffusion resin composition.
The method of claim 1,
The light diffusing agent is a spherical type having an average particle diameter of 1 to 100 μm, characterized in that at least one selected from acrylic resins, siloxane resins, polycarbonate resins or styrene resins.
Light diffusion resin composition.
8. The method of claim 7,
The light diffusing agent is polystyrene, polymethyl methacrylate, or a copolymer thereof
Light diffusion resin composition.
The method of claim 1,
The light diffusing agent is a spherical type having an average particle diameter of 0.1 to 20 μm, selected from the group consisting of calcium carbonate, barium sulfate, titanium dioxide, aluminum hydroxide, silica, glass, talc, mica, white carbon, magnesium oxide, and zinc oxide. It is characterized by one or more
Light diffusion resin composition.
The method of claim 1,
The thermoplastic transparent resin (A) is 3 to 20 parts by weight of the perfluorinated acrylate compound, 10 to 50 parts by weight of the (meth) acrylic acid alkyl ester compound, 10 to 30 parts by weight of the alkyl acrylate rubber resin, 10 to 30 parts by weight of the alkyl acrylate rubber resin Characterized in that it is obtained as a dry powder form polymer by graft polymerization of parts by weight and then coagulation, dehydration and drying as a latex form.
Light diffusion resin composition.
The method of claim 1,
The thermoplastic transparent resin (A) is 3 to 20 parts by weight of the perfluorinated acrylate compound, 10 to 50 parts by weight of the (meth) acrylic acid alkyl ester compound, 10 to 30 parts by weight of the alkyl acrylate rubber resin, 10 to 30 parts by weight of the alkyl acrylate rubber resin Pellets obtained by graft polymerization in parts by weight and then extruded and kneaded a copolymer of methacrylic acid alkyl ester, aromatic vinyl and vinyl cyan compound into a dry powder form polymer prepared by agglomeration, dehydration and drying as a latex form. It is characterized in that the copolymer
Light diffusion resin composition.
The method according to claim 10 or 11,
The dry powder polymer is characterized in that it further comprises 1 to 20 parts by weight of a vinyl cyan compound
Light diffusion resin composition.