WO2008013143A1 - Composition de résine pour la diffusion de la lumière et plaque de diffusion de la lumière - Google Patents

Composition de résine pour la diffusion de la lumière et plaque de diffusion de la lumière Download PDF

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Publication number
WO2008013143A1
WO2008013143A1 PCT/JP2007/064438 JP2007064438W WO2008013143A1 WO 2008013143 A1 WO2008013143 A1 WO 2008013143A1 JP 2007064438 W JP2007064438 W JP 2007064438W WO 2008013143 A1 WO2008013143 A1 WO 2008013143A1
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WO
WIPO (PCT)
Prior art keywords
resin
resin composition
light diffusing
weight
light diffusion
Prior art date
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PCT/JP2007/064438
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English (en)
Japanese (ja)
Inventor
Kazuto Okamura
Tomonori Kishita
Original Assignee
Nippon Steel Chemical Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nippon Steel Chemical Co., Ltd. filed Critical Nippon Steel Chemical Co., Ltd.
Priority to JP2008526758A priority Critical patent/JP4970451B2/ja
Publication of WO2008013143A1 publication Critical patent/WO2008013143A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/16—Solid spheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/08—Copolymers of styrene
    • C08L25/14—Copolymers of styrene with unsaturated esters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12—Homopolymers or copolymers of methyl methacrylate

Definitions

  • the present invention relates to a resin composition for a light diffusing plate and a light diffusing plate that are widely used for light diffusing applications such as lighting covers and displays.
  • Transparent resins such as polycarbonate resin and acrylic resin can be obtained by adding a diffusing agent having light diffusibility and processing into a sheet or plate shape to obtain a uniform luminance surface.
  • a diffusing agent having light diffusibility and processing into a sheet or plate shape to obtain a uniform luminance surface.
  • Widely used in applications such as type signs and transmissive displays.
  • the demand for light diffusing applications as a surface light source for direct-type backlights for liquid crystal displays or liquid crystal televisions has greatly increased!
  • the light diffusion plate has conventionally been made of transparent resin with carbonated power, barium sulfate, titanium oxide, titanium oxide, talc, My power, aluminum hydroxide, oxidized
  • a method of adding inorganic particles such as magnesium has been proposed.
  • a method of scattering light by adding partially crosslinked polymer fine particles such as styrene polymer particles, acrylic polymer particles, and siloxane polymer particles as organic beads, or a method using these in combination. has been proposed (Patent Document 1).
  • an acrylic resin or styrene resin that forms a matrix phase is used.
  • a polymer such as a methacrylic acid ester-based resin or an amorphous cyclic olefin-based resin as a dispersed phase having a good affinity with a matrix phase resin is once compatible with a transparent resin such as a resin at a high temperature and under a high pressure.
  • Patent Documents 2, 3, 4, and 5 There has been proposed a method of forming a submicron-order fine sea-island structure by phase separation at room temperature and normal pressure.
  • Patent Document 1 Japanese Patent No. 3195543
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-181825
  • Patent Document 3 Japanese Patent Laid-Open No. 10-111402
  • Patent Document 4 Japanese Patent Laid-Open No. 2001-31774
  • Patent Document 5 Japanese Patent Laid-Open No. 2002-228806
  • Patent Document 6 Japanese Patent Laid-Open No. 11-002706
  • organic beads synthesize fine particles by a cross-linking reaction, such as by suspension polymerization, so that the particle size distribution is relatively uniform and the particle size range is abundant. It has become mainstream as an agent.
  • a cross-linking reaction such as by suspension polymerization
  • the polymer composition having a different refractive index is stretched by an extruded sheet, and the aspect ratio is A method has been proposed to increase the diffusion efficiency and increase the diffusion efficiency, but since this method intentionally stretches the dispersed particles by stretching, the ratio of 0.5 or less on the short diameter side increases, and the light transmittance increases. The light diffusion performance is insufficient because of a significant decrease.
  • polymethyl methacrylate and polycarbonate-based materials have a problem of moisture absorption, and the problem of warpage increases as the size increases.
  • the polycarbonate resin has a problem that it is more expensive than an acrylic resin or a styrene resin.
  • the present invention has been made in view of the above problems, and has a high luminance, a high light diffusibility, a light weight, a high intensity light diffusibility, and has low moisture absorption and is unlikely to warp. And it aims at providing the resin composition used for it.
  • the present inventors have suppressed the generation of a dispersed phase having a low particle diameter of 0.5 m or less by melting and mixing a specific resin that does not mix with the matrix resin phase as a dispersed phase, The inventors have found that a diffusion plate having excellent light diffusion performance can be obtained by forming a dispersed phase having a stable particle diameter, and the present invention has been completed.
  • the present invention relates to a dispersed phase that forms a dispersed phase comprising a thermoplastic resin (A) that forms a matrix phase and a completely incompatible thermoplastic resin that does not melt with the thermoplastic resin (A).
  • Resin (B) A resin composition obtained by melt-mixing one or more types of resin, and the shear ratio of shear viscosity of dispersed phase resin (B) (shear viscosity at 0.1 Hz / shear viscosity at 1 Hz) Is a resin composition for a light diffusing plate, characterized by being in the range of 3-6.
  • the present invention provides a thermoplastic resin (A) comprising an aromatic bur resin or a copolymer resin obtained by copolymerizing an aromatic bur compound and an unsaturated carboxylic ester compound, The resin composition for a light diffusing plate as described above, wherein the content of the acid ester compound unit is 0 to 60% by weight and the weight average molecular weight is 100,000-400,000.
  • the thermoplastic resin (A) at least a part of the dispersed phase resin (B) in which polystyrene or a styrene-methyl methacrylate copolymer resin is preferable, has a weight average molecular weight of 100,000 or more.
  • High density polyethylene having a high molecular weight or low density polyethylene having a weight average molecular weight of 80,000 or more is preferably exemplified.
  • the present invention provides a light diffusing plate obtained by molding the above resin composition, wherein 0.5
  • the ratio of the dispersed phase resin (B) having the following particle diameter is 5.0% or less in terms of the particle size distribution of the dispersed phase, and the thickness of the plate is 0.5 to 5 mm. It is a diffusion plate.
  • the light diffusing plate satisfies any one of the following forces, one or more, better performance is provided.
  • the above resin composition One or more organic crosslinked beads or inorganic beads having an average particle diameter of 1.0 to 100 m and 0.001 to 10 parts by weight are blended with 100 parts by weight of resin in the product.
  • the resin composition for a light diffusing plate of the present invention is obtained by dispersing a dispersed phase resin (B) forming a dispersed phase in a thermoplastic resin (A) forming a matrix phase.
  • the thermoplastic resin (A) that forms the matrix phase is not particularly limited as long as it is a thermoplastic resin.
  • polyolefin resin such as polyethylene and polypropylene, polyvinyl chloride, polyvinyl chloride, butyl chloride, and butyl acetate
  • Polyvinyl alcohol resin such as coalesced butyl resin, poly (vinyl acetate), poly (vinyl acetate) such as poly (ethylene acetate), poly (butyl alcohol), poly (ethylene alcohol), poly (ethylene alcohol), poly (methyl methacrylate), methacrylic Acrylic resin such as acid methyl-acrylic acid ester copolymer, polystyrene, styrene Methyl acrylate copolymer, homopolymer or copolymer such as styrene maleic anhydride copolymer, modified polymer, rubber modified styrene resin, etc.
  • thermoplastic resin (A) is a resin that is completely compatible with each other, the thermoplastic resin (A) may consist of a plurality of trees.
  • thermoplastic resin (A) is an aromatic bull compound polymer or a copolymer obtained by copolymerizing an unsaturated carboxylic acid ester and an aromatic bull compound from the viewpoints of light transmittance and hygroscopicity (hereinafter referred to as "a thermoplastic bull compound”). , Also referred to as MS copolymer).
  • the aromatic bur compound giving the aromatic bur compound polymer includes styrene, ⁇ -methyl styrene, ⁇ -methyl styrene, m-methyl styrene, 0-methyl styrene, p-methoxy styrene, 0-methoxy styrene, Examples include p-chlorostyrene, 0-chlorostyrene, 4-butyrpyridine, and 2-butyrpyridine. Of these, styrene and ⁇ -methylstyrene are preferred. Used.
  • aromatic bur compound used in the MS copolymer one or more of the above-mentioned aromatic bur compounds can be used.
  • the unsaturated carboxylic acid ester used for the MS copolymer includes methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, methyl acrylate, acrylic Examples include ethyl acrylate, isopropyl acrylate, butyl acrylate, isobutyl acrylate, t-butyl acrylate, and 2-ethylhexyl acrylate.
  • methyl methacrylate, ethyl methacrylate, butyl methacrylate, and t-butyl methacrylate are preferable, and methyl methacrylate is particularly preferable.
  • These unsaturated carboxylic acid ester compounds can be used singly or in combination.
  • the MS copolymer there is a resin obtained by copolymerization of the above aromatic bur compound and an unsaturated carboxylic acid ester compound, preferably a styrene-methyl methacrylate copolymer resin. Further, the content of the unit derived from the unsaturated carboxylic acid ester compound in the MS copolymer is preferably 60% by weight or less from the viewpoint of hygroscopicity.
  • the thermoplastic resin (A) can be produced by polymerization by a known method.
  • the weight average molecular weight (Mw) of this resin is preferably 100,000 to 400,000. If it is less than 100,000, the fluidity becomes high and the brittleness is likely to occur, so that cracks are likely to occur during processing.
  • the dispersed phase resin (B) that forms the dispersed phase is a thermoplastic resin (A) that forms a matrix phase and is completely incompatible with the thermoplastic resin (A). ) Varies depending on the type.
  • the dispersed phase resin (B) has a shear viscosity ratio (hereinafter referred to as shear viscosity ratio) in the range of 3-6.
  • shear viscosity ratio hereinafter referred to as shear viscosity ratio
  • shear viscosity ratio have the same meaning as the shear shear viscosity ratio, they are also referred to as shear shear viscosity or shear shear viscosity ratio.
  • This shear viscosity ratio refers to the ratio (V / V) between the shear viscosity V measured at a frequency of 0.1 Hz and the shear viscosity V measured at a frequency of 1 Hz for the dispersed phase resin (B) alone.
  • the dispersed phase resin (B) is a thermoplastic resin different from the thermoplastic resin (A) that is completely incompatible with the thermoplastic resin (A), and the dispersed phase resin (B) is used alone.
  • the measured shear shear viscosity ratio is in the range of 3-6.
  • the dispersed phase resin (B) from the viewpoint of refractive index difference, water absorption, and incompatibility, for example, when the thermoplastic resin (A) is an aromatic bur compound or an MS copolymer, a polyolefin resin is preferable. .
  • polyethylene which can easily be increased in molecular weight
  • HDPE high-density polyethylene
  • LDPE low-density polyethylene
  • the molecular weight of HDPE and LDPE is smaller than the above, the shear shear viscosity ratio is 3 or less, and a sufficient light diffusion performance cannot be exhibited due to generation of fine particles when a composition is formed by melt mixing. , Because it is preferable.
  • the dispersed phase resin (B) may be composed of a plurality of resins, for example, a resin formed by blending two or more types of HDPE or LDPE. In this case, if the resins are completely compatible with each other, the properties of the dispersed phase resin (B) may be provided in a compatible state. If they are not compatible, each must have the characteristics of the above dispersed phase resin (B), or the arithmetic average must be within the above range.
  • the blending ratio of the thermoplastic resin (A) and the dispersed phase resin (B) forming the matrix phase varies depending on the desired plate thickness and total light transmittance.
  • the resin composition of the present invention is 2 mm thick
  • the dispersion phase resin (B) is usually used for 100 parts by weight of the thermoplastic resin (A). 2 to; 10 parts by weight, preferably 0.5 to 5 parts by weight.
  • the arithmetic average particle diameter of the dispersed phase in the light diffusing plate comprising the resin composition of the present invention is inevitable to produce fine particles of 0.5 m or less when it falls below 0.8 m. Will drop significantly.
  • the proportion of the dispersed phase resin (B) having a particle size of 0.5 m or less in average particle size is preferably 5.0% or less in terms of the particle size distribution of the dispersed phase, and more preferably 3.0% or less. .
  • the light diffusing plate of the present invention is adjusted so that the total light transmittance is 78 to 82%, preferably 79 to 81% when processed into a 2 mm thick plate-shaped test piece, and 80%
  • the haze is 70% or more, preferably 80% or more. If the haze is less than 70%, the transmitted light emitted from the backlight light source is likely to be uneven when it is finally adjusted to the desired total light transmittance.
  • the total light transmittance varies depending on the amount of the dispersed phase resin (B) added to the resin composition, its refractive index and the dispersed particle size, and is controlled by adjusting these. In addition, when the total light transmittance required for the diffuser plate is different, the amount of the dispersed phase resin (B) and the like change accordingly.
  • the light diffusion plate of the present invention is likely to cause warpage of the diffusion plate due to a difference in water absorption expansion between the light irradiation side and the transmission side of the back surface thereof due to light irradiation with light source power. Therefore, it is preferable that the material has low moisture absorption.
  • the water absorption required for the light diffusing plate is different depending on the size of the light diffusing plate. For example, if it is a medium or large light diffusing plate of 15 inches or more, the water absorption is preferably 0.3% or less. More preferably, it is 0.25% or less.
  • the resin composition of the present invention comprises only the thermoplastic resin (A) and the dispersed phase resin (B), the light diffusion plate obtained by molding the resin composition alone has high brightness, Has high diffusivity.
  • the resin composition of the present invention may be a strong organic diffusing agent such as a polyamide-based resin, a polyester-based resin, a polyolefin-based resin, an unsaturated carboxylic acid ester compound-based resin, or an inorganic-based resin as a third component as necessary.
  • the diffusing agent may be contained.
  • 100 parts by weight of the resin in the resin composition should contain 1.0 or more organic crosslinked beads or inorganic beads having an average particle diameter of 1.0 to 100 m, 0.001 to 10 parts by weight. Is also preferred.
  • the resin composition may include, as necessary, ultraviolet rays within a range not impairing the object of the present invention.
  • Line absorber, antioxidant, heat stabilizer, colorant, plasticizer, mold release agent, antistatic agent, weathering aid, internal lubricant, external lubricant, antistatic agent, flame retardant, light stabilizer, fluorescence It may contain one or more additives such as brighteners! /.
  • the transmitted light may be yellowish and reddish, so that the object of the present invention is not impaired as necessary.
  • one or more pigments, dyes, ultraviolet absorbers, and infrared absorbers may be contained as a transmission light adjusting agent.
  • the light diffusing resin composition of the present invention can be formed into a predetermined shape by injection molding, extrusion molding, blow molding or the like without any particular limitation on the method of processing the light diffusing resin composition into the light diffusion plate.
  • the thickness of the light diffusing plate of the present invention is 0.5 mm or more, which is less affected by stretching because the dispersed particle diameter tends to be small in applications such as films produced by stretching. However, this is not the case when diffusing sheets of 0.5 mm or less are created without stretching, ignoring productivity.
  • the physical properties of the light diffusing plate were evaluated by the following methods.
  • the particle size distribution of the dispersed phase was measured by the volume average diameter, and the arithmetic average particle diameter and the arithmetic standard deviation of the dispersed phase resin (B) were calculated. 0. For the abundance of particles of 5 ⁇ m or less, the integrated value of the existence frequency of particles detected by a laser meter was used.
  • a rotational dynamic viscoelasticity measuring device DAR-50 manufactured by Rörologica Instruments a test piece of ⁇ 25 ⁇ and thickness 2mm is sandwiched between a parallel plate jig of 25 ⁇ and a heating plate, and the frequency is 0.0; Shear shear viscosity is measured at a range of 240 ° C, and the frequency at which the viscosity stabilizes.
  • the shear viscosity ratio at 0.1 Hz and the shear viscosity ratio at 1 Hz that is, by calculating the slope, Non-Yewton liquidity can be compared).
  • the resin used is shown below.
  • High-density polyethylene Nippon Polyethylene Corporation HB315R Mw 200000
  • High density polyethylene Nippon Polyethylene Co., Ltd. HB 1 1 1R Mw 180000
  • High density polyethylene Nippon Polyethylene Corporation HF313 Mw 100000
  • Linear low density polyethylene Nippon Polyethylene Co., Ltd. NF375 Mw 100000
  • the resin used as the matrix phase and the resin used as the dispersed phase were adjusted so that the total light transmittance was 80% in terms of 2mm thickness, and a 40mm ⁇ single screw extruder manufactured by Tanabe Plastic Machinery Co., Ltd. was used. Then, it was melt-kneaded under a barrel temperature of 190 to 240 ° C. and pelletized to obtain a thermoplastic resin composition.
  • a small injection molding machine HM-7 (69kN, cylinder temperature 240 ° C) manufactured by Nissei Plastic Industry Co., Ltd.
  • the test piece of 40 mm X 40 mm X 2 mm was produced using it.
  • test piece was obtained using 100 parts by weight of MS-200 and 1.7 parts by weight of HB111R.
  • Test pieces were obtained using 100 parts by weight of MS-200 and 1.6 parts by weight of NF375.
  • Test pieces were obtained using 100 parts by weight of MS-200 and 0.18 parts by weight of Novatec EA9.
  • Test pieces were obtained using 100 parts by weight of MS-200 and 0.36 parts by weight of VH-001. [0058] Reference Example 1
  • the shear viscosity ratio is the numerical value of the resin that becomes the dispersed phase.
  • the test piece of the example has a haze of about 90% when the total light transmittance is about 80%, is extremely diffusive, and the number of dispersed particles of 0.5 m or less is not detected ( ND) power S component power. Further, it can be seen that the test piece of the comparative example has a haze of 10 to 50%, the diffusion performance is very low, and the number of dispersed particles of 0.5 m or less is 5% or more.
  • the light diffusing resin composition according to the present invention by using a specific dispersed phase resin (B) that does not mix with the thermoplastic resin phase (A), generation of fine particles of 0.5 m or less is extremely possible. It is possible to provide a material that can form a small number of stable dispersed phase particles and that efficiently expresses a light diffusing function.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

Composition de résine pour plaque de diffusion de la lumière qui est beaucoup utilisée dans des applications de diffusion de la lumière, telles qu'un couvercle d'illuminateur et un afficheur ; et plaque de diffusion de la lumière ayant une luminance élevée et un pouvoir de diffusion de la lumière élevé. L'invention concerne une plaque de diffusion de la lumière obtenue en moulant une composition de résine pour plaque de diffusion de la lumière comprenant un mélange d'une résine thermoplastique (A) servant à former une phase matrice et au moins une résine en phase dispersée (B) servant à former une phase dispersée, la résine en phase dispersée (B) étant constituée d'une résine thermoplastique de type totalement incompatible non miscible avec la résine thermoplastique (A) et la résine en phase dispersée (B) présentant un rapport des viscosités de cisaillement, à savoir un rapport (viscosité de cisaillement à une fréquence de 0,1 Hz)/(viscosité de cisaillement à une fréquence de 1 Hz) de 3 à 6. La plaque de diffusion de la lumière est une plaque ayant un pouvoir de diffusion de la lumière obtenue en moulant la composition de résine sous une forme plane.
PCT/JP2007/064438 2006-07-25 2007-07-23 Composition de résine pour la diffusion de la lumière et plaque de diffusion de la lumière WO2008013143A1 (fr)

Priority Applications (1)

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JP2008526758A JP4970451B2 (ja) 2006-07-25 2007-07-23 光拡散用樹脂組成物及び光拡散板

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JP2006-202497 2006-07-25
JP2006202497 2006-07-25

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KR (1) KR20090063205A (fr)
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Cited By (1)

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CN112321960A (zh) * 2021-01-04 2021-02-05 佛山市德联邦盛光电科技股份有限公司 增韧母粒及其制备方法、用于制备扩散板的材料和扩散板

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KR101331348B1 (ko) * 2011-11-29 2013-11-26 롯데케미칼 주식회사 고밀도 폴리올레핀계 광확산제를 포함한 폴리카보네이트 광확산수지 조성물

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JPH08334607A (ja) * 1995-06-07 1996-12-17 Fuji Photo Film Co Ltd 光学用透明プラスチックフイルム
JP2002267812A (ja) * 2001-03-13 2002-09-18 Daicel Chem Ind Ltd 光散乱フィルム及びそれを用いた液晶表示装置

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JP3159280B2 (ja) * 1993-06-11 2001-04-23 ダイセル化学工業株式会社 スチレン系樹脂シート成形物
JP2000297219A (ja) * 1999-02-09 2000-10-24 Tosoh Corp 熱可塑性樹脂組成物
JP2001031774A (ja) * 1999-07-21 2001-02-06 Daicel Chem Ind Ltd 透過型光散乱シート及びその製造方法
US6727313B2 (en) * 2001-01-17 2004-04-27 3M Innovative Properties Company Polymeric compositions and articles with anisotropic light scattering and methods of making and using

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JPH08334607A (ja) * 1995-06-07 1996-12-17 Fuji Photo Film Co Ltd 光学用透明プラスチックフイルム
JP2002267812A (ja) * 2001-03-13 2002-09-18 Daicel Chem Ind Ltd 光散乱フィルム及びそれを用いた液晶表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112321960A (zh) * 2021-01-04 2021-02-05 佛山市德联邦盛光电科技股份有限公司 增韧母粒及其制备方法、用于制备扩散板的材料和扩散板

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JPWO2008013143A1 (ja) 2009-12-17
TW200819489A (en) 2008-05-01
TWI398476B (zh) 2013-06-11
JP4970451B2 (ja) 2012-07-04
KR20090063205A (ko) 2009-06-17

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