WO2013151131A1 - Composition de résine pour élément de guidage de lumière, et élément de guidage de lumière obtenu par moulage de celle-ci - Google Patents

Composition de résine pour élément de guidage de lumière, et élément de guidage de lumière obtenu par moulage de celle-ci Download PDF

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Publication number
WO2013151131A1
WO2013151131A1 PCT/JP2013/060328 JP2013060328W WO2013151131A1 WO 2013151131 A1 WO2013151131 A1 WO 2013151131A1 JP 2013060328 W JP2013060328 W JP 2013060328W WO 2013151131 A1 WO2013151131 A1 WO 2013151131A1
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WO
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Prior art keywords
light guide
resin composition
guide member
unsaturated carboxylic
carboxylic acid
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PCT/JP2013/060328
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English (en)
Japanese (ja)
Inventor
礒川　素朗
俊之 田中
伊藤　俊宏
佐藤　正史
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三井・デュポンポリケミカル株式会社
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Priority to JP2014509205A priority Critical patent/JP6367114B2/ja
Publication of WO2013151131A1 publication Critical patent/WO2013151131A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0869—Acids or derivatives thereof
    • C08L23/0876—Neutralised polymers, i.e. ionomers

Definitions

  • the present invention relates to a resin composition for a light guide member and a light guide member obtained by molding the resin composition.
  • an illumination device one that emits light from a light source such as a light emitting diode incident on a light guide member is known.
  • a transparent resin having a high light transmittance is used for the light guide member used in such an illumination device.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2009-298994 has a repeating unit represented by a specific structure as an optical member such as a lens, a light guide, and an optical disk, and has a tin content of 0.5 ppm or less.
  • Polycarbonate resin compositions containing certain polycarbonate copolymers are described. It is described that when this polycarbonate resin composition is used, it is possible to obtain a molded product in which yellowing that occurs during molding at a high temperature and discoloration in a durability test are reduced.
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2009-244873 discloses a polymer block comprising a (meth) acrylic acid alkyl ester unit on a matrix comprising a methacrylic resin (A) having 50% by mass or more of a methyl methacrylate unit ( a block copolymer (B) having a polymer block (b) composed of a) and a conjugated diene compound unit is dispersed, and the block copolymer (B) is added to 100 parts by mass of the methacrylic resin (A).
  • a light guide made of a methacrylic resin composition in an amount of 1 to 80 parts by mass is described.
  • this light guide uses a methacrylic resin composition having excellent molding processability, it is easy to form a high light transfer pattern of a fine light-scattering pattern on the exit surface and the opposite exit surface, and transparency, i.e. It describes that the optical performance, surface hardness, heat resistance, and rigidity are good.
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2006-342211 discloses an average particle diameter of 5 to 20 ⁇ m and an aspect ratio of 100 parts by mass of the transparent thermoplastic resin (A) as a transparent thermoplastic resin composition for optical applications.
  • a transparent thermoplastic resin composition comprising 0.001 to 0.01 parts by mass of silica flakes (B) made of flaky silica glass having a ratio of 5 to 300, wherein the silica flakes (B) are average grains
  • a transparent thermoplastic resin composition in which titania particles (C) having a diameter of 10 to 300 nm are dispersed and contained is described.
  • This transparent thermoplastic resin composition is described as having high light diffusibility and high light transmittance, and excellent in quality and productivity such as light resistance, thermal stability, and moldability.
  • the light guide member has been required to have a characteristic of emitting incident light efficiently and uniformly (surface).
  • this invention makes it a subject to provide the resin composition for light guide members which can implement
  • the inventors of the present invention have further intensively studied design guidelines for solving the above problems. As a result, the inventors have found that the scale called the luminescence index devised by the present inventors is effective as such a design guideline, and have reached the present invention.
  • a resin composition for a light guide member containing a synthetic resin In a 1 mm thick sheet made of the above synthetic resin, The total light transmittance (A) measured in accordance with JIS K7361-1 is 80% or more, The emission index (B / A) defined by the ratio of haze (B) measured according to JIS K7136 to the total light transmittance (A) is 1.2 ⁇ 10 ⁇ 2 or more and 3.0 ⁇ 10 ⁇ The resin composition for light guide members which is 1 or less is provided.
  • a light guide member obtained by molding the resin composition for a light guide member.
  • a resin composition for a light guide member that can realize a light guide member that can emit (surface) light with high luminance and uniformly over the entire light guide member.
  • the resin composition for a light guide member in the present embodiment includes a synthetic resin that satisfies the following requirements.
  • the total light transmittance (A) measured according to JIS K7361-1 when a 1 mm thick sheet made of a synthetic resin is produced is 80% or more, preferably 85% or more, more preferably 88 % Or more.
  • the emission index (B / A) defined by the ratio of haze (B) measured in accordance with JIS K7136 to the total light transmittance (A) is 1.2 ⁇ 10 ⁇ 2 or more, preferably 2. It is 0 ⁇ 10 ⁇ 2 or more, more preferably 3.0 ⁇ 10 ⁇ 2 or more, and particularly preferably 5.0 ⁇ 10 ⁇ 2 or more.
  • the emission index (B / A) is 3.0 ⁇ 10 ⁇ 1 or less, preferably 2.5 ⁇ 10 ⁇ 1 or less, more preferably 2.0 ⁇ 10 ⁇ 1 or less, particularly Preferably, it is 1.0 ⁇ 10 ⁇ 1 or less.
  • the resin composition for a light guide member in the present embodiment has a total light transmittance (A) of 80% or more, preferably 85% or more, more preferably 88% or more.
  • A total light transmittance
  • FIG. 1 is a diagram for explaining the technical significance of the emission index.
  • the emission index (B / A) is 1.2 ⁇ 10 ⁇ 2 or more, preferably 2.0 ⁇ 10 ⁇ 2 or more, more preferably 3 0.0 ⁇ 10 ⁇ 2 or more, particularly preferably 5.0 ⁇ 10 ⁇ 2 or more.
  • the luminescence index B / A is equal to or higher than the lower limit, a high-luminance light guide member can be obtained.
  • the emission index (B / A) is 3.0 ⁇ 10 ⁇ 1 or less, preferably 2.5 ⁇ 10 ⁇ 1 or less, more preferably. Is 2.0 ⁇ 10 ⁇ 1 or less, particularly preferably 1.0 ⁇ 10 ⁇ 1 or less.
  • the light emission index (B / A) is equal to or less than the upper limit, a light guide member that can emit light uniformly over the entire light guide member can be obtained.
  • a conventional light guide member has a trade-off relationship between emitting incident light with high luminance and emitting light uniformly over the entire light guide member. This relationship could not be improved by adding filler alone.
  • the present inventors conducted extensive studies on the light-emitting property of the light guide member while changing the type of synthetic resin to be used. As a result, the above trade-off relationship can be improved when the synthetic resin satisfying a specific range is used for the emission index (B / A), and the incident light has high brightness and is uniform over the entire light guide member.
  • the present invention has been completed by finding that a light guide member capable of emitting light can be realized.
  • the synthetic resin is not particularly limited as long as the above-described total light transmittance and emission index satisfy the scope of the present invention, but an ethylene / unsaturated carboxylic acid copolymer containing ethylene and an unsaturated carboxylic acid as a copolymerization component.
  • a polymer ionomer resin is preferred.
  • the ionomer resin refers to a resin obtained by using an ethylene / unsaturated carboxylic acid copolymer as a base polymer and neutralizing a carboxyl group in the ethylene / unsaturated carboxylic acid copolymer with a metal ion.
  • the copolymerization amount of the unsaturated carboxylic acid is preferably 5% by mass or more and 25% by mass from the viewpoint of balance between transparency and mechanical properties. It is preferable to use a copolymer of 6 mass% or more and 23 mass% or less, particularly preferably 7 mass% or more and 20 mass% or less.
  • Examples of the unsaturated carboxylic acid in the ethylene / unsaturated carboxylic acid copolymer include acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, maleic anhydride, itaconic anhydride, monomethyl maleate, and maleic acid. And monoethyl.
  • acrylic acid and methacrylic acid is preferable from the viewpoint of polymer productivity and hygiene.
  • these unsaturated carboxylic acids may be used individually by 1 type, and may be used in combination of 2 or more type.
  • the ethylene / unsaturated carboxylic acid copolymer may be not only a binary copolymer of ethylene and an unsaturated carboxylic acid but also a multi-component copolymer in which other monomers are arbitrarily copolymerized. .
  • copolymer components that may be optionally copolymerized include, for example, vinyl esters such as vinyl acetate and vinyl propionate; methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, and acrylic acid n -Unsaturated carboxylic esters such as butyl, isooctyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, dimethyl maleate, diethyl maleate; carbon monoxide; sulfur dioxide It is done.
  • vinyl esters such as vinyl acetate and vinyl propionate
  • acrylic acid n -Unsaturated carboxylic esters such as butyl, isooctyl acrylate, 2-ethylhex
  • unsaturated carboxylic acid esters are preferable, and at least one selected from the group consisting of acrylic acid esters and methacrylic acid esters is particularly preferable.
  • these other copolymerization components may be used individually by 1 type, and may be used in combination of 2 or more type.
  • the ethylene / unsaturated carboxylic acid copolymer further contains an unsaturated carboxylic acid ester such as an acrylic acid ester and a methacrylic acid ester as a copolymerization component, it is preferable in terms of improving the flexibility of the light guide member.
  • unsaturated carboxylic acid ester such as acrylic acid ester and methacrylic acid ester
  • the luminescent property of a light guide member can be improved more.
  • the copolymerization amount of the unsaturated carboxylic acid ester is preferably 5% by mass or more and 25% by mass or less, more preferably They are 8 mass% or more and 23 mass% or less, Especially preferably, they are 10 mass% or more and 20 mass% or less.
  • the ethylene / unsaturated carboxylic acid copolymer has a melt flow rate at 190 ° C. under a load of 2160 g (according to JIS K7210-1999), preferably 0.1 g / 10 min to 50 g / 10 min, Preferably they are 0.5 g / 10min or more and 10 g / 10min or less. MFR within the above range is preferable in terms of formability and workability.
  • the ethylene / unsaturated carboxylic acid copolymer as a base polymer of such an ionomer resin can be generally produced by a known method.
  • ethylene and an unsaturated carboxylic acid can be radicalized at high temperature and high pressure. It can be obtained by copolymerization.
  • the ethylene / unsaturated carboxylic acid copolymer may be a commercially available product.
  • the degree of neutralization of the carboxyl group of the ethylene / unsaturated carboxylic acid copolymer is preferably 10 mol% or more and 90 mol% or less, more preferably 15 mol% or more and 85 mol%. %, Particularly preferably 20 mol% or more and 80 mol% or less. When the degree of neutralization is within the above range, the transparency of the obtained light guide member is further improved.
  • the metal ions constituting the ionomer resin include alkali metal ions such as lithium ions, sodium ions and potassium ions; ions of polyvalent metals such as magnesium ions, calcium ions, zinc ions and aluminum ions.
  • alkali metal ions such as lithium ions, sodium ions and potassium ions
  • ions of polyvalent metals such as magnesium ions, calcium ions, zinc ions and aluminum ions.
  • sodium ion, zinc ion, and magnesium ion are preferable, and sodium ion and zinc ion are more preferable and zinc ion is particularly preferable from the viewpoint that the light-emitting property of the light guide member can be further improved.
  • These metal ions may be used alone or in combination of two or more.
  • the ionomer resin can be obtained, for example, by reacting an ethylene / unsaturated carboxylic acid copolymer with an oxide, hydroxide, carbonate or the like containing the metal ion. Moreover, a commercial item may be used for the said ionomer resin.
  • the ionomer resin one kind may be used alone, or two or more kinds may be used in combination.
  • the resin composition for a light guide member in the present embodiment includes an inorganic filler, an organic filler, an ultraviolet absorber, an antioxidant, a light stabilizer, an antiaging agent, and a light diffusing agent within the range not impairing the effects of the present invention.
  • Additives such as plasticizers, organic dyes, dyes, pigments, lubricants, impact modifiers, etc. may be contained singly or in combination of two or more.
  • the resin composition for a light guide member in the present embodiment can be obtained, for example, by dry blending or melt blending the synthetic resin and, if necessary, the additive, simultaneously or sequentially.
  • Various mixers such as a Henschel mixer and a tumbler mixer can be used for the dry blending.
  • a kneading apparatus such as a single or twin screw extruder, a Banbury mixer, a roll, a kneader can be used.
  • melt kneading is performed at a temperature of about 130 ° C to 230 ° C.
  • the light guide member in the present embodiment is, for example, a sheet shape, a film shape, a plate shape, and the like, by a known molding method such as extrusion molding, injection molding, compression molding, and hollow molding. It can be obtained by molding into various shapes such as three-dimensional shapes.
  • the shape of the light guide member is not particularly limited because it is appropriately determined depending on the usage form, but a sheet shape or a plate shape is preferable in that it can sufficiently exhibit light-emitting properties.
  • the thickness of the sheet-shaped or plate-shaped light guide member is not particularly limited, but is usually 0.2 mm or more and 5.0 mm or less, preferably 0.8 mm or more and 2.2 mm or less.
  • size is not specifically limited, The magnitude
  • the light guide member in the present embodiment may be subjected to a hard coat treatment with an inorganic or organic compound, an antistatic treatment, an antireflection treatment, an electromagnetic shielding treatment, or the like, within a range that does not impair the effects of the present invention. Good. These treatments can be performed on the surface of the light guide member by vapor deposition, sputtering, dipping, thermal transfer, or the like.
  • the light guide member in the present embodiment can emit light incident from the light source with high brightness and uniformly over the entire light guide member. Therefore, general lighting such as indoor lighting, floor lighting, wall lighting, desk lighting, etc .; Advertising / Leisure / Transfer signs, stage lighting, amusement equipment, game equipment, pachinko machines, pachislot machines, toys, vending machines Decorative lighting for playground equipment; Traffic and safety lighting such as traffic signs, information boards, street lights, bicycle reflectors, umbrella handles; automotive lighting such as automotive tail lamps and automotive interior lighting; vegetable cultivation, in the factory It can be used suitably for agricultural / industrial lighting for visual inspection, lighting for distribution such as lighting for refrigerated cases, lighting for showcases, decorative lighting for household appliances such as televisions, and wire covering materials.
  • the light guide member in the present embodiment can be suitably used for a light source such as a plasma light emitting illumination device, a light emitting diode illumination device, an organic electroluminescence illumination device, and a field emission illumination device.
  • a light source such as a plasma light emitting illumination device, a light emitting diode illumination device, an organic electroluminescence illumination device, and a field emission illumination device.
  • it can use especially suitably for a light emitting diode illuminating device and an organic electroluminescent illuminating device.
  • Ionomer 1 Ethylene / methacrylic acid copolymer (methacrylic acid 5.7 mol%), Na neutralization degree 45 mol%, MFR 4.5 g / 10 min
  • Ionomer 2 Ethylene / methacrylic acid copolymer (methacrylic acid 5.4 Mol%), Na neutralization degree 54 mol%, MFR 0.9 g / 10 min
  • ionomer 3 ethylene / methacrylic acid copolymer (methacrylic acid 5.4 mol%), Na neutralization degree 30 mol%, MFR 2.8 g / 10 minutes
  • Ionomer 4 Ethylene / methacrylic acid copolymer (methacrylic acid 5.4 mol%), Zn neutralization degree 59 mol%, MFR 0.9 g / 10 min
  • Ionomer 5 ethylene / methacrylic acid copolymer (methacrylic acid 5.4 Mol%), Zn neutralization degree 23 mol%, MFR 5.0 g / 10 min
  • ionomer 6 ethylene / methacrylic acid / isobutyl acrylate copolymer (3.8 mol% methacrylic acid, 2.7 mol% isobutyl acrylate) Zn neutralization degree 70 mol%, MFR 1.0 g / 10 min
  • Ionomer 7 Ethylene / methacrylic acid / isobutyl acrylate copolymer (3.2% by mole of methacrylic acid, 4.6% by mole of isobutyl acrylate), Zn neutralization degree 65% by mole, MFR 2.5 g / 10 min.
  • Ionomer 8 Ethylene / methacrylic acid / isobutyl acrylate copolymer (3.2% by mole of methacrylic acid, 4.6% by mole of isobutyl acrylate), Na neutralization degree 55% by mole, MFR 2.2 g / 10 min.
  • Ionomer 9 Ethylene / methacrylic acid Acid copolymer (methacrylic acid 5.4 mol%), Mg neutralization degree 54 mol%, MFR 0.7 g / 10 min
  • Acrylic rubber Metal methacrylate and butyl acrylate block copolymer, manufactured by Kuraray Co., Ltd., Clarity, MFR 1.5 g / 10 min)
  • Example 1 Using the above ionomer 1 as a synthetic resin, a molding temperature of 180 ° C. and an average cooling rate of 15 ° C./min using a new JIS-compliant fully automatic press molding machine (manufactured by Intesco) based on the compression molding conditions of JIS K6924-2 The molded product take-out temperature was 40 ° C., the total pressure was 10 MPa, the pressurization time was 5 minutes, and the preheating time was 5 to 15 minutes depending on the melting point of the sample to produce a 1 mm thick light guide member sheet.
  • a new JIS-compliant fully automatic press molding machine manufactured by Intesco
  • the molded product take-out temperature was 40 ° C.
  • the total pressure was 10 MPa
  • the pressurization time was 5 minutes
  • the preheating time was 5 to 15 minutes depending on the melting point of the sample to produce a 1 mm thick light guide member sheet.
  • Example 2 to 9 and Comparative Example 1 In Examples 2 to 9 and Comparative Example 1, light guide member sheets were produced in the same manner as in Example 1 except that the resin used was changed to the resin shown in Table 1.
  • Total light transmittance (A) is a haze / transmittance meter (HM-150, manufactured by Murakami Color Co., Ltd.) in accordance with JIS K7361-1. It measured using.
  • the haze (B) was measured using a haze / transmittance meter (HM-150, manufactured by Murakami Color Co., Ltd.) according to JIS K7136, and calculated from the following formula.
  • Haze (B) (%) (total light transmittance (A) ⁇ parallel line transmittance) / total light transmittance (A)
  • FIG. 2 is a photograph comparing the light-emitting properties of the light guide member sheets obtained in Examples and Comparative Examples.
  • the light guide member sheet having a light emission index (B / A) within the range of the present invention can emit incident light with high brightness and uniformly over the entire light guide member sheet. It was confirmed that

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

Cette composition de résine pour un élément de guidage de lumière contient une résine synthétique, et lorsqu'une feuille ayant une épaisseur de 1 mm est formée de la résine synthétique, la transmittance de lumière totale (A) mesurée conformément à la Norme JIS K 7361 -1 est de 80% ou plus et l'indice d'émission de lumière (B/A) défini par le rapport de voile (B) mesuré conformément à la Norme JIS K 7136 à la transmittance de lumière totale (A) est de 1,2 × 10 -2 à 3,0 × 10 -1.
PCT/JP2013/060328 2012-04-06 2013-04-04 Composition de résine pour élément de guidage de lumière, et élément de guidage de lumière obtenu par moulage de celle-ci WO2013151131A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017038047A1 (fr) * 2015-09-02 2017-03-09 フクビ化学工業株式会社 Objet linéaire souple émettant de la lumière et son procédé de production
WO2020179632A1 (fr) * 2019-03-04 2020-09-10 日本ポリエチレン株式会社 Ionomère multidimensionnel

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JP2004211087A (ja) * 2002-12-19 2004-07-29 Sanyo Chem Ind Ltd 帯電防止性樹脂組成物
JP2006035848A (ja) * 2004-06-23 2006-02-09 Ube Ind Ltd 積層フィルム
JP2007112935A (ja) * 2005-10-21 2007-05-10 Jsr Corp 光拡散性樹脂組成物、成形品および導光体
WO2010079737A1 (fr) * 2009-01-09 2010-07-15 三井・デュポンポリケミカル株式会社 Procédé de production de mélange maître, mélange maître, et son utilisation
JP2011257438A (ja) * 2010-06-04 2011-12-22 Mitsui Chemicals Inc 導光／発光成形体および導光／発光装置

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JP2011073155A (ja) * 2009-09-29 2011-04-14 Sumitomo Chemical Co Ltd 積層体
JP5350315B2 (ja) * 2010-05-11 2013-11-27 三井化学株式会社 ポリウレタンエラストマーおよび成形品

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JP2004211087A (ja) * 2002-12-19 2004-07-29 Sanyo Chem Ind Ltd 帯電防止性樹脂組成物
JP2006035848A (ja) * 2004-06-23 2006-02-09 Ube Ind Ltd 積層フィルム
JP2007112935A (ja) * 2005-10-21 2007-05-10 Jsr Corp 光拡散性樹脂組成物、成形品および導光体
WO2010079737A1 (fr) * 2009-01-09 2010-07-15 三井・デュポンポリケミカル株式会社 Procédé de production de mélange maître, mélange maître, et son utilisation
JP2011257438A (ja) * 2010-06-04 2011-12-22 Mitsui Chemicals Inc 導光／発光成形体および導光／発光装置

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Publication number Priority date Publication date Assignee Title
WO2017038047A1 (fr) * 2015-09-02 2017-03-09 フクビ化学工業株式会社 Objet linéaire souple émettant de la lumière et son procédé de production
US10197722B2 (en) 2015-09-02 2019-02-05 Fukuvi Chemical Industry Co., Ltd. Flexible linear light emitting element and a method of producing the same
WO2020179632A1 (fr) * 2019-03-04 2020-09-10 日本ポリエチレン株式会社 Ionomère multidimensionnel

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