WO2009119530A1 - 樹脂組成物、反射板及び発光装置 - Google Patents
樹脂組成物、反射板及び発光装置 Download PDFInfo
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- WO2009119530A1 WO2009119530A1 PCT/JP2009/055724 JP2009055724W WO2009119530A1 WO 2009119530 A1 WO2009119530 A1 WO 2009119530A1 JP 2009055724 W JP2009055724 W JP 2009055724W WO 2009119530 A1 WO2009119530 A1 WO 2009119530A1
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- resin composition
- titanium oxide
- component
- reflector
- light
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
Definitions
- the present invention relates to a resin composition suitable for molding a reflecting plate, a reflecting plate using the resin composition, and a light emitting device provided with the reflecting plate.
- the reflectors used in LED (light emitting diode) light emitting devices are made of resin from the viewpoint of good workability and light weight.
- the reflector may be exposed to a high temperature environment during the LED element mounting process, the soldering process when assembling the LED module, and the sealing resin curing process. For this reason, liquid crystal polyesters that are superior in terms of heat resistance and moldability have been widely studied as a resin material constituting the reflector.
- a reflector used in a light emitting device or the like is required to have a high reflectance in order to improve the luminance of the light emitting device or the like.
- a resin composition for a reflector a resin composition containing a filler capable of imparting a high reflectivity and liquid crystal polyester has been proposed.
- Japanese Laid-Open Patent Publication No. 2007-320996 has proposed a resin composition in which liquid crystal polyester is blended with titanium oxide and a blue colorant! / Disclosure of the invention
- an object of the present invention is to use a resin composition suitable for obtaining a reflector exhibiting excellent reflectivity with respect to visible light while sufficiently maintaining mechanical strength such as impact strength. It is providing the light-emitting device which uses this reflecting plate and this reflecting plate.
- the present invention provides components (A) and (B):
- a resin composition comprising 5 to 110 parts by mass of component (B) with respect to 100 parts by mass of component (A) is provided.
- the present inventors provide a reflecting plate formed by molding the resin composition, and a light emitting device including the reflecting plate and a light emitting element.
- the resin composition of the present invention it is possible to obtain a reflector that exhibits high reflectivity with respect to visible light while maintaining the excellent mechanical strength of liquid crystal polyester.
- the resin composition in the present invention comprises the following components (A) and (B):
- component ( ⁇ ) force is contained in 110 parts by weight.
- component ( ⁇ ) force is contained in 110 parts by weight.
- preferred embodiments of these components, the resin composition of the present invention containing these components, a reflector plate using the resin composition, and a light emitting device will be described in order.
- the liquid crystal polyester as the component ( ⁇ ) is a polyester called a thermopick liquid crystal polymer, and is a polymer that can form a melt exhibiting optical anisotropy at a temperature of 450 ° C or lower.
- liquid crystal polyester for example, (1) a liquid crystal polyester obtained by polymerizing a combination of an aromatic hydroxycarboxylic acid, an aromatic dicarboxylic acid and an aromatic diol,
- Etc. can be specifically mentioned.
- aromatic dicarboxylic acids or aromatic diols it is also possible to use their ester-forming derivatives.
- ester-forming derivatives liquid crystal polyesters can be used. There is an advantage that the manufacture of is easy.
- an example is given and demonstrated regarding an ester-forming derivative.
- the carboxyl group is converted into a group such as a highly reactive acid halogen group or acid anhydride, Or the said carboxyl group forms ester with alcohol, ethylene glycol, etc. which produce
- the phenolic hydroxyl group is lower than the phenolic hydroxyl group so that a polyester is produced by a transesterification reaction.
- Examples thereof include those that form esters with carboxylic acids.
- aromatic hydroxycarboxylic acid, aromatic dicarboxylic acid or aromatic diol has a halogen atom such as a chlorine atom or a fluorine atom in its aromatic ring;
- a halogen atom such as a chlorine atom or a fluorine atom in its aromatic ring
- An alkyl group such as an ethyl group
- an aryl group such as a phenyl group as a substituent.
- These structural units may have a halogen atom, an alkyl group or an aryl group as a substituent.
- These structural units may be I having a halogen atom, an alkyl group or an aryl group as a substituent.
- These structural units may have a halogen atom, an alkyl group or an aryl group as a substituent.
- the liquid crystal polyester used as the component (A) has, as its structural unit, a structural unit derived from an aromatic hydroxycarboxylic acid) and / or ( A 2 ), as a structural unit derived from an aromatic diol, as a structural unit derived from an aromatic dicarboxylic acid, at least one selected from the group consisting of ( ⁇ ,), (8 2 ) and (8 3 ) A force having at least one selected from the group consisting of (C 2 ) and (C 3 ) force.
- the liquid crystalline polyester used for component (A) preferably has a flow initiation temperature of 270 to 400 ° C, more preferably 300 to 380 ° C.
- the composition of the composition of the moon and the resulting reflector is an LED module when used in light-emitting devices using LEDs as light-emitting elements.
- the reflector In a high temperature environment such as an assembly process, the reflector itself tends to be deformed or blisters (blowing abnormality) tend to occur.
- a resin composition using liquid crystalline polyester having a flow initiation temperature exceeding 400 ° C as component (A) it is necessary to increase the molding temperature in molding the resin composition. It tends to be relatively difficult to manufacture.
- the resin composition is used to mold a reflector at a molding temperature of 400 ° C. or higher, the liquid crystal polyester is susceptible to thermal degradation due to the influence of titanium oxide, and in severe cases, the reflector is discolored. As a result, there is a risk that the reflectance will be lowered.
- the flow start temperature here refers to a capillary rheometer with a nozzle with an inner diameter of 1 mm and a length of 10 mm. When extruding, it means a temperature at which the melt viscosity is 4800 Pa'sec, and the flow initiation temperature is an index representing the molecular weight of liquid crystal polyesters well known in the art. (See 'Molding' Application— “, pages 95-05, CMC, 19 June, 1987)).
- a mixture of an aromatic hydroxycarboxylic acid, aromatic diol and aromatic dicarboxylic acid is reacted with a fatty acid anhydride at 130 to 180 ° C. under a nitrogen atmosphere to convert the phenolic hydroxyl group of the aromatic hydroxycarboxylic acid and aromatic diol to a fatty acid.
- an acylated product aromatic hydroxycarboxylic acid acylated product and aromatic diol acylated product
- the equivalent ratio of the phenolic hydroxyl group to the carboxyl group in the mixture of aromatic hydroxycarboxylic acid, aromatic diol and aromatic dicarboxylic acid is preferably 0.9 to 11.
- the amount of fatty acid anhydride used relative to the total of the phenolic hydroxyl groups of the aromatic diol and aromatic hydroxycarboxylic acid is preferably 0.95 to I. 2 times equivalent, and 1.00 to I. 15 times. The equivalent is more preferable.
- the amount of fatty acid anhydride used is small, coloration of the liquid crystalline polyester tends to be suppressed, but if the amount of fatty acid anhydride used is too small, unreacted aromatic diol or aromatic dicarboxylic acid is sublimated during polycondensation. The easy reaction system tends to block. On the other hand, if the amount of fatty acid anhydrous used exceeds 1.2 equivalents, the resulting liquid crystalline polyester will be highly colored and may deteriorate the reflectance of the reflector.
- fatty acid anhydrides include acetic anhydride, propionic anhydride, butyric anhydride, isobutyric anhydride, valeric anhydride, pivalic anhydride, 2-ethylhexanoic anhydride, monochloroacetic anhydride, dichloroacetic anhydride, trichloroacetic anhydride, Examples include monobromoacetic anhydride, dibromoacetic anhydride, tribromoacetic anhydride, monofluoroacetic anhydride, difluoroacetic anhydride, trifluoroacetic anhydride, anhydrous dartharic acid, maleic anhydride, succinic anhydride, ⁇ -bromopropionic acid anhydrous, etc.
- Power to be used Not particularly limited. Two or more of these may be used in combination. From the viewpoint of price and handleability, acetic anhydride, propionic anhydride, butyric anhydride, and isobutyric anhydride are preferably used, and acetic anhydride is more preferably used.
- the transesterification (polycondensation) reaction is preferably carried out while raising the temperature in the range of 130-400 ° C at a rate of 0.3% to 5%, and in the range of 150-350 ° C, 0.3-5 It is more preferable to react while raising the temperature at a rate of ° C / min.
- reaction by-product should be distilled out of the system.
- the transesterification (polycondensation) reaction is a viewpoint that makes the production of the liquid crystal polyester smoother and a viewpoint that sufficiently suppresses the coloring of the obtained liquid crystal polyester. Therefore, the reaction is preferably performed in the presence of a heterocyclic organic base compound containing 2 or more nitrogen atoms. The reason is that the nitrogen-containing heterocyclic organic base compound facilitates the production of the liquid crystal polyester and sufficiently suppresses the coloring of the obtained liquid crystal polyester.
- this heterocyclic organic base compound examples include imidazole compounds, triazole compounds, dipyridyl compounds, phenanthrine phosphorus compounds, diazaphenanthrene compounds, and the like.
- imidazole compounds are preferably used from the viewpoint of reactivity, and 1-methylimidazole and 1-ethylimidazole are more preferably used because they are easily available.
- the nitrogen-containing heterocyclic organic base compound is a step of mixing the above-mentioned aromatic hydroxycarboxylic acid, aromatic diol and aromatic dicarboxylic acid which may be present in the reaction system in the process of producing the acylated product.
- the nitrogen-containing heterocyclic organic base compound may be mixed and mixed.
- a catalyst other than the heterocyclic organic base compound is used as long as the effect of the present invention is not impaired for the purpose of further promoting the transesterification (polycondensation) reaction and increasing the polycondensation rate. You may use it.
- a metal salt or the like is used as a catalyst, the metal salt remains as an impurity in the liquid crystal polyester, and this impurity may adversely affect an electronic component such as a reflector.
- Using this heterocyclic organic base compound is a particularly preferred embodiment for producing the liquid crystalline polyester used for component (A).
- As a method for further improving the degree of polymerization of the liquid crystal polyester for example,
- Etc By improving the degree of polymerization by such a method, it becomes easier to produce a liquid crystal polyester having a suitable flow start temperature. In view of simple facilities, it is preferable to use solid phase polymerization.
- the polycondensation combining the above-mentioned acylation reaction and transesterification reaction and the subsequent solid phase polymerization are preferably carried out in an atmosphere of an inert gas such as nitrogen.
- the liquid crystal polyester produced by force can be a liquid crystal polyester having a YI value of 32 or less as shown in the above-mentioned JP-A No. 2004-256673, and is particularly preferable as the component (A). .
- the YI value is a value obtained by measuring a test piece with a color difference meter when a test piece having liquid crystal polyester strength is obtained.
- the YI value is an index representing the yellowness of an object, and is a value defined in ASTM D1925. Specifically, it can be obtained by the following formula.
- X value, ⁇ value, and ⁇ value are the tristimulus values of the light source color in the ⁇ color system, respectively.
- a liquid crystalline polyester having a threshold value of 32 or less obtained by the production method using the heterocyclic organic base compound is a particularly preferable force for use in the component ( ⁇ ).
- a liquid crystal polyester mixture having a value of 32 or less can also be obtained.
- a suitable mixed liquid crystal polyester can be selected as the component ( ⁇ ).
- Titanium oxide filler applied to the present invention is mainly composed of titanium oxide.
- the titanium oxide filler has a volume average particle size in the range of 0.27-0. 4 ⁇ , and may contain a trace amount of impurities as long as the effects of the present invention are not significantly impaired.
- the volume average particle size of the titanium oxide filler is less than 0.27 ⁇ , the reflectance for visible light, particularly light with a relatively short wavelength (light with a wavelength of about 0.44 / zm to 0.48 ⁇ ; , Sometimes referred to as “blue light”).
- blue light sometimes referred to as “blue light”.
- the present inventors surprisingly found that a reflector using a material having a volume average particle size larger than that of conventional titanium oxide filler is not suitable for blue light.
- high reflectivity was developed.
- the volume average particle diameter of the titanium oxide filler exceeds 0.4 m, the reflectance of the obtained reflector tends to decrease.
- the manufacturing method of the titanium oxide in the chlorine method mentioned later is a preferable manufacturing method at the point from which the titanium oxide which has a retil type crystal form is obtained, the volume average particle diameter of the titanium oxide obtained sometimes may become small. Therefore, when the titanium oxide used in the present invention is obtained by the chlorine method, the volume average particle size suitable for the present invention is appropriately controlled so as to obtain titanium oxide titanium having a range of 0.27 to 0.4 m. I prefer to do it.
- the volume average particle size of the titanium oxide filler is preferably a range force of 0.27-0.37 / zm, more preferably a range force of 0.27 to 0.32 ⁇ , and a range of 0.27 to 0.30 m. Is more preferred. Further, as the titanium oxide titanium filler, titanium oxide subjected to surface treatment as described later can be used.
- the volume average particle diameter is measured by measuring the appearance of the titanium oxide filler with a scanning electron microscope (SEM), and using the obtained SEM photograph as an image analysis device (for example, “Loo Co., Ltd.” Zettas IIIU ”) is used to obtain the distribution curve by plotting the particle amount (%) in each particle size interval of the primary particles. From the cumulative distribution curve, the particle size with a cumulative degree of 50% is used as the volume average particle size. It is what we want.
- SEM scanning electron microscope
- the present inventors have used a titanium oxide filler having a volume average particle size of 0.27 to 0.4 m, thereby sufficiently maintaining the excellent mechanical strength of the liquid crystal polyester itself and being excellent in impact strength. It has been found that a reflector can be obtained.
- a titanium oxide filler having a volume average particle size of less than 0.27 ⁇ is used, a reflective plate with a high reflectivity may be obtained by increasing the filling amount.
- the mechanical strength, particularly the impact strength to decrease significantly.
- a large amount of titanium oxide filler is used, a part where the titanium oxide filler agglomerates occurs in the resulting reflector, and that part becomes a fragile part, and when an impact is applied, the fragile part serves as a base point and cracks occur.
- the reflecting plate obtained from the resin composition of the present invention has excellent impact strength at which the titanium oxide filler hardly aggregates.
- the crystal form of the titanium oxide itself contained in the titanium oxide filler used as the component ( ⁇ ) is not particularly limited, and may be a rutile type, anatase type, or a titanium oxide in which both are mixed. However, if a reflector with good weather resistance in addition to high reflectivity is desired, a component containing rutile-type titanium oxide (iii) Titanium oxide filler is preferred.
- the titanium oxide filler having a relatively large volume average particle size is used as the component ( ⁇ )
- the dispersibility of the titanium oxide filler in the molded body is excellent. For this reason, a reflector having excellent impact strength can be obtained even if the proportion of component ( ⁇ ) is relatively large. Therefore, the blending ratio of component ( ⁇ ) can be adjusted according to the desired reflectance.
- the surface area is reduced by increasing the volume average particle size of the titanium oxide filler, it is possible to suppress deterioration of the liquid crystal polyester due to the catalytic action of titanium oxide.
- the blending ratio of the component ( ⁇ ) in the present fat composition is 5 to 110 parts by mass with respect to 100 parts by mass of the component ( ⁇ ), and 5 to 80 parts by mass is preferred.
- the department is more preferred.
- the blending ratio of this component ( ⁇ ⁇ ) is less than 5 parts by mass, it is difficult to obtain a reflector having a practical reflectance, and when it exceeds 110 parts by mass, it tends to be difficult to manufacture the reflector.
- the mechanical properties and heat resistance of the liquid crystal polyester cannot be sufficiently maintained.
- the present inventors have found that the surface treatment agent of titanium oxide or titanium oxide contained in the titanium oxide filler acts like a catalyst, and the liquid crystal polyester It is presumed that one factor is to break the ester bond of this product and cause the molecular weight of the liquid crystal polyester to be lowered.
- component ( ⁇ ) When the content by weight of component ( ⁇ ) relative to component ( ⁇ ) is in the above range, a reflector exhibiting excellent reflectivity can be produced while sufficiently maintaining the mechanical strength of the liquid crystal polyester.
- the combined ratio of the total amount may be within the above range with respect to the component (A).
- the titanium oxide filler used for component (B) may be subjected to a surface treatment for the purpose of further improving dispersibility in the molded product.
- the surface treatment is preferably a surface treatment using an inorganic metal oxide in terms of further improving dispersibility, that is, a surface treatment such as attaching the inorganic metal oxide to the surface of titanium oxide is preferable.
- alumina is particularly preferable in terms of improving dispersibility.
- the oxytitanium filler subjected to such surface treatment has a volume average particle size after surface treatment in the range of 0.27 to 0.4 jum, preferably in the range of ⁇ to 0.27 to 0. More preferably, it may be in the range of 0.25 to 0.32 / xm, more preferably in the range of 27 to 0.30 / zm.
- the titanium oxide filler used in the present invention is preferably highly dispersible. It is not always necessary to use a titanium oxide filler that has been surface treated, but the titanium oxide filler that has been surface treated has a low agglomeration and is easy to handle. Many. Examples of the method for increasing the dispersibility of the titanium oxide filler include the surface treatment described above, but the dispersibility can also be increased by other methods without being limited thereto.
- a titanium oxide filler used for the component (B) is particularly useful as the component (B).
- the production of the titanium oxide filler by the leiochlorine method is briefly explained.
- a titanium source synthetic rutile, which can also be obtained from nortilite orilmenite ore
- chlorine at around 1000 ° C to give a rough reaction.
- titanium tetrachloride is obtained, and this crude titanium tetrachloride is purified by rectification, and then the resulting titanium tetrachloride is oxidized with oxygen to obtain titanium oxide.
- a rutile type titanium oxide which is a suitable crystal type can be obtained.
- titanium oxide filler containing such titanium oxide is a component of the present invention.
- (B) is particularly suitable.
- the titanium oxide produced by the chlorine method in this way is subjected to a known classification operation to select titanium oxide (titanium oxide filler) having a volume average particle size suitable as the component (B) of the present invention.
- titanium oxide fillers that can be used as component (B) include “TIPAQUE CR-58” from Ishihara Sangyo Co., Ltd., ⁇ JR-301, WP0042J from Tika Co., Ltd. .
- TIPAQUE CR-58 is made of titanium oxide produced by the chlorine method, and ⁇ JR-301 and WP0042J are also made of titanium oxide produced by a production method called the sulfuric acid method. is there.
- the resin composition of the present invention contains components (A) and (B), and the blending ratio of components (A) and (B) in the resin composition is as described above. Hereinafter, this resin composition will be described.
- a filler other than the component (B) (hereinafter referred to as “other filler”) may be added to the resin composition.
- 5-100 mass parts is preferable with respect to 100 mass parts of liquid crystal polyester, and, as for the addition amount of another filler, it is more preferable that it is 5-90 mass parts.
- the addition amount of other fillers exceeds 100 parts by mass, the color tone of the reflector is reduced, or the resin composition has a high melt viscosity and the granulation property is easily deteriorated. There is a tendency for the moldability to decrease.
- an inorganic filler is suitable.
- the inorganic filler examples include white pigments other than titanium oxide such as zinc oxide, zinc sulfide, and lead white, glass fiber, carbon fiber, metal fiber, alumina fiber, boron fiber, titanate fiber, wollastonite, Inorganic fibers such as asbestos, silicon dioxide, calcium carbonate, alumina, aluminum hydroxide, kaolin, talc, clay, my strength, glass flakes, glass beads, hollow glass beads, dolomite, various metal powders, barium sulfate, titanium Examples thereof include powders such as potassium acid and calcined gypsum, powdered granular materials such as silicon carbide, alumina, boron nitrite, aluminum borate and silicon nitride, and plate-like and whisker-like inorganic compounds.
- white pigments other than titanium oxide such as zinc oxide, zinc sulfide, and lead white
- glass fiber carbon fiber, metal fiber, alumina fiber, boron fiber, titanate fiber, wollastonite
- inorganic fibers such as glass fiber, titanate fiber, wollastonite, silicon dioxide, boron, and the like are used. It is preferable to use an inorganic compound such as aluminum oxynitride or silicon nitride, a plate-like or whisker-like inorganic compound, or talc.
- a suitable inorganic filler can reduce the molding shrinkage and the mechanical property anisotropy derived from the molecular chain orientation characteristic of the liquid crystal polyester. It is advantageous.
- a sizing agent may be used. However, it is preferable that the amount of the sizing agent to be used is small from the viewpoint of suppressing a decrease in color tone.
- the resin composition of the present invention includes a mold release improver such as a fluororesin, a high-grade fatty acid ester compound, and a fatty acid metal stalagmite; An antioxidant; a heat stabilizer; a fluorescent brightener; an ultraviolet absorber; an antistatic agent; and at least one conventional additive such as a surfactant may be added. Further, those having an external lubricant effect such as higher fatty acid, higher fatty acid ester, higher fatty acid metal salt, fluorocarbon surfactant and the like may be added.
- the resin composition of the present invention is obtained by mixing component (A), component (B) and other inorganic filler used as necessary, and the production method thereof is not particularly limited.
- a method of melt kneading using an extruder may be mentioned, and the resin composition may be obtained by pelletizing by vigorous melt kneading.
- the resin composition obtained by pelletizing can be improved in operability, and the selection range of a suitable molding method can be expanded depending on the shape of the target part.
- the reflector of the present invention can be obtained by melt molding from the resin composition of the present invention by various conventional molding methods.
- the molding method include an injection molding method, an injection compression molding method, and an extrusion molding method.
- injection molding is suitable, and a molded body obtained by injection molding can obtain a molded body having a complicated shape having a thin portion.
- the resin composition of the present invention comprises a thin reflector having a thin portion of 0.01 mm to 3 mm, preferably a thin portion of 0.02 to 2 mm, more preferably 0.05 to 1 mm. Suitable for manufacturing.
- the molding temperature for melt molding such as injection molding is preferably 10 to 60 ° C. higher than the flow start temperature of the resin composition used for melt molding. If the molding temperature is lower than the above temperature range, the fluidity tends to be lowered, and the moldability may be deteriorated and the strength of the reflector may be lowered. On the other hand, when the molding temperature exceeds the above temperature range, the liquid crystal polyester is remarkably deteriorated and the reflectance of the reflecting plate tends to be lowered.
- the flow start temperature of the resin composition can be determined using a capillary rheometer in the same manner as described for the method for measuring the flow temperature of liquid crystal polyester.
- the reflection plate of the present invention has a very good reflectance with respect to light rays in the visible light region, particularly with respect to blue light. Specifically, it is possible to manufacture a reflector having a reflectance of 70% or more with respect to a light beam having a wavelength of 460 nm. This reflectance is preferably 75% or more, more preferably 80% or more. Here, the reflectance is determined based on the total light reflectance measurement method A (standard white plate: barium sulfate) of JIS K7 105-1981.
- the reflector of the present invention can be suitably used for a member involved in light reflection, particularly visible light reflection, in fields such as electricity, electronics, automobiles, and machines.
- a lamp reflector of a light source device such as a halogen lamp or HID
- a light emitting device using a light emitting element such as an LED or an organic EL
- a high intensity reflector of a display device such as an LED or an organic EL
- it can be suitably used as a reflector used in a light emitting device using LEDs.
- test piece having a length of 64 mm, a width of 12.7 mm, and a thickness of 6.4 mm was molded from the resin composition using an injection molding machine, and measured according to ASTM D256.
- the filler used in order to obtain the test piece of a reflecting plate in an Example and a comparative example is as follows.
- Titanium oxide filler
- TIPAQUE CR-60 (Ishihara Sangyo Co., Ltd., containing titanium oxide produced by the chlorine method, alumina surface-treated product, average particle size 0.21 ⁇ m; hereinafter referred to as “CR-60”)
- TIPAQUE CR-50 (produced by Ishihara Sangyo Co., Ltd., containing titanium oxide produced by the chlorine method, alumina surface-treated product, average particle size 0.25 ⁇ ; hereinafter referred to as “CR_50”)
- SR-1 (manufactured by Sakai Chemical Co., Ltd., containing titanium oxide produced by the sulfuric acid method, treated alumina surface, average particle size 0.26 ⁇ ; hereinafter referred to as “SR-1”)
- TIPAQUE CR-58 (Ishihara Sangyo Co., Ltd., containing titanium oxide produced by the chlorine method, alumina surface-treated product, average particle size 0.28 ⁇ ; hereinafter referred to as “CR-58”)
- TITANIX JR-301 manufactured by Tika Co., Ltd., containing titanium oxide produced by the sulfuric acid method, aluminum surface-treated product, average particle size 0.30 m; hereinafter referred to as “JR-301”)
- TITANIX WP0042 manufactured by Tika Co., Ltd., containing titanium oxide produced by the sulfuric acid method, alumina surface-treated product, average particle size 0.34 / x m; hereinafter referred to as “WP0042”)
- TITANIX JR-1000 manufactured by Tika Co., Ltd., containing titanium oxide produced by sulfuric acid method, alumina surface-treated product, average particle size 1. ⁇ ⁇ ⁇ ; hereinafter referred to as “JR-1000”)
- EFH75-01 Central Glass Co., Ltd .; hereinafter referred to as “EFH75”)
- EFDE50-01 Central Glass Co., Ltd .; hereinafter referred to as “EFDE50”
- CS03JAPX-1 Adahi Fiber Glass Co., Ltd .; hereinafter referred to as “CS03”.
- the obtained prepolymer is cooled to room temperature, pulverized by a coarse pulverizer, heated from room temperature to 250 ° C over 1 hour in a nitrogen atmosphere, and heated from 250 ° C to 285 ° C over 5 hours. 285 ° C
- the solid phase polymerization was carried out by holding for 3 hours.
- the flow starting temperature of the obtained liquid crystalline polyester was 327 ° C.
- the liquid crystal polyester 1 thus obtained is named.
- Example 1 For the liquid crystalline polyester 1 used in Example 1, a titanium oxide filler and a glass fiber are displayed.
- test pieces were obtained in the same manner as in Example 1 and various measurements were performed. The results are shown in Table 1 or Table 2.
- the obtained prepolymer is cooled to room temperature, pulverized with a coarse powder grinder, heated in a nitrogen atmosphere from room temperature to 250 ° C for 1 hour, heated to 250 ° C and 305 ° C. Solid state polymerization was carried out by keeping the temperature at 305 ° C for 3 hours.
- the obtained liquid crystal polyester had a flow initiation temperature of 357 ° C.
- the liquid crystal polyester 2 obtained in this manner is designated as 2.
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Abstract
Description
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Priority Applications (2)
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US12/934,582 US8222802B2 (en) | 2008-03-28 | 2009-03-17 | Resin composition, reflective plate and light-emitting device |
CN200980110256.5A CN101977988B (zh) | 2008-03-28 | 2009-03-17 | 树脂组合物、反射板和发光装置 |
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JP2008-086241 | 2008-03-28 | ||
JP2008086241 | 2008-03-28 |
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US (1) | US8222802B2 (ja) |
JP (1) | JP5446344B2 (ja) |
KR (1) | KR101563762B1 (ja) |
CN (1) | CN101977988B (ja) |
TW (1) | TWI521011B (ja) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103360730A (zh) * | 2012-03-29 | 2013-10-23 | 住友化学株式会社 | 液晶聚酯组合物 |
US9283707B2 (en) | 2008-09-11 | 2016-03-15 | Sumitomo Chemical Company, Limited | Method for producing liquid-crystalline polyester resin composition |
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TWI521011B (zh) | 2016-02-11 |
CN101977988B (zh) | 2013-01-30 |
US8222802B2 (en) | 2012-07-17 |
JP2009256627A (ja) | 2009-11-05 |
CN101977988A (zh) | 2011-02-16 |
JP5446344B2 (ja) | 2014-03-19 |
US20110018421A1 (en) | 2011-01-27 |
KR101563762B1 (ko) | 2015-10-27 |
KR20100139074A (ko) | 2010-12-31 |
TW201000554A (en) | 2010-01-01 |
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