WO2009072671A1 - 樹脂組成物、その成形品および端末装置のキー - Google Patents
樹脂組成物、その成形品および端末装置のキー Download PDFInfo
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- WO2009072671A1 WO2009072671A1 PCT/JP2008/072586 JP2008072586W WO2009072671A1 WO 2009072671 A1 WO2009072671 A1 WO 2009072671A1 JP 2008072586 W JP2008072586 W JP 2008072586W WO 2009072671 A1 WO2009072671 A1 WO 2009072671A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
Definitions
- the present invention relates to a resin composition and a molded product suitable for high-temperature processing. More specifically, the present invention relates to a molded resin product having excellent thermal stability even at a high molding temperature and capable of supplying a key of a terminal device, particularly a terminal device key.
- Aromatic polycarbonate resins are excellent in transparency, impact properties, fatigue properties, strength, dimensional stability, electrical properties, flame retardancy, etc., and are widely used industrially.
- the thickness of molded products has been reduced from the viewpoint of weight reduction and cost reduction, and there is an increasing need for molding at high temperatures.
- the strength requirements of the thin-walled part of the product are increasing, and the chemical resistance is particularly problematic with aromatic polystrength Ponate resins, and as a result, the molecular weight of the aromatic polycarbonate resin is increased to achieve satisfactory characteristics. Attempts have been made to try.
- the molecular weight of the aromatic polycarbonate resin is increased, the viscosity at the time of melting increases, and the molding temperature must be increased when molding into a predetermined molded product.
- Patent Document 1 an attempt is made to add a specific phosphorus compound to an aromatic polycarbonate resin and an alicyclic polyester resin to improve chemical resistance, molding processability, etc. Compared with a polystrength Ponate resin, polymer alloys with other resins cannot be used practically due to hue changes caused by alloying.
- Patent Document 4 proposes molding a key of a terminal device by molding an aromatic polystrength resin at a high temperature.
- the color variation can be increased and the design can be improved, and it is also possible to improve the visibility of characters and the like applied to the button with a beautiful color.
- the aromatic polycarbonate resin has a high viscosity, and when molding a thin molded product, the molding temperature had to be set high.
- the aromatic polycarbonate resin is discolored, and there is a problem that the key of the terminal device that is satisfactory in appearance cannot be provided.
- the degree of discoloration increases, which is likely to be a major problem in product quality.
- the molding temperature is high, the molded product tends to be in close contact with the mold, and mold release defects are likely to occur.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2007-106984
- Patent Document 2 Japanese Unexamined Patent Publication No. 2006-111684
- Patent Document 3 Japanese Unexamined Patent Publication No. 2007-048602
- Patent Document 4 Japanese Unexamined Patent Publication No. 2006-92951 Disclosure of the invention
- An object of the present invention is to provide a resin composition having an excellent hue with an aromatic polystrength resin and having excellent thermal stability.
- Another object of the present invention is to provide a resin composition having both transparency, color variation and strength without causing discoloration and mold release failure.
- Another object of the present invention is to provide a molded article excellent in thermal stability, hue, transparency, color variation and strength, and a method for producing the same.
- Injection molding is required to injection-mold thin-walled products such as the key of terminal equipment, which increases the size of the molding machine. Along with this, the cylinder capacity of the molding machine increases and the time for the resin to stay in the cylinder tends to increase. In particular, when molding small molded products such as the keys of terminal devices, the residence time increases and the hue tends to deteriorate accordingly. Therefore, in order to form a key for a terminal device which is a thin and small molded product, a resin composition having excellent thermal stability and releasability and hardly causing discoloration is required.
- the present inventors have found that the thermal stability, discoloration, and poor mold release when molded at a high temperature are the chlorine atom content, The present invention has been completed by finding that it can be improved by the type and amount of release agent. That is, according to the present invention,
- a molded article comprising the resin composition as described in 1 above,
- the molded article according to item 8 above having a volume of 5 to 300 mm 3 and a thickness of 0.2 to 0.8 mm.
- a method for producing a molded article comprising melting the resin composition described in the preceding paragraph 1 at 350 to 420 ° C and injection molding,
- Fig. 1 A schematic diagram of a typical mold.
- FIG. 2 is a schematic view of a mold for evaluating a releasing force used in the present invention.
- Fig. 3 is an oblique view of the disk molded product used in the release force measurement.
- Fig. 4 is a view of the disk molded product used in the release force measurement from the side.
- FIG. 5 is a schematic view of a mold release force evaluation system and a molding machine used in the present invention.
- Fig. 6 is an overview of release force measurement data.
- Fig. 7 is an enlarged view of the waveform when the molded product is ejected with the ejector pin from the overall view of the release force measurement data.
- FIG. 8 is a diagram showing a 1 H-NMR spectrum chart of an aromatic polycarbonate resin pellet.
- FIG. 9 is a view showing an apparatus used in the synthesis of aromatic polycarbonate resin of Synthesis Examples 1 to 3.
- Aromatic polycarbonate resin (hereinafter sometimes referred to simply as “polycarbonate one”) is obtained by reacting divalent phenol with a carbonate precursor.
- the reaction method is interfacial polycondensation, melting.
- Transesterification, carbonate Examples thereof include a solid phase transesterification method of a prepolymer and a ring-opening polymerization method of a cyclic carbonate compound.
- divalent phenols include hydroquinone, resorcinol, 4, 4, bibiphenol, 1,1 bis (4-hydroxyphenyl) ethane, 2, 2 bis (4-hydroxyphenyl) propane (commonly called “bis” Phenol A ";), 2,2 bis (4-hydroxy-3-methylphenyl) propane, 2,2 bis (4-hydroxyphenyl) butane, 1,1 bis (4-hydroxyphenyl) -1 Phenyl, 1,1 bis (4-hydroxyphenyl) cyclohexane, 1, 1 bis (4-hydroxyphenyl) -3, 3, 5-trimethylcyclohexane, 2, 2 bis (4 -Hydroxyphenyl) pentane, 4, 4, 1 (p-phenylene diisopropylidene) diphenol, 4, 4, 1 (in-phenylene diisopropylidene) diphenol, 1, 1_bis (4-hydroxy phenol) Le) -4 Bis (4-hydroxyphenyl) oxide, bis (4-hydroxyphenyl) sulfon
- a special polycarbonate produced using other divalent phenols can be used as the A component.
- divalent phenol component may be abbreviated as 4, 4, 1 (m-phenol dirange isopropylidene) diphenol (hereinafter “BPM”).
- BPM 4, 4 1 (m-phenol dirange isopropylidene) diphenol
- B 1, 1-bis (4-hydroxyphenyl) cyclohexane, 1,1-bis (4-hydroxyphenyl) -1,3,3,5-trimethylcyclohexane
- B is— TM C "9,9-bis (4-hydroxyphenyl) fluorene and 9,9-bis (4-hydroxy-3-methylphenyl) fluorene (hereinafter sometimes abbreviated as" BCF ").
- Polycarbonates homopolymers or copolymers are suitable for applications where dimensional changes due to water absorption and requirements for form stability are particularly severe.
- carbonyl halides, carbonate esters or haloformates can be used as the vicinal-bonnet precursors, and specific examples include phosgene, diphenyl carbonate, or dihaloformates of divalent phenol.
- the polystrength-ponate may be a branched polystrength-bonate obtained by copolymerization of a trifunctional or higher polyfunctional aromatic compound.
- the trifunctional or higher polyfunctional aromatic compounds used here are 1, 1, 1 monolithic (4-hydroxyphenyl) ethane, 1, 1, 1-tris (3, 5 monodimethyl-4) -Hydroxyphenyl) ethane and the like.
- Polycarbonates include polyester carbonates copolymerized with aromatic or aliphatic (including alicyclic) bifunctional carboxylic acids, copolymerized polycarbonates copolymerized with bifunctional alcohols (including alicyclic), and the like. It may be a polyester carbonate obtained by copolymerizing bifunctional sulfonic acid and bifunctional alcohol together. Also, a mixture obtained by blending two or more of the obtained polycarbonates can be used.
- the reaction by the interfacial polycondensation method is usually a reaction of divalent phenol and phosgene, and is reacted in the presence of an acid binder and an organic solvent.
- an acid binder an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide or an amine compound such as pyridine is preferably used.
- Organic solvent As such, halogenated hydrocarbons such as methylene chloride and black benzene are preferably used.
- a catalyst such as tertiary amine such as triethylamine, tetra-n-butylamine bumbamide, tetra-n-butylphosphonium bromide, quaternary ammonium compound, quaternary phosphonium compound, etc. can also be used.
- the reaction temperature is usually 0 to 40 ° (:, the reaction time is preferably about 10 minutes to 5 hours, and the pH during the reaction is preferably kept at 9 or more.
- a terminal terminator is usually used.
- Monofunctional phenols can be used as such terminal terminators.
- the monofunctional phenols it is preferable to use monofunctional phenols such as phenol, P-tert monobutyl phenol, p-cumyl phenol and the like.
- the organic solvent solution of polycarbonate obtained by the interfacial polycondensation method is usually subjected to water washing power.
- This water washing step is preferably performed with water having an electric conductivity of 10 / cm or less, such as ion-exchanged water, and more preferably 1 SZ cm or less.
- the organic solvent solution and water are mixed, stirred, and then allowed to stand. Or using a centrifuge, etc., the organic solvent solution phase and the aqueous phase are separated, and the organic solvent solution phase is removed repeatedly to remove water-soluble impurities.
- water-soluble impurities are efficiently removed, and the hue of the resulting polystrength Ponate becomes good.
- the organic solvent solution of poly force mononate is subjected to acid washing or alkali washing in order to remove impurities such as a catalyst.
- impurities such as a catalyst.
- a method for removing this foreign substance a method of filtering or a method of treating with a centrifuge is preferably employed.
- the organic solvent solution that has been washed with water is then subjected to an operation of removing the solvent to obtain a polycarbonate resin particle.
- a method (granulation process) for obtaining polycarbonate granules since operation and post-treatment are simple, in a granulator where polycarbonate granules and hot water (about 65 to 90 ° C) are present. Then, a method of producing a slurry by continuously supplying an organic solvent solution of polycarbonate while stirring and evaporating the solvent is used. A mixer such as a stirring tank kneader is used as the granulator. The generated slurry is placed at the top or bottom of the granulator Are continuously discharged.
- the discharged slurry can then be subjected to hot water treatment.
- the slurry is supplied to a hot water treatment vessel containing hot water at 90 to 100 ° C, or the water temperature is adjusted to 90 to 100 by blowing steam after the supply. By setting it to 0, the organic solvent contained in the slurry is removed.
- the slurry discharged in the granulation step or the slurry after the hot water treatment is preferably filtered, centrifuged, etc. to remove water and organic solvent, and then dried to obtain a poly-polynate resin powder (powder). Shape or flake shape).
- the dryer may be a conduction heating system or a hot air heating system, and the polycarbonate resin particles may be allowed to stand, transport, or be agitated.
- a grooved or cylindrical dryer in which the polycarbonate resin particles are stirred by a conductive heating method is preferred, and a grooved dryer is particularly preferred.
- the drying temperature is preferably in the range of 130 ° C to 150 ° C.
- the reaction by the melt transesterification method is usually a transesterification reaction between a divalent phenol and a monopone ester, and the divalent phenol and the carbonate ester are mixed with heating in the presence of an inert gas, This is carried out by distilling off the alcohol or phenol produced.
- the reaction temperature varies depending on the boiling point of the alcohol or phenol to be produced, but in most cases it is within the range of 120 to 35 ° C.
- the pressure of the reaction system is reduced to about 1.3 3 X 10 3 to 13.3 Pa to facilitate the distillation of the alcohol or phenol produced.
- the reaction time is usually about 1 to 4 hours.
- carbonate ester examples include esters such as an aryl group having 6 to 10 carbon atoms, an aralkyl group, or an alkyl group having 1 to 4 carbon atoms, which may have a substituent.
- esters such as an aryl group having 6 to 10 carbon atoms, an aralkyl group, or an alkyl group having 1 to 4 carbon atoms, which may have a substituent.
- Luca Pone Repulsion S is preferable.
- the molten polycarbonate resin obtained by the melt transesterification method can be pelletized by a melt extruder. This pellet is used for molding.
- the viscosity average molecular weight of the polycarbonate is less than 1.0 X 10 4 , the strength and the like are lowered, and when it exceeds 5.0 X 10 4 , the molding process characteristics are lowered.
- Range of 8X 10 4 Is more preferable.
- the polycarbonate component of the high molecular weight viscosity average molecular weight is more than 5.
- the viscosity-average molecular weight referred to in the present invention is determined by first comparing the specific viscosity (? 7 SP ) calculated by the following formula at 20 ° C with a solution strength obtained by dissolving 0.7 g of polymonate in 10 ml of methylene chloride. Obtained using a Ostwald viscometer,
- the viscosity average molecular weight (M) is calculated from the obtained specific viscosity (77 SP ) by the following formula.
- the viscosity average molecular weight of a polycarbonate when measuring the viscosity average molecular weight of a polycarbonate, it can carry out in the following way. That is, the polycarbonate resin is dissolved in 20 to 30 times its weight of methyl chloride, and the soluble component is collected by Celite filtration, and then the solution is removed and dried sufficiently to obtain a solid component of methylene chloride soluble component.
- the specific viscosity (77 SP ) at 20 ° C is determined from a solution of 0.7 g of the solid dissolved in 10 Oml of methylene chloride using a Ostold viscometer, and the viscosity average molecular weight M is calculated by the above equation.
- the chlorine atom content in the resin composition can be adjusted by the following method.
- the chlorine atom content can be effectively reduced by drying strengthening in the granulation process. It is also effective to substitute the solvent itself in the granulation step with a solvent containing no C 1 such as heptane.
- a method of strengthening the vacuum vent in the process of melting and pelletizing is also effective.
- a poor solvent of polycarbonate resin such as water or heptane is injected during melt extrusion.
- the chlorine atom content can be reduced by azeotroping with a vacuum vent.
- aromatic polystrandone resin polymerized by the melt transesterification method is useful because it hardly contains C1 in the first place.
- the amount of ⁇ H terminal group of the aromatic polycarbonate resin can be adjusted by the following method.
- the amount of OH end groups can be adjusted by the use of catalyst, the amount of terminal terminator added, and the addition time. Performing the polymerization reaction in a stationary state is also effective in reducing the amount of OH end groups.
- the melt transesterification method it is possible to reduce the amount of O-terminal groups by increasing the abundance ratio of divalent phenol and vicinal Ponate ester to more than equimolar amounts of carbonate ester.
- the amount of OH end group of the aromatic polystrand resin is 0.1 to 30 eqZton, preferably 0.1 to 25 eqZton, more preferably 0.1 to 20 eqZton.
- the amount of ⁇ H terminal group of aromatic polycarbonate resin is measured by NMR method.
- the glycerin monoester used as a release agent is mainly composed of glycerin and a monoester of fatty acid, and suitable fatty acids include stearic acid, palmitic acid, behenic acid, arachic acid, montanic acid, lauric acid.
- Saturated fatty acids such as oleic acid, linoleic acid, sorbic acid, and the like, and particularly preferred are stearic acid, behenic acid, and palmitic acid. Preferred are those synthesized from natural fatty acids, most of which are mixtures.
- the content of the glycerin monoester is 0.01 to 0.3 parts by weight, preferably 0.03 to 0.2 parts by weight, more preferably 0, based on 100 parts by weight of the aromatic polycarbonate resin (component A). .05 to 0.15 parts by weight. If the content is too small, good releasability cannot be obtained. If the content is too large, discoloration of the molded product is deteriorated.
- the mold release agent can be used in combination with other mold release agents known to those skilled in the art, but even when used in combination, the content of glycerin monoester is 0. 01 to 0.3 parts by weight, preferably the main component of the release agent. Guanzuraquinone dyes>
- the resin composition of the present invention may contain an anthraquinone dye having no ⁇ H functional group in the skeleton.
- an anthraquinone dye having no OH functional group in the skeleton used as a dye it is not limited to blue that is commonly used as a bluing agent by those skilled in the art. Many types such as orange, green, yellow and purple can be used, and various colors can be achieved by combining one or more dyes.
- anthraquinone dyes are those manufactured by Arimoto Chemical Industry Co., Ltd. PLASTB 1 ue 8520 (compound of the following formula (1)), PLAST Vio 1 et 8855 (compound of the following formula (2)), PLAST Red 8350 , PLAST Re d 8340, PLAST Re d 8320, OIL Gr en 5602, Bayer MACROLEX Blue RR (compound of formula (3) below), Mitsubishi Chemical DI ARES IN Blue N, Sumitomo SUM I PLA ST V iolet RR manufactured by Chemical Industry Co., Ltd., Bayer MACROLEX V iolet B (compound of the following formula (4)), and the like. Of these, compounds of formula (1), formula (2) or formula (3) which are anthraquinone dyes having no OH functional group in the skeleton are preferred.
- anthraquinone dye based on 100 parts by weight of the aromatic polycarboxylic force one Poneto resin, 1 X 10 one 6-1, 000 X 10_ 6 parts by weight, preferably 5 X 10 one 6- a 500 X 10 one 6 parts by weight, more preferably from 10 X 10- 6 ⁇ 1 50X 10 one 6 parts by weight, more preferably 10X 10_ 6 to 100 X 10- 6 parts by weight.
- Dyes other than anthraquinone can be used in combination, but it is desirable that 50% or more of the dye is an anthraquinone dye that does not have an OH functional group in the skeleton. against the addition amount of 100 parts by weight of the aromatic Porikapo Ne one preparative resin, 1 X 10- 6 ⁇ 1, a 000 X 10 one 6 parts by weight.
- a heat stabilizer In the resin composition of the present invention, a heat stabilizer, an ultraviolet ray absorbent, an antistatic agent, a flame retardant, a heat ray shielding agent, a fluorescent whitening agent, a pigment, a light diffusing agent, and the like within a range not impairing the object of the present invention Reinforcing fillers, other resins and elastomers can be blended.
- phosphorus heat stabilizers include phosphorous acid, phosphoric acid, phosphonous acid, phosphonic acid, and esters thereof. Specific examples include triphenylphosphite, tris (nonylphenyl).
- Rudiphosphite Tributyl phosphate, Triethyl phosphate, Trimethyl phosphate, Liphenyl phosphate, Diphenyl monoorthosenyl phosphate, Dibutyl phosphate, Dioctyl phosphate, Diisopropyl phosphate, Dimethyl benzenephosphonate, Benzenephosphonic acid Jetyl, dipropyl benzenephosphonate, tetrakis (2,4-di-tert-butylphenyl) —4,4, -biphenyl diphosphonate, tetrakis (2,4-di-tert-butylphenyl) —4, 3 '1 biphenyl Range Phosphonai ⁇ , Tetrakis (2,4-di-tert-butylphenyl) One 3,3'-biphenylenediphosphonai ⁇ , Bis (2,4-di-tert-butylphenyl)
- the content of the phosphorus-based heat stabilizer (D component) is preferably 0.001 to 0.2 parts by weight, more preferably 0 parts per 100 parts by weight of the aromatic polystrength Ponate resin (component A). 005 to 0.1 parts by weight.
- Sulfur-based heat stabilizers include pentaerythritol monorutetrakis (3-lauryl thiopropionate), pen erythritol 1 ⁇ one rutetrakis (3_myristylthiopropionate), pentaerythritol monorutetrakis (3-stearylthiol) Propionate), dilauryl 1,3 'monothiodipropionate, dimyristyl 3,3, monodipropionate, distearyl 1,3,3, monodipropionate, etc.
- Such thioether compounds are commercially available from Sumitomo Chemical Co., Ltd. as Sumilizer TP-D (trade name), Sumilizer TP M (trade name), etc., and can be easily used.
- the content of the sulfur-based heat stabilizer is preferably 0.001 to 0.2 parts by weight with respect to 100 parts by weight of the polycarbonate resin (A component).
- the hindered phenolic heat stabilizers include triethylene glycol-bis [3 (3-tert-petite 5-methyl-4-hydroxyphenyl) propionate], 1,6-hexanediorubis [3— (3 , 5-Di-tert-Petitul 4-hydroxyphenyl) propionate], Penn Erisri ⁇ ⁇ One Lu Tetrakis [3— (3, (3-, tert-Petitul 4-hydroxyphenyl) propionate], Octadecyl- 3— ( 3,5-Gi tert-Petilulu 4-Hydroxyphenyl) Propione®, 1, 3, 5-Trimethyl-2, 4, 6-Tris (3,5-Di-tert-butyl-4-hydroxybenzyl) benzene, N, N-Hexamethylenebis (3,5-Gee tert-Petitul 4-hydroxy 1
- UV absorber at least one UV absorber selected from the group consisting of benzotriazole UV absorbers, benzophenone UV absorbers, triazine UV absorbers, cyclic imino ester UV absorbers and cyanoacrylates. Is preferred.
- Benzotriazol UV absorbers include 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole, 2- (2-hydroxy-1,3, 5-Dicumylphenyl) Phenyl benzotriazole, 2 (2-Hydroxy-3-tert-Petilu 5-Methylphenyl) — 5—Clocobenzotriazole, 2, 2, -Methylenebis [4— (1, 1, 3 , 3-tetramethylbutyl) 1 6- (2N-benzotriazol 2-yl) phenol], 2- (2-hydroxy-1,3,5-tert tert-butylphenyl) benzotriazole, 2- (2-hydroxy-3 , 5-di-tert-butylphenyl) 1-5-clobenzobenzolazole, 2-1- (2-hydroxy-1,3,5-di-tert-amylphenyl) benzotriazole, 2- (2-
- Benzophenone-based UV absorbers include 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-oxyoxybenzophenone, 2-hydroxy-4-benzyloxybenzophenone 2-hydroxy-4-methoxy-5-sulfoxybenzophenone, 2-hydroxy-4-methoxy-1-5-sulfoxytrihydride benzophenone, 2, 2, dihydroxy-4-methoxybenzophenone, 2, 2, 4, 4, 1-tetrahydroxybenzophenone, 2, 2, -dihydroxy-4, 4, 1-dimethoxybenzophenone, 2, 2, 2-dihydroxy-4, 4, dimethyl-5-sodiumsulfoxybenzophenone, bis ( 5-Benzoyl 4-Hydroxy-1 2-Methoxyphenyl) Methane, 2-Hydroxy 4 n-dodecyl O carboxymethyl benzophenone, 2-hydroxy-4-methoxy one 2, one carboxymethyl benzophenone and the like can be mentioned up.
- Triazine-based UV absorbers include 2- (4, 6-diphenyl 2, 3, 5 1-triazine 1- 2-yl) 1 5-- [(hexyl) oxy] 1-phenol, 2-- (4, 6-bis (2.4-dimethylphenyl) 1, 1, 3, 5-triazine 2- 2- ) -5-[(octyl) oxy] phenol.
- Cyclic imino ester UV absorbers include 2, 2 'monobis (3, 1-benzoxazine mono-4-one), 2, 2' —p-phenylenediamine (3, 1-benzoxazine 4-monoone) ), 2, 2, 1 m-Phenylene bis (3, 1-Benzoxazine 1 4-one), 2, 2 '1 (4, 4, 2-Diphenyl) Bis (3, 1 1-Benzoxazine 1) 1-on), 2, 2, 1 (2, 6-naphthalene) bis (3, 1-benzoxazine 4-one), 2, 2,-(1, 5-naphthalene) bis (3, 1 1-benzoxazine 4-one), 2, 2,-(2-methyl-p-phenylene) bis (3,1-benzoxazine 4-one), 2, 2, 1 (2-nitro-p-phenyl) Len) bis (3, 1-benzoxazine 4-one) and 2, 2,-(2-chloro-p-phenylene) bis (3, 1-benzoxazine 4-one) It is
- 2, 2 'p-phenylenediamine (3, 1-benzoxazine 4-one), 2, 2, 1 (4, 4, diphenylene) bis (3, 1-benzoxazine 4- ON) and 2, 2, 1 (2, 6 1 naphthenol) hiss (3, 1-benzoxazine 1 4 1 ON) are preferred, especially 2, 2 '1 p-phenylenebis (3, 1-benzoxazine mono-one) is preferred.
- Such a compound is commercially available from Takemoto Yushi Co., Ltd. as CEi-P (trade name) and can be easily used.
- Cyanacrylate-based UV absorbers include 1,3-bis ([(2'-cyanol-3,3, -diphenylacryloyl) oxy] -2,2-bis [(2-cyanol-3,3- Examples thereof include diphenylacryloyl) oxy] methyl) propane, and 1,3-bis-[(2-cyano 3,3-diphenylacryloyl) oxy] benzen.
- the content of the ultraviolet absorber is preferably from 0.01 to 3.0 parts by weight, more preferably from 0.02 to L. 0 parts by weight, based on 100 parts by weight of the aromatic polycarbonate resin (component A). Preferably it is 0.05-0.8 weight part. Range of strong content If it is within the range, sufficient weather resistance can be imparted to the molded product depending on the application.
- the resin composition of the present invention can be mixed with other resins only when the hue is satisfied.
- Other thermoplastic resins other than polycarbonate resin include, for example, polyaprolactone resin, polyethylene resin, polypropylene resin, polystyrene resin, polyacryl styrene resin, ABS resin, AS resin, AES resin, ASA resin, SMA resin.
- General-purpose plastics such as polyalkyl methacrylate resin, polyphenylene ether resin, polyacetylene resin, aromatic polyester resin, polyamide resin, cyclic polyolefin resin, polyarylate resin (amorphous polyarylate, liquid crystal
- engineered plastics such as engineering plastics, borether ether ketone, polyetherimide, polysulfone, polyethersulfone, polyphenylenesulfide, etc.
- engineering plastics such as engineering plastics, borether ether ketone, polyetherimide, polysulfone, polyethersulfone, polyphenylenesulfide, etc.
- borether ether ketone polyetherimide
- polysulfone polyethersulfone
- polyphenylenesulfide polyphenylenesulfide
- thermoplastic elastomers such as styrene thermoplastic elastomers, olefin thermoplastic elastomers, polyamide thermoplastic elastomers, polyester thermoplastic elastomers, polyurethane thermoplastic elastomers, etc. can also be used. .
- a flame retardant can also be added to the resin composition of the present invention as long as the hue is satisfied.
- the flame retardant that can be used is not particularly limited, but is a halogenated bisphenol A polycarbonate flame retardant, an organic salt flame retardant, an aromatic phosphate ester flame retardant, or a halogenated aromatic. Phosphate ester type flame retardants, silicon flame retardants and the like can be mentioned, and one or more of them can be blended.
- the chlorine atom content in the resin composition is 100 ppm or less, preferably 0.1 to 1 OO ppm, more preferably 0.1 to 70 ppm, and even more preferably 0.1 to 5 ppm. 0 ppm.
- the chlorine atom content in the resin composition is measured by the combustion method. After weighing the sample, burn it in a mixed gas stream of argon and oxygen, and determine the amount by the amount of transfer of the silver electrode. The measurement can be performed with TOX-2100 H manufactured by Mitsubishi Chemical Corporation.
- the resin composition of the present invention has a hue at a thickness of 2 mm when molded at 370 ° C in the following range as measured by transmission with JI SK7105.
- the b value has a great influence on the hue required in the present invention, and the b value is more preferably 1.8 to 4.2, and particularly preferably 2.0 to 4.0.
- Figure 2 shows the mold used for vacuum adhesion (a typical mold is shown in Figure 1 for reference).
- a convex mold 1 having a convex shape is disposed on the right side
- a movable mold 2 having a concave shape is disposed on the left side.
- a cavity 3 is provided between these two types.
- the cavity shape is a disk shape with a diameter of 115 mm.
- Figures 3 and 4 show the shape of the molded product.
- Fig. 3 is a view of the molded product viewed from an oblique direction
- Fig. 4 is a diagram of the molded product viewed from the side.
- Gate 6 is opened at the center right of the cavity 3.
- a nest 4 polished to a predetermined arithmetic average roughness Ra is provided at the center of the movable mold 2 and a product thickness adjusting spacer 5 is provided on the outer periphery of the nest 4.
- measurements were taken at mold smoothness (Ra) of 0.01 im and product thickness (t) of 3 mm.
- an ejector pin 7 is installed in the center of the movable mold 2 so as to pass through the center of the insert 4, and a quartz piezoelectric force link 8 (manufactured by Nippon Kisler Co., Ltd.) is installed in the rear part. Furthermore, the crystal piezoelectric force link 8 is joined to the monitoring system 10 (manufactured by Nippon Kisler Co., Ltd.) by wiring 9.
- the monitoring system 10 and the molding machine side 11 are joined together by wiring 1 3, and immediately after the injection signal of the molding machine 11 is taken into the monitoring system 10, the ejector pin is set for a predetermined time. It is a mechanism that can measure the pressure applied to the.
- the pellets were introduced from the hopper 12 and the resin composition plasticized and melted at 350 ° C was mold temperature 100 ° C.
- the vacuum adhesion to the mold during product release was measured by ejecting the ejector pin and releasing the molded product.
- the measurement data was imported into the monitoring system 10 and processed. In the measurement, 30 shots were continuously formed, and the average value from 20 to 30 shots was evaluated as the vacuum adhesion in the present invention.
- Figure 6 shows the overall waveform during release.
- the initial peak I is the peak due to injection pressure
- the peak I I is the peak when ejector is ejected.
- Figure 7 shows a further enlargement of peak II.
- the peak of ⁇ is the peak due to vacuum adhesion at the molded product and mold interface
- the peak of jS is considered to be the peak due to the ledge of the edge of the molded product.
- the maximum value of the release peak of ⁇ is defined as the vacuum adhesion force for releasing the molded product from the vacuum adhesion state to the mold and evaluated.
- the vacuum adhesion force of the resin composition of the present invention is preferably from 300 to 800 N, more preferably from 300 to 60 N. If the vacuum adhesion is high, it may lead to product defects such as deformation during molding of portable key tops and cracking during painting due to high residual stress. If it is 30 ON, there will be no problem with mold release.
- the resin composition of the present invention is suitable as a molding material for a key of a terminal device.
- the present invention includes a molded article made of the resin composition.
- the molded article of the present invention preferably has a volume of 5 to 300 mm 3 , more preferably 10 to 200 mm 3 .
- the molded product of the present invention preferably has a thickness of about 0.2 to 0.8 mm, more preferably about 0.2 to 0.5 mm. Therefore, the molded article of the present invention is preferably a small molded article having a volume of about 5 to 300 mm 3 and a thickness of about 0.2 to 0.8 mm.
- the key is a terminal device key.
- the molding temperature of the resin composition of the present invention is preferably in the range of 3500 to 4200C. More preferably, it is 3600 ° C or more, and further preferably 3700 ° C or more. Also more preferred It is preferably 400 ° C. or lower, more preferably 39 ° C. or lower, particularly preferably 3 8 O t or lower.
- Examples of the molding method include injection molding, injection compression molding, injection press molding, extrusion compression molding, extrusion molding, rotational molding, professional molding, compression molding, inflation molding, calendar molding, vacuum molding, and foam molding.
- the most common are injection molding, injection compression molding, injection press molding, and extrusion compression molding.
- the molded product is transferred to the same or different mold, and another thermoplastic resin is molded, or two-color molding, or a thermosetting resin on the molded product of the present invention. In-mold coating can also be implemented.
- the maximum capacity of the cylinder is preferably 1.5 to 15 times the molded article capacity, more preferably 1.5 to 5 times, and most preferably 1.5 to 3 times.
- the present invention includes a method for producing a molded article comprising melting the resin composition to 3500 to 4200C and performing injection molding. Injection molding should be performed with a hot runner mold.
- the molded product is a key of the terminal device.
- the key of the terminal device is a switch mainly used for input of a portable terminal device.
- a light shielding layer is provided on the back surface, and a part of the light shielding layer is removed in the form of characters or symbols. By illuminating from the back of the top, letters and symbols are raised.
- Aromatic polycarbonate resin powder and pellets were weighed, burned in a mixed air flow of argon and oxygen, and titrated with the amount of electrification transfer of the silver electrode. The measurement was carried out with TOX-2100 H manufactured by Mitsubishi Chemical Corporation.
- a 2 mm thick square plate was molded from pellets using a Nippon Steel Tsunasho injection molding machine J 85—EL I I I with a cylinder temperature of 370 and a mold temperature of 80 ° C. for 1 minute cycle. After 20 shots were continuously formed, the resin was allowed to stay in the cylinder of the injection molding machine for 10 minutes to form a 2 mm thick square plate after the stay.
- the hue (L, a, b) of the flat plate before and after the residence was measured by the C light source reflection method using a color difference meter S E-2000 made by Nippon Denshoku Industries Co., Ltd., and the color difference ⁇ E was determined by the following formula.
- Hue of “plate for measurement before stay” L, a, b
- the fixed mold 1 is set at a mold temperature of 100 ° C. After filling and filling the cavity 3 between the movable die 2 at an injection pressure of 65 MPa, holding at 90 MPa holding pressure for 7 seconds, cooling and solidifying for 35 seconds, and then ejecting with an ejector pin (molded product)
- the vacuum adhesion to the mold during product release was measured by releasing the disk-shaped product (diameter 115 mm and thickness 3 mm shown in Figs. 3 and 4).
- the measurement data was taken into the monitoring system 10 and processed. The measurement was performed by 30 shots of continuous molding, and the average value from 20 to 30 shots was evaluated as the vacuum adhesion in the present invention (see FIGS. 2 and 5).
- Figure 6 shows the overall waveform representing the mold release force during mold release.
- the initial peak I is the peak due to injection pressure
- peak II is the peak when ejector is ejected.
- peak Fig. 7 shows a further enlargement of II.
- ⁇ and which are peaks caused by vacuum adhesion at the molded product and the mold interface.
- the peak of 3 is considered to be the peak due to the resistance of the molded product wedge part, and the vacuum adhesion for the molded product to release the maximum value (N) of the mold release peak from the vacuum adhesion state to the mold. Defined as force.
- the key simulated molded product of the mobile terminal SH904 i for NTT DoCoMo, Inc. was molded.
- Sumitomo SE-100D molding machine was used, and the cylinder temperature was 365 ° C, the mold temperature was 150 ° C, and the molding cycle was 40 s. The residence time was about 15 minutes.
- the key simulation molded product of the molded terminal device was evaluated with a key press testing machine. Evaluation was made with a 3 mm probe, and the key was pressed 3,00,00 times at a frequency of 5 Hz and a maximum load of 50 g. It was confirmed whether the molded product after keystroke was cracked or cracked.
- Figure 9 shows a schematic diagram of the equipment used.
- 14 is a phosgenation reactor with a saddle type blade
- 15 is a chemical solution (alkaline aqueous solution of aromatic bisphenol compound, organic solvent, molecular weight regulator, etc.) inlet
- 16 is a phosgene inlet
- 17 is a homomixer
- 18 is It is a polymerization reactor with a vertical blade.
- aqueous solution prepared by dissolving 23 parts by weight of bisphenol A and 0.005 parts by weight of hydrosulfite in 10.7 parts by weight of 10% NaOH aqueous solution is introduced into the phosgenation reactor 14 through the chemical inlet 15 and further methylene chloride 7 54 parts by weight were added from the chemical injection port 15 and phosgene was stirred at a rotational speed of 210 rpm and 1.12 parts by weight were blown in at a reaction temperature of 25 ⁇ 1 ° C for 90 minutes.
- aqueous solution of P-tert-butylphenol in NaOH (p-tert-butylphenol concentration 69.1 gZl, NaOH concentration 12.5 g / 1)
- the emulsion is fed to the polymerization reactor 18 as a highly emulsified state by stirring for 2 minutes at a rotational speed of 8,000 rpm with an SL-type homomixer 17, and left in a stationary state without stirring.
- ⁇ 1 The polymerization reaction was completed for 2 hours while maintaining the temperature of C.
- This solution contains 12% by weight of polycarbonate resin in the methylene chloride layer.
- the method was the same as in Synthesis Example 1 except that the drying time was 5 hours.
- the reaction was carried out in the same manner as in Synthesis Example 1 except that the reaction was allowed to proceed while stirring the reaction mixture at 200 rpm in the polymerization reactor 5.
- the resin composition blended with each component shown in Table 2 was extruded at 300 using TEX-30 «manufactured by Nippon Steel Works, and the strand was cut to obtain pellets. The obtained pellets were dried at 120 ° C for 4 hours. The above pellets (1) to (3) were evaluated using the pellets obtained. The results are shown in Table 1.
- the polycarbonate resin composition blended with the components shown in Table 3 was extruded at 300 ° C with TEX-30 manufactured by Nippon Steel Works, and the strand was cut to obtain a pellet. The obtained pellets were dried at 120 ° C. for 4 hours. Using the obtained pellets, the above (1), (2), (4) to (6) were evaluated. The results are shown in Table 2.
- Example 6 For the compositions of Example 6 and Comparative Example 6 that had no problems in the keystroke test, in the above (6) evaluation of physical properties, the key simulation mold was used, and the mold was used as a hot runner. Remodeled and molded. The hot runner temperature was set to 365, and the molding machine Sumitomo SE-1100D was used, and the molding was performed at a cylinder temperature of 365 ° C, a mold temperature of 150 ° C, and a molding cycle of 40 s. The residence time was about 22 minutes. When the appearance of the molded product was confirmed, in Example 6, discoloration and the like were at a level that was not visually recognized, but in the molded product of Comparative Example 6, discoloration was apparent.
- surface is as follows.
- PC 1 Aromatic polycarbonate with a molecular weight of 19,000 synthesized in Synthesis Example 1 Resin powder (chlorine atom content 380 p pm, terminal OH group content 15 eq / ton)
- PC 2 synthesized in Synthesis Example 2
- Aromatic polycarbonate resin powder with a molecular weight of 19,000 Chlorine atom content 1, 220 ppm, terminal OH group content 15 e qXt on
- PC3 Aromatic polycarbonate resin powder with molecular weight of 19,000 synthesized in Synthesis Example 3 (chlorine atom content 420 ppm, terminal OH group content 35 eq / ton) PC 1 to 3 are sometimes referred to as PC.
- A1 Phosphorus stabilizer P—EPQ manufactured by Clariant Japan
- P-EPQ was used after being treated for 24 hours at 50 ° C and 90% RH before use.
- Anthraquinone dyes that do not have OH functional groups in the skeleton
- L l, L2, Al, H4 are the weight of 100 parts by weight of Aromatic Poly (one component):
- L l, Al, HI-3 are aromatic polycarbonate (component A) parts by weight with respect to 100 parts by weight.
- L l, L2, Al, HI—3 is the weight of 100 parts by weight of Aromatic Poly Ponate (component A):
- the resin composition of the present invention does not cause defective release even by high-temperature molding, and the obtained molded product, in particular, the key of the terminal device has no discoloration and has a good hue, and has excellent transparency and strength. ing. Industrial applicability
- the resin composition of the present invention is useful as a molding material for a key of a terminal device.
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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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
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KR1020107007398A KR101504380B1 (ko) | 2007-12-07 | 2008-12-05 | 수지 조성물, 그 성형품 및 단말 장치의 키 |
US12/734,973 US20100255295A1 (en) | 2007-12-07 | 2008-12-05 | Resin composition, molded article thereof, and key for terminal equipment |
CN200880119490XA CN101889058B (zh) | 2007-12-07 | 2008-12-05 | 树脂组合物、其成型品和终端装置的键 |
JP2009544774A JP5294492B2 (ja) | 2007-12-07 | 2008-12-05 | 樹脂組成物、その成形品および端末装置のキー |
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JP2008-102348 | 2008-04-10 | ||
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US (1) | US20100255295A1 (ja) |
JP (1) | JP5294492B2 (ja) |
KR (1) | KR101504380B1 (ja) |
CN (1) | CN101889058B (ja) |
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Cited By (2)
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CN101927549A (zh) * | 2010-04-07 | 2010-12-29 | 上海南部塑料制品有限公司 | 超薄壁聚碳酸酯产品的热流道成型方法 |
JP2016507607A (ja) * | 2012-12-20 | 2016-03-10 | バイエル・マテリアルサイエンス・アクチェンゲゼルシャフトBayer MaterialScience AG | 有機着色剤および良好な加工特性を有する着色ポリマー組成物 |
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CN109181282A (zh) * | 2018-08-06 | 2019-01-11 | 南京欧纳壹有机光电有限公司 | 一种改性工程塑料制备工艺 |
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Also Published As
Publication number | Publication date |
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JP5294492B2 (ja) | 2013-09-18 |
TW200927829A (en) | 2009-07-01 |
CN101889058B (zh) | 2013-07-10 |
KR20100090678A (ko) | 2010-08-16 |
JPWO2009072671A1 (ja) | 2011-04-28 |
US20100255295A1 (en) | 2010-10-07 |
KR101504380B1 (ko) | 2015-03-19 |
CN101889058A (zh) | 2010-11-17 |
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