JP4919459B2 - Thermoplastic resin composition having excellent light diffusibility and light diffusing plate comprising the same - Google Patents
Thermoplastic resin composition having excellent light diffusibility and light diffusing plate comprising the same Download PDFInfo
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- JP4919459B2 JP4919459B2 JP2005333625A JP2005333625A JP4919459B2 JP 4919459 B2 JP4919459 B2 JP 4919459B2 JP 2005333625 A JP2005333625 A JP 2005333625A JP 2005333625 A JP2005333625 A JP 2005333625A JP 4919459 B2 JP4919459 B2 JP 4919459B2
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- JP
- Japan
- Prior art keywords
- light diffusing
- weight
- light
- thermoplastic resin
- resin composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920005992 thermoplastic resin Polymers 0.000 title claims description 16
- 239000011342 resin composition Substances 0.000 title claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 33
- 229920001610 polycaprolactone Polymers 0.000 claims description 27
- 239000004632 polycaprolactone Substances 0.000 claims description 27
- 229920005668 polycarbonate resin Polymers 0.000 claims description 19
- 239000004431 polycarbonate resin Substances 0.000 claims description 19
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 238000009792 diffusion process Methods 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 18
- 238000012360 testing method Methods 0.000 description 10
- -1 4-hydroxy-3,5-dichlorophenyl Chemical group 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 9
- 239000008188 pellet Substances 0.000 description 9
- 238000004040 coloring Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 6
- 239000000470 constituent Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000003063 flame retardant Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 239000004594 Masterbatch (MB) Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- YIMHRDBSVCPJOV-UHFFFAOYSA-N n'-(2-ethoxyphenyl)-n-(2-ethylphenyl)oxamide Chemical compound CCOC1=CC=CC=C1NC(=O)C(=O)NC1=CC=CC=C1CC YIMHRDBSVCPJOV-UHFFFAOYSA-N 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 3
- 229960001755 resorcinol Drugs 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 3
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 235000013871 bee wax Nutrition 0.000 description 2
- 239000012166 beeswax Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- VCCBEIPGXKNHFW-UHFFFAOYSA-N biphenyl-4,4'-diol Chemical group C1=CC(O)=CC=C1C1=CC=C(O)C=C1 VCCBEIPGXKNHFW-UHFFFAOYSA-N 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000001177 diphosphate Substances 0.000 description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 2
- 235000011180 diphosphates Nutrition 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 125000005027 hydroxyaryl group Chemical group 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- FTWUXYZHDFCGSV-UHFFFAOYSA-N n,n'-diphenyloxamide Chemical group C=1C=CC=CC=1NC(=O)C(=O)NC1=CC=CC=C1 FTWUXYZHDFCGSV-UHFFFAOYSA-N 0.000 description 2
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229920006352 transparent thermoplastic Polymers 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- HCNHNBLSNVSJTJ-UHFFFAOYSA-N 1,1-Bis(4-hydroxyphenyl)ethane Chemical compound C=1C=C(O)C=CC=1C(C)C1=CC=C(O)C=C1 HCNHNBLSNVSJTJ-UHFFFAOYSA-N 0.000 description 1
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- FDLFMPKQBNPIER-UHFFFAOYSA-N 1-methyl-3-(3-methylphenoxy)benzene Chemical compound CC1=CC=CC(OC=2C=C(C)C=CC=2)=C1 FDLFMPKQBNPIER-UHFFFAOYSA-N 0.000 description 1
- MXSKJYLPNPYQHH-UHFFFAOYSA-N 2,4-dimethyl-6-(1-methylcyclohexyl)phenol Chemical compound CC1=CC(C)=C(O)C(C2(C)CCCCC2)=C1 MXSKJYLPNPYQHH-UHFFFAOYSA-N 0.000 description 1
- CVEPFOUZABPRMK-UHFFFAOYSA-N 2-methylprop-2-enoic acid;styrene Chemical compound CC(=C)C(O)=O.C=CC1=CC=CC=C1 CVEPFOUZABPRMK-UHFFFAOYSA-N 0.000 description 1
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 description 1
- CKNCVRMXCLUOJI-UHFFFAOYSA-N 3,3'-dibromobisphenol A Chemical compound C=1C=C(O)C(Br)=CC=1C(C)(C)C1=CC=C(O)C(Br)=C1 CKNCVRMXCLUOJI-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- VWGKEVWFBOUAND-UHFFFAOYSA-N 4,4'-thiodiphenol Chemical compound C1=CC(O)=CC=C1SC1=CC=C(O)C=C1 VWGKEVWFBOUAND-UHFFFAOYSA-N 0.000 description 1
- NZGQHKSLKRFZFL-UHFFFAOYSA-N 4-(4-hydroxyphenoxy)phenol Chemical compound C1=CC(O)=CC=C1OC1=CC=C(O)C=C1 NZGQHKSLKRFZFL-UHFFFAOYSA-N 0.000 description 1
- RQCACQIALULDSK-UHFFFAOYSA-N 4-(4-hydroxyphenyl)sulfinylphenol Chemical compound C1=CC(O)=CC=C1S(=O)C1=CC=C(O)C=C1 RQCACQIALULDSK-UHFFFAOYSA-N 0.000 description 1
- RSSGMIIGVQRGDS-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)-phenylmethyl]phenol Chemical compound C1=CC(O)=CC=C1C(C=1C=CC(O)=CC=1)C1=CC=CC=C1 RSSGMIIGVQRGDS-UHFFFAOYSA-N 0.000 description 1
- BRPSWMCDEYMRPE-UHFFFAOYSA-N 4-[1,1-bis(4-hydroxyphenyl)ethyl]phenol Chemical compound C=1C=C(O)C=CC=1C(C=1C=CC(O)=CC=1)(C)C1=CC=C(O)C=C1 BRPSWMCDEYMRPE-UHFFFAOYSA-N 0.000 description 1
- QHJPJZROUNGTRJ-UHFFFAOYSA-N 4-[2-(4-hydroxyphenyl)octan-2-yl]phenol Chemical compound C=1C=C(O)C=CC=1C(C)(CCCCCC)C1=CC=C(O)C=C1 QHJPJZROUNGTRJ-UHFFFAOYSA-N 0.000 description 1
- GRCXOICCGCYITB-UHFFFAOYSA-N 4-[2-[2-[2-(4-hydroxyphenyl)-3-methylphenyl]propan-2-yl]-6-methylphenyl]phenol Chemical compound CC1=CC=CC(C(C)(C)C=2C(=C(C)C=CC=2)C=2C=CC(O)=CC=2)=C1C1=CC=C(O)C=C1 GRCXOICCGCYITB-UHFFFAOYSA-N 0.000 description 1
- RQTDWDATSAVLOR-UHFFFAOYSA-N 4-[3,5-bis(4-hydroxyphenyl)phenyl]phenol Chemical compound C1=CC(O)=CC=C1C1=CC(C=2C=CC(O)=CC=2)=CC(C=2C=CC(O)=CC=2)=C1 RQTDWDATSAVLOR-UHFFFAOYSA-N 0.000 description 1
- XHDKBYRAWKLXGE-UHFFFAOYSA-N 4-[4,6-bis(4-hydroxyphenyl)-4,6-dimethylhept-1-en-2-yl]phenol Chemical compound C=1C=C(O)C=CC=1C(C)(C)CC(C)(C=1C=CC(O)=CC=1)CC(=C)C1=CC=C(O)C=C1 XHDKBYRAWKLXGE-UHFFFAOYSA-N 0.000 description 1
- CIEGINNQDIULCT-UHFFFAOYSA-N 4-[4,6-bis(4-hydroxyphenyl)-4,6-dimethylheptan-2-yl]phenol Chemical compound C=1C=C(O)C=CC=1C(C)CC(C)(C=1C=CC(O)=CC=1)CC(C)(C)C1=CC=C(O)C=C1 CIEGINNQDIULCT-UHFFFAOYSA-N 0.000 description 1
- LHWZLUXODWUHLZ-UHFFFAOYSA-N 4-methyl-n-(4-methylphenyl)sulfonylbenzenesulfonamide Chemical compound C1=CC(C)=CC=C1S(=O)(=O)NS(=O)(=O)C1=CC=C(C)C=C1 LHWZLUXODWUHLZ-UHFFFAOYSA-N 0.000 description 1
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- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
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- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
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- LVTHXRLARFLXNR-UHFFFAOYSA-M potassium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate Chemical compound [K+].[O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LVTHXRLARFLXNR-UHFFFAOYSA-M 0.000 description 1
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- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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Description
本発明は、ポリカプロラクトンとポリカーボネート樹脂に、光拡散剤および特定の紫外線吸収剤を配合することにより、光拡散性、輝度、初期着色、耐光性を向上させた光拡散性樹脂組成物、ならびにそれからなる光拡散板に関する。詳しくは、光源を覆う部材、例えば液晶テレビの直下型バックライトユニットおよびエッジライト型ユニットの光拡散板、照明器具のグローブボックス、各種デバイスのスイッチ類および光拡散性を必要とする用途全般などに好適に用いられる、初期着色の少ない光拡散性に優れた熱可塑性樹脂組成物およびそれを成形してなる光拡散板を提供するものである。
The present invention relates to a light diffusing resin composition having improved light diffusibility, luminance, initial coloration, and light resistance by incorporating a light diffusing agent and a specific ultraviolet absorber into polycaprolactone and polycarbonate resin, and A light diffusing plate. Specifically, for members that cover the light source, for example, light diffusing plates of direct-type backlight units and edge light type units of liquid crystal televisions, glove boxes of lighting fixtures, switches of various devices, and general applications that require light diffusibility The present invention provides a thermoplastic resin composition that is suitably used and has low initial coloration and excellent light diffusibility, and a light diffusing plate formed by molding the same.
透明な熱可塑性樹脂は、光透過性を有することから電気・電子・ＯＡ、自動車などの分野において広範に使用されており、各分野ではそれぞれ求められる要求性能を満足する樹脂が選択され使い分けがなされている。特に、液晶テレビの直下型およびエッジライト型ユニット、照明器具カバーおよび各種デバイスのスイッチ類などの用途では、優れた透明性のみならず、内部の光源（ランプ）の形状を認識させることなく、また光源の輝度をできるだけ損なわない程度の光拡散性を付与した材料が望まれている。さらには、耐光性、即ち光源による樹脂成形品の変色防止が求められており、種々の紫外線吸収剤を用いて耐光性を付与する方法が検討されてきた。
しかしながら、熱可塑性樹脂の成形温度は２４０〜３８０℃と比較的高く、従来の紫外線吸収剤では融点が低いことなどから、成形加工の際に紫外線吸収剤の一部が蒸散し、熱可塑性樹脂の色相の黄変や外観不良をもたらすといった問題点があった。 However, since the molding temperature of the thermoplastic resin is relatively high at 240 to 380 ° C., and the melting point of the conventional ultraviolet absorber is low, a part of the ultraviolet absorber is evaporated during the molding process. There were problems such as yellowing of the hue and poor appearance.
本発明者らは、かかる問題点に鑑み鋭意検討を行った結果、透明な熱可塑性樹脂にポリカプロラクトンおよび光拡散剤、及び特定の紫外線吸収剤を配合することにより、優れた光拡散性と輝度及び耐光性を有し、かつ初期着色の少ない、より一層高度な光学的性能を有する光拡散板を得ることができる熱可塑性樹脂組成物を見出し、本発明を完成した。 As a result of intensive studies in view of such problems, the present inventors have obtained excellent light diffusibility and brightness by blending polycaprolactone, a light diffusing agent, and a specific ultraviolet absorber with a transparent thermoplastic resin. And the thermoplastic resin composition which can obtain the light-diffusion board which has light resistance and little initial coloring and which has much higher optical performance was discovered, and this invention was completed.
すなわち、本発明は、ポリカプロラクトン（Ａ）０．１〜１５重量％およびポリカーボネート樹脂（Ｂ）８５〜９９．９重量％からなる樹脂成分１００重量部、光拡散剤（Ｃ）０．１〜８重量部および特定の紫外線吸収剤（Ｄ）０．０１〜０．８重量部からなり、前記光拡散剤（Ｃ）がアクリル系光拡散剤またはメチルシリコーン系光拡散剤であることを特徴とする光拡散性に優れた熱可塑性樹脂組成物、ならびにそれを成形してなる光拡散板を提供するものである。
That is, the present invention relates to 100 parts by weight of a resin component consisting of 0.1 to 15% by weight of polycaprolactone (A) and 85 to 99.9% by weight of polycarbonate resin (B), and 0.1 to 8 of a light diffusing agent (C). and wherein the parts by weight of specific ultraviolet absorber (D) Ri Do from 0.01 to 0.8 parts by weight, the light diffusing agent (C) is an acrylic light diffusing agent or a methyl silicone-based light diffusing agent The present invention provides a thermoplastic resin composition having excellent light diffusibility and a light diffusing plate formed by molding the same.
本発明の光拡散性に優れた熱可塑性樹脂組成物を成形して得られる光拡散板は、熱可塑性樹脂の色相の黄変や外観不良をもたらすことなく光拡散性を必要とする用途全般に好適に用いられ、より一層高度な光拡散性、輝度、初期着色、耐光性という光学的性能を有している。 The light diffusing plate obtained by molding the thermoplastic resin composition excellent in light diffusibility of the present invention is used in all applications that require light diffusivity without causing yellowing of the hue of the thermoplastic resin and poor appearance. It is preferably used and has optical performances such as higher light diffusibility, brightness, initial coloring, and light resistance.
本発明にて使用されるポリカプロラクトン（Ａ）は、ε−カプロラクトンを触媒存在下で開環重合して製造されるポリマーであり、とりわけ２−オキセパノンのホモポリマーが好適に用いられる。該ポリマーは市販品として容易に入手可能で、ダウ・ケミカル社製ＴＯＮＥポリマー、ソルベイ社製ＣＡＰＡなどが用いられる。ポリカプロラクトン（Ａ）の粘度平均分子量は４００００〜９００００である。
The polycaprolactone (A) used in the present invention is a polymer produced by ring-opening polymerization of ε-caprolactone in the presence of a catalyst, and in particular, a homopolymer of 2-oxepanone is preferably used. The polymer is easily available as a commercial product, and TONE polymer manufactured by Dow Chemical Company, CAPA manufactured by Solvay Company, etc. are used. The viscosity average molecular weight of the polycaprolactone (A) is 40,000 to 90,000 .
さらに、ポリカプロラクトン（Ａ）には、ε−カプロラクトンを開環重合させる際に、１，４−ブタンジオールなどと共存させて変性したものや分子末端をエーテルあるいはエステル基などで置換した変性ポリカプロラクトンも含まれる。 In addition, polycaprolactone (A) includes a modified polycaprolactone in which ε-caprolactone is modified by ring-opening polymerization in the presence of 1,4-butanediol or the like, or a molecular end substituted with an ether or ester group. Is also included.
ポリカプロラクトン（Ａ）の組成比率は、ポリカーボネート樹脂（Ｂ）からなる（Ａ）および（Ｂ）の樹脂成分の合計量に基づいて０．１〜１５重量％である。組成比率が０．１重量％未満であると、光拡散効果が得られず、十分な輝度が得られないため好ましくない。一方、１５重量％を超えると、極端な耐熱性の低下が起こり、成形加工前の予備乾燥工程においてペレットが固着し、ブロッキングが発生することから好ましくない。より好ましい組成比率としては、０．３〜１０重量％である。
The composition ratio of the polycaprolactone (A) is 0.1 to 15% by weight based on the total amount of the resin components (A) and (B) made of the polycarbonate resin (B). When the composition ratio is less than 0.1% by weight, the light diffusion effect cannot be obtained and sufficient luminance cannot be obtained, which is not preferable. On the other hand, if it exceeds 15% by weight, an extreme decrease in heat resistance occurs, and the pellets are fixed in the pre-drying step before the molding process, and blocking is not preferable. A more preferable composition ratio is 0.3 to 10% by weight.
本発明に使用されるポリカーボネート樹脂とは、種々のジヒドロキシジアリール化合物とホスゲンとを反応させるホスゲン法、またはジヒドロキシジアリール化合物とジフェニルカーボネートなどの炭酸エステルとを反応させるエステル交換法によって得られる重合体であり、代表的なものとしては、２，２−ビス（４−ヒドロキシフェニル）プロパン（ビスフェノールＡ）から製造されたポリカーボネート樹脂が挙げられる。
The polycarbonate resin used in the present invention is a polymer obtained by a phosgene method in which various dihydroxydiaryl compounds and phosgene are reacted, or a transesterification method in which a dihydroxydiaryl compound and a carbonate such as diphenyl carbonate are reacted. A typical example is polycarbonate resin produced from 2,2-bis (4-hydroxyphenyl) propane (bisphenol A).
上記ジヒドロキシジアリール化合物としては、ビスフェノールＡの他に、ビス（４−ヒドロキシフェニル）メタン、１，１−ビス（４−ヒドロキシフェニル）エタン、２，２−ビス（４−ヒドロキシフェニル）ブタン、２，２−ビス（４−ヒドロキシフェニル）オクタン、ビス（４−ヒドロキシフェニル）フェニルメタン、２，２−ビス（４−ヒドロキシフェニル−３−メチルフェニル）プロパン、１，１−ビス（４−ヒドロキシ−３−第三ブチルフェニル）プロパン、２，２−ビス（４−ヒドロキシ−３−ブロモフェニル）プロパン、２，２−ビス（４−ヒドロキシ−３、５−ジブロモフェニル）プロパン、２，２−ビス（４−ヒドロキシ−３，５−ジクロロフェニル）プロパンのようなビス（ヒドロキシアリール）アルカン類、１，１−ビス（４−ヒドロキシフェニル）シクロペンタン、１，１−ビス（４−ヒドロキシフェニル）シクロヘキサンのようなビス（ヒドロキシアリール）シクロアルカン類、４，４′−ジヒドロキシジフェニルエーテル、４，４′−ジヒドロキシ−３，３′−ジメチルジフェニルエーテルのようなジヒドロキシジアリールエーテル類、４，４′−ジヒドロキシジフェニルスルフィドのようなジヒドロキシジアリールスルフィド類、４，４′−ジヒドロキシジフェニルスルホキシド、４，４′−ジヒドロキシ−３，３′−ジメチルジフェニルスルホキシドのようなジヒドロキシジアリールスルホキシド類、４，４′−ジヒドロキシジフェニルスルホン、４，４′−ジヒドロキシ−３，３′−ジメチルジフェニルスルホンのようなジヒドロキシジアリールスルホン類等が挙げられる。これらは、単独または２種類以上混合して使用される。これらの他に、ピペラジン、ジピペリジルハイドロキノン、レゾルシン、４，４′−ジヒドロキシジフェニル等を混合して使用してもよい。 Examples of the dihydroxydiaryl compound include bisphenol 4-, bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, 2,2-bis (4-hydroxyphenyl) butane, 2, 2-bis (4-hydroxyphenyl) octane, bis (4-hydroxyphenyl) phenylmethane, 2,2-bis (4-hydroxyphenyl-3-methylphenyl) propane, 1,1-bis (4-hydroxy-3) -Tert-butylphenyl) propane, 2,2-bis (4-hydroxy-3-bromophenyl) propane, 2,2-bis (4-hydroxy-3,5-dibromophenyl) propane, 2,2-bis ( Bis (hydroxyaryl) alkanes such as 4-hydroxy-3,5-dichlorophenyl) propane, 1,1- (4-hydroxyphenyl) cyclopentane, bis (hydroxyaryl) cycloalkanes such as 1,1-bis (4-hydroxyphenyl) cyclohexane, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3 Dihydroxy diaryl ethers such as 3,3'-dimethyldiphenyl ether, dihydroxy diaryl sulfides such as 4,4'-dihydroxydiphenyl sulfide, 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy-3,3 ' Dihydroxy diaryl sulfoxides such as dimethyldiphenyl sulfoxide, dihydroxy diary such as 4,4'-dihydroxydiphenyl sulfone, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfone Sulfone, and the like. These are used individually or in mixture of 2 or more types. In addition to these, piperazine, dipiperidyl hydroquinone, resorcin, 4,4'-dihydroxydiphenyl, and the like may be mixed and used.
さらに、上記のジヒドロキシアリール化合物と以下に示すような３価以上のフェノール化合物を混合使用してもよい。３価以上のフェノールとしてはフロログルシン、４，６−ジメチル−２，４，６−トリ−（４−ヒドロキシフェニル）−ヘプテン、２，４，６−ジメチル−２，４，６−トリ−（４−ヒドロキシフェニル）−ヘプタン、１，３，５−トリ−（４−ヒドロキシフェニル）−ベンゾール、１，１，１−トリ−（４−ヒドロキシフェニル）−エタンおよび２，２−ビス−［４，４−（４，４′−ジヒドロキシジフェニル）−シクロヘキシル］−プロパンなどが挙げられる。 Furthermore, the above dihydroxyaryl compound and a trivalent or higher phenol compound as shown below may be used in combination. Trihydric or higher phenols include phloroglucin, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -heptene, 2,4,6-dimethyl-2,4,6-tri- (4 -Hydroxyphenyl) -heptane, 1,3,5-tri- (4-hydroxyphenyl) -benzol, 1,1,1-tri- (4-hydroxyphenyl) -ethane and 2,2-bis- [4 4- (4,4'-dihydroxydiphenyl) -cyclohexyl] -propane and the like.
ポリカーボネート樹脂の粘度平均分子量は、通常１００００〜１０００００、好ましくは１５０００〜３５０００、さらに好ましくは１７０００〜２８０００である。かかるポリカーボネート樹脂を製造するに際し、分子量調節剤、触媒等を必要に応じて使用することができる。 The viscosity average molecular weight of the polycarbonate resin is usually 10,000 to 100,000, preferably 15,000 to 35,000, and more preferably 17,000 to 28,000. In producing such a polycarbonate resin, a molecular weight regulator, a catalyst and the like can be used as necessary.
本発明にて使用される光拡散剤（Ｃ）とは、高分子系および無機系など化学組成上特に制限はないが、本発明の樹脂成分（Ａ）および／または熱可塑性樹脂（Ｂ）に光拡散剤（Ｃ）を添加し、押出機による溶融混合など公知の方法にて分散させた際にマトリックス相と相溶しないか、あるいは相溶しにくく粒子として存在することが必要である。 The light diffusing agent (C) used in the present invention is not particularly limited in terms of chemical composition such as polymer and inorganic, but the resin component (A) and / or thermoplastic resin (B) of the present invention is not limited. When the light diffusing agent (C) is added and dispersed by a known method such as melt mixing with an extruder, it is necessary that the light diffusing agent (C) is not compatible with the matrix phase or is present as particles that are hardly compatible.
光拡散剤（Ｃ）の具体例としては、炭酸カルシウム、シリカ、シリコーン、硫化亜鉛、酸化亜鉛、酸化チタン、リン酸チタン、チタン酸マグネシウム、チタン酸マグネシウム、マイカ、ガラスフィラー、硫酸バリウム、クレー、タルク、シリコーンゴム状弾性体、ポリメチルシルセスオキサンなどの無機系拡散剤、アクリル系、スチレン系、ポリエステル系、ポリオレフィン系、ウレタン系、ナイロン系、メタクリレート−スチレン系、フッ素系、ノルボルネン系などの有機系拡散剤などが挙げられる。 Specific examples of the light diffusing agent (C) include calcium carbonate, silica, silicone, zinc sulfide, zinc oxide, titanium oxide, titanium phosphate, magnesium titanate, magnesium titanate, mica, glass filler, barium sulfate, clay, Inorganic diffusing agents such as talc, silicone rubber elastic, polymethylsilsesoxane, acrylic, styrene, polyester, polyolefin, urethane, nylon, methacrylate-styrene, fluorine, norbornene, etc. And organic diffusing agents.
さらに、光拡散剤（Ｃ）の粒子径としては、該拡散剤を添加することにより所望の光拡散性が得られるものであれば特に制限はないが、平均粒子径として１〜３０μｍ程度のものが好適に使用できる。１μｍ未満であると光を透過するのみで、もはや光拡散効果が得られにくくなる場合がある。一方、３０μｍを超えると、十分な光拡散効果が得られず視認性に劣る場合がある。また、粒径分布としては特に制限はないが、０．１〜１００μｍ程度であり、さらに、１．５〜２５μｍの範囲でより好適に使用できる。さらに、平均粒子径、粒径分布および種類の異なる２種類以上の光拡散剤を併用してもよく、粒径分布が一様ではなく、２つ以上の粒径分布を有するものなどを単独または併用して使用することもできる。 Furthermore, the particle size of the light diffusing agent (C) is not particularly limited as long as the desired light diffusibility can be obtained by adding the diffusing agent, but the average particle size is about 1 to 30 μm. Can be suitably used. If the thickness is less than 1 μm, only light is transmitted, and it may be difficult to obtain a light diffusion effect. On the other hand, if it exceeds 30 μm, a sufficient light diffusion effect cannot be obtained and visibility may be inferior. Moreover, there is no restriction | limiting in particular as particle size distribution, However, It is about 0.1-100 micrometers, Furthermore, it can use more suitably in the range of 1.5-25 micrometers. Further, two or more kinds of light diffusing agents having different average particle sizes, particle size distributions, and types may be used in combination, and the particle size distribution is not uniform, and those having two or more particle size distributions are used alone or It can also be used in combination.
光拡散剤（Ｃ）の配合量としては、本発明の（Ａ）および（Ｂ）からなる樹脂成分１００重量部あたり０．１〜８重量部である。配合量が０．１重量部未満であると十分な光拡散効果が得られにくくなるため好ましくない。一方、８重量部を越えると光の透過性が損なわれ、十分な光拡散性能が得られなくなるため好ましくない。より好ましくは、０．２〜６重量部の範囲である。 As a compounding quantity of a light-diffusion agent (C), it is 0.1-8 weight part per 100 weight part of resin components which consist of (A) and (B) of this invention. If the blending amount is less than 0.1 parts by weight, it is difficult to obtain a sufficient light diffusion effect, which is not preferable. On the other hand, if the amount exceeds 8 parts by weight, the light transmission property is impaired, and sufficient light diffusion performance cannot be obtained. More preferably, it is the range of 0.2-6 weight part.
本発明にて使用される紫外線吸収剤（Ｄ）としては、下記一般式（１）に示されるようなオキサニリド骨格中の２つの窒素原子に対して、アルキルアリル基及び２−アルコキシアルキル基を対称的に置換した構造を有する化合物等が挙げられ、とりわけＮ-(２-エチルフェニル）−Ｎ'−（２−エトキシフェニル）シュウ酸ジアミドが好適に用いられる。該紫外線吸収剤は市販品として容易に入手可能で、クラリアントジャパン社製Ｓａｎｄｕｖｏｒ ＶＳＵなどが挙げられる。
一般式（１）
As the ultraviolet absorber (D) used in the present invention, an alkylallyl group and a 2-alkoxyalkyl group are symmetrical with respect to two nitrogen atoms in the oxanilide skeleton as represented by the following general formula (1). In particular, N- (2-ethylphenyl) -N ′-(2-ethoxyphenyl) oxalic acid diamide is preferably used. The ultraviolet absorber is easily available as a commercial product, and examples include Sanduvor VSU manufactured by Clariant Japan.
General formula (1)
（Ｒ１は炭素数１〜１２のアルキルアリル基、Ｒ２は炭素数１〜１２の２−アルコキシアルキル基を表わす。）
(R1 represents an alkylallyl group having 1 to 12 carbon atoms, and R2 represents a 2-alkoxyalkyl group having 1 to 12 carbon atoms.)
紫外線吸収剤（Ｄ）の配合量としては、（Ａ）および（Ｂ）からなる樹脂成分１００重量部あたり０．０１〜０．８重量部である。配合量が０．０１重量部未満であると十分な耐光性が得られにくくなるため好ましくない。一方、添加量が１重量部を超えると熱安定性が悪化するため好ましくない。より好ましくは０．０５〜０．６重量部の範囲である。 As a compounding quantity of a ultraviolet absorber (D), it is 0.01-0.8 weight part per 100 weight part of resin components which consist of (A) and (B). If the blending amount is less than 0.01 parts by weight, it is not preferable because sufficient light resistance is hardly obtained. On the other hand, when the addition amount exceeds 1 part by weight, the thermal stability is deteriorated, which is not preferable. More preferably, it is the range of 0.05-0.6 weight part.
本発明の光拡散性に優れた熱可塑性樹脂組成物において、実用上、光拡散性以外に要求される性能により、公知の各種添加剤、ポリマーなどを必要に応じて添加することができる。例えば、長期間、光に暴露された際の樹脂成形品の変色を抑制するために、ヒンダードアミン系の耐光安定剤を、さらに、鮮やかな色調を得るために、ベンゾオキサゾール系の蛍光増白剤およびこれらを併用して添加してもよい。 In the thermoplastic resin composition excellent in light diffusibility of the present invention, various known additives, polymers, and the like can be added as necessary depending on the performance required in addition to the light diffusibility. For example, in order to suppress discoloration of the resin molded product when exposed to light for a long period of time, a hindered amine-based light-resistant stabilizer is used, and further, in order to obtain a vivid color tone, a benzoxazole-based fluorescent whitening agent and These may be added in combination.
また、難燃性が必要とされる場合、公知の各種難燃剤、例えば、テトラブロモビスフェノールＡオリゴマーなどの臭素系難燃剤、トリフェニルホスフェート、トリクレジルホスフェートなどのモノリン酸エステル類、ビスフェノールＡジホスフェート、レゾルシンジホスフェート、テトラキシレニルレゾルシンジホスフェートなどオリゴマータイプの縮合リン酸エステル類、ポリリン酸アンモニウムおよび赤燐などのリン系難燃剤、各種シリコーン系難燃剤、あるいは難燃性をより高めるために、芳香族スルホン酸の金属塩、パーフルオロアルカンスルホン酸の金属塩があげられ、好適には、４−メチル−Ｎ−（４−メチルフェニル）スルフォニル−ベンゼンスルフォンアミドのカリウム塩、ジフェニルスルホン−３−スルホン酸カリウム、ジフェニルスルホン−３−３′−ジスルホン酸カリウム、パラトルエンスルホン酸ナトリウム、パーフルオロブタンスルホン酸カリウム塩等などの有機金属塩なども添加することができる。これらの難燃剤の中でも、リン系難燃剤は、難燃性を向上させるばかりでなく、流動性をも向上させることができることから好適に用いることができる。 When flame retardancy is required, various known flame retardants, for example, brominated flame retardants such as tetrabromobisphenol A oligomers, monophosphate esters such as triphenyl phosphate and tricresyl phosphate, bisphenol A diesters, etc. In order to further improve the flame retardancy, phosphorous flame retardants such as phosphate-type condensed phosphates such as phosphate, resorcin diphosphate, tetraxylenyl resorcin diphosphate, ammonium polyphosphate and red phosphorus, various silicone flame retardants And metal salts of aromatic sulfonic acid and perfluoroalkanesulfonic acid, preferably 4-methyl-N- (4-methylphenyl) sulfonyl-benzenesulfonamide potassium salt, diphenylsulfone- 3- potassium sulfonate, Potassium phenyl sulfonic -3-3'- disulfonic acid, sodium para-toluene sulfonic acid, also organic metal salts such as potassium perfluorobutane sulfonate and the like may be added. Among these flame retardants, phosphorus-based flame retardants can be suitably used because they can improve not only flame retardancy but also fluidity.
本発明の光拡散性に優れた熱可塑性樹脂組成物には、上記以外の公知の添加剤、例えばフェノール系またはリン系熱安定剤［２，６−ジ−ｔ−ブチル−４−メチルフェノール、２−（１−メチルシクロヘキシル）−４，６−ジメチルフェノール、４，４′−チオビス−（６−ｔ−ブチル−３−メチルフェノール）、２，２−メチレンビス−（４−エチル−６−ｔ−メチルフェノール）、ｎ−オクタデシル−３−（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）プロピオネート、トリス（２，４−ジ−ｔ−ブチルフェニル）フォスファイト、４，４′−ビフェニレンジホスフィン酸テトラキス−（２，４−ジ−ｔ−ブチルフェニル）等］、滑剤［パラフィンワックス、ｎ−ブチルステアレート、合成蜜蝋、天然蜜蝋、グリセリンモノエステル、モンタン酸ワックス、ポリエチレンワックス、ペンタエリスリトールテトラステアレート等］、着色剤［例えば酸化チタン、カーボンブラック、染料］、充填剤［炭酸カルシウム、クレー、シリカ、ガラス繊維、ガラス球、ガラスフレーク、カーボン繊維、タルク、マイカ、各種ウィスカー類等］、流動性改良剤、展着剤［エポキシ化大豆油、流動パラフィン等］、さらには他の熱可塑性樹脂や各種耐衝撃改良剤（ポリブタジエン、ポリアクリル酸エステル、エチレン・プロピレン系ゴム等のゴムに、メタアクリル酸エステル、スチレン、アクリロニトリル等の化合物をグラフト重合してなるゴム強化樹脂等が例示される。）を必要に応じて添加することができる。 In the thermoplastic resin composition excellent in light diffusibility of the present invention, known additives other than those described above, such as phenol-based or phosphorus-based heat stabilizer [2,6-di-t-butyl-4-methylphenol, 2- (1-methylcyclohexyl) -4,6-dimethylphenol, 4,4'-thiobis- (6-tert-butyl-3-methylphenol), 2,2-methylenebis- (4-ethyl-6-t) -Methylphenol), n-octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, tris (2,4-di-t-butylphenyl) phosphite, 4,4'- Biphenylene diphosphinic acid tetrakis- (2,4-di-t-butylphenyl), etc.], lubricant [paraffin wax, n-butyl stearate, synthetic beeswax, natural beeswax, glycerin monoes , Montanic acid wax, polyethylene wax, pentaerythritol tetrastearate, etc.], colorant [eg titanium oxide, carbon black, dye], filler [calcium carbonate, clay, silica, glass fiber, glass sphere, glass flake, carbon Fiber, talc, mica, various whiskers, etc.], fluidity improver, spreading agent [epoxidized soybean oil, liquid paraffin, etc.], and other thermoplastic resins and various impact modifiers (polybutadiene, polyacrylic acid) A rubber-reinforced resin obtained by graft polymerization of a compound such as methacrylic acid ester, styrene, acrylonitrile, etc. to a rubber such as an ester or ethylene / propylene rubber may be added as necessary.
本発明における実施の形態および順序には何ら制限はない。例えば、ポリカプロラクトン（Ａ）とポリカーボネート樹脂（Ｂ）および光拡散剤（Ｃ）ならびに紫外線吸収剤（Ｄ）を任意の配合量で計量し、タンブラー、リボブレンダー、高速ミキサー等により一括混合した後、混合物を通常の一軸または二軸押出機を用いて溶融混練し、ペレット化させる方法、あるいは、各々の成分を一部または全てを別々に計量し、複数の供給装置から押出機内へ投入し、溶融混合する方法、さらには、ポリカーボネート樹脂（Ａ）に対して、ポリカプロラクトン（Ａ）および／または光拡散剤（Ｃ）および／または紫外線吸収剤（Ｄ）を高濃度に配合し、一旦溶融混合してペレット化し、マスターバッチとした後、当該マスターバッチとポリカーボネート樹脂（Ｂ）を、所望の比率により混合することもできる。そして、これらの成分を溶融混合する際の、押出機の投入する位置、押出温度、スクリュー回転数、供給量など、状況に応じて任意の条件が選択され、ペレット化することができる。さらに、該マスターバッチとポリカーボネート樹脂（Ｂ）とを、所望の比率により乾式混合後、射出成形装置やシート押出機装置に直接投入し、成形品とすることも可能である。
There is no restriction | limiting in the embodiment and order in this invention. For example, after measuring polycaprolactone (A), polycarbonate resin (B), light diffusing agent (C), and ultraviolet absorber (D) in an arbitrary blending amount, and batch-mixing with a tumbler, riboblender, high-speed mixer, etc. Melt and knead the mixture using a normal single or twin screw extruder and pelletize, or weigh each or part of each component separately and feed them into the extruder from multiple feeders. The method of mixing, and further, polycaprolactone (A) and / or light diffusing agent (C) and / or ultraviolet absorber (D) are blended at a high concentration with respect to the polycarbonate resin (A), and once melt mixed. After being pelletized into a master batch, the master batch and the polycarbonate resin (B) can be mixed at a desired ratio. Then, when these components are melt-mixed, arbitrary conditions such as the position at which the extruder is introduced, the extrusion temperature, the screw rotation speed, the supply amount, and the like can be selected and pelletized. Furthermore, the masterbatch and the polycarbonate resin (B) can be directly mixed into an injection molding apparatus or a sheet extruder apparatus after dry mixing at a desired ratio to obtain a molded product.
以下、本発明を実施例により説明するが、本発明はこれら実施例に限定されるものではない。尚、特に断りのない限り、実施例中の「％」、「部」はそれぞれ重量基準に基づく。 EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited to these Examples. Unless otherwise specified, “%” and “part” in the examples are based on weight standards.
尚、使用した原材料は以下のものである。
ポリカプロラクトン：
ソルベイ社製ＣＡＰＡ６８００
（粘度平均分子量：８００００、以下ＰＣＬ−１と略記）
ソルベイ社製ＣＡＰＡ６５００Ｃ
（粘度平均分子量：５００００、以下ＰＣＬ−２と略記）
ダウ・ケミカル社製トーンポリマーＰ−７８７
（粘度平均分子量：８００００、以下ＰＣＬ−３と略記）
ポリカーボネート樹脂：
住友ダウ社製カリバー２００−３
（粘度平均分子量：２８０００、以下ＰＣと略記）
光拡散剤：
ローム・アンド・ハース社製ＥＸＬ−５１３６
（アクリル系拡散剤、以下ＬＤ−１と略記）
日興リカ社製ＭＳＰ−Ｓ０２０
（メチルシリコーン系拡散剤、以下ＬＤ−２と略記）
紫外線吸収剤：
クラリアントジャパン社製 Ｓａｎｄｕｖｏｒ ＶＳＵ
（オキサニリド系紫外線吸収剤、以下ＵＶＡと略記）
The raw materials used are as follows.
Polycaprolactone:
CAPA6800 manufactured by Solvay
(Viscosity average molecular weight: 80000, hereinafter abbreviated as PCL-1)
CAPA6500C made by Solvay
(Viscosity average molecular weight: 50000, hereinafter abbreviated as PCL-2)
Tone polymer P-787 manufactured by Dow Chemical Company
(Viscosity average molecular weight: 80000, hereinafter abbreviated as PCL-3)
Polycarbonate resin:
Caliber 200-3 manufactured by Sumitomo Dow
(Viscosity average molecular weight: 28000, hereinafter abbreviated as PC)
Light diffusing agent:
EXL-5136 manufactured by Rohm and Haas
(Acrylic diffusing agent, hereinafter abbreviated as LD-1)
MSP-S020 made by Nikko Rica
(Methyl silicone-based diffusing agent, hereinafter abbreviated as LD-2)
UV absorber:
Sanduvor VSU made by Clariant Japan
(Oxanilide UV absorber, hereinafter abbreviated as UVA)
本発明における各種評価項目及び測定方法について説明する。
１．成形性の評価
射出成形機を用いて平板試験片を作成する際に、成形に供するペレットにおいて、予備乾燥後の該ペレットの状態を目視により確認し、ペレットが互いに固着した状態で成形が困難であるものを不合格（×）、問題なく成形できるものを合格（○）とした。
Various evaluation items and measurement methods in the present invention will be described.
1. Evaluation of moldability When preparing flat plate test pieces using an injection molding machine, in the pellets used for molding, the state of the pellets after preliminary drying is visually confirmed, and molding is difficult with the pellets fixed to each other. Some were rejected (x), and those that could be molded without problems were marked as acceptable (O).
２．初期着色及び耐光性の評価
射出成形機により作成した平板試験片（３ｃｍ×３ｃｍ×２ｍｍ厚み）を用いて、超促進耐候試験機アイスーパーＵＶテスター（岩崎電気社製ＳＵＶ−Ｗ１３）の中に設置し、６時間照射を行った。その後、照射前後の試料をスペクトロフォトメーター（村上色彩研究所社製ＣＭＳ−３５ＳＰ）により、黄色度（ＹＩ）を測定した。ＹＩとは、照射前の黄味の程度を表し、ＹＩが小さい程、黄味は小さく、初期着色が少ない。ＹＩの評価の基準としては、ＹＩの値が０未満であるものを合格（○）、０以上であるものを不合格（×）とした。また、ΔＹＩとは、照射前後の黄味の程度の差を表し、ΔＹＩが小さい程、変色は小さく耐光性に優れている。ΔＹＩの評価の基準としては、ΔＹＩの値が１２未満であるものを合格（○）、１２以上であるものを不合格（×）とした。
2. Initial coloring and light resistance evaluation Installed in a super accelerated weathering tester iSuper UV Tester (SUV-W13 manufactured by Iwasaki Electric Co., Ltd.) using a flat plate test piece (3 cm x 3 cm x 2 mm thickness) prepared by an injection molding machine. Then, irradiation was performed for 6 hours. Thereafter, the yellowness (YI) of the sample before and after irradiation was measured with a spectrophotometer (CMS-35SP manufactured by Murakami Color Research Laboratory). YI represents the degree of yellowness before irradiation. The smaller the YI, the smaller the yellowishness and the less the initial coloring. As a criterion for evaluating YI, a YI value of less than 0 was accepted (◯), and a YI value of 0 or more was rejected (x). ΔYI represents the difference in yellowness before and after irradiation. The smaller the ΔYI, the smaller the color change and the better the light resistance. As a reference for evaluation of ΔYI, a value of ΔYI of less than 12 was accepted (◯), and a value of 12 or more was rejected (x).
３．輝度の測定
２本の冷陰極管を平板試験片（９０ｍｍ×５０ｍｍ×２ｍｍの厚み）の裏側に配置し、ランプ間の垂直方向にある試験片表面上の輝度を測定した。尚、輝度とは、ある方向に向かう光度の、その方向に垂直な面における単位面積当たりの割合のことをいい、一般に、発光面の明るさの程度を表す[単位:(ｃｄ/ｍ２)]。また、評価の基準としては、ランプ間輝度の測定値が４４２５ｃｄ／ｍ２以上であるものを合格（○）、４４２５ｃｄ／ｍ２未満であるものを不合格（×）とした。また、測定方法の概略を図１に示す。
3. Measurement of Luminance Two cold cathode tubes were placed on the back side of a flat test piece (90 mm × 50 mm × 2 mm thickness), and the luminance on the surface of the test piece in the vertical direction between the lamps was measured. The luminance means the ratio of the luminous intensity directed in a certain direction per unit area in a plane perpendicular to the direction, and generally represents the degree of brightness of the light emitting surface [unit: (cd / m 2 ). ]. In addition, as evaluation criteria, a lamp brightness measured value of 4425 cd / m 2 or more was accepted (◯), and a value less than 4425 cd / m 2 was rejected (x). An outline of the measurement method is shown in FIG.
４．総合判定
成形性、輝度、初期着色及び耐光性の評価において、全てを満足するものを合格（○）そうでないものを不合格（×）とした。
4). Comprehensive judgment In the evaluation of moldability, luminance, initial coloration and light resistance, those satisfying all were judged as acceptable (◯) and those not satisfied were judged as unacceptable (x).
（実施例１〜実施例６）
表１に示す配合比率により、ポリカプロラクトン（ＰＣＬ−１）、ポリカーボネート樹脂（ＰＣ）、光拡散剤（ＬＤ−１）及び紫外線吸収剤（ＵＶＡ）をスーパーフローター（カワタ社製）により乾式混合した。次いで、二軸押出機（日本製鋼所社製ＴＥＸ−３０（軸直径＝３０ｍｍφ、Ｌ／Ｄ＝４１））により、２５０〜２９０℃の温度条件にて溶融混練した。得られたペレットを、射出成形機（日本製鋼所社製Ｊ１００Ｅ２Ｐ）を用い、シリンダー設定温度３１０℃の条件にて縦９０ｍｍ、横５０ｍｍ、厚み２ｍｍの平板試験片を作成した。予備乾燥後にペレットが互いに固着することはなく、成形性は何れも良好であった。さらにランプ間輝度、初期着色、耐光性も良好な結果であった。結果を表１に示す。
(Example 1 to Example 6)
Polycaprolactone (PCL-1), polycarbonate resin (PC), light diffusing agent (LD-1), and ultraviolet absorber (UVA) were dry-mixed by a super floater (manufactured by Kawata Corporation) at the blending ratio shown in Table 1. Subsequently, the mixture was melt-kneaded under a temperature condition of 250 to 290 ° C. by a twin screw extruder (TEX-30 manufactured by Nippon Steel Works (shaft diameter = 30 mmφ, L / D = 41)). A flat plate test piece having a length of 90 mm, a width of 50 mm, and a thickness of 2 mm was prepared from the obtained pellets using an injection molding machine (J100E2P manufactured by Nippon Steel Co., Ltd.) at a cylinder setting temperature of 310 ° C. The pellets did not stick to each other after the preliminary drying, and the moldability was good. Furthermore, the brightness between lamps, initial coloring, and light resistance were also good results. The results are shown in Table 1.
（実施例７〜８）
実施例２の紫外線吸収剤をそれぞれ０．０２部又は０．６部に変更する以外は、実施例２と同様の操作を行い、平板試験片を作成した。予備乾燥後にペレットが互いに固着することはなく、成形性、ランプ間輝度、初期着色も良好な結果であった。また、実施例８においては、紫外線吸収剤の添加量に従い、耐光性は、実施例２との比較においてΔＹＩの低下が見られ、目視においても黄味を帯びる変色が改善されていた。結果を表１に示す。
(Examples 7 to 8)
Except changing the ultraviolet absorber of Example 2 to 0.02 part or 0.6 part, respectively, operation similar to Example 2 was performed and the flat test piece was created. The pellets did not stick to each other after the preliminary drying, and the moldability, inter-lamp brightness, and initial coloration were also good results. In Example 8, according to the addition amount of the UV absorber, the light resistance was found to be decreased by ΔYI in comparison with Example 2, and the yellowish discoloration was improved visually. The results are shown in Table 1.
（実施例９〜実施例１０）
ポリカプロラクトンの種類をＰＣＬ−２またはＰＣＬ−３に変更する以外は、実施例２と同様の操作を行い、平板試験片を作成した。予備乾燥後にペレットが互いに固着することはなく、成形性は良好であった。さらにランプ間輝度、初期着色、耐光性も良好な結果であった。結果を表２に示す。
(Example 9 to Example 10)
Except changing the kind of polycaprolactone to PCL-2 or PCL-3, the same operation as Example 2 was performed and the flat test piece was created. The pellets did not stick to each other after the preliminary drying, and the moldability was good. Furthermore, the brightness between lamps, initial coloring, and light resistance were also good results. The results are shown in Table 2.
（実施例１１〜実施例１２）
光拡散剤の種類をＬＤ−２に変更し、その添加量を実施例１１では０．５部に、実施例１２では６部に変更する以外は、実施例２と同様の操作を行い、平板試験片を作成した。予備乾燥後にペレットが互いに固着することはなく、成形性は良好であった。さらにランプ間輝度、初期着色、耐光性も良好な結果であった。結果を表２に示す。
(Example 11 to Example 12)
The same operation as in Example 2 was performed except that the type of light diffusing agent was changed to LD-2, and the addition amount thereof was changed to 0.5 part in Example 11 and 6 parts in Example 12. A test piece was prepared. The pellets did not stick to each other after the preliminary drying, and the moldability was good. Furthermore, the brightness between lamps, initial coloring, and light resistance were also good results. The results are shown in Table 2.
（比較例１〜比較例３）
比較例１ではポリカプロラクトン（ＰＣＬ−１）を配合せずにポリカーボネート樹脂（ＰＣ−１）１００％に、比較例２ではポリカプロラクトン（ＰＣＬ−１）の組成比率を０．０５％に、比較例３ではポリカプロラクトン（ＰＣＬ−１）の組成比率を２０％に変更する以外は、実施例２と同様の操作を行い、平板試験片を作成した。評価結果を表３に示す。
比較例１はポリカプロラクトンを配合しない場合であり、また、比較例２はポリカプロラクトンの組成比率が本発明の構成要件よりも少ない場合である。両方とも成形性、初期着色、耐光性は良好であったが、ランプ間輝度に劣っていた。
比較例３は、ポリカプロラクトンの組成比率が本発明の構成要件よりも多い場合であり、ランプ間輝度、初期着色、耐光性は良好であったが、成形性に劣っていた。
(Comparative Examples 1 to 3)
In Comparative Example 1, the composition ratio of Polycaprolactone (PCL-1) was set to 0.05% without adding polycaprolactone (PCL-1) to Polycarbonate resin (PC-1) 100%. In Comparative Example 2, the composition ratio was set to 0.05%. In No. 3, a plate test piece was prepared by performing the same operation as in Example 2 except that the composition ratio of polycaprolactone (PCL-1) was changed to 20%. The evaluation results are shown in Table 3.
Comparative Example 1 is a case where no polycaprolactone is blended, and Comparative Example 2 is a case where the composition ratio of polycaprolactone is smaller than the constituent requirements of the present invention. In both cases, the moldability, initial coloration, and light resistance were good, but the inter-lamp brightness was poor.
Comparative Example 3 is a case where the composition ratio of polycaprolactone is larger than the constituent requirements of the present invention, and the inter-lamp luminance, initial coloration, and light resistance were good, but the moldability was poor.
（比較例４〜比較例５）
比較例４では光拡散剤としてＬＤ−１を０．０５部に、比較例５では光拡散剤としてＬＤ−２を１５部に変更する以外は、実施例２と同様の操作を行い、平板試験片を作成した。評価結果を表３に示す。
比較例４は光拡散剤の配合量が本発明の構成要件よりも少ない場合であり、また比較例５は光拡散剤の配合量が本発明の構成要件よりも多い場合であるが、両者ともに成形性、初期着色、耐光性は良好であったが、ランプ間輝度に劣っていた。
(Comparative Example 4 to Comparative Example 5)
In Comparative Example 4, the same operation as in Example 2 was carried out except that LD-1 was changed to 0.05 part as a light diffusing agent, and LD-2 was changed to 15 parts as a light diffusing agent in Comparative Example 5. Created a piece. The evaluation results are shown in Table 3.
Comparative Example 4 is a case where the blending amount of the light diffusing agent is less than the constituent requirements of the present invention, and Comparative Example 5 is a case where the blending amount of the light diffusing agent is greater than the constituent requirements of the present invention. The moldability, initial coloring, and light resistance were good, but the brightness between the lamps was poor.
（比較例６〜比較例７）
比較例６では紫外線吸収剤を配合せず、比較例７では紫外線吸収剤の組成比率を１部に変更する以外は、実施例２と同様の操作を行い、平板試験片を作成した。評価結果を表３に示す。
比較例７は紫外線吸収剤の配合量が本発明の構成要件よりも多い場合であり、成形性、ランプ間輝度、初期着色は良好であったが、耐光性に劣っていた。また比較例７は光拡散剤の配合量が本発明の構成要件よりも多い場合であるが、成形性、ランプ間輝度、耐光性は良好であったが、初期着色が規定を超えていた。
(Comparative Example 6 to Comparative Example 7)
In Comparative Example 6, an ultraviolet absorber was not blended, and in Comparative Example 7, the same operation as in Example 2 was performed except that the composition ratio of the ultraviolet absorber was changed to 1 part, and a flat test piece was prepared. The evaluation results are shown in Table 3.
Comparative Example 7 was a case where the blending amount of the ultraviolet absorber was larger than the constituent requirements of the present invention, and the moldability, inter-lamp brightness, and initial coloration were good, but the light resistance was poor. Comparative Example 7 was a case where the blending amount of the light diffusing agent was larger than the constituent requirements of the present invention, but the moldability, inter-lamp brightness, and light resistance were good, but the initial coloration exceeded the specification.
Ａ：輝度計
Ｂ：ランプの光線
Ｃ：光拡散板
Ｄ：ランプ（冷陰極管）
A: Luminance meter B: Light beam C: Light diffusion plate D: Lamp (cold cathode tube)
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| JP5088926B2 (en) | 2006-08-25 | 2012-12-05 | 住化スタイロンポリカーボネート株式会社 | Light diffusing polycarbonate resin composition excellent in flame retardancy and light diffusing plate comprising the same |
| PL2155807T3 (en) | 2007-06-12 | 2011-10-31 | Styron Europe Gmbh | Clear and flame retardant polycarbonate resin film |
| WO2009001476A1 (en) * | 2007-06-28 | 2008-12-31 | Sumitomo Dow Limited | Light diffusing thermoplastic resin composition and light diffusion sheet thereof |
| DE102008043719A1 (en) * | 2008-11-13 | 2010-05-20 | Evonik Röhm Gmbh | Molding compounds for the production of solar cell modules |
| JP2010138212A (en) * | 2008-12-09 | 2010-06-24 | Sumitomo Dow Ltd | Light-diffusing polycarbonate resin composition and light-diffusing plate obtained therefrom |
| CN112126203B (en) * | 2020-09-27 | 2022-02-15 | 江南大学 | Rapid crystallization polyester material and preparation method and application thereof |
| CN113512263A (en) * | 2021-05-20 | 2021-10-19 | 深圳市圆能科技有限公司 | Crystal lamp tube and crystal landscape lamp comprising same |
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