JP5058148B2 - Antistatic polycarbonate resin composition - Google Patents
Antistatic polycarbonate resin composition Download PDFInfo
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- JP5058148B2 JP5058148B2 JP2008332380A JP2008332380A JP5058148B2 JP 5058148 B2 JP5058148 B2 JP 5058148B2 JP 2008332380 A JP2008332380 A JP 2008332380A JP 2008332380 A JP2008332380 A JP 2008332380A JP 5058148 B2 JP5058148 B2 JP 5058148B2
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- polycarbonate resin
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- 229920005668 polycarbonate resin Polymers 0.000 title claims description 44
- 239000004431 polycarbonate resin Substances 0.000 title claims description 44
- 239000000203 mixture Substances 0.000 title claims description 23
- -1 diglycerin fatty acid ester Chemical class 0.000 claims description 28
- 229940105990 diglycerin Drugs 0.000 claims description 22
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 20
- 239000000194 fatty acid Substances 0.000 claims description 20
- 229930195729 fatty acid Natural products 0.000 claims description 20
- 239000003963 antioxidant agent Substances 0.000 claims description 17
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 230000002378 acidificating effect Effects 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 7
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 claims description 7
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 6
- 150000004665 fatty acids Chemical class 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- AESQDCMZHBUWPN-UHFFFAOYSA-N 4h-1,3,2-dioxaphosphinine Chemical compound C1OPOC=C1 AESQDCMZHBUWPN-UHFFFAOYSA-N 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 claims description 2
- 239000002216 antistatic agent Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000013329 compounding Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 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 5
- 150000001875 compounds Chemical class 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 description 3
- 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 3
- 229930185605 Bisphenol Natural products 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N pentadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- MSXXDBCLAKQJQT-UHFFFAOYSA-N 2-tert-butyl-6-methyl-4-[3-(2,4,8,10-tetratert-butylbenzo[d][1,3,2]benzodioxaphosphepin-6-yl)oxypropyl]phenol Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCCOP2OC3=C(C=C(C=C3C=3C=C(C=C(C=3O2)C(C)(C)C)C(C)(C)C)C(C)(C)C)C(C)(C)C)=C1 MSXXDBCLAKQJQT-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-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
- 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
- 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
- 229910052799 carbon Inorganic materials 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- KEMQGTRYUADPNZ-UHFFFAOYSA-N heptadecanoic acid Chemical compound CCCCCCCCCCCCCCCCC(O)=O KEMQGTRYUADPNZ-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 125000005027 hydroxyaryl group Chemical group 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 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
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-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
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- DUUKZBGYNMHUHO-UHFFFAOYSA-N 253MC0P0YV Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)COCC(O)CO DUUKZBGYNMHUHO-UHFFFAOYSA-N 0.000 description 1
- 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 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
- 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
- HTVITOHKHWFJKO-UHFFFAOYSA-N Bisphenol B Chemical compound C=1C=C(O)C=CC=1C(C)(CC)C1=CC=C(O)C=C1 HTVITOHKHWFJKO-UHFFFAOYSA-N 0.000 description 1
- SDDLEVPIDBLVHC-UHFFFAOYSA-N Bisphenol Z Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)CCCCC1 SDDLEVPIDBLVHC-UHFFFAOYSA-N 0.000 description 1
- GGCDQHOMAXJOTJ-UHFFFAOYSA-N CCCCCCCCCCCCCC(=O)OCC(O)COCC(O)CO Chemical compound CCCCCCCCCCCCCC(=O)OCC(O)COCC(O)CO GGCDQHOMAXJOTJ-UHFFFAOYSA-N 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000004790 diaryl sulfoxides Chemical class 0.000 description 1
- 150000001987 diarylethers Chemical class 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 description 1
- 229960001553 phloroglucinol Drugs 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、熱安定性、耐衝撃性および透明性に優れた帯電防止性ポリカーボネート樹脂組成物に関する。更に詳しくは、帯電防止剤によるポリカーボネート樹脂の分解に起因する分子量低下を防止し、耐衝撃性能等を改良すると共に、透明性にも優れた帯電防止性ポリカーボネート樹脂組成物に関する。 The present invention relates to an antistatic polycarbonate resin composition excellent in thermal stability, impact resistance and transparency. More specifically, the present invention relates to an antistatic polycarbonate resin composition that prevents a decrease in molecular weight due to decomposition of a polycarbonate resin by an antistatic agent, improves impact resistance, and has excellent transparency.
ポリカーボネート樹脂は、耐衝撃性、耐熱性、透明性に優れており、電気/電子、光学、建材、医療、食品、車両等の分野において幅広く使用されている。しかしながら、ポリカーボネート樹脂から得られた製品は静電気を帯び易く、静電気に伴う障害として、包装材料や成形品への埃の付着、成形時や使用時の電撃、OA機の誤作動などの問題があり、従来から様々な帯電防止剤の配合が検討されてきた。
また、光ディスクのカートリッジ等の事務機器外装部品では、帯電防止性能と同時に内部の様子が十分に視認できるよう透明性も併せて求められていた。
Polycarbonate resins are excellent in impact resistance, heat resistance, and transparency, and are widely used in fields such as electrical / electronic, optical, building materials, medical, food, and vehicles. However, products obtained from polycarbonate resin are easily charged with static electricity, and there are problems associated with static electricity, such as adhesion of dust to packaging materials and molded products, electric shock during molding and use, and malfunction of OA machines. Conventionally, various formulations of antistatic agents have been studied.
Further, office equipment exterior parts such as optical disk cartridges are also required to have transparency so that the inside can be fully visually recognized simultaneously with the antistatic performance.
ポリカーボネート樹脂に帯電防止性能を付与するために帯電防止剤として、脂肪酸モノグリセリドを配合することが行われている。(特許文献1)しかしながら、この組成物は帯電防止性能、透明性、熱安定性のすべてを充分に満足しうるものではなかった。 In order to impart antistatic performance to the polycarbonate resin, a fatty acid monoglyceride is blended as an antistatic agent. (Patent Document 1) However, this composition cannot satisfy all of the antistatic performance, transparency and thermal stability.
また、ポリカーボネート樹脂にジグリセリン脂肪酸エステルと酸化防止剤を配合することが行われている。(特許文献2)この組成物は帯電防止性能、透明性をある程度改良するものの、熱安定性に劣るという問題があった。とりわけ、この組成物のペレットを得る際の溶融混錬加工や得られたペレットの成形加工において熱がかかることから、ジグリセリン脂肪酸エステルとポリカーボネート樹脂との間で反応が起こり、その結果ポリカーボネート樹脂の分解を促進させ、分子量の低下やポリカーボネート樹脂の本来有する耐衝撃性を著しく低下させるという問題があった。特許文献2においては平均分子量25000という比較的高い分子量を有するポリカーボネート樹脂の例が開示されているが、一般に射出成形の用途で用いられるポリカーボネート樹脂の分子量はもっと低いもの(粘度平均分子量17000〜21000)が使用されることから、特許文献2はこの耐衝撃性の低下の面で実用上、根本的な問題を有していた。 In addition, a diglycerin fatty acid ester and an antioxidant are blended in a polycarbonate resin. (Patent Document 2) Although this composition improves antistatic performance and transparency to some extent, there is a problem that it is inferior in thermal stability. In particular, since heat is applied in the melt-kneading process for obtaining pellets of this composition and the molding process of the obtained pellets, a reaction occurs between the diglycerin fatty acid ester and the polycarbonate resin. There is a problem that the decomposition is promoted, the molecular weight is lowered, and the impact resistance inherent to the polycarbonate resin is remarkably lowered. Patent Document 2 discloses an example of a polycarbonate resin having a relatively high molecular weight of 25000 average molecular weight, but the polycarbonate resin generally used for injection molding has a lower molecular weight (viscosity average molecular weight of 17000 to 21000). Therefore, Patent Document 2 has a fundamental problem in practical use in terms of the reduction in impact resistance.
本発明は、前述のようなジグリセリン脂肪酸エステルを帯電防止剤として用いた際のポリカーボネート樹脂の熱安定性、分子量および耐衝撃性の低下を防止すると共に、優れた透明性を有する帯電防止性ポリカーボネート樹脂組成物を提供することを目的とする。 The present invention prevents the deterioration of the thermal stability, molecular weight and impact resistance of a polycarbonate resin when the above-mentioned diglycerin fatty acid ester is used as an antistatic agent, and has an excellent antistatic polycarbonate. It aims at providing a resin composition.
本発明者は、前述の問題点に鑑み鋭意研究した結果、ポリカーボネート樹脂に対し、ジグリセリン脂肪酸エステルと酸性物質を併用して配合することにより、ポリカーボネート樹脂の熱安定性、分子量および耐衝撃性の低下が著しく防止でき、さらにリン系酸化防止剤を配合することで透明性にも優れた帯電防止性ポリカーボネート樹脂組成物を得ることができることを見出し、本発明を完成するに至った。 As a result of diligent research in view of the above-mentioned problems, the present inventor has formulated a polycarbonate resin with a combination of a diglycerin fatty acid ester and an acidic substance, thereby improving the thermal stability, molecular weight, and impact resistance of the polycarbonate resin. The inventors have found that an antistatic polycarbonate resin composition having excellent transparency can be obtained by adding a phosphorus-based antioxidant, and the present invention has been completed.
すなわち、本発明は、ポリカーボネート樹脂(A)100重量部、ジグリセリン脂肪酸エステル(B)0.1〜5重量部、酸性物質(C)0.0001〜0.01重量部およびリン系酸化防止剤(D)0.005〜1重量部からなることを特徴とする帯電防止性ポリカーボネート樹脂組成物およびそれからなる成形品に関する。 That is, the present invention comprises 100 parts by weight of a polycarbonate resin (A), 0.1 to 5 parts by weight of a diglycerin fatty acid ester (B), 0.0001 to 0.01 parts by weight of an acidic substance (C) and a phosphorus-based antioxidant. (D) The present invention relates to an antistatic polycarbonate resin composition characterized by comprising 0.005 to 1 part by weight and a molded product comprising the same.
本発明の帯電防止性ポリカーボネート樹脂組成物は帯電防止性のみならず透明性および外観ならびに耐衝撃性に優れており、透明で且つ埃の付着が敬遠される用途、例えば光源周辺部材や中身の確認できる成形品などに好適に用いられる。 The antistatic polycarbonate resin composition of the present invention is excellent not only in antistatic properties but also in transparency, appearance and impact resistance, and is transparent and used in applications where dust adhesion is avoided, such as confirmation of light source peripheral members and contents It is suitably used for molded products that can be used.
本発明に使用されるポリカーボネート樹脂(A)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)から製造された芳香族ポリカーボネート樹脂が挙げられる。 The polycarbonate resin (A) used in the present invention is a phosgene method in which various dihydroxydiaryl compounds and phosgene are reacted or a transesterification method obtained by reacting a dihydroxydiaryl compound and a carbonate such as diphenyl carbonate. A typical example is an aromatic 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。 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.
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。 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]−プロパン等が挙げられる。 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(A)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17000〜21000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 (A) is usually 10,000 to 100,000, preferably 15,000 to 35,000, and more preferably 17,000 to 21,000. In producing such a polycarbonate resin, a molecular weight regulator, a catalyst and the like can be used as necessary.
本発明で使用されるジグリセリン脂肪酸エステル(B)は、グリセリンを重合したジリグリセリンと脂肪酸とのエステル化により得ることができる。 The diglycerin fatty acid ester (B) used in the present invention can be obtained by esterification of diglycerin obtained by polymerizing glycerin and a fatty acid.
ジグリセリン脂肪酸エステル(B)としては、炭素数10〜18の脂肪酸とジグリセリンのエステル化合物が好適に使用される。炭素数10未満では帯電防止性能の持続性が劣る場合があり、また炭素数が18を超えると帯電防止性が劣る場合がある。 As the diglycerin fatty acid ester (B), an ester compound of a fatty acid having 10 to 18 carbon atoms and diglycerin is preferably used. If the carbon number is less than 10, the sustainability of the antistatic performance may be inferior, and if the carbon number exceeds 18, the antistatic property may be inferior.
炭素数10〜18の脂肪酸としては、カプリン酸、ラウリン酸、ミリスチン酸、ペンタデシル酸、パルミチン酸、マルガリン酸、ステアリン酸が挙げられる Examples of the fatty acid having 10 to 18 carbon atoms include capric acid, lauric acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, and stearic acid.
ジグリセリン脂肪酸エステル(B)の具体例としては、ジグリセリンモノラウレート、ジグリセリンモノミリステート、ジグリセリンモノステアレートなどが挙げられるが、好適にはジグリセリンモノラウレートが用いられる。 Specific examples of the diglycerin fatty acid ester (B) include diglycerin monolaurate, diglycerin monomyristate, and diglycerin monostearate. Diglycerin monolaurate is preferably used.
本発明のジグリセリン脂肪酸エステル(B)の配合量は、ポリカーボネート樹脂(A)100重量部あたり、0.1〜5重量部である。配合量が0.1重量部未満では帯電防止性に劣り、また5重量部を超えると透明性及び外観が低下するので好ましくない。より好ましくは、0.5〜3重量部の範囲である。 The compounding amount of the diglycerin fatty acid ester (B) of the present invention is 0.1 to 5 parts by weight per 100 parts by weight of the polycarbonate resin (A). If the blending amount is less than 0.1 parts by weight, the antistatic property is inferior, and if it exceeds 5 parts by weight, the transparency and the appearance are deteriorated. More preferably, it is the range of 0.5-3 weight part.
本発明にて使用される酸性物質(C)としては、リン酸、硼酸等の化合物があげられ、とりわけ不揮発性の弱酸であるリン酸が好適に用いられる。 Examples of the acidic substance (C) used in the present invention include compounds such as phosphoric acid and boric acid. In particular, phosphoric acid which is a nonvolatile weak acid is preferably used.
酸性物質(C)の配合量としては、ポリカーボネート樹脂(A)100重量部当たり、0.0001〜0.01重量部である。配合量が0.0001重量部未満または0.01重量部を超えると熱安定性および耐衝撃性に劣るので好ましくない。より好ましくは、0.001〜0.005重量部の範囲である。 The compounding amount of the acidic substance (C) is 0.0001 to 0.01 part by weight per 100 parts by weight of the polycarbonate resin (A). If the blending amount is less than 0.0001 part by weight or more than 0.01 part by weight, the thermal stability and impact resistance are inferior. More preferably, it is the range of 0.001-0.005 weight part.
本発明にて使用されるリン系酸化防止剤(D)としては、下記一般式(1)〜(3)で表わされる化合物、環状亜リン酸エステル系酸化防止剤のうち少なくとも1種からなるものが挙げられる。とりわけ、環状亜リン酸エステル系酸化防止剤が好適に使用される。
一般式(1)
As phosphorus antioxidant (D) used by this invention, what consists of at least 1 sort (s) among the compound represented by following General formula (1)-(3), and cyclic phosphite-type antioxidant Is mentioned. In particular, a cyclic phosphite antioxidant is preferably used.
General formula (1)
一般式(1)において、R1〜4は炭素数1〜20のアルキル基またはアリール基を示す。また、R1〜R4はそれぞれが同一であっても異なっていてもよい。
R1〜R4で表される置換基の好適な例としては、2,4−ジ−tert−ブチルフェニルが挙げられる。
In General formula (1), R1-4 shows a C1-C20 alkyl group or an aryl group. R1 to R4 may be the same or different.
Preferable examples of the substituent represented by R1 to R4 include 2,4-di-tert-butylphenyl.
一般式(2) General formula (2)
一般式(2)において、R5およびR6は炭素数1〜20のアルキル基またはアリール基を示す。また、R5およびR6はそれぞれが同一であっても異なっていてもよい。
R5およびR6で表される置換基の好適な例としては、2,4−ジ−tert−ブチルフェニルが挙げられる。
In General formula (2), R5 and R6 represent a C1-C20 alkyl group or an aryl group. R5 and R6 may be the same or different.
Preferable examples of the substituents represented by R5 and R6 include 2,4-di-tert-butylphenyl.
一般式(3) General formula (3)
一般式(3)において、Arは炭素数1〜20のアルキル基で置換されてもよいアリール基を示す。また、Arはそれぞれが同一であっても異なっていてもよい。
Arで表される置換基の好適な例としては、2,4−ジ−tert−ブチルフェニルが挙げられる。
In General formula (3), Ar shows the aryl group which may be substituted by a C1-C20 alkyl group. Ar may be the same or different.
Preferable examples of the substituent represented by Ar include 2,4-di-tert-butylphenyl.
環状亜リン酸エステル系酸化防止剤としては、フェノール類又はビスフェノール類と三ハロゲン化リンとアミン化合物とを反応させることにより製造されるものが挙げられる。反応方法としては通常、先ずフェノール類又はビスフェノール類と三ハロゲン化リンとを反応させ中間体を生成し、次いでアミン化合物を反応させるという二段反応法が採用される。反応は通常、有機溶剤中で0〜200℃の環境下で行われる。環状亜リン酸エステル系酸化防止剤のうち、特に2,4,8,10−テトラ−t−ブチル−6−[3−(3−メチル−4ヒドロキシ−5−t−ブチルフェニル)プロポキシ]ジベンゾ[d,f][1,3,2]ジオキサホスフェピンが好適であり、市販品として入手可能で住友化学社製スミライザーGPが挙げられる。 Examples of the cyclic phosphite antioxidant include those produced by reacting phenols or bisphenols, phosphorus trihalide and an amine compound. As a reaction method, a two-step reaction method is generally employed in which phenols or bisphenols and phosphorus trihalide are first reacted to form an intermediate, and then an amine compound is reacted. The reaction is usually performed in an organic solvent in an environment of 0 to 200 ° C. Of the cyclic phosphite antioxidants, 2,4,8,10-tetra-t-butyl-6- [3- (3-methyl-4hydroxy-5-t-butylphenyl) propoxy] dibenzo is particularly useful. [D, f] [1,3,2] dioxaphosphine is suitable, and is available as a commercial product, and Sumitomo Chemical's Sumilizer GP can be mentioned.
リン系酸化防止剤(D)の配合量としては、ポリカーボネート樹脂(A)100重量部あたり0.005〜1重量部である。配合量が0.005重量部未満では熱安定性が劣るので好ましくない。また1重量部を超えると光線透過率が低下するので好ましくない。この配合量は、好ましくは、0.01〜0.5重量部、より好ましくは0.02〜1重量部の範囲である。 As a compounding quantity of phosphorus antioxidant (D), it is 0.005-1 weight part per 100 weight part of polycarbonate resin (A). If the blending amount is less than 0.005 parts by weight, the thermal stability is poor, which is not preferable. On the other hand, when the amount exceeds 1 part by weight, the light transmittance decreases, which is not preferable. This amount is preferably in the range of 0.01 to 0.5 parts by weight, more preferably 0.02 to 1 parts by weight.
本発明の帯電防止性ポリカーボネート樹脂組成物は、本発明の効果を損なわない限り、他の帯電防止剤を併用することができる。併用することができる他の帯電防止剤としては、広く公知のものを使用することができ、例えば、アルキルスルホン酸塩、アルキルベンゼンスルホン酸塩、アンモニウム塩、他のホスホニウム塩等が挙げられるが、これらに限定されるものではない。 The antistatic polycarbonate resin composition of the present invention can be used in combination with other antistatic agents as long as the effects of the present invention are not impaired. As other antistatic agents that can be used in combination, widely known ones can be used, and examples thereof include alkylsulfonates, alkylbenzenesulfonates, ammonium salts, and other phosphonium salts. It is not limited to.
ポリカーボネート樹脂(A)、ジグリセリン脂肪酸エステル(B)、酸性物質(C)およびリン系酸化防止剤(D)の混合方法ならびに混合順序には特に制限はなく、公知の混合機、例えば、タンブラー、リボンブレンダー、高速ミキサー等により混合し、その後一軸もしくは二軸押出機により溶融混練して行うことができる。 The mixing method and mixing order of the polycarbonate resin (A), diglycerin fatty acid ester (B), acidic substance (C) and phosphorus antioxidant (D) are not particularly limited, and known mixers such as tumblers, It can be carried out by mixing with a ribbon blender, a high-speed mixer or the like and then melt-kneading with a single-screw or twin-screw extruder.
さらに、必要に応じて本発明の効果を損なわない範囲で、公知の添加剤、例えば、熱安定剤、離型剤、紫外線吸収剤、難燃剤、染顔料等の添加剤を配合しても良い。 Furthermore, a known additive such as a heat stabilizer, a release agent, an ultraviolet absorber, a flame retardant, and a dye / pigment may be blended as necessary within a range not impairing the effects of the present invention. .
以下に、本発明を実施例により具体的に説明するが、本発明はそれら実施例に制限されるものではない。尚、「部」は断りの無い限り、重量基準に基づく。 EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. “Parts” are based on weight unless otherwise specified.
表1および2に示す配合成分、配合量に基づき、タンブラーを用いて各種配合成分を混合し二軸押出機(日本製鋼所製TEX−30α)を用いて、シリンダー温度250℃にて溶融混練し、各種ペレットを得た。 Based on the blending components and blending amounts shown in Tables 1 and 2, various blending components were mixed using a tumbler and melt kneaded at a cylinder temperature of 250 ° C. using a twin screw extruder (TEX-30α manufactured by Nippon Steel). Various pellets were obtained.
使用した配合成分は、それぞれ次のとおりである。
1.ポリカーボネート樹脂:
住友ダウ社製カリバー200−20
(粘度平均分子量:19000、以下PCと略記)
2.ジグリセリン脂肪酸エステル:
ジグリセリンモノラウレート
(理研ビタミン社製ポエムDL−100、以下帯電防止剤と略記)
3.酸性物質:
リン酸
(ナカライテスク社製、以下酸性物質と略記)
4.リン系酸化防止剤:
環状亜りん酸エステル系酸化防止剤
(住友化学社製スミライザーGP、以下AOと略記)
2,4,8,10−テトラ−t−ブチル−6−[3−(3−メチル−4ヒドロ
キシ−5−t−ブチルフェニル)プロポキシ]ジベンゾ[d,f][1,3,2]
ジオキサホスフェピン
The compounding components used are as follows.
1. Polycarbonate resin:
Sumitomo Dow Caliber 200-20
(Viscosity average molecular weight: 19000, hereinafter abbreviated as PC)
2. Diglycerin fatty acid ester:
Diglycerin monolaurate (Poem DL-100 manufactured by Riken Vitamin Co., hereinafter abbreviated as antistatic agent)
3. Acidic substances:
Phosphoric acid (Nacalai Tesque, hereinafter abbreviated as acidic substance)
4). Phosphorous antioxidants:
Cyclic phosphite antioxidant (Sumitomo Chemical Co., Ltd., Sumitizer GP, hereinafter abbreviated as AO)
2,4,8,10-tetra-tert-butyl-6- [3- (3-methyl-4hydroxy-5-tert-butylphenyl) propoxy] dibenzo [d, f] [1,3,2]
Dioxaphosphepine
得られたペレットを用いて、射出成形機(日本製鋼所製J100SAII)を使用し、シリンダーの設定温度300℃にて各種試験片を作成し、それぞれの試験に供した。 Using the obtained pellets, various test pieces were prepared using an injection molding machine (J100SAII manufactured by Nippon Steel Works) at a set temperature of the cylinder of 300 ° C. and subjected to each test.
試験方法は以下のとおりである。
・メルトボリュームレイト(MVR):
ISO 1133に準じて280℃にて測定した。20cm3/10分以下を合格とした。
The test method is as follows.
Melt volume rate (MVR):
Measurement was performed at 280 ° C. according to ISO 1133. It was passed 20cm 3/10 minutes or less.
・表面抵抗率:
70×40×3mmの平板を射出成形にて作成し、以下の条件にて測定を行った。
平板試験片を23℃、55%相対湿度の条件で24時間状態調整した後、高抵抗率計
(三菱化学社製ハイレスターUP MCP−HT450)を使用し、測定電圧
1000V、サンプリング時間30秒の条件で表面固有抵抗率を測定した。
表面抵抗率が1×1014Ω/sq未満を合格とした。
・ Surface resistivity:
A 70 × 40 × 3 mm flat plate was prepared by injection molding and measured under the following conditions.
After the plate test piece was conditioned for 24 hours under the conditions of 23 ° C. and 55% relative humidity, a high resistivity meter (Hirester UP MCP-HT450 manufactured by Mitsubishi Chemical Corporation) was used, and the measurement voltage was 1000 V and the sampling time was 30 seconds. The surface resistivity was measured under the conditions.
A surface resistivity of less than 1 × 10 14 Ω / sq was accepted.
・シャルピー衝撃強度:
23℃における、ノッチ付シャルピー衝撃強度をISO179−2に準拠して測定した。
10kJ/m2以上を合格とした。
・ Charpy impact strength:
The notched Charpy impact strength at 23 ° C. was measured according to ISO 179-2.
10 kJ / m 2 or more was accepted.
・全光線透過率:
ASTM D1003に準拠して測定した。87%以上を合格とした。
・ Total light transmittance:
Measured according to ASTM D1003. More than 87% was accepted.
・ΔYI:
70×40×3mmの平板を射出成形にて成形した後、設定温度340℃のシリンダ
ー内で30分滞留させた後、さらに成形した。滞留前の成形品と滞留後の成形品のイ
エローネスインデックス(YI)をASTM D−1925に準拠して測定した。滞
留前のYIと滞留後のYIとの差をΔYIとし、2以下を合格とした。
ΔYI:
A 70 × 40 × 3 mm flat plate was formed by injection molding, then retained in a cylinder at a set temperature of 340 ° C. for 30 minutes, and further molded. The yellowness index (YI) of the molded product before residence and the molded product after residence was measured in accordance with ASTM D-1925. The difference between YI before retention and YI after residence was ΔYI, and 2 or less was accepted.
試験の結果を表1および2に示す。 The test results are shown in Tables 1 and 2.
実施例1〜6に示すように、本発明の要件を具備したポリカーボネート樹脂組成物は、表面固有抵抗値をはじめとする必要な性能は全て要求されるレベルを満足している。 As shown in Examples 1 to 6, the polycarbonate resin composition having the requirements of the present invention satisfies all required performances including the surface specific resistance value.
一方、本発明の要件を満たさない場合においては、いずれの場合も何らかの欠点を有していた。
比較例1は、酸性物質の配合量が少ない場合で、MVRに劣っていた。
比較例2は、酸性物質の配合量が多い場合で、ΔYIに劣っていた。
比較例3は、AOの配合量が少ない場合で、ΔYI値が要求レベルを満足しなかった。
比較例4は、AOの配合量が多い場合で、光線透過率、ΔYI値が要求レベルを満足しなかった。
比較例5は、帯電防止剤の配合量が少ない場合で、表面抵抗率が要求レベルを満足しなかった。
比較例6は、帯電防止剤の配合量が多い場合で、MVR、シャルピー衝撃強度、ΔYI値、光線透過率が要求レベルを満足しなかった。
On the other hand, in the case where the requirements of the present invention were not satisfied, each case had some drawbacks.
The comparative example 1 was inferior to MVR in the case where there are few compounding quantities of an acidic substance.
Comparative Example 2 was a case where the compounding amount of the acidic substance was large and was inferior to ΔYI.
In Comparative Example 3, the amount of AO was small, and the ΔYI value did not satisfy the required level.
In Comparative Example 4, the amount of AO blended was large, and the light transmittance and ΔYI value did not satisfy the required levels.
In Comparative Example 5, the amount of the antistatic agent was small, and the surface resistivity did not satisfy the required level.
In Comparative Example 6, the amount of the antistatic agent was large, and the MVR, Charpy impact strength, ΔYI value, and light transmittance did not satisfy the required levels.
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