CN115397913A - Styrene resin composition for optical use, light guide plate, and surface light source unit of side light type - Google Patents
Styrene resin composition for optical use, light guide plate, and surface light source unit of side light type Download PDFInfo
- Publication number
- CN115397913A CN115397913A CN202080099327.2A CN202080099327A CN115397913A CN 115397913 A CN115397913 A CN 115397913A CN 202080099327 A CN202080099327 A CN 202080099327A CN 115397913 A CN115397913 A CN 115397913A
- Authority
- CN
- China
- Prior art keywords
- styrene resin
- antioxidant
- resin composition
- phosphorus
- butyl
- 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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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 216
- 239000011342 resin composition Substances 0.000 title claims abstract description 52
- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 64
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 64
- 239000011347 resin Substances 0.000 claims abstract description 54
- 229920005989 resin Polymers 0.000 claims abstract description 54
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 32
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 30
- 239000011574 phosphorus Substances 0.000 claims abstract description 30
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000178 monomer Substances 0.000 claims abstract description 19
- XAVGNEJDRLVNOO-UHFFFAOYSA-N [P].OC1=CC=CC=C1 Chemical compound [P].OC1=CC=CC=C1 XAVGNEJDRLVNOO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001577 copolymer Polymers 0.000 claims abstract description 6
- -1 3, 5-di-t-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 18
- 238000002834 transmittance Methods 0.000 claims description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 239000011593 sulfur Substances 0.000 claims description 10
- OPLCSTZDXXUYDU-UHFFFAOYSA-N 2,4-dimethyl-6-tert-butylphenol Chemical compound CC1=CC(C)=C(O)C(C(C)(C)C)=C1 OPLCSTZDXXUYDU-UHFFFAOYSA-N 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 239000002530 phenolic antioxidant Substances 0.000 claims description 6
- SSADPHQCUURWSW-UHFFFAOYSA-N 3,9-bis(2,6-ditert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C)=CC(C(C)(C)C)=C1OP1OCC2(COP(OC=3C(=CC(C)=CC=3C(C)(C)C)C(C)(C)C)OC2)CO1 SSADPHQCUURWSW-UHFFFAOYSA-N 0.000 claims description 5
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 5
- CGRTZESQZZGAAU-UHFFFAOYSA-N [2-[3-[1-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]-2-methylpropan-2-yl]-2,4,8,10-tetraoxaspiro[5.5]undecan-9-yl]-2-methylpropyl] 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCC(C)(C)C2OCC3(CO2)COC(OC3)C(C)(C)COC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 CGRTZESQZZGAAU-UHFFFAOYSA-N 0.000 claims description 5
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 5
- ZEFSGHVBJCEKAZ-UHFFFAOYSA-N bis(2,4-ditert-butyl-6-methylphenyl) ethyl phosphite Chemical compound CC=1C=C(C(C)(C)C)C=C(C(C)(C)C)C=1OP(OCC)OC1=C(C)C=C(C(C)(C)C)C=C1C(C)(C)C ZEFSGHVBJCEKAZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 claims description 4
- RRTJOAHJZQVSSE-UHFFFAOYSA-N 1,3,2-dioxaphosphepine Chemical compound C=1C=COPOC=1 RRTJOAHJZQVSSE-UHFFFAOYSA-N 0.000 claims description 3
- DWDXQYZTZCNKAF-UHFFFAOYSA-N 2-[3-(3-tert-butyl-2-hydroxy-5-methylphenyl)propanoylperoxy]ethyl 3-(3-tert-butyl-2-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=CC(C)=CC(CCC(=O)OCCOOC(=O)CCC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O DWDXQYZTZCNKAF-UHFFFAOYSA-N 0.000 claims description 3
- ONOVRUOVXNSEDQ-UHFFFAOYSA-N C(C)(C)(C)C1=CC=C(C(=C1)C(C)(C)C)OC(C(CCCC)CC)O[P] Chemical compound C(C)(C)(C)C1=CC=C(C(=C1)C(C)(C)C)OC(C(CCCC)CC)O[P] ONOVRUOVXNSEDQ-UHFFFAOYSA-N 0.000 claims description 3
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 claims description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 3
- QNEVKCBGTUWWOH-UHFFFAOYSA-N 1,2,3,4-tetrakis(2,4-ditert-butylphenyl)-5-phenylbenzene Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1C(C(=C1C=2C(=CC(=CC=2)C(C)(C)C)C(C)(C)C)C=2C(=CC(=CC=2)C(C)(C)C)C(C)(C)C)=CC(C=2C=CC=CC=2)=C1C1=CC=C(C(C)(C)C)C=C1C(C)(C)C QNEVKCBGTUWWOH-UHFFFAOYSA-N 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 19
- 230000002087 whitening effect Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 16
- 238000006116 polymerization reaction Methods 0.000 description 16
- 238000012360 testing method Methods 0.000 description 15
- JIGUICYYOYEXFS-UHFFFAOYSA-N 3-tert-butylbenzene-1,2-diol Chemical compound CC(C)(C)C1=CC=CC(O)=C1O JIGUICYYOYEXFS-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 4
- 239000003505 polymerization initiator Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 239000012986 chain transfer agent Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000005227 gel permeation chromatography Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 description 2
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- MOYAFQVGZZPNRA-UHFFFAOYSA-N Terpinolene Chemical compound CC(C)=C1CCC(C)=CC1 MOYAFQVGZZPNRA-UHFFFAOYSA-N 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000012662 bulk polymerization Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 2
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 2
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 2
- 150000003566 thiocarboxylic acids Chemical class 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 description 1
- ZUDLIFVTNPYZJH-UHFFFAOYSA-N 1,1,2,2-tetraphenylethylbenzene Chemical compound C1=CC=CC=C1C(C(C=1C=CC=CC=1)(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 ZUDLIFVTNPYZJH-UHFFFAOYSA-N 0.000 description 1
- IMYCVFRTNVMHAD-UHFFFAOYSA-N 1,1-bis(2-methylbutan-2-ylperoxy)cyclohexane Chemical compound CCC(C)(C)OOC1(OOC(C)(C)CC)CCCCC1 IMYCVFRTNVMHAD-UHFFFAOYSA-N 0.000 description 1
- HSLFISVKRDQEBY-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)cyclohexane Chemical compound CC(C)(C)OOC1(OOC(C)(C)C)CCCCC1 HSLFISVKRDQEBY-UHFFFAOYSA-N 0.000 description 1
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical compound CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
- QEDJMOONZLUIMC-UHFFFAOYSA-N 1-tert-butyl-4-ethenylbenzene Chemical compound CC(C)(C)C1=CC=C(C=C)C=C1 QEDJMOONZLUIMC-UHFFFAOYSA-N 0.000 description 1
- GOAHRBQLKIZLKG-UHFFFAOYSA-N 1-tert-butylperoxybutane Chemical compound CCCCOOC(C)(C)C GOAHRBQLKIZLKG-UHFFFAOYSA-N 0.000 description 1
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 description 1
- YAQDPWONDFRAHF-UHFFFAOYSA-N 2-methyl-2-(2-methylpentan-2-ylperoxy)pentane Chemical compound CCCC(C)(C)OOC(C)(C)CCC YAQDPWONDFRAHF-UHFFFAOYSA-N 0.000 description 1
- HDCMRFUDMYGBFU-UHFFFAOYSA-N 2-methylbutan-2-yl 7-methyloctaneperoxoate Chemical compound CCC(C)(C)OOC(=O)CCCCCC(C)C HDCMRFUDMYGBFU-UHFFFAOYSA-N 0.000 description 1
- RCEJCSULJQNRQQ-UHFFFAOYSA-N 2-methylbutanenitrile Chemical compound CCC(C)C#N RCEJCSULJQNRQQ-UHFFFAOYSA-N 0.000 description 1
- 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 1
- BQARUDWASOOSRH-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-yl hydrogen carbonate Chemical compound CC(C)(C)OOC(C)(C)OC(O)=O BQARUDWASOOSRH-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 1
- WPMYUUITDBHVQZ-UHFFFAOYSA-M 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=CC(CCC([O-])=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-M 0.000 description 1
- UJTRCPVECIHPBG-UHFFFAOYSA-N 3-cyclohexylpyrrole-2,5-dione Chemical compound O=C1NC(=O)C(C2CCCCC2)=C1 UJTRCPVECIHPBG-UHFFFAOYSA-N 0.000 description 1
- IYMZEPRSPLASMS-UHFFFAOYSA-N 3-phenylpyrrole-2,5-dione Chemical compound O=C1NC(=O)C(C=2C=CC=CC=2)=C1 IYMZEPRSPLASMS-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- IZSHZLKNFQAAKX-UHFFFAOYSA-N 5-cyclopenta-2,4-dien-1-ylcyclopenta-1,3-diene Chemical group C1=CC=CC1C1C=CC=C1 IZSHZLKNFQAAKX-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 206010001557 Albinism Diseases 0.000 description 1
- 229940122361 Bisphosphonate Drugs 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
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- 239000003431 cross linking reagent Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- VBWIZSYFQSOUFQ-UHFFFAOYSA-N cyclohexanecarbonitrile Chemical compound N#CC1CCCCC1 VBWIZSYFQSOUFQ-UHFFFAOYSA-N 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
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- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229940043348 myristyl alcohol Drugs 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 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
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 150000004978 peroxycarbonates Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- FZYCEURIEDTWNS-UHFFFAOYSA-N prop-1-en-2-ylbenzene Chemical compound CC(=C)C1=CC=CC=C1.CC(=C)C1=CC=CC=C1 FZYCEURIEDTWNS-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000012321 sodium triacetoxyborohydride Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229940012831 stearyl alcohol Drugs 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YOEYNURYLFDCEV-UHFFFAOYSA-N tert-butyl hydroxy carbonate Chemical compound CC(C)(C)OC(=O)OO YOEYNURYLFDCEV-UHFFFAOYSA-N 0.000 description 1
- GSECCTDWEGTEBD-UHFFFAOYSA-N tert-butylperoxycyclohexane Chemical compound CC(C)(C)OOC1CCCCC1 GSECCTDWEGTEBD-UHFFFAOYSA-N 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- 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
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
-
- 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
- C08K5/13—Phenols; Phenolates
-
- 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
- C08K5/49—Phosphorus-containing compounds
-
- 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
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/527—Cyclic esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/14—Copolymers of styrene with unsaturated esters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Planar Illumination Modules (AREA)
Abstract
A styrene resin composition for a light guide plate is provided, which satisfies hue, hue stability, extrusion stability, dimensional stability, wet-heat whitening resistance and strength at the same time. According to the present invention, there is provided an optical styrene resin composition comprising a styrene resin (a) and an antioxidant (B), wherein the styrene resin (a) is a copolymer comprising 51 to 99 mass% of styrene monomer units and 1 to 49 mass% of (meth) acrylate monomer units, the antioxidant (B) comprises at least one of a phosphorus antioxidant (B-1), a phenol antioxidant (B-2) and a phosphorus-phenol antioxidant (B-3), and the amount of the phosphorus antioxidant (B-1) and the phosphorus-phenol antioxidant (B-3) is 0.1 to 0.5 parts by mass in total, and the amount of the phenol antioxidant (B-2) and the phosphorus-phenol antioxidant (B-3) is 0.01 to 0.5 parts by mass in total, based on 100 parts by mass of the styrene resin (a).
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to an optical styrene resin composition, a light guide plate and a sidelight type surface light source unit.
[ Prior Art ]
The backlight of the liquid crystal display includes a direct type backlight in which a light source is disposed on the back surface of the display device and a side light type backlight in which a light source is disposed on the side surface. The edge light type backlight uses a light guide plate, and is used for a wide range of applications such as displays of televisions, desktop personal computers, notebook personal computers, cellular phones, and monitors for car navigation, in which light from a light source disposed on a side surface is guided to a full-surface display. Furthermore, a backlight using a light guide plate is also used for lighting or a signboard.
Since the light guide plate has a relatively long light transmission distance and a large light loss at the optical path length, it is required to have a particularly high light transmittance. Therefore, as a material of the light guide plate, an acrylic resin typified by polymethyl methacrylate (PMMA) is used. However, PMMA has high water absorption, and the light guide plate may warp or change its dimension due to water absorption. Further, since pyrolysis is likely to occur during molding, there is a problem that the appearance of a molded article is poor during molding at high temperature. In order to improve these problems, it has been proposed to use a styrene-methyl (meth) acrylate copolymer as a material for a light guide plate (see patent document 1).
On the other hand, although a styrene resin produced from a styrene monomer has excellent low water absorption, it has a problem that a molded product is cloudy due to environmental changes such as temperature and humidity. Specifically, when the molded article is exposed to a room-temperature environment under a high-temperature and high-humidity environment or exposed to a low-temperature environment from the room-temperature environment, moisture uniformly present in the molded article becomes unstable and undergoes phase separation to generate minute defects in the molded article, with the result that white turbidity is generated. In order to solve this problem, a sheet-like molded article made of a styrene resin obtained by copolymerizing a styrene monomer and a small amount of a (meth) acrylate monomer has been proposed (see patent document 2).
[ Prior art documents ]
[ patent document ]
Patent document 1 Japanese patent laid-open No. 2003-075648
Patent document 2 Japanese patent laid-open publication No. 2013-170186
[ summary of the invention ]
[ problem to be solved by the invention ]
However, it is difficult for the styrene resin composition for optical use constituting the light guide plate to satisfy transparency, hue stability, extrusion stability, dimensional stability, wet-heat whitening resistance, and strength at the same time.
The present invention has been made in view of the above problems, and provides a styrene resin composition for a light guide plate, which satisfies hue, hue stability, extrusion stability, dimensional stability, wet heat whitening resistance, and strength at the same time.
[ MEANS FOR SOLVING PROBLEMS ] to solve the problems
According to the present invention, there is provided a styrene resin composition for optical use, comprising a styrene resin (a) and an antioxidant (B), wherein the styrene resin (a) is a copolymer comprising 51 to 99 mass% of styrene monomer units and 1 to 49 mass% of (meth) acrylate monomer units, and the antioxidant (B) comprises at least one of a phosphorus antioxidant (B-1), a phenol antioxidant (B-2) and a phosphorus/phenol antioxidant (B-3), and the styrene resin (a) contains the phosphorus antioxidant (B-1) and the phosphorus/phenol antioxidant (B-3) in a total amount of 0.1 to 0.5 parts by mass, and the phenol antioxidant (B-2) and the phosphorus/phenol antioxidant (B-3) in a total amount of 0.01 to 0.5 parts by mass, based on 100 parts by mass of the styrene resin (a).
The present inventors have conducted extensive studies and found that when the contents of a styrene-based monomer unit and a (meth) acrylate-based monomer unit in a styrene-based resin and the content of an antioxidant are within predetermined ranges, a styrene-based resin composition for optical use can satisfy hue, hue stability, extrusion stability, dimensional stability, wet-heat whitening resistance, and strength at the same time, and thus have completed the present invention. Hereinafter, various embodiments of the present invention will be described by way of examples. The embodiments shown below may be combined with each other.
Preferably, the phosphorus-based antioxidant (B-1) is at least one selected from the group consisting of 2,2 '-methylenebis (4, 6-di-tert-butyl-1-phenoxy) (2-ethylhexyloxy) phosphorus, tris (2, 4-di-tert-butylphenyl) phosphite, 3, 9-bis (2, 6-di-tert-butyl-4-methylphenoxy) -2,4,8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane, tetrakis (2, 4-di-tert-butylphenyl) [1,1 biphenyl ] -4,4' diyl bisphosphonate and ethyl bis (2, 4-di-tert-butyl-6-methylphenyl) phosphite.
Preferably, the phenolic antioxidant (B-2) is at least one selected from the group consisting of octadecyl-3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, ethylbis (oxyethylene) bis [3- (5-t-butyl-4-hydroxy-m-tolyl) propionate ], pentaerythrityl tetrakis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], 3, 9-bis [2- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] -1, 1-dimethylethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane.
Preferably, the above-mentioned phosphorous phenol antioxidant (B-3) is 6- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propoxy ] -2,4,8, 10-tetra-tert-butyldibenzo [ d, f ] [1,3,2] dioxaphosphepin. Preferably, the styrene resin composition for optical use comprises 0.1 to 20ppm of 6-tert-butyl-2, 4-xylenol.
Preferably, the optical styrene resin composition comprises 0.1 to 500ppm of sulfur.
Preferably, the styrene resin composition for optical use is one wherein the weight average molecular weight (Mw) of the styrene resin (a) is 5 to 40 ten thousand, and the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the styrene resin (a) is 1.0 to 3.0.
Preferably, the styrene resin composition for optical use has an average transmittance of 85% or more at a wavelength of 380 to 780nm, wherein the average transmittance is 115mm in the initial optical path length.
According to another aspect of the present invention, there is provided a light guide plate obtained by molding the above styrene resin composition for optical use.
Preferably, the light guide plate has a thickness of 1.0 to 3.0mm.
According to another aspect of the present invention, there is provided a side-light type surface light source unit having the light guide plate and a light source that supplies light to an end face of the light guide plate.
[ detailed description ] embodiments
Hereinafter, embodiments of the present invention will be described. Various feature items shown in the embodiments shown below can be combined with each other. The present invention is implemented independently for each feature.
1. Styrene resin composition
A styrene resin composition according to an embodiment of the present invention is an optical styrene resin composition containing a styrene resin (a) and an antioxidant (B).
< styrene resin (A) >
The styrene resin (a) is obtained by copolymerizing monomers including a styrene monomer and a (meth) acrylate monomer. The styrene resin (a) is a copolymer comprising 51 to 99 mass% of styrene monomer units and 1 to 49 mass% of (meth) acrylate monomer units, preferably 51 to 85 mass% of styrene monomer units and 15 to 49 mass% of (meth) acrylate monomer units, and more preferably 80 to 85 mass% of styrene monomer units and 15 to 20 mass% of (meth) acrylate monomer units. When the content falls within such a range, transparency, hue stability, extrusion stability, dimensional stability, wet-heat whitening resistance, and strength can be simultaneously satisfied. In particular, a light guide plate with less wet heat whitening can be obtained by setting the styrene monomer to 99 mass% or less, and a light guide plate with excellent dimensional stability can be obtained by setting the styrene monomer to 51 mass% or more. The content of the (meth) acrylate monomer units in the styrene resin (a) is specifically 1,5,10,15,16,17,18,19,20,25,30,35,40,45,50 mass%, and may be in the range of 2 arbitrary values among the values exemplified here.
Examples of the styrene monomer include styrene, α -methylstyrene, o-methylstyrene, p-methylstyrene, m-methylstyrene, ethylstyrene, p-tert-butylstyrene and the like. These may be used alone or in combination of two or more. The styrenic monomer is preferably styrene.
Examples of the (meth) acrylate monomer include alkyl (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, isoamyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and lauryl (meth) acrylate; aryl (meth) acrylates such as phenyl (meth) acrylate and benzyl (meth) acrylate; cycloalkyl (meth) acrylates such as cyclohexyl (meth) acrylate, 4-t-butylcyclohexyl (meth) acrylate, tricyclodecanyl (meth) acrylate, and adamantyl (meth) acrylate; glycidyl (meth) acrylate; dicyclopentadienyl (meth) acrylate, and the like. These may be used alone or in combination of two or more. The (meth) acrylate-based monomer is preferably an alkyl (meth) acrylate, and more preferably methyl methacrylate.
The styrene resin (a) may be a copolymer obtained by copolymerizing a styrene monomer and a (meth) acrylate monomer. Examples of the copolymerizable monomer include (meth) acrylic acid such as acrylic acid and methacrylic acid; vinyl cyanide such as acrylonitrile and methacrylonitrile; α, β -ethylenically unsaturated carboxylic acids such as maleic anhydride and fumaric acid, and imides such as phenylmaleimide and cyclohexylmaleimide. These monomers may be used singly or in combination.
The weight average molecular weight (Mw) of the styrene resin (a) is preferably 5 to 40 ten thousand, and more preferably 10 to 14 ten thousand. The ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the styrene resin (a) is preferably 1.0 to 3.0, more preferably 1.5 to 2.5. When the thickness is within such a range, both moldability and strength of the light guide plate can be achieved. When the weight average molecular weight (Mw) is less than 5 ten thousand, the strength of the molded article may be insufficient, and when it exceeds 40 ten thousand, the moldability may be deteriorated. When the ratio (Mw/Mn) of the number average molecular weights (Mn) is less than 1.0, moldability may be deteriorated, and when it exceeds 3.0, strength of the molded article may be deteriorated.
< antioxidant (B) >
The antioxidant (B) includes at least one of a phosphorus antioxidant (B-1), a phenol antioxidant (B-2) and a phosphorus/phenol antioxidant (B-3).
The styrene resin composition for optical use contains 0.1 to 0.5 parts by mass of a phosphorus antioxidant (B-1) and a phosphorus/phenol antioxidant (B-3) in total relative to 100 parts by mass of the styrene resin (A). When the amount is within this range, transparency, hue stability, extrusion stability, dimensional stability, wet-heat-whitening resistance, and strength can be simultaneously satisfied. The total content of the phosphorus antioxidant (B-1) and the phosphorus/phenol antioxidant (B-3) is specifically 0.1,0.2,0.3,0.4,0.5 parts by mass per 100 parts by mass of the styrene resin (a), and may be within a range of 2 arbitrary values as exemplified herein.
The styrene resin composition for optical use contains 0.01 to 0.5 parts by mass of the total of the phenol antioxidant (B-2) and the phosphorus/phenol antioxidant (B-3) per 100 parts by mass of the styrene resin (A), and preferably 0.05 to 0.3 parts by mass. When the content is within this range, transparency, hue stability, extrusion stability, dimensional stability, wet-heat-whitening resistance, and strength can be simultaneously satisfied. The total content of the phenol antioxidant (B-2) and the phosphorus/phenol antioxidant (B-3) is specifically 0.01,0.02,0.03,0.04,0.05,0.06,0.07,0.08,0.09,0.1,0.2,0.3,0.4,0.5 parts by mass relative to 100 parts by mass of the styrene resin (A), and may be in the range of 2 arbitrary values among the values exemplified here.
The phosphorus-based antioxidant (B-1) is a phosphite having no phenolic hydroxyl group in the basic skeleton thereof, and is preferably a phosphite of a trivalent phosphorus compound. The phosphorus-based antioxidant (B-1) is, for example, at least one selected from 2,2 '-methylenebis (4, 6-di-tert-butyl-1-phenoxy) (2-ethylhexyloxy) phosphorus, tris (2, 4-di-tert-butylphenyl) phosphite, 3, 9-bis (2, 6-di-tert-butyl-4-methylphenoxy) -2,4,8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane, tetrakis (2, 4-di-tert-butylphenyl) [1,1 biphenyl ] -4,4' diphosphonite, ethyl bis (2, 4-di-tert-butyl-6-methylphenyl) phosphite and the like. These may be used alone or in combination of two or more.
The phenolic antioxidant (B-2) is an antioxidant other than a phosphite having a phenolic hydroxyl group in its basic skeleton. The phenolic antioxidant (B-2) may be at least one selected from among octadecyl-3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, ethylbis (oxyethylene) bis [3- (5-t-butyl-4-hydroxy-m-tolyl) propionate ], pentaerythritol tetrakis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], 3, 9-bis [2- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] -1, 1-dimethylethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane, and the like, for example. These may be used alone or in combination of two or more.
The phosphorus/phenol antioxidant (B-3) is a phosphate (phosphite) having a phenolic hydroxyl group in its basic skeleton, and preferably a phosphite of a trivalent phosphorus compound having a phenolic hydroxyl group in its basic skeleton. Examples of the phosphorus/phenol-based antioxidant (B-3) include 6- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propoxy ] -2,4,8, 10-tetra-tert-butyldibenzo [ d, f ] [1,3,2] dioxaphosphepin and the like.
< other ingredients >
The styrene resin composition for optical use preferably contains 6-tert-butyl-2, 4-xylenol (TBX) in an amount of 0.1 to 20ppm, more preferably 1 to 5ppm. When the amount is within this range, a light guide plate having excellent hue and transmittance can be obtained. The TBX content is specifically 0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20ppm, and may be in a range of 2 or more of the values exemplified herein.
The styrene resin composition for optical use preferably contains 0.1 to 100ppm of t-butylcatechol (TBC), more preferably 1 to 20ppm. When the amount is within this range, a light guide plate having excellent hue and transmittance can be obtained. The content of TBC is in particular 0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,30,40,50,60,70,80,90,100ppm, also within a range between any 2 of the values exemplified herein.
The styrene resin composition for optical use preferably contains 0.1 to 500ppm of sulfur, more preferably 1 to 400ppm, and further preferably 5 to 350ppm. When the content is within this range, a light guide plate having particularly excellent hue can be obtained. The sulfur content is specifically 0.1,0.5,1,2,3,4,5,6,7,8,9,10,100,200,300,400,500ppm, and may be within a range of any 2 of the values exemplified herein.
The styrene-based resin composition for optical use may contain a sulfur-based antioxidant, a lactone-based antioxidant, an ultraviolet absorber, a hindered amine-based stabilizer, an antistatic agent, a hydrophilic additive, a releasing agent, and a bluing agent, as long as the effect of the present invention is not impaired. Examples of the release agent include liquid paraffin (mineral oil), polyethylene wax, microcrystalline wax, higher fatty acids such as lauric acid, myristic acid, palmitic acid and stearic acid, higher fatty acid amides such as stearic acid amide, erucic acid amide and ethylene bisstearic acid amide, and higher alcohols such as myristyl alcohol, cetyl alcohol and stearyl alcohol.
< optical characteristics >
The average transmittance of the styrene resin composition at a wavelength of 380 to 780nm at an initial optical path length of 115mm is preferably 85% or more, and more preferably 86% or more.
The styrene resin composition preferably has an average transmittance of 80% or more, more preferably 83% or more, and even more preferably 85% or more, at a wavelength of 380 to 780nm, at an optical path length of 115mm after a long-term durability test.
The YI value of the styrene resin composition at an initial optical path length of 115mm is preferably 6.0 or less, more preferably 4.0 or less.
The YI value of the styrene resin composition after a long-term durability test at an optical path length of 115mm is preferably 7.0 or less, more preferably 5.0 or less.
The YI value difference (. DELTA.YI) between the YI value of the styrene resin composition at an initial optical path length of 115mm and the YI value at an optical path length of 115mm after the long-term durability test is preferably 3.0 or less, more preferably 1.5 or less, and still more preferably 1.0 or less.
< Others >
The vicat softening temperature of the styrene resin composition is preferably 95 to 104 ℃, more preferably 100 to 104 ℃. When the vicat softening temperature is less than 95 ℃, the heat resistance is insufficient, and the light guide plate may be deformed depending on the use environment.
< method for producing styrene resin composition >
Examples of the polymerization method of the styrene resin (a) include known styrene polymerization methods such as a bulk polymerization method, a solution polymerization method, a suspension polymerization method, and an emulsion polymerization method. From the viewpoint of quality and productivity, the bulk polymerization method and the solution polymerization method are preferable, and the continuous polymerization is preferable. Examples of the solvent include alkylbenzenes such as benzene, toluene, ethylbenzene, and xylene, ketones such as acetone and methyl ethyl ketone, and aliphatic hydrocarbons such as hexane and cyclohexane.
In the polymerization of the styrene resin (a), a polymerization assistant such as a polymerization initiator, a chain transfer agent, a crosslinking agent, and the like, and other polymerization assistants may be used as necessary. As the polymerization initiator, a radical polymerization initiator is preferred, and conventionally known examples thereof include peroxides such as1, 1-bis (t-butylperoxy) cyclohexane, 2-bis (t-butylperoxy) butane, 2-bis (4, 4-di-t-butylperoxycyclohexyl) propane and 1, 1-bis (t-amylperoxy) cyclohexane, hydroperoxides such as cumene hydroperoxide and t-butylhydroperoxide, alkyl peroxides such as t-butylperoxyacetate and t-amyl peroxyisononanoate, dialkyl peroxides such as t-butylcumyl peroxide, di-t-butylperoxide, dicumyl peroxide and di-t-hexylperoxide, peroxy esters such as t-butylperoxyacetate, t-butylperoxybenzoate and t-butylperoxyisopropyl monocarbonate, peroxy carbonates such as t-butylperoxyisopropyl carbonate and polyether tetra (t-butylperoxycarbonate), N, N '-azobis (cyclohexane-1-nitrile), N, N' -azobis (2-methylbutyronitrile), N, N '-azobis (2, 4-dimethylvaleronitrile), N, N' -bis [2- (hydroxymethyl) propionitrile, and the like, and combinations of 1 or more thereof may be used. Examples of the chain transfer agent include aliphatic mercaptans such as n-dodecyl mercaptan and t-dodecyl mercaptan, thiocarboxylic acids such as aromatic mercaptan, thioglycolic acid and mercaptopropionic acid, polyfunctional mercaptans obtained by esterifying hydroxyl groups of polyhydric alcohols such as ethylene glycol, tetraethylene glycol, neopentyl glycol, trimethylolpropane, pentaerythritol, dipentaerythritol, tripentaerythritol and sorbitol with thioglycolic acid or mercaptopropionic acid, pentaphenyl ethane, α -methylstyrene dimer and terpinolene. Among them, aliphatic thiols, aromatic thiols, thiocarboxylic acids, and polyfunctional thiols are preferable from the viewpoint of adjusting the sulfur content.
In the continuous polymerization, the styrene resin (a) can be produced by a method including a polymerization step, a devolatilization step, and a granulation step.
First, in the polymerization step, a polymerization reaction is controlled by adjusting the polymerization temperature using a well-known complete mixing tank-type agitation tank, a column-type reactor, or the like, so as to achieve a target molecular weight, molecular weight distribution, reaction conversion rate, or the like.
The polymerization solution containing the polymer leaving the polymerization step is transferred to a devolatilization step, and unreacted monomers and polymerization solvent are removed. The devolatilization step is composed of a vacuum devolatilization tank with a heater, a devolatilization extruder with a vent, and the like. The polymer in a molten state leaving the devolatilization step is transferred to a granulation step. In the granulating step, the molten resin is extruded from the porous die into a strand shape, and processed into a pellet shape by a cold cutting method, an in-air hot cutting method, or an in-water hot cutting method.
The styrene resin composition can be produced by adding an antioxidant (B) to the styrene resin (A). The antioxidant (B) may be added when the styrene-based resin (a) is polymerized, or may be produced by melt-kneading the antioxidant (B) in an extruder in a dry state after the styrene-based resin (a) is polymerized. The pellet-like master batch obtained by previously melt-kneading the antioxidant (B) and the light diffusing agent (C) together with a small amount of a styrene-based resin can be prepared by dry-mixing the styrene-based resin (a) with the master batch and then melt-kneading the mixture.
The content of t-butylcatechol or 6-t-butyl-2, 4-xylenol and the sulfur content in the styrene resin composition can be adjusted to the content at the start of polymerization of the styrene resin (a) and the content in the subsequent devolatilization step or the like. Additionally, adjustments can be added at any point in time.
2. Light guide plate
A light guide plate according to an embodiment of the present invention is a molded article obtained by molding the above styrene resin composition for optical use. The light guide plate is a light guide plate that can be used for a surface light source unit of side light type.
< shape of light guide plate >
The light guide plate has a surface having a concave-convex shape. More specifically, the light guide plate may have a plurality of convex lens-shaped and/or prism-shaped protrusions on a surface thereof. The convex portion is preferably provided on at least one surface of the light guide plate, particularly on one surface which is a front surface (light-emitting surface) of the light guide plate. The other surface may be provided if necessary, but is more preferably provided only on the front surface (light-emitting surface) of the light guide plate. Here, the convex lens-shaped convex portion refers to an arc-shaped convex portion, and the edge shape of the cross section is an arc-shaped protruding body. The prismatic shape is an arc-shaped convex portion, and the edge shape of the cross section is a triangular ridge-shaped projecting strip. In addition, the convex portions are formed in a plurality of parallel relation to each other. In addition, the convex portion is preferably integrally formed on the light guide plate.
The thickness of the light guide plate is 1.0 to 3.0mm, preferably 1.5 to 2.5mm, and more preferably 1.6 to 2.4mm. Within this range, a light guide plate having excellent moldability such as excellent extrusion stability and excellent strength can be easily produced in the molding of a styrene resin composition to which an antioxidant is added.
< method for producing light guide plate >
The light guide plate according to one embodiment of the present invention can be obtained by molding the styrene resin composition described above, and known methods such as sheet extrusion molding, injection molding, and compression molding can be used as the molding method. As an example of the sheet extrusion molding, there is a continuous sheet extrusion molding method including an extrusion step of supplying a resin in a heated and molten state to a feed block and continuously extruding the resin from a die head to form a sheet, a pressing step of sandwiching the resin sheet between a pressure roller and a cooling roller, a conveying step of conveying the resin sheet while bringing the resin sheet into close contact with the cooling roller after the pressing step, and a transfer mold provided on a surface of the cooling roller, and by changing a shape of the transfer mold, an arbitrary uneven shape can be transferred to the sheet surface.
The light guide plate may have a concave-convex shape on the front surface (light-emitting surface) and may be subjected to reflection processing for diffusing light on the back surface. As the reflection processing, for example, a method of imparting unevenness of a dot shape by laser irradiation has been proposed in addition to screen printing and inkjet printing, and an ink having fine particles diffusing light can be used for printing of a dot pattern.
3. Surface light source unit of side light type
A side-light type surface light source unit according to an embodiment of the present invention includes the light guide plate and a light source that supplies light to an end face of the light guide plate. The surface light source unit of side light type is suitable for use as a surface light source device of a liquid crystal display device.
[ examples ] A method for producing a compound
The present invention will be described in more detail below with reference to examples. These are merely examples, and the present invention is not limited thereto.
1. Production of styrene resins A-1 to A-11
A polymerization step was performed by connecting a first reactor as a complete mixing type agitation tank and a second reactor as a plug flow reactor equipped with a static mixer in series, and styrene-based resins were produced under the conditions shown in table 1. The capacity of each reactor was 30 liters for the first reactor and 12 liters for the second reactor. A raw material solution was prepared from the raw material composition shown in table 1, and the raw material solution was continuously supplied to the first reactor at a flow rate shown in table 1. The polymerization initiator was added to the raw material solution at an inlet of the first reactor at an addition concentration (concentration based on the mass of the raw material styrene) described in table 1, and uniformly mixed. The raw materials described in table 1 are as follows:
polymerization initiator t-butyl peroxyisopropyl monocarbonate (manufactured by Nichisu oil Co., ltd.)
I))
Chain transfer agent n-dodecyl mercaptan (PERHEXA C, manufactured by Arkema K.K.)
In the second reactor, a temperature gradient was applied in the direction of the flow of the reaction solution, and the intermediate portion and the outlet portion were adjusted to the temperatures shown in table 1.
Next, the polymer-containing solution continuously withdrawn from the second reactor was introduced into a two-stage vacuum devolatilization vessel with a preheater constituted in series, the temperature of the preheater was adjusted to the resin temperature shown in table 1, and the pressure shown in table 1 was adjusted to separate unreacted styrene and ethylbenzene, and then, the polymer-containing solution was extruded in the form of pellets from a porous die, and the pellets were cooled and cut by a cold cutting method to form pellets.
< melt Mass Flow Rate (MFR) >
The melt mass flow rate was measured according to JIS K7210 at a temperature of 200 ℃ under a load of 49N.
< Vicat softening temperature >
The Vicat softening temperature was measured according to JIS K7206 at a temperature rise rate of 50 ℃/hr and a test load of 50N.
< Sulfur content >
The measurement was carried out by combustion chromatography using an ion chromatograph (DX-120 manufactured by DIONEX Co., ltd.) under the following measurement conditions.
Combustion pretreatment devices AQF-100, WS100, GA-100 (manufactured by Mitsubishi chemical Co., ltd.)
Sample size 100mg
The temperature of the combustion pipe is 900 ℃ at the inlet and 1000 ℃ at the outlet
Absorption liquid 600mg/L H 2 O 2 +10mg/L PO 4 3- (internal standard)
The amount of the absorbent was 5mL
Detector conductivity detector column AS12A
Flow rate of 1.5mL/min
Mobile phase 2.7mM Na 2 CO 3 +0.3mM NaHCO 3
Sample introduction amount of 20. Mu.L
< TBC and TBX content in styrene resin >
After 0.2g of a styrene resin was dissolved in a small amount of THF, 200 μ L of BSTFA (M, O-bis (trimethylsilyl) trifluoroacetamide) was added to perform trimethylsilyl derivatization treatment, and after 10mL of volume was made with THF, the centrifuged supernatant was measured by gas chromatography mass spectrometry (GC/MS) under the following conditions. A calibration curve prepared in advance is used to determine the concentration. GC apparatus 7890A, agilent Corp
Column DB-5ms (0.25mm i.d.. Times.30 m) manufactured by Agilent
The thickness of the liquid film is 0.25 mu m
Column temperature 50 deg.C (1 min) → (20 deg.C/min heating) →
20min at 320 deg.C (6.5 min)
Injection port 300 ℃, 1.5mL/min, (split ratio 1
The injection amount is 1 muL
MS device 5975C manufactured by Agilent
The interface temperature is 320 DEG C
MS detection conditions SIM measures TBC (m/z 295 for quantification, m/z 310 for confirmation)
< molecular weight >
The weight average molecular weight (Mw), Z average molecular weight (Mz), and number average molecular weight (Mn) were measured by Gel Permeation Chromatography (GPC) under the following conditions.
GPC type Shodex GPC-101 manufactured by Showa Denko K.K
Column PLgel 10 μm MIXED-B from Polymer Laboratories Inc
Mobile phase of tetrahydrofuran
Sample concentration 0.2% by mass
The temperature is 40 ℃ in an oven, 35 ℃ at an injection port and 35 ℃ at a detector
The molecular weight of the differential refractometer is calculated according to the elution curve of the monodisperse polystyrene, and the molecular weight of each elution time is calculated as the molecular weight converted by the polystyrene.
[ TABLE 1]
2. Production of styrene resin composition
[ example 1]
A styrene-based resin composition was obtained by mixing 0.2 parts by mass of a phosphorus-based antioxidant (HP-10) and 0.1 parts by mass of a phosphorus-phenol-based antioxidant (GP) with 100 parts by mass of a pelletized styrene-based resin (A-1) in a mixer, and mixing them using a single-screw extruder having a screw diameter of 40mm at a cylinder temperature of 230 ℃ and a screw rotation speed of 100 rpm.
Examples 2 to 18 and comparative examples 1 to 8
Styrene resin compositions and light guide plates were produced in the same manner as in example 1, except that the compounding was changed as shown in tables 2 to 4. The results of various measurements and evaluations are shown in tables 2 to 4.
The phosphorus antioxidant (B-1), the phenol antioxidant (B-2), and the phosphorus/phenol antioxidant (B-3) in tables 2 to 4 are shown below.
(phosphorus antioxidant (B-1))
HP-10
168 tris (2, 4-di-t-butylphenyl) phosphite (Irgafos 168, manufactured by BASF Japan K.K.)
PEP-36 (ADK STAB PEP-36, manufactured by ADEKA Co., ltd.)
P-EPQ tetrakis (2, 4-di-tert-butylphenyl) [1,1 biphenyl ] -4,4 diyl diphosphonite (ClariantCo. Ltd. Hostanox P-EPQ)
Bis (2, 4-di-tert-butyl-6-methylphenyl) ethylphosphite (Irgafos 38, product of BASF Japan K.K.)
(phenol antioxidant (B-2))
1076 octadecyl-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (Irganox 1076, product of BASF Japan K.K.)
245 ethylene bis (oxyethylene) bis [3- (5-tert-butyl-4-hydroxy-m-tolyl) propionate ] (Irganox 245, product of BASF Japan K.K.)
1010 pentaerythrityl tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (Irganox 1010, product of BASF Japan K.K.)
AO80:3, 9-bis [2- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] -1, 1-dimethylethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane (ADK STAB AO-80, manufactured by ADEKA Co., ltd.)
(phosphorus-phenol antioxidant (B-3))
GP 6- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propoxy ] -2,4,8, 10-tetra-tert-butyldibenzo [ d, f ] -1, 3,2] dioxaphosphorin-heptine (Sumilizer GP, sumitomo chemical Co., ltd.)
[ TABLE 2]
[ TABLE 3 ]
[ TABLE 4 ]
3. Evaluation of
The contents of TBC, TBX and sulfur in tables 2 to 4 are values calculated based on the contents of the styrene resin used.
< average transmittance and YI value of styrene resin composition >
The average transmittance and YI value were measured according to the following procedures. Using pellets of a styrene resin composition, injection molding was carried out at a cylinder temperature of 230 ℃ and a mold temperature of 50 ℃ to mold a plate-shaped molded article (initial sample) having a thickness of 127X 3 mm. The sample to be evaluated for long-term durability (sample after long-term durability test) was stored in an oven at 80 ℃ for 1000 hours. Next, test pieces of 115 × 85 × 3mm in thickness were cut out from the plate-shaped molded articles of the initial samples and the samples after the long-term durability test, and the end faces were polished by buffing polishing to prepare plate-shaped molded articles having mirror surfaces on the end faces. The polished plate-like molded article was measured for spectral transmittance at an optical path length of 115mm and a wavelength of 350nm to 800nm using an ultraviolet-visible spectrophotometer V-670 manufactured by Nippon spectral Co., ltd at a diffusion angle of 0 DEG and using an ultraviolet-visible spectrophotometer V-670 manufactured by Nippon spectral Co., ltd, and the YI value in a 2 ℃ field under a C light source was calculated based on JIS K7105.
The average transmittance (total light transmittance) was calculated as the average of the spectral transmittances at wavelengths 380 to 780 nm.
< production of light guide plate >
The styrene resin composition was fed to an extruder with a uniaxial vent having a screw diameter of 90mm and an L/D =32, melt-kneaded at 200 to 235 ℃, discharged at 245 to 250 ℃ using a T die having a lip width of 1000mm and a lip opening of 3.0mm, cooled and solidified using 3 vertical cooling rolls, and then trimmed at the end face to obtain a light guide plate having a width of 800mm and a thickness of 2.0 mm.
< evaluation of moldability and Strength of light guide plate >
The light guide plates in tables 2 to 4 were evaluated for extrusion stability (orifice grease), dimensional stability (hygroscopic deformation), wet-heat whitening resistance, and strength as follows.
(extrusion stability (orifice fat deposition))
The resin temperature of the die was adjusted to 300 ℃, and the occurrence of orifice fat accumulation in the vicinity of the die was evaluated based on the following criteria.
O.ring, no port greasing was observed even 30 minutes after the start of sheet extrusion.
And Δ orifice greasing was observed 10-30 minutes after the start of sheet extrusion.
Port fat deposition was observed within 10 minutes after the start of sheet extrusion.
The "orifice greasing" is a brown or black resin deteriorated product generated around the outlet nozzle of the die, and generally increases with the increase of the extrusion amount, and if the amount exceeds a certain amount, the resin deteriorated product is separated from the nozzle and adheres to the sheet surface.
(dimensional stability (hygroscopic deformation))
A test piece of 200 mm. Times.300 mm was cut out from the light guide plate thus obtained, the test piece was stored at 60 ℃ and 90% relative humidity for 500 hours, the dimensional change of the long side before and after storage was measured, and the deformation ratio was calculated by the following equation.
Deformation ratio = ((length of long side after storage) — (length of long side before storage))/(length of long side before storage) × 100 (%)
The deformation ratio was 0.10% or less, 0.10 to 0.15% as good, and 0.10 to 0.15% as poor, and the dimensional stability (moisture absorption change) of the light guide plate was evaluated as poor.
(resistance to Wet Heat whitening)
A test piece of 200 mm. Times.200 mm was cut out from the light guide plate obtained as described above, the test piece was exposed to an environment of 60 ℃ and 90% relative humidity for 150 hours, the test piece was taken out to an environment of 23 ℃ and 50% relative humidity, the test piece was rapidly cooled and left to stand for 1 hour, and the whitening phenomenon occurring in the test piece was observed, and the wet-heat whitening resistance was evaluated according to the following criteria.
Good quality, no whitening
The albinism was slight but almost disappeared after 24 hours.
Whitening is significant and does not disappear (intensity) after 24 hours
A test piece of 200 mm. Times.200 mm was cut out from the light guide plate thus obtained, and the 50% breaking height was measured by using a ball having a weight of 16.6g in accordance with JIS K-7211. The strength of the light guide plate was measured by setting a value of "o" when the 50% breaking height was 50cm or more, a value of "Δ" when the breaking height was 30 to 50cm, and a value of "x" when the breaking height was 30cm or less.
In the examples, transparency, hue stability, extrusion stability, dimensional stability, wet-heat whitening resistance and strength were good, and examples 1 to 12 and examples 15 to 18 were particularly excellent including the wet-heat whitening resistance.
In examples 1 to 16 and 18, in which the sulfur content was 0.1 to 500ppm, the hue was particularly excellent.
Claims (11)
1. An optical styrene resin composition comprising a styrene resin (A) and an antioxidant (B),
the styrene resin (A) is a copolymer comprising 51 to 99 mass% of styrene monomer units and 1 to 49 mass% of (meth) acrylate monomer units,
the antioxidant (B) comprises at least one of a phosphorus antioxidant (B-1), a phenol antioxidant (B-2) and a phosphorus/phenol antioxidant (B-3),
containing 100 parts by mass of the styrene resin (A)
0.1 to 0.5 parts by mass in total of the phosphorus antioxidant (B-1) and the phosphorus-phenol antioxidant (B-3),
0.01 to 0.5 parts by mass in total of the phenolic antioxidant (B-2) and the phosphorus-phenolic antioxidant (B-3).
2. An optical styrene resin composition according to claim 1,
the phosphorus-based antioxidant (B-1) is at least one selected from the group consisting of 2,2 '-methylenebis (4, 6-di-tert-butyl-1-phenoxy) (2-ethylhexyloxy) phosphorus, tris (2, 4-di-tert-butylphenyl) phosphite, 3, 9-bis (2, 6-di-tert-butyl-4-methylphenoxy) -2,4,8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane, tetrakis (2, 4-di-tert-butylphenyl) [1,1 biphenyl ] -4,4' diphosphonite, and ethyl bis (2, 4-di-tert-butyl-6-methylphenyl) phosphite.
3. A styrene resin composition for optical use according to claim 1 or claim 2,
the phenolic antioxidant (B-2) is at least one selected from the group consisting of octadecyl-3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, ethylbis (oxyethylene) bis [3- (5-t-butyl-4-hydroxy-m-tolyl) propionate ], pentaerythrityl tetrakis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], 3, 9-bis [2- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] -1, 1-dimethylethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane.
4. A styrene resin composition for optical use according to any one of claims 1 or 3,
the above-mentioned phenol-based antioxidant (B-3) is 6- [3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propoxy ] -2,4,8, 10-tetra-tert-butyldibenzo [ d, f ] [1,3,2] dioxaphosphepin.
5. A styrene resin composition for optical use according to any one of claims 1 and 4,
the styrene resin composition for optics comprises 0.1-20 ppm of 6-tertiary butyl-2, 4-xylenol.
6. A styrene resin composition for optical use according to any one of claims 1 to 5,
the styrene resin composition for optical use comprises 0.1 to 500ppm of sulfur.
7. A styrene resin composition for optical use according to any one of claims 1 to 6,
the styrene resin (A) has a weight average molecular weight (Mw) of 5 to 40 ten thousand,
the styrene resin (A) has a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of 1.0 to 3.0.
8. A styrene-based resin composition for optical use according to any one of claims 1 to 7,
the average transmittance at a wavelength of 380-780 nm of an initial optical path length of 115mm is 85% or more.
9. A light guide plate, which is formed by molding the styrene resin composition for optical use according to any one of claims 1 to 8.
10. The light guide plate according to claim 9,
the thickness is 1.0-3.0 mm.
11. A surface light source unit of side light type having the light guide plate according to claim 9 or claim 10 and a light source for supplying light to an end face of the light guide plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-065885 | 2020-04-01 | ||
| JP2020065885 | 2020-04-01 | ||
| PCT/JP2020/045195 WO2021199501A1 (en) | 2020-04-01 | 2020-12-04 | Optical styrene-based resin composition, light guide plate, and edge-light-type planar light-source unit |
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| CN115397913A true CN115397913A (en) | 2022-11-25 |
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| CN202080099327.2A Pending CN115397913A (en) | 2020-04-01 | 2020-12-04 | Styrene resin composition for optical use, light guide plate, and surface light source unit of side light type |
Country Status (6)
| Country | Link |
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| JP (1) | JPWO2021199501A1 (en) |
| KR (1) | KR20220162743A (en) |
| CN (1) | CN115397913A (en) |
| MX (1) | MX2022011738A (en) |
| TW (1) | TW202144444A (en) |
| WO (1) | WO2021199501A1 (en) |
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| WO2023218994A1 (en) * | 2022-05-13 | 2023-11-16 | デンカ株式会社 | Optical styrene-based resin composition, lightguide plate, edge-light system flat-surface light source unit, light diffusion plate, and direct under-light system flat-surface light source unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987780A (en) * | 2011-12-20 | 2014-08-13 | 东洋苯乙烯股份有限公司 | Styrene-based optical resin composition, molded product, and light guide plate |
| CN104245823A (en) * | 2012-07-13 | 2014-12-24 | 东洋苯乙烯股份有限公司 | Styrene-based resin composition for optical applications, molded product and light guide plate |
| CN107250255A (en) * | 2015-02-12 | 2017-10-13 | 电化株式会社 | Optics styrene resin composite |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003075648A (en) | 2001-09-07 | 2003-03-12 | Denki Kagaku Kogyo Kk | Light guide plate |
| JP5597550B2 (en) * | 2008-12-17 | 2014-10-01 | 電気化学工業株式会社 | Optical molded body, light guide plate and light diffuser using the same |
| JP2013154546A (en) * | 2012-01-30 | 2013-08-15 | Mitsubishi Gas Chemical Co Inc | Laminate and protective material provided with the same |
| JP6039907B2 (en) | 2012-02-17 | 2016-12-07 | 東洋スチレン株式会社 | Styrenic resin plate-shaped molded article and light guide plate |
-
2020
- 2020-12-04 JP JP2022511521A patent/JPWO2021199501A1/ja active Pending
- 2020-12-04 WO PCT/JP2020/045195 patent/WO2021199501A1/en active Application Filing
- 2020-12-04 MX MX2022011738A patent/MX2022011738A/en unknown
- 2020-12-04 KR KR1020227037676A patent/KR20220162743A/en unknown
- 2020-12-04 CN CN202080099327.2A patent/CN115397913A/en active Pending
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- 2021-01-07 TW TW110100670A patent/TW202144444A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987780A (en) * | 2011-12-20 | 2014-08-13 | 东洋苯乙烯股份有限公司 | Styrene-based optical resin composition, molded product, and light guide plate |
| CN104245823A (en) * | 2012-07-13 | 2014-12-24 | 东洋苯乙烯股份有限公司 | Styrene-based resin composition for optical applications, molded product and light guide plate |
| CN107250255A (en) * | 2015-02-12 | 2017-10-13 | 电化株式会社 | Optics styrene resin composite |
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| Publication number | Publication date |
|---|---|
| JPWO2021199501A1 (en) | 2021-10-07 |
| KR20220162743A (en) | 2022-12-08 |
| MX2022011738A (en) | 2022-10-13 |
| WO2021199501A1 (en) | 2021-10-07 |
| TW202144444A (en) | 2021-12-01 |
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