JPWO2019240154A1 - 無機酸化物微粒子分散液 - Google Patents
無機酸化物微粒子分散液 Download PDFInfo
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- JPWO2019240154A1 JPWO2019240154A1 JP2020525603A JP2020525603A JPWO2019240154A1 JP WO2019240154 A1 JPWO2019240154 A1 JP WO2019240154A1 JP 2020525603 A JP2020525603 A JP 2020525603A JP 2020525603 A JP2020525603 A JP 2020525603A JP WO2019240154 A1 JPWO2019240154 A1 JP WO2019240154A1
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- Prior art keywords
- inorganic oxide
- oxide fine
- weight
- dispersant
- fine particles
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- 239000010419 fine particle Substances 0.000 title claims abstract description 117
- 229910052809 inorganic oxide Inorganic materials 0.000 title claims abstract description 103
- 239000006185 dispersion Substances 0.000 title claims abstract description 59
- 239000002270 dispersing agent Substances 0.000 claims abstract description 57
- 150000001875 compounds Chemical class 0.000 claims abstract description 54
- 239000002904 solvent Substances 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 17
- 239000001257 hydrogen Substances 0.000 claims abstract description 17
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000010298 pulverizing process Methods 0.000 claims abstract description 8
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910002113 barium titanate Inorganic materials 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 34
- 238000002156 mixing Methods 0.000 claims description 22
- 239000011342 resin composition Substances 0.000 claims description 21
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- 229910052710 silicon Inorganic materials 0.000 description 12
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical class OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 10
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- 239000004925 Acrylic resin Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000011324 bead Substances 0.000 description 9
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 9
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
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- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
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- 229910044991 metal oxide Inorganic materials 0.000 description 5
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- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 4
- 125000003545 alkoxy group Chemical group 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 4
- 239000012046 mixed solvent Substances 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- ISAOCJYIOMOJEB-UHFFFAOYSA-N desyl alcohol Natural products C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
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- 239000003505 polymerization initiator Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- LZMNXXQIQIHFGC-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propyl 2-methylprop-2-enoate Chemical compound CO[Si](C)(OC)CCCOC(=O)C(C)=C LZMNXXQIQIHFGC-UHFFFAOYSA-N 0.000 description 2
- KBQVDAIIQCXKPI-UHFFFAOYSA-N 3-trimethoxysilylpropyl prop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C=C KBQVDAIIQCXKPI-UHFFFAOYSA-N 0.000 description 2
- PQJUJGAVDBINPI-UHFFFAOYSA-N 9H-thioxanthene Chemical compound C1=CC=C2CC3=CC=CC=C3SC2=C1 PQJUJGAVDBINPI-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
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- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
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- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 2
- 235000000126 Styrax benzoin Nutrition 0.000 description 2
- 235000008411 Sumatra benzointree Nutrition 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
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- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
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- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical class [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000004964 sulfoalkyl group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 description 1
- WUMSTCDLAYQDNO-UHFFFAOYSA-N triethoxy(hexyl)silane Chemical compound CCCCCC[Si](OCC)(OCC)OCC WUMSTCDLAYQDNO-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- XYJRNCYWTVGEEG-UHFFFAOYSA-N trimethoxy(2-methylpropyl)silane Chemical compound CO[Si](OC)(OC)CC(C)C XYJRNCYWTVGEEG-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/08—Drying; Calcining ; After treatment of titanium oxide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/006—Alkaline earth titanates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/02—Oxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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Abstract
Description
(A)酸化ジルコニウム(ZrO2)、酸化チタン(TiO2)、及びチタン酸バリウム(BaTiO3)からなる群より選ばれる少なくとも1種の無機酸化物微粒子
(B)分散剤
(C)アルコキシシラン化合物、及び
(D)ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒
を混合する工程、及び、
該混合物を湿式粉砕する工程
を含む、無機酸化物微粒子分散液の製造方法に関する。
(A)酸化ジルコニウム(ZrO2)、酸化チタン(TiO2)、及びチタン酸バリウム(BaTiO3)からなる群より選ばれる少なくとも1種の無機酸化物微粒子、
(B)分散剤、
(C)アルコキシシラン化合物、及び
(D)ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒
を含有し、
(B)分散剤と(C)アルコキシシラン化合物の重量比が20:80〜5:95である無機酸化物微粒子分散液に関する。
本発明は、下記(A)〜(D)成分:
(A)酸化ジルコニウム(ZrO2)、酸化チタン(TiO2)、及びチタン酸バリウム(BaTiO3)からなる群より選ばれる少なくとも1種の無機酸化物微粒子
(B)分散剤
(C)アルコキシシラン化合物、及び
(D)ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒
を混合する工程、及び、
該混合物を湿式粉砕する工程
を含む、無機酸化物微粒子分散液の製造方法に関する。
本発明では(A)無機酸化物微粒子として、入手の容易さ、屈折率等の光学特性の調整が容易であることから、酸化ジルコニウム(ZrO2)、酸化チタン(TiO2)、及びチタン酸バリウム(BaTiO3)からなる群より選ばれる少なくとも1種を用いる。これらの中でも酸化ジルコニウムが好ましい。これらの無機酸化物微粒子は、異種の元素がドープされた化合物であってもよい。無機酸化物微粒子に異種の元素がドープされた化合物としては、例えば、タンタルドープ酸化チタンや、ニオブドープ酸化チタン等が挙げられる。これらの無機酸化物微粒子は、単独で使用してもよいし、2種以上を併用してもよい。また、無機酸化物微粒子の製法も特に限定されない。
分散剤は、無機酸化物微粒子を後述の溶媒中で分散できれば特に限定されないが、例えば、ポリアクリル酸系分散剤、ポリカルボン酸系分散剤、リン酸系分散剤、シリコーン系分散剤が挙げられる。
アルコキシシラン化合物は、分散液をバインダー樹脂と混合したときに無機酸化物微粒子とバインダーとの親和性を高める目的で添加する。本発明の分散液を酸性条件又はアルカリ性条件にすると、無機酸化物微粒子の表面に存在する水酸基とアルコキシシラン化合物が反応し、無機酸化物微粒子の表面処理を行うことができる。
下記式(I)
SiR4 (I)
(式中、Rは、水素、水酸基、炭素数1〜4のアルコキシ基、置換基を有してもよいアルキル基、置換基を有してもよいフェニル基である。但し、4つのRのうち少なくとも1個は炭素数1〜4のアルコキシ基又は水酸基である)
で表される化合物が好ましい。
本発明では、ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒を用いる。これにより、分散剤の使用量を低減しながら安定な無機酸化物微粒子の分散液を得ることができる。さらに、無機酸化物微粒子を、上記要件を満たさない溶媒に分散させる場合、まず無機酸化物微粒子に分散剤を添加し、その後、アルコキシシランを分割添加することや、アルコール性溶媒に分散した後に非アルコール性親油性有機溶媒への溶媒置換が必要となる。しかし、本発明における溶媒中では、無機酸化物微粒子、分散剤、アルコキシシラン化合物を一括添加しても微分散させることができ、分散後の溶媒置換も必須ではなく、分散工程を簡略化可能である。
無機酸化物微粒子分散液には、前述した成分に加えて、任意に他の成分を含有していてもよい。他の成分としては、例えば、(A)無機酸化物微粒子以外の無機微粒子、アクリル酸エステルモノマー、エポキシ樹脂等が挙げられる。
(A)無機酸化物微粒子、(B)分散剤、(C)アルコキシシラン化合物、及び(D)溶媒の混合順は特に限定されず、溶媒に対し無機酸化物微粒子、分散剤、アルコキシシラン化合物を任意の順番で添加してもよい。本発明における溶媒は無機酸化物微粒子を分散させやすいため、全ての成分を一括で添加することもできる。
湿式粉砕工程では、混合工程で得られた混合物を湿式粉砕により粉砕する。ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒中で湿式粉砕することにより、無機酸化物微粒子の粉砕と、該粉砕物の分散を同時に行う。湿式粉砕工程で用いる湿式粉砕機としては、ボールミル、ビーズミルが挙げられるが、これらのミルとは異なる機構を有する装置を用いてもよい。湿式粉砕機としてビーズミルを用いる場合、ビーズ径は30〜100μmが好ましく、回転速度は6〜12m/秒が好ましい。
本発明の機酸化物微粒子分散液は、
下記(A)〜(D)成分:
(A)無機酸化物微粒子、
(B)分散剤、
(C)アルコキシシラン化合物、及び
(D)ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒
を含有し、
(B)分散剤と(C)アルコキシシラン化合物の重量比が20:80〜5:95であることを特徴とする。無機酸化物微粒子分散液に含まれる成分、含有量、製造方法は、無機酸化物微粒子分散液の製造方法について前述した通りである。
本発明の樹脂組成物は、前記無機酸化物微粒子分散液、及びバインダー樹脂を含む。この樹脂組成物の固形分中、無機酸化物微粒子の含有量は30重量%以上が好ましく、50重量%以上がより好ましく、70重量%以上が更に好ましい。上記範囲内であると、この樹脂組成物を硬化してなる硬化物において、必要な屈折率を得ることができる。
SiR1 4 (I)
(式中、R1は、水素、水酸基、炭素数1〜4のアルコキシ基、置換基を有しても良いアルキル基、置換基を有しても良いフェニル基である。但し、4つのR1のうち少なくとも1個は炭素数1〜4のアルコキシ基又は水酸基である)
ポリシロキサン樹脂は、式(I)により表されるアルコキシシランが2分子以上縮合したものであることが好ましい。
樹脂組成物には、前述した成分に加えて、任意に他の成分を含有していてもよい。他の成分としては、例えば、重合開始剤、光増感剤、溶媒、レベリング剤、界面活性剤、消泡剤、中和剤、酸化防止剤、離型剤、紫外線吸収剤等が挙げられる。
本発明の硬化物は、前記樹脂組成物を硬化してなることを特徴とする。このような硬化物の例としては、前記樹脂組成物を基材表面に塗布し、硬化して得られた塗膜が挙げられる。本発明の樹脂組成物は、そこに含まれる無機酸化物微粒子分散液において分散剤の含有量を低減しながら無機酸化物微粒子を十分に分散できている。よって、この樹脂組成物を硬化して得られる塗膜は、良好な光学特性と高い信頼性を有する。
基材の材質は、特に限定されないが、樹脂、無機材料、紙、シリコーン等の半導体作製基板が挙げられる。
(1−1)無機酸化物微粒子
酸化ジルコニウム(第一稀元素化学工業株式会社製、UEP−50、平均一次粒子径20nm)
酸化ジルコニウム(第一稀元素化学工業株式会社製、UEP−100、平均一次粒子径10nm)
酸化チタン(日本アエロジル社製、P90、平均一次粒子径13nm)
(1−2)分散剤
ポリエーテルリン酸エステル系分散剤(楠本化成株式会社製、ディスパロンPW−36、有効成分50%)
(1−3)アルコキシシラン化合物
3−メタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、KBM−503)
3−グリシドキシプロピルトリメトキシシラン(信越化学工業株式会社製、KBM−403)
フェニルトリメトキシシラン(信越化学工業株式会社製:KBM−103)
(1−4)溶媒
プロピレングリコールモノメチルエーテルアセテート(株式会社ダイセル社製、PGMEA)
メチルイソブチルケトン(昭和化学社製、MIBK)
シクロペンタノン(日本ゼオン社製、CPN)
プロピレングリコールモノメチルエーテル(日本乳化剤株式会社製、PGME)
(1−5)バインダー樹脂
フルオレン系アクリレート(大阪ガスケミカル社製、OGSOL EA−0250P)
ポリシロキサン1(合成例1で製造)
(1−6)重合開始剤
Omnirad127(IGM Resins B.V.社製)
(1−7)レベリング剤
BYK−301(BYK Chemie社製)
表2に示す配合量で無機酸化物微粒子、分散剤、アルコキシシラン化合物、及び溶媒を混合した。次いで、該混合物を、メディア型分散機(ビーズミル)を用いて分散させ、無機酸化物微粒子分散液を得た。ビーズミルの処理条件は、混合物の仕込み総重量350g、ビーズ径50μm、回転速度10m/秒、分散時間180分とした。
(3−1)平均粒子径
実施例及び比較例の分散液について、Malvern社製ゼータサイザーナノZSを用いて、動的光散乱法にて測定した散乱強度分布に基づきZ−平均粒子径を算出した。
(3−2)保存安定性
実施例及び比較例の分散液について、製造後1日間静置した後の流動性を目視により確認し、製造直後と同じ流動性を有しているものを「○」と評価した。なお、比較例1〜3では沈殿が生じたため保存安定性を評価することができなかった。
3−メタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、KBM−503)とフェニルトリメトキシシラン(信越化学工業株式会社製、KBM−103)をモル比90:10となるように混合し、MIBKにて50重量%に希釈、水をアルコキシシラン合計量の3当量加えた。20重量%の水酸化ナトリウム水溶液をアルコキシシラン合計量の0.05当量滴下し、60℃にて3時間加熱した。反応後の溶液に水を加え取り除く分液工程を3度行い、硫酸ナトリウムを加え脱水させた。その後エバポレーバーにて濃縮し、ポリシロキサン1を得た。得られたポリシロキサン1の分子量をGPCにて測定したところ、重量平均分子量は3300であった。
無機酸化物微粒子としてUEP50を100重量部、分散剤としてPW−36を10重量部、アルコキシシラン化合物としてKBM−503を10重量部、溶媒としてPGMEを120重量部を混合した。次いで、該混合物を、メディア型分散機(ビーズミル)を用いて分散させ、無機酸化物微粒子分散液を得た。ビーズミルの処理条件は、混合物の仕込み総重量350g、ビーズ径50μm、回転速度10m/秒、分散時間180分とした。得られた無機酸化物微粒子分散液の平均粒子径は40nmであり、製造後1日間静置した後も製造直後と同じ流動性を有していた。
下記表3に示す各成分を混合し、コーティング用樹脂組成物を得た。表3の配合量は重量比を示し、溶剤以外は固形分の数値である。得られたコーティング用樹脂組成物を、バーコーター(No.8)を用いてガラス基材上に塗布し、110℃で40秒間、熱風乾燥機内で加熱して硬化させて膜厚8μmの塗膜を形成し、部材を得た。部材を室温まで冷却させたものを試験片として用いて、後述する方法により塗膜外観、屈折率、全光線透過率、ヘイズ値、及び、信頼性試験後の塗膜外観の評価を行った。評価結果を表3に示す。
(7−1)塗膜外観
上記で作製した試験片の塗膜の状態について目視観察を行い、以下の基準に基づいて評価した。
良好:凝集物やムラがなく、均一な塗膜である
白化:局所的に微粒子が凝集し、白化が発生した。
上記で作製した試験片の屈折率を、分光エリプソメーター(ジェー・エー・ウーラム・ジャパン株式会社製、M−2000C)を用いて、550nmにおける屈折率を測定した。
上記で作製した試験片の全光線透過率、ヘイズ値について、JIS K7150に従い、ヘイズコンピュータ(スガ試験機社製、HGM−2B)を用いて測定した。
温度85℃、相対湿度85%の湿熱オーブン中に、上記で作製した試験片を暴露し、500時間後の塗膜外観を観察し、クラックの有無を確認した。
Claims (8)
- 下記(A)〜(D)成分:
(A)酸化ジルコニウム(ZrO2)、酸化チタン(TiO2)、及びチタン酸バリウム(BaTiO3)からなる群より選ばれる少なくとも1種の無機酸化物微粒子
(B)分散剤
(C)アルコキシシラン化合物、及び
(D)ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒
を混合する工程、及び、
該混合物を湿式粉砕する工程
を含む、無機酸化物微粒子分散液の製造方法。 - (B)分散剤と(C)アルコキシシラン化合物の重量比が20:80〜5:95である、
請求項1に記載の無機酸化物微粒子分散液の製造方法。 - (A)無機酸化物微粒子100重量部に対し、(B)分散剤と(C)アルコキシシラン化合物の総量が5〜40重量部である、
請求項1又は2に記載の無機酸化物微粒子分散液の製造方法。 - 下記(A)〜(D)成分:
(A)酸化ジルコニウム(ZrO2)、酸化チタン(TiO2)、及びチタン酸バリウム(BaTiO3)からなる群より選ばれる少なくとも1種の無機酸化物微粒子、
(B)分散剤、
(C)アルコキシシラン化合物、及び
(D)ハンセン溶解度パラメータの水素結合項(dH)が11以下、極性項(dP)が4以上である溶媒
を含有し、
(B)分散剤と(C)アルコキシシラン化合物の重量比が20:80〜5:95である
無機酸化物微粒子分散液。 - (A)無機酸化物微粒子100重量部に対し、(B)分散剤と(C)アルコキシシラン化合物の総量が5〜40重量部である、
請求項4に記載の無機酸化物微粒子分散液。 - 請求項4又は5に記載の無機酸化物微粒子分散液、及びバインダー樹脂を含む樹脂組成物。
- 固形分中の無機酸化物微粒子の含有量が30重量%以上である、請求項6に記載の樹脂組成物。
- 請求項6又は7に記載の樹脂組成物を硬化してなる硬化物。
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