JP5423945B2 - シリカ系中空粒子分散体の製造方法 - Google Patents
シリカ系中空粒子分散体の製造方法 Download PDFInfo
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- JP5423945B2 JP5423945B2 JP2008213613A JP2008213613A JP5423945B2 JP 5423945 B2 JP5423945 B2 JP 5423945B2 JP 2008213613 A JP2008213613 A JP 2008213613A JP 2008213613 A JP2008213613 A JP 2008213613A JP 5423945 B2 JP5423945 B2 JP 5423945B2
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- JP
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- Prior art keywords
- acid
- silica
- particles
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- butoxysilane
- Prior art date
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 170
- 239000002245 particle Substances 0.000 title claims description 108
- 239000000377 silicon dioxide Substances 0.000 title claims description 82
- 239000006185 dispersion Substances 0.000 title claims description 43
- 238000004519 manufacturing process Methods 0.000 title claims description 37
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 68
- 239000007771 core particle Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 29
- 239000011247 coating layer Substances 0.000 claims description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 239000012736 aqueous medium Substances 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 14
- 150000007524 organic acids Chemical class 0.000 claims description 14
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000011258 core-shell material Substances 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 6
- 235000015165 citric acid Nutrition 0.000 claims description 6
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 5
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 5
- 239000001630 malic acid Substances 0.000 claims description 5
- 235000011090 malic acid Nutrition 0.000 claims description 5
- 125000000962 organic group Chemical group 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 3
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims description 2
- 239000001361 adipic acid Substances 0.000 claims description 2
- 235000011037 adipic acid Nutrition 0.000 claims description 2
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 2
- 239000001530 fumaric acid Substances 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 239000001384 succinic acid Substances 0.000 claims 1
- 239000002612 dispersion medium Substances 0.000 description 58
- 229910000019 calcium carbonate Inorganic materials 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
- 238000000108 ultra-filtration Methods 0.000 description 25
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- -1 silicon alkoxide Chemical class 0.000 description 20
- 239000012528 membrane Substances 0.000 description 19
- 230000002209 hydrophobic effect Effects 0.000 description 13
- 230000002378 acidificating effect Effects 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 239000010420 shell particle Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 8
- 239000000725 suspension Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 150000007514 bases Chemical class 0.000 description 6
- 229940125904 compound 1 Drugs 0.000 description 6
- 229910010272 inorganic material Inorganic materials 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 6
- BLFRQYKZFKYQLO-UHFFFAOYSA-N 4-aminobutan-1-ol Chemical compound NCCCCO BLFRQYKZFKYQLO-UHFFFAOYSA-N 0.000 description 5
- WUGQZFFCHPXWKQ-UHFFFAOYSA-N Propanolamine Chemical compound NCCCO WUGQZFFCHPXWKQ-UHFFFAOYSA-N 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000007865 diluting Methods 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 150000002484 inorganic compounds Chemical class 0.000 description 5
- XMYQHJDBLRZMLW-UHFFFAOYSA-N methanolamine Chemical compound NCO XMYQHJDBLRZMLW-UHFFFAOYSA-N 0.000 description 5
- 229940087646 methanolamine Drugs 0.000 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 4
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229940125782 compound 2 Drugs 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture 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
- 239000000843 powder Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000011164 primary particle Substances 0.000 description 3
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 3
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 3
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- ZZNQQQWFKKTOSD-UHFFFAOYSA-N diethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OCC)(OCC)C1=CC=CC=C1 ZZNQQQWFKKTOSD-UHFFFAOYSA-N 0.000 description 2
- VSYLGGHSEIWGJV-UHFFFAOYSA-N diethyl(dimethoxy)silane Chemical compound CC[Si](CC)(OC)OC VSYLGGHSEIWGJV-UHFFFAOYSA-N 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 2
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 2
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- SHFJWMWCIHQNCP-UHFFFAOYSA-M hydron;tetrabutylazanium;sulfate Chemical compound OS([O-])(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC SHFJWMWCIHQNCP-UHFFFAOYSA-M 0.000 description 2
- 238000010335 hydrothermal treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- RJMRIDVWCWSWFR-UHFFFAOYSA-N methyl(tripropoxy)silane Chemical compound CCCO[Si](C)(OCCC)OCCC RJMRIDVWCWSWFR-UHFFFAOYSA-N 0.000 description 2
- HLXDKGBELJJMHR-UHFFFAOYSA-N methyl-tri(propan-2-yloxy)silane Chemical compound CC(C)O[Si](C)(OC(C)C)OC(C)C HLXDKGBELJJMHR-UHFFFAOYSA-N 0.000 description 2
- NQMRYBIKMRVZLB-UHFFFAOYSA-N methylamine hydrochloride Chemical compound [Cl-].[NH3+]C NQMRYBIKMRVZLB-UHFFFAOYSA-N 0.000 description 2
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000005372 silanol group Chemical group 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001370 static light scattering Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 2
- DDFYFBUWEBINLX-UHFFFAOYSA-M tetramethylammonium bromide Chemical compound [Br-].C[N+](C)(C)C DDFYFBUWEBINLX-UHFFFAOYSA-M 0.000 description 2
- BGQMOFGZRJUORO-UHFFFAOYSA-M tetrapropylammonium bromide Chemical compound [Br-].CCC[N+](CCC)(CCC)CCC BGQMOFGZRJUORO-UHFFFAOYSA-M 0.000 description 2
- FBEVECUEMUUFKM-UHFFFAOYSA-M tetrapropylazanium;chloride Chemical compound [Cl-].CCC[N+](CCC)(CCC)CCC FBEVECUEMUUFKM-UHFFFAOYSA-M 0.000 description 2
- 238000004627 transmission electron microscopy Methods 0.000 description 2
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 2
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 2
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- YRQZONBVYBFPEX-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy-diphenylsilane Chemical compound C=1C=CC=CC=1[SiH](OC(C)(C)C)C1=CC=CC=C1 YRQZONBVYBFPEX-UHFFFAOYSA-N 0.000 description 1
- OQZAQBGJENJMHT-UHFFFAOYSA-N 1,3-dibromo-5-methoxybenzene Chemical compound COC1=CC(Br)=CC(Br)=C1 OQZAQBGJENJMHT-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- PPNCOQHHSGMKGI-UHFFFAOYSA-N 1-cyclononyldiazonane Chemical compound C1CCCCCCCC1N1NCCCCCCC1 PPNCOQHHSGMKGI-UHFFFAOYSA-N 0.000 description 1
- FJAOJVGLIUIDIX-UHFFFAOYSA-N 2-(4-aminobutylamino)ethanol Chemical compound NCCCCNCCO FJAOJVGLIUIDIX-UHFFFAOYSA-N 0.000 description 1
- NWTYCFFQLWYXHG-UHFFFAOYSA-N 2-(aminomethylamino)ethanol Chemical compound NCNCCO NWTYCFFQLWYXHG-UHFFFAOYSA-N 0.000 description 1
- LJDSTRZHPWMDPG-UHFFFAOYSA-N 2-(butylamino)ethanol Chemical compound CCCCNCCO LJDSTRZHPWMDPG-UHFFFAOYSA-N 0.000 description 1
- IWSZDQRGNFLMJS-UHFFFAOYSA-N 2-(dibutylamino)ethanol Chemical compound CCCCN(CCO)CCCC IWSZDQRGNFLMJS-UHFFFAOYSA-N 0.000 description 1
- SWKPGMVENNYLFK-UHFFFAOYSA-N 2-(dipropylamino)ethanol Chemical compound CCCN(CCC)CCO SWKPGMVENNYLFK-UHFFFAOYSA-N 0.000 description 1
- MIJDSYMOBYNHOT-UHFFFAOYSA-N 2-(ethylamino)ethanol Chemical compound CCNCCO MIJDSYMOBYNHOT-UHFFFAOYSA-N 0.000 description 1
- BCLSJHWBDUYDTR-UHFFFAOYSA-N 2-(propylamino)ethanol Chemical compound CCCNCCO BCLSJHWBDUYDTR-UHFFFAOYSA-N 0.000 description 1
- OZICRFXCUVKDRG-UHFFFAOYSA-N 2-[2-hydroxyethyl(propyl)amino]ethanol Chemical compound CCCN(CCO)CCO OZICRFXCUVKDRG-UHFFFAOYSA-N 0.000 description 1
- GVNHOISKXMSMPX-UHFFFAOYSA-N 2-[butyl(2-hydroxyethyl)amino]ethanol Chemical compound CCCCN(CCO)CCO GVNHOISKXMSMPX-UHFFFAOYSA-N 0.000 description 1
- BFBKUYFMLNOLOQ-UHFFFAOYSA-N 2-butoxyethanamine Chemical compound CCCCOCCN BFBKUYFMLNOLOQ-UHFFFAOYSA-N 0.000 description 1
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 1
- BPGIOCZAQDIBPI-UHFFFAOYSA-N 2-ethoxyethanamine Chemical compound CCOCCN BPGIOCZAQDIBPI-UHFFFAOYSA-N 0.000 description 1
- ASUDFOJKTJLAIK-UHFFFAOYSA-N 2-methoxyethanamine Chemical compound COCCN ASUDFOJKTJLAIK-UHFFFAOYSA-N 0.000 description 1
- VAFKLGXCWUIIOZ-UHFFFAOYSA-N 2-methylpropylazanium;hydroxide Chemical compound [OH-].CC(C)C[NH3+] VAFKLGXCWUIIOZ-UHFFFAOYSA-N 0.000 description 1
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 description 1
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- REZZEXDLIUJMMS-UHFFFAOYSA-M dimethyldioctadecylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCCCC REZZEXDLIUJMMS-UHFFFAOYSA-M 0.000 description 1
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- DHAWHVVWUNNONG-UHFFFAOYSA-M tributyl(methyl)azanium;bromide Chemical compound [Br-].CCCC[N+](C)(CCCC)CCCC DHAWHVVWUNNONG-UHFFFAOYSA-M 0.000 description 1
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Description
(式中、R1、R2は独立して1価の有機基を表し、dは0〜3の整数を示す。)
本発明の一実施形態に係るシリカ系中空粒子の製造方法は、コア粒子の表面にシリカ系被覆層が形成されたコア・シェル粒子を分散させた水系媒体中に、少なくとも2以上のブレンステッド酸性基を有する有機酸を加えて、コア粒子の一部または全部を除去する工程、を含む。本願発明において、コア・シェル粒子とは、炭酸カルシウム粒子等のコア粒子の表面にシリカ系被覆層を形成させた複合粒子のことをいう。
まず、コア粒子および水系媒体を含有する分散体に、上記一般式(1)で表される化合物(以下、「化合物1」ともいう。)、ケイ酸およびケイ酸塩から選ばれる少なくとも1種の化合物を塩基性触媒の存在下で加水分解縮合して、コア粒子を被覆するシリカ系被覆層を形成する。ここで、加水分解縮合における反応温度は0〜100℃、好ましくは20〜80℃、反応時間は30〜1000分間、好ましくは30〜300分間である。
上記一般式(2)において、X1,X2,X3,X4は同一または異なり、それぞれ水素原子、炭素数1〜20のアルキル基(好ましくは、メチル基、エチル基、プロピル基、ブチル基、ヘキシル基等)、ヒドロキシアルキル基(好ましくはヒドロキシエチル基等)、アリール基(好ましくはフェニル基等)、アリールアルキル基(好ましくはフェニルメチル基等)を示し、Yはハロゲン原子(好ましくはフッ素原子、塩素原子、臭素原子、ヨウ素原子など)、1〜4価のアニオン性基(好ましくはヒドロキシ基等)を示し、gは1〜4の整数を示す。
次に、コア粒子の表面にシリカ系被覆層が形成されたコア・シェル粒子を分散させた水系媒体中に、少なくとも2以上のブレンステッド酸性基を有する有機酸を加えて、コア粒子の一部または全部を除去する。コア粒子は、本工程においてコア粒子全量に対して70質量%以上除去されることが好ましく、90質量%以上除去されることがより好ましく、95質量%以上除去されることがさらに好ましい。有機酸等の酸性化合物を加えて水系媒体を酸性にすると、コア・シェル粒子から炭酸カルシウム粒子等のコア粒子を溶出させることができる。
次に、シリカ系被覆層を水熱処理する。水熱処理としては、具体的には、上記の「1.2 中空粒子の作製」の工程で得られた分散体に、必要に応じてアルカリ水溶液を添加して、該分散体を塩基性(好ましくはpH8〜13の範囲)に調節し、加熱処理することができる。このとき、加熱処理温度は50〜350℃の範囲、好ましくは100〜300℃の範囲である。加熱処理に際しては、「1.2 中空粒子の作製」の工程で得られた分散体の濃度をあらかじめ希釈して、あるいは濃縮して処理することができる。加熱することにより、分子間の結合を切ったり結んだりすることが繰り返され、シリカ系被覆層が緻密化された(密度の高い)シリカ系中空粒子を得ることができる。なお、ここでいう緻密化されたシリカ系中空粒子とは、被覆層に微細な穴が存在する中空粒子も含む。
必要に応じて、水系媒体を疎水性有機分散媒へと置換する。該工程において置換する分散媒は、疎水性有機分散媒であることが好ましい。本願発明において疎水性有機分散媒とは、水と均一に混合せずに、20℃において水と混合して2層を形成させた時の有機層中の水の含有率が12質量%以下の有機分散媒を意味し、例えば、メチルエチルケトン、メチルイソブチルケトン、シクロヘキサノン等のケトン系分散媒;酢酸エチル、酢酸ブチル等のエステル類;アクリル酸ブチル、メタクリル酸メチル、ヘキサメチレンジアクリレート、トリメチロールプロパントリアクリレート等の不飽和アクリルエステル系分散媒;トルエン、キシレン等の芳香族炭化水素類;ジブチルエーテル等のエーテル類等を挙げることができる。これらの中で、ケトン類が好ましく、メチルエチルケトン、メチルイソブチルケトンがさらに好ましい。これらの疎水性有機分散媒は、1種単独でまたは2種以上を組み合わせて用いることができる。また、本工程では疎水性有機分散媒の代わりに、疎水性有機分散媒と親水性有機分散媒との混合物を用いてもよい。
本発明の一実施形態に係るシリカ系中空粒子は、上記一般式(1)で表される化合物、ケイ酸およびケイ酸塩から選ばれる少なくとも1種の化合物を加水分解縮合して得られた外殻層を有する。そして、本発明の一実施形態に係るシリカ系中空粒子分散体は、上記シリカ系中空粒子分散体の製造方法によって得られたシリカ系中空粒子と、分散媒とを含む。ここで、分散媒としては、水系媒体、有機分散媒のいずれであってもよいが、上述したように有機分散媒であることが好ましく、疎水性有機分散媒であることがさらに好ましい。
以下、本発明を、実施例を挙げてさらに具体的に説明する。本発明は以下の実施例に限定されるものではない。
撹拌装置、ガス吹き込み管付きの容量2Lのフラスコに、蒸留水1Lと酸化カルシウムを加え水酸化カルシウム懸濁液を調整し、これに炭酸ガスを吹き込み固形分濃度16質量%の沈降性炭酸カルシウム懸濁液を得た。懸濁液中の炭酸カルシウムに対してロジン酸ナトリウムを4質量%加え、1時間撹拌して表面処理された炭酸カルシウムの懸濁液を得た。得られた表面処理炭酸カルシウムに炭酸ガスを導通して懸濁液のpHを8.5に調整し、該表面処理炭酸カルシウム懸濁液をろ過して脱水した。得られた炭酸カルシウムのケーキに水を加えて希釈し、強撹拌を行って懸濁液とし、ろ過で脱水を行う操作を4回繰り返した。その後、乾燥、解砕して表面処理炭酸カルシウム粉末を得た。得られた表面処理炭酸カルシウム粉末の一次粒径はTEM観察で40nmであった。50mLポリ瓶に、ジルコニアビーズ50g(東レ製株式会社製トレセラム・ビーズ)(ビーズ径0.1mm)と得られた表面処理炭酸カルシウム粉末4.8g、16質量%のドデシルベンゼンスルホン酸ナトリウム7.5g、蒸留水17.7gを入れて、ペイントシェーカにより5時間振とう、500メッシュフィルターでろ過することで表面処理炭酸カルシウム分散液を得た。フラスコに表面処理炭酸カルシウム分散液23g、蒸留水152g、28質量%のアンモニア水8gを加え10分撹拌し、テトラエトキシシラン19gを加え、室温で1時間撹拌を行った。その後60℃に昇温し、3時間撹拌を行い、室温まで冷却しシリカ被覆炭酸カルシウム粒子(コア・シェル粒子)分散液を得た。
得られたシリカ被覆炭酸カルシウム分散液202gに10質量%のクエン酸水溶液を131g加え、炭酸カルシウムの溶出を行った。蒸留水200gを加えた後、限外ろ過膜を用いて洗浄を行い、331gを排出させた。蒸留水200gを加えた後、限外ろ過膜を用いて洗浄を行い、200gを排出させた。この操作を3回繰り返すことで中空シリカ粒子(シリカ系中空粒子)の分散体を得た。得られた中空シリカ粒子(シリカ系中空粒子)の分散体のTEM写真を図1に示す。本実施例により作製した中空シリカ粒子(シリカ系中空粒子)は、凝集せずに分散している様子を確認することができた。
得られたシリカ被覆炭酸カルシウム粒子(コア・シェル粒子)分散液202gに10質量%の硝酸(無機酸)水溶液を129g加え、炭酸カルシウムの溶出を行うとシリカ粒子の凝集が起こり、沈殿物が生じた。
得られたシリカ被覆炭酸カルシウム粒子(コア・シェル粒子)分散液202gに10質量%の塩酸(無機酸)水溶液を73g加え、炭酸カルシウムの溶出を行うとシリカ粒子の凝集が起こり、沈殿物が生じた。
得られたシリカ被覆炭酸カルシウム粒子(コア・シェル粒子)分散液202gに10質量%の酢酸(1価の有機酸)水溶液を123g加え、炭酸カルシウムの溶出を行うとシリカ粒子の凝集が起こり、沈殿物が生じた。
Claims (3)
- 炭酸カルシウムコア粒子の表面にシリカ系被覆層が形成されたコア・シェル粒子を分散させた水系媒体中に、乳酸、シュウ酸、マレイン酸、マロン酸、アジピン酸、グルタル酸、フマル酸、コハク酸、リンゴ酸、クエン酸および酒石酸からなる群より選択される少なくとも1種の有機酸を加えて、前記炭酸カルシウムコア粒子の一部または全部を除去する工程、を含む、シリカ系中空粒子分散体の製造方法。
- 請求項1において、
さらに、前記シリカ系被覆層を水熱処理する工程、を含む、シリカ系中空粒子分散体の製造方法。 - 請求項1または請求項2において、
さらに、下記一般式(1)で表される化合物、ケイ酸およびケイ酸塩から選ばれる少なくとも1種の化合物を塩基性触媒の存在下で加水分解縮合して、前記炭酸カルシウムコア粒子を被覆する前記シリカ系被覆層を形成する工程、を含む、シリカ系中空粒子分散体の製造方法。
R1 dSi(OR2)4−d ・・・(1)
(式中、R1、R2は独立して1価の有機基を表し、dは0〜3の整数を示す。)
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