JPS6156258B2 - - Google Patents
Info
- Publication number
- JPS6156258B2 JPS6156258B2 JP57208686A JP20868682A JPS6156258B2 JP S6156258 B2 JPS6156258 B2 JP S6156258B2 JP 57208686 A JP57208686 A JP 57208686A JP 20868682 A JP20868682 A JP 20868682A JP S6156258 B2 JPS6156258 B2 JP S6156258B2
- Authority
- JP
- Japan
- Prior art keywords
- talc
- coated
- metal
- water
- oxides
- 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.)
- Expired
Links
- 229910052623 talc Inorganic materials 0.000 claims description 160
- 239000000454 talc Substances 0.000 claims description 159
- 239000002245 particle Substances 0.000 claims description 57
- 239000000203 mixture Substances 0.000 claims description 33
- 239000006185 dispersion Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 229910044991 metal oxide Inorganic materials 0.000 claims description 24
- 150000004706 metal oxides Chemical class 0.000 claims description 24
- 239000007864 aqueous solution Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 150000002736 metal compounds Chemical class 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- 238000001556 precipitation Methods 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 235000012222 talc Nutrition 0.000 description 139
- 239000000047 product Substances 0.000 description 36
- 239000000049 pigment Substances 0.000 description 24
- 239000011248 coating agent Substances 0.000 description 23
- 238000000576 coating method Methods 0.000 description 23
- 239000000843 powder Substances 0.000 description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000002994 raw material Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 13
- 239000003153 chemical reaction reagent Substances 0.000 description 13
- 238000010304 firing Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 238000002441 X-ray diffraction Methods 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- 238000001878 scanning electron micrograph Methods 0.000 description 8
- 239000004606 Fillers/Extenders Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011812 mixed powder Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 239000011790 ferrous sulphate Substances 0.000 description 4
- 235000003891 ferrous sulphate Nutrition 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 4
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 229940057995 liquid paraffin Drugs 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 2
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 2
- 229940044175 cobalt sulfate Drugs 0.000 description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 239000000391 magnesium silicate Substances 0.000 description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 description 2
- 235000019792 magnesium silicate Nutrition 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- -1 phosphoric acid compound Chemical class 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 229910017625 MgSiO Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 229910000152 cobalt phosphate Inorganic materials 0.000 description 1
- ZBDSFTZNNQNSQM-UHFFFAOYSA-H cobalt(2+);diphosphate Chemical compound [Co+2].[Co+2].[Co+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O ZBDSFTZNNQNSQM-UHFFFAOYSA-H 0.000 description 1
- MULYSYXKGICWJF-UHFFFAOYSA-L cobalt(2+);oxalate Chemical compound [Co+2].[O-]C(=O)C([O-])=O MULYSYXKGICWJF-UHFFFAOYSA-L 0.000 description 1
- LFSBSHDDAGNCTM-UHFFFAOYSA-N cobalt(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[Ti+4].[Co+2] LFSBSHDDAGNCTM-UHFFFAOYSA-N 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- PFQLIVQUKOIJJD-UHFFFAOYSA-L cobalt(ii) formate Chemical compound [Co+2].[O-]C=O.[O-]C=O PFQLIVQUKOIJJD-UHFFFAOYSA-L 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- CRHLEZORXKQUEI-UHFFFAOYSA-N dialuminum;cobalt(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Co+2].[Co+2] CRHLEZORXKQUEI-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052634 enstatite Inorganic materials 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 229940116007 ferrous phosphate Drugs 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000155 iron(II) phosphate Inorganic materials 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- SDEKDNPYZOERBP-UHFFFAOYSA-H iron(ii) phosphate Chemical compound [Fe+2].[Fe+2].[Fe+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SDEKDNPYZOERBP-UHFFFAOYSA-H 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- BBCCCLINBSELLX-UHFFFAOYSA-N magnesium;dihydroxy(oxo)silane Chemical compound [Mg+2].O[Si](O)=O BBCCCLINBSELLX-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 235000020083 shōchū Nutrition 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
- 229910006540 α-FeOOH Inorganic materials 0.000 description 1
Description
本発明は、タルク粒子の全表面が金属水和酸化
物及び（又は）金属酸化物のみからなる組成物で
均一かつ完全に被覆された被覆タルク及びこのも
のの焼成物並びにその製法に関する。
本発明の被覆タルク及びその焼成物は、分散性
の改善された、また着色加工された優れた顔料特
性を有するタルク顔料である。
タルクは化学的には含水ケイ酸マグネシウムで
あつて式Mg3Si4O10（OH）2で表わされる。タル
クは通常、微細な結晶の微密塊又は葉状粗晶の集
合塊をなして天然に産出する。良質のものは白色
であるが、不純物を含むものは灰色や淡緑色を呈
する。滑らかな感触に富むので滑石といわれる。
わが国では緻密塊状の滑石を石筆に用いたところ
から石筆石とも呼ばれ、また、外国では鱗片状、
粉状のものを石鹸に配合したので石鹸石と呼ばれ
ている。
タルク鉱石は広く世界各地に産出し、わが国で
も産出するが、国内産は鉄などの不純物を多く含
み白色度に劣る。中国、韓国、ソ連のものが高品
質である。鉱床から採掘した原鉱は、機械的に粉
砕し分級して目的とする粒度分布、白色度などを
整える。
タルクは代表的な体質顔料であり、多方面で使
用され、製紙用の充填剤として多量に用いられる
ほか、窯業原料、ゴム、合成樹脂の充填剤とし
て、また絶縁材料として使用される。医薬品及び
化粧品の分野でも体質顔料として広く用いられて
いる。
従来、タルクの加工については、タルクを界面
活性剤含有水溶液に分散させた液に塩化第２鉄水
溶液を加え、次いで苛性ソーダによりPHを9.5に
し撹拌した後、水洗、乾燥してタルクの着色加工
粉末を得る方法が知られている（特開昭54−
86633号公報参照）。また、酸化チタンとタルクを
混合し焼成して白色の体質顔料を得る方法も知ら
れている（特公昭53−13491号公報参照）。しか
し、これらの方法によると、タルクの着色粉末は
得られるもののタルク粒子の１個１個の表面を有
効に被覆することができず、得られた製品は分散
性や色調等の顔料特性が不満足なものであつた。
本発明者らは、タルクを有効に被覆する技術に
ついて研究した結果、タルク粒子の全表面が金属
水和酸化物及び（又は）金属酸化物のみからなる
組成物で均一かつ完全に被覆され従来にない優れ
た顔料特性を示す新規な被覆タルクを開発するこ
とに成功し、また、その製法を確立した。
すなわち、本発明は、タルク粒子の全表面が金
属水和酸化物及び（又は）金属酸化物のみからな
る組成物で均一かつ完全に被覆されてなる被覆タ
ルク及び該被覆タルクの焼成物である。
また、本発明はかかる被覆タルクを製造する方
法であつて、タルクを500〜950℃の温度範囲で焼
成し、得られた焼成タルクを水溶性加水分解性金
属化合物の水溶液に分散させ、タルク粒子の全表
面に金属水和酸化物及び（又は）金属酸化物のみ
からなる組成物の沈殿を生ぜしめ、そして被覆タ
ルクを取得し、場合により次いで焼成することを
特徴とするものである。
さらに、本発明は同じ被覆タルクを製造する別
の方法であつて、タルクと水との分散液を煮沸
し、次いで液に水溶性加水分解性金属化合物を混
合し、タルク粒子の全表面に金属水和酸化物及び
（又は）金属酸化物のみからなる組成物の沈殿を
生ぜしめ、そして被覆タルクを取得し、場合によ
り次いで焼成することを特徴とするものである。
本発明によれば、予め原料タルクを焼成処理又
は煮沸処理に付すことによつて、タルク粒子１個
１個について全表面の均一かつ完全な沈殿被覆が
可能になつたのである。この被覆の状態は走査型
電子顕微鏡写真（第１図及び第３図）で観察され
る。
タルクは、同じ粘土鉱物系体質顔料に属する雲
母、カオリン等と異なり、粒子表面が疎水性であ
るため粒子が水にぬれにくく水中に分散しにくい
から、水分散系でタルクの粒子表面に金属水和酸
化物等を被覆することは一般には困難視されてい
た。それだけに本発明によりタルク粒子全表面の
均一かつ完全な被覆が達成できたことは予想外の
ことであつた。
本発明の被覆タルクは、タルク粒子表面の疎水
性が改善された分散性の良好な体質顔料であり、
また、使用する水溶性金属化合物の種類により
黒、赤、黄、緑、青、燈等の所望の色彩に着色加
工された分散性の良好な着色顔料である。本発明
の被覆したタルクは、粒子の１個１個の表面が均
一かつ完全に被覆されており、光学的効果により
鮮明な色彩と深みのある色調を与える。本発明の
ものは、混合顔料とする場合基材がタルクであり
凝集力が弱いため、混合顔料製造工程において通
常行われる強力な粉砕工程を必ずしも必要とせ
ず、粉砕工程を省略した場合でも混合顔料に良好
な色調を与えることができる。
また、一般に混合顔料の製造工程では顔料粉砕
機例えばアトマイザー、ハンマーミル、ボールミ
ル、ジエツトミル等による粉砕混合が行われ、こ
の場合従来の混合顔料では粉砕により色調変化を
起すことがあるが、本発明の被覆したタルクはそ
のような色調変化を起すことがない。
次に、本発明について詳述する。
まず、本発明の被覆タルクは、タルク粒子の全
表面が金属水和酸化物及び（又は）金属酸化物の
みからなる組成物で均一かつ完全に被覆されたも
のである。
タルク粒子の全表面における被覆物は、金属水
和酸化物及び（又は）金属酸化物のみからなる組
成物であつて、被覆タルクを焼成したものでは、
金属は水和酸化物よりも金属酸化物の状態で多く
存在している。被覆は１個１個のタルク粒子につ
き全表面にわたつて均一かつ完全に施されてお
り、この状態は、第１図及び第３図の走査型電子
顕微鏡写真の観察によつて確認することができ
る。
金属水和酸化物としては、例えばチタン、アル
ミニウム、セリウム、亜鉛、鉄、コバルト又はケ
イ素の水和酸化物が挙げられ、金属酸化物として
は、例えば前記と同じ金属の酸化物が挙げられ
る。被覆物は、これらの１種又は２種以上の金属
水和酸化物及び（又は）これらの１種又は２種以
上の金属酸化物のみからなる組成物からなつてお
り、燐酸化合物やホウ酸化合物を含まない。
本発明の被覆タルクはそのままで使用できる
が、これを焼成した物は、種々の異なつた色彩や
独特の使用感を有している。
本発明の被覆タルク及びその焼成物は固有の色
相を有し固有のＸ線回折を示す。
次に、本発明の製法は、原料タルクを焼成した
後、このものを水溶性加水分解性金属化合物の水
溶液に分散させ、タルク粒子の全表面に金属水和
酸化物等を沈殿させることにより、前記の均一か
つ完全に被覆された被覆タルクを得るものであ
り、そして場合により被覆タルクをさらに焼成す
る。
原料タルクは、一般に体質顔料用として市販さ
れているものでよく、粒径に特に制限はない。焼
成は500〜950℃の温度範囲で行うことが必要であ
る。500℃未満ではタルクの表面は依然として疎
水性のままで水ぬれ性が不良である。950℃を超
えると、タルク本来の触感が失われ隠蔽力が過度
に強くなり好ましくない。これは、950℃を超え
る温度での焼成により、タルクの層間に含まれる
水酸基が脱離してタルクとは異なる構造の率マグ
ネシウムシリケート（MgSiO3、エンスタタイ
ト）を生じるためと考えられる。
焼成温度の好適範囲は700〜900℃である。焼成
時間は通常0.5〜20時間である。焼成は大気中で
行つてよいが、微量不純物による黄変を防止する
見地から不活性ガス（窒素ガスなど）中、還元雰
囲気中又は真空中で行うのが好ましい。
500〜950℃で焼成したタルクにあつては、タル
クの層間に含まれる水酸基が保有されてタルク本
来の触感が保たれており、それでいながらタルク
粒子の表面が親水性に変化してタルクに対し水ぬ
れ性ないし水分散性が付与される。
かかる焼成タルクを水溶性加水分解性金属化合
物の水溶液に分散させる。この分散液中ではタル
クは適量でなければならず、タルクが過剰量であ
る場合はタルク粒子の表面が充分ぬれず、タルク
粒子表面での沈殿被覆を有効に行うことが困難に
なる。この意味でのタルクの適量は粒径によつて
異なり、粒径ごとの許容最大分散量を示すと次表
のとおりである。
The present invention relates to coated talc in which the entire surface of talc particles is uniformly and completely coated with a composition consisting of a metal hydrated oxide and/or only a metal oxide, a fired product thereof, and a method for producing the same. The coated talc and baked products thereof of the present invention are talc pigments with improved dispersibility and excellent pigment properties that have been colored and processed. Talc is chemically hydrated magnesium silicate and has the formula Mg 3 Si 4 O 10 (OH) 2 . Talc usually occurs naturally in the form of fine clumps of fine crystals or agglomerates of coarse foliated crystals. Good quality ones are white, but those containing impurities are gray or pale green. It is called talcum because it has a smooth texture.
In Japan, it is also called shochu stone because the dense block-like talc is used for writing, and in other countries it is called talc stone, which is scaly,
It is called soapstone because the powder is mixed into soap. Talc ore is widely produced in various parts of the world, and is also produced in Japan, but the domestically produced mineral contains many impurities such as iron and has poor whiteness. Those from China, South Korea, and the Soviet Union are of high quality. Raw ore mined from ore deposits is mechanically crushed and classified to achieve the desired particle size distribution, whiteness, etc. Talc is a typical extender pigment and is used in a wide variety of fields.In addition to being used in large quantities as a filler for paper manufacturing, it is also used as a filler for ceramic raw materials, rubber, and synthetic resins, and as an insulating material. It is also widely used as an extender pigment in the pharmaceutical and cosmetic fields. Traditionally, talc was processed by adding a ferric chloride aqueous solution to a dispersion of talc in a surfactant-containing aqueous solution, then adjusting the pH to 9.5 with caustic soda, stirring, washing with water, and drying to produce colored processed talc powder. There is a known method to obtain the
(Refer to Publication No. 86633). Also known is a method of mixing titanium oxide and talc and firing the mixture to obtain a white extender pigment (see Japanese Patent Publication No. 13491/1983). However, although colored powder of talc is obtained by these methods, the surface of each individual talc particle cannot be effectively coated, and the resulting product has unsatisfactory pigment properties such as dispersibility and color tone. It was something. As a result of research into techniques for effectively coating talc, the present inventors have discovered that the entire surface of talc particles is uniformly and completely coated with a composition consisting only of metal hydrated oxides and/or metal oxides. We have succeeded in developing a new coated talc that exhibits excellent pigment properties, and have also established a method for its production. That is, the present invention provides a coated talc in which the entire surface of talc particles is uniformly and completely coated with a composition consisting only of a metal hydrated oxide and/or a metal oxide, and a fired product of the coated talc. The present invention also provides a method for producing such coated talc, in which talc is fired at a temperature range of 500 to 950°C, the resulting fired talc is dispersed in an aqueous solution of a water-soluble hydrolyzable metal compound, and talc particles are is characterized in that a hydrated metal oxide and/or a composition consisting only of metal oxides is precipitated on the entire surface of the talc, and a coated talc is obtained, optionally followed by calcining. Furthermore, the present invention provides another method for producing the same coated talc, in which a dispersion of talc and water is boiled, a water-soluble hydrolyzable metal compound is then mixed into the liquid, and the entire surface of the talc particles is coated with metal. It is characterized in that a composition consisting only of hydrated oxides and/or metal oxides is precipitated and a coated talc is obtained, optionally followed by calcining. According to the present invention, by subjecting the raw material talc to a firing treatment or a boiling treatment in advance, it has become possible to uniformly and completely coat the entire surface of each talc particle with precipitation. The state of this coating is observed in scanning electron micrographs (FIGS. 1 and 3). Unlike mica, kaolin, etc., which belong to the same clay mineral extender pigments, talc has a hydrophobic particle surface, making it difficult to get wet with water and difficult to disperse in water. It has generally been considered difficult to coat with oxidized oxides and the like. Therefore, it was unexpected that the present invention was able to achieve uniform and complete coverage of the entire surface of the talc particles. The coated talc of the present invention is an extender pigment with good dispersibility and improved hydrophobicity on the surface of talc particles,
In addition, it is a highly dispersible colored pigment that can be colored into a desired color such as black, red, yellow, green, blue, light, etc. depending on the type of water-soluble metal compound used. In the coated talc of the present invention, the surface of each particle is uniformly and completely coated, and the optical effect provides a vivid color and a deep tone. Since the base material of the present invention is talc and the cohesive force is weak when making it into a mixed pigment, it does not necessarily require a strong crushing process that is normally carried out in the mixed pigment manufacturing process, and even if the crushing process is omitted, the mixed pigment can give a good color tone. In addition, in general, in the manufacturing process of mixed pigments, pulverization and mixing are performed using a pigment pulverizer such as an atomizer, hammer mill, ball mill, jet mill, etc. In this case, conventional mixed pigments may change in color tone due to pulverization, but the present invention Coated talc does not undergo such color changes. Next, the present invention will be explained in detail. First, the coated talc of the present invention is one in which the entire surface of talc particles is uniformly and completely coated with a composition consisting only of a metal hydrated oxide and/or a metal oxide. The coating on the entire surface of the talc particles is a composition consisting only of a metal hydrated oxide and/or a metal oxide, and the coated talc is baked.
Metals exist more often in the form of metal oxides than in hydrated oxides. The coating is uniformly and completely applied to the entire surface of each talc particle, and this condition can be confirmed by observing the scanning electron micrographs shown in Figures 1 and 3. can. Examples of hydrated metal oxides include hydrated oxides of titanium, aluminum, cerium, zinc, iron, cobalt, or silicon, and examples of metal oxides include oxides of the same metals as mentioned above. The coating is made of a composition consisting only of one or more of these metal hydrated oxides and/or one or more of these metal oxides, and contains no phosphoric acid compound or boric acid compound. Does not include. The coated talc of the present invention can be used as it is, but the fired products have various different colors and a unique feeling of use. The coated talc of the present invention and its fired product have a unique hue and exhibit unique X-ray diffraction. Next, in the production method of the present invention, after calcining the raw material talc, it is dispersed in an aqueous solution of a water-soluble hydrolyzable metal compound, and metal hydrate oxides etc. are precipitated on the entire surface of the talc particles. The above-mentioned uniform and completely coated talc is obtained, and the coated talc is optionally further calcined. The raw material talc may be one that is generally commercially available for extender pigments, and there are no particular restrictions on the particle size. It is necessary to carry out the firing at a temperature range of 500-950°C. Below 500°C, the surface of talc remains hydrophobic and has poor water wettability. If the temperature exceeds 950°C, the original tactile feel of talc will be lost and the hiding power will become excessively strong, which is undesirable. This is thought to be because hydroxyl groups contained between the layers of talc are removed by firing at a temperature exceeding 950°C, producing magnesium silicate (MgSiO 3 , enstatite) having a structure different from that of talc. The preferred range of firing temperature is 700 to 900°C. Firing time is usually 0.5 to 20 hours. The firing may be performed in the air, but from the viewpoint of preventing yellowing due to trace impurities, it is preferable to perform the firing in an inert gas (such as nitrogen gas), in a reducing atmosphere, or in a vacuum. In the case of talc calcined at 500 to 950℃, the hydroxyl groups contained between the layers of talc are retained and the original texture of talc is maintained, while the surface of the talc particles changes to be hydrophilic and becomes talc. On the other hand, water wettability or water dispersibility is imparted. The calcined talc is dispersed in an aqueous solution of a water-soluble hydrolyzable metal compound. The amount of talc in this dispersion must be appropriate; if the amount of talc is excessive, the surface of the talc particles will not be sufficiently wetted, making it difficult to effectively coat the surface of the talc particles with precipitation. In this sense, the appropriate amount of talc varies depending on the particle size, and the maximum permissible dispersion amount for each particle size is shown in the table below.
【表】
分散液中における焼成タルクの量は、粒径に応
じて表の許容最大分散量以下にすることが肝要で
ある。この許容限度を超えると、タルク粒子の表
面で水溶性加水分解性金属化合物による沈殿被覆
が行われない部分が生ずることがある。
水溶性加水分解性金属化合物としては、例えば
硫酸チタン、硫酸チタニル、四塩化チタン、三塩
化チタン、硫酸アルミニウム、硝酸アルミニウ
ム、塩化アルミニウム、硫酸亜鉛、塩化亜鉛、硝
酸亜鉛、硫酸第１鉄、硫酸第２鉄、塩化第１鉄、
塩化第２鉄、硝酸第２鉄、燐酸第１鉄、燐酸第２
鉄、塩化コバルト、硝酸コバルト、燐酸コバル
ト、硫酸コバルト等の無機塩、並びに、酢酸コバ
ルト、ギ酸コバルト、シユウ酸コバルト等の有機
塩、及びケイ酸ナトリウム等のケイ酸塩などが挙
げられる。これらを１種又は２種以上使用するこ
とができる。
水溶性加水分解性金属化合物（被覆試薬）は、
分散液中で加水分解しタルク粒子の表面に金属水
和酸化物及び（又は）金属酸化物のみからなる組
成物の沈殿を生じさせる。このため、沈殿被覆し
た被覆タルクには硫酸、燐酸等は含まれない。こ
の際、沈殿を起させるための加水分解条件として
液のPHを調整し、場合によつては液を加熱する。
PH調整は酸例えば塩酸など、又はアルカリ例えば
苛性ソーダ、炭酸ソーダなどを添加して行う。被
覆試薬の水溶液に焼成タルクを分散させ、液のPH
が酸性になつたときはアルカリを加えて沈殿を起
させ、液がアルカリ性になつたときは酸を加えて
沈殿を起させる。液の温度は室温でもよいが、約
100℃までに上げてもよい。
焼成タルクを被覆試薬の水溶液に分散させるに
は、焼成タルクを被覆試薬水溶液中に添加するの
が好ましいが、焼成タルク分散液中に固形の被覆
試薬を添加してもよい。
被覆は通常バツチ法で操作されるが、所望によ
りタルク分散液の連続流液に被覆試薬を添加する
連続方式で操作することもできる。
被覆試薬すなわち水溶性加水分解性金属化合物
は１種又は２種以上使用されるが、例えば２種使
用する場合焼成タルク分散液に、はじめにチタン
化合物等を加え加熱して沈殿を生ぜしめ、次いで
他の鉄化合物等を加え加熱して沈殿を生ぜしめる
か、又は焼成タルク分散液に同時にこれら２種の
化合物を加え加熱して沈殿を生ぜしめてもよい。
通常、焼成タルクに対して金属水和酸化物及び
（又は）金属酸化物のみからなる組成物を酸化物
として0.05〜50重量％被覆させる。被覆量が0.05
重量％を下回ると粒子表面の均一かつ完全な被覆
が困難になり、50重量％を上回るとタルク本来の
触感が極端に失われる。
被覆終了後、常法に従つて顔料を過、洗浄、
乾燥して製品を得る。製品はそのままで顔料とし
て使用できるが、場合により、種々の異なつた色
彩や使用感を得させるために、製品を更に大気中
又は還元雰囲気中で200〜1000℃の温度範囲で熱
処理することができる。過度に高温で処理すると
タルク顔料が脱水され触感性が悪くなる。好まし
い処理温度は900℃以下である。加熱時間は通常
0.5〜20時間である。
さらに、本発明の別の製法について述べる。本
発明の方法は、前記の被覆タルク又はその焼成物
を製造する方法であつて、タルクと水との分散液
を煮沸し、次いで液に水溶性加水分解性金属化合
物を混合し、タルク粒子の全表面に金属水和酸化
物及び（又は）金属酸化物のみからなる組成物の
沈殿を生ぜしめ、そして被覆タルクを取得し、場
合により次いで焼成するものである。
原料タルクは、前記と同じく市販品でよい。タ
ルクと水との分散液は、タルクと精製水との混合
液でもよく、また酸の水溶液にタルクを混合した
液であつてもよい。この酸としては、例えばギ
酸、酢酸、シユウ酸、酒石酸、クエン酸等の有機
酸、又は塩酸、硝酸、硫酸等の無機酸が挙げられ
る。酸水溶液の濃度は４規定（Ｎ）以下で充分で
ある。煮沸は通常撹拌しながら行う。
煮沸時間は、酸添加の有無又は酸の種類、濃度
によつて一定でないが、通常２〜20時間である。
煮沸処理によりタルク粒子の表面に水酸基が導
入されて水ぬれ性が付与され、タルクは水に均一
に分散するようになる。
このようなタルクの水ぬれ性と水分散性は次の
被覆処理を有効に遂行するのに重要であるが、煮
沸処理に付すべき分散液中のタルクの量は適当な
ものとしなければならない。タルクが過剰量であ
ると、煮沸処理によつてタルクに有効な水ぬれ性
を付与することができない。分散液中に含まれる
タルクの適量は、タルクの粒径により異なり、そ
の平均粒径と許容最大分散量との関係は、焼成タ
ルクに関する前掲第１表に示すところと同様であ
る。
分散液中のタルクの含量は、タルクの粒径に応
じて第１表に示す許容最大分散量を超えないよう
にすることが肝要である。さもないと、タルク粒
子表面の水ぬれ性が悪く被覆を充分有効に行うこ
とができなくなることがある。
煮沸した液に、直ちに又は放冷後、水溶性加水
分解性金属化合物（被覆試薬）を混合する。被覆
試薬は固体のまま混合してもよいが、水溶液とし
て混合するのが好ましい。
被覆試薬である水溶性加水分解性金属化合物と
しては、さきに例示したと同じものを挙げること
ができる。
被覆試薬は、加水分解してタルク粒子表面に金
属水和酸化物及び（又は）金属酸化物のみからな
る組成物の沈殿を与えるが、この場合の加水分解
条件は前記したところと同様である。また、被覆
の操作、被覆量、後処理及び場合によつて行う焼
成処理等についても、前記と同様である。
以下、本発明を実施例により説明する。例中で
部とあるは重量部を表わす。
実施例 １
原料タルク（平均粒径10μｍ）を大気中850℃
で３時間焼成した。放冷後、焼成タルク20部を精
製水800部に加え充分撹拌し分散液を得た。この
分散液に濃度40重量％の硫酸チタニル水溶液28部
を加え、撹拌しながら加熱し６時間沸とうさせ
た。放冷後、過、水洗し100℃で乾燥して、水
和酸化チタン被覆された焼成タルクの白色粉末24
部を得た。
本製品の粒子１個１個の全表面は微粒子状のも
ので完全に被覆されており、その状態は第１図の
走査型電子顕微鏡写真の観察により確認すること
ができる。原料タルクの粒子の表面は第２図の同
写真に示されるとおりである。
本製品のＸ線回折図（Cu−Ｋα線）は第４図
に示すとおりであり、これによれば回折角（ブラ
ツク角２θ）25゜付近にブロードのピークが認め
られる。このピークはアナターゼ型酸化チタン
（TiO2）の最強ピーク101と一致し、被覆微粒子が
酸化チタンであることがわかる。原料タルクのＸ
線回折図は第５図に示されるとおりである。
実施例 ２〜９
タルク（平均粒径7.0μｍ）を出発原料と、大
気中で焼成温度、焼成時間、焼成タルクの分散
量、被覆試薬である水溶性加水分解性金属化合
物、加水分解時のPH、温度を種々変えて、実施例
１と同様にして被覆焼成タルクを製造した。製造
例と結果を下記第２表に示す。[Table] It is important to keep the amount of calcined talc in the dispersion liquid below the allowable maximum dispersion amount shown in the table, depending on the particle size. If this permissible limit is exceeded, some portions of the surface of the talc particles may not be coated by precipitation with the water-soluble hydrolyzable metal compound. Examples of water-soluble hydrolyzable metal compounds include titanium sulfate, titanyl sulfate, titanium tetrachloride, titanium trichloride, aluminum sulfate, aluminum nitrate, aluminum chloride, zinc sulfate, zinc chloride, zinc nitrate, ferrous sulfate, and ferrous sulfate. 2 iron, ferrous chloride,
Ferric chloride, ferric nitrate, ferrous phosphate, ferric phosphate
Examples include inorganic salts such as iron, cobalt chloride, cobalt nitrate, cobalt phosphate, and cobalt sulfate, organic salts such as cobalt acetate, cobalt formate, and cobalt oxalate, and silicates such as sodium silicate. One or more types of these can be used. The water-soluble hydrolyzable metal compound (coating reagent) is
The talc particles are hydrolyzed in the dispersion to form a precipitate of a metal hydrated oxide and/or a composition consisting only of the metal oxide on the surface of the talc particles. Therefore, the precipitated coated talc does not contain sulfuric acid, phosphoric acid, etc. At this time, the pH of the liquid is adjusted as hydrolysis conditions for causing precipitation, and the liquid is heated in some cases.
PH adjustment is performed by adding an acid such as hydrochloric acid or an alkali such as caustic soda or soda carbonate. Calcined talc is dispersed in an aqueous solution of the coating reagent, and the pH of the liquid is
When the liquid becomes acidic, add an alkali to cause precipitation; when the liquid becomes alkaline, add acid to cause precipitation. The temperature of the liquid may be room temperature, but approximately
The temperature may be raised up to 100℃. In order to disperse the calcined talc in the aqueous coating reagent solution, it is preferable to add the calcined talc to the aqueous coating reagent solution, but a solid coating reagent may also be added to the calcined talc dispersion. Coating is usually operated in a batch manner, but if desired it can be operated in a continuous manner by adding the coating reagent to a continuous stream of talc dispersion. One or more types of coating reagents, i.e., water-soluble hydrolyzable metal compounds, may be used. For example, if two types are used, a titanium compound or the like is first added to the calcined talc dispersion and heated to cause precipitation, and then the other coating reagents are added. Alternatively, these two types of compounds may be added to the calcined talc dispersion at the same time and heated to cause precipitation. Usually, calcined talc is coated with 0.05 to 50% by weight of a composition consisting of a metal hydrated oxide and/or only a metal oxide as an oxide. Coverage amount is 0.05
If it is less than 50% by weight, it will be difficult to uniformly and completely coat the particle surface, and if it exceeds 50% by weight, the talc's original feel will be extremely lost. After coating, the pigment is filtered, washed, and
Dry to obtain the product. The product can be used as a pigment as is, but in some cases, the product can be further heat treated in the air or in a reducing atmosphere at temperatures ranging from 200 to 1000°C to obtain different colors and textures. . If treated at excessively high temperatures, the talc pigment will dehydrate and the texture will deteriorate. The preferred treatment temperature is 900°C or less. Heating time is usually
0.5-20 hours. Furthermore, another manufacturing method of the present invention will be described. The method of the present invention is a method for producing the above-mentioned coated talc or a fired product thereof, in which a dispersion of talc and water is boiled, a water-soluble hydrolyzable metal compound is then mixed with the liquid, and talc particles are Precipitation of the metal hydrated oxide and/or composition consisting solely of the metal oxide occurs on the entire surface, and a coated talc is obtained, optionally followed by calcining. The raw material talc may be a commercially available product as described above. The dispersion of talc and water may be a mixture of talc and purified water, or a mixture of talc and an aqueous acid solution. Examples of the acid include organic acids such as formic acid, acetic acid, oxalic acid, tartaric acid, and citric acid, and inorganic acids such as hydrochloric acid, nitric acid, and sulfuric acid. It is sufficient that the concentration of the acid aqueous solution is 4 normal (N) or less. Boiling is usually done while stirring. The boiling time varies depending on whether acid is added or not, and the type and concentration of acid, but is usually 2 to 20 hours. The boiling treatment introduces hydroxyl groups onto the surface of the talc particles, imparting water wettability, and the talc becomes uniformly dispersed in water. Such water wettability and water dispersibility of talc are important for effectively carrying out the subsequent coating treatment, but the amount of talc in the dispersion to be subjected to the boiling treatment must be appropriate. If the amount of talc is excessive, effective water wettability cannot be imparted to the talc by boiling treatment. The appropriate amount of talc contained in the dispersion varies depending on the particle size of the talc, and the relationship between the average particle size and the allowable maximum dispersion amount is the same as shown in Table 1 above regarding calcined talc. It is important that the content of talc in the dispersion does not exceed the maximum permissible dispersion amount shown in Table 1, depending on the particle size of the talc. Otherwise, the surface of the talc particles may have poor water wettability and may not be able to be coated sufficiently effectively. A water-soluble hydrolyzable metal compound (coating reagent) is mixed into the boiled liquid immediately or after cooling. Although the coating reagent may be mixed as a solid, it is preferably mixed as an aqueous solution. As the water-soluble hydrolyzable metal compound which is the coating reagent, the same compounds as those exemplified above can be mentioned. The coating reagent is hydrolyzed to precipitate the metal hydrated oxide and/or the composition consisting only of the metal oxide on the surface of the talc particles, and the hydrolysis conditions in this case are the same as those described above. Further, the coating operation, coating amount, post-treatment, firing treatment performed as the case may be, etc. are the same as described above. The present invention will be explained below using examples. In the examples, parts represent parts by weight. Example 1 Raw material talc (average particle size 10 μm) was heated at 850°C in the atmosphere.
It was baked for 3 hours. After cooling, 20 parts of calcined talc was added to 800 parts of purified water and thoroughly stirred to obtain a dispersion. To this dispersion, 28 parts of an aqueous titanyl sulfate solution having a concentration of 40% by weight was added, and the mixture was heated while stirring and boiled for 6 hours. After cooling, filtering, washing with water, and drying at 100℃ yields a white powder of calcined talc coated with hydrated titanium oxide24
I got the department. The entire surface of each particle of this product is completely covered with fine particles, and this condition can be confirmed by observing the scanning electron micrograph shown in FIG. 1. The surface of the raw material talc particles is as shown in the same photograph in FIG. The X-ray diffraction diagram (Cu-Kα ray) of this product is as shown in Figure 4, and it shows a broad peak around a diffraction angle (Black angle 2θ) of 25°. This peak coincides with the strongest peak 101 of anatase-type titanium oxide (TiO 2 ), indicating that the coated fine particles are titanium oxide. Raw material talc
The line diffraction diagram is as shown in FIG. Examples 2 to 9 Using talc (average particle size 7.0 μm) as a starting material, firing temperature in the air, firing time, amount of dispersion of fired talc, water-soluble hydrolyzable metal compound as a coating reagent, and pH during hydrolysis Coated calcined talc was produced in the same manner as in Example 1 by varying the temperature. Production examples and results are shown in Table 2 below.
【表】
実施例 10
タルク（平均粒径5.0μｍ）を真空中800℃で10
時間焼成した。放冷後、焼成タルク20部を0.1N
濃度の硫酸水溶液800部中に加え充分撹拌した。
得られた分散液に、温度40重量％の硫酸チタニル
水溶液14部を加え撹拌しながら加熱して６時間沸
とうさせた。放冷して80℃になつた後、濃度14重
量％の硫酸第１鉄53部を撹拌下で加えた。次いで
濃度16重量％の苛性ソーダ水溶液を滴下して液の
PHを11として96時間撹拌した。続いて、液、水
洗後100℃で乾燥して、黒色の粉末23部を得た。
このもののＸ線回折図は第６図に示すとおりで
あり、ここでは、タルク、アナターゼ型酸化チタ
ン及び黒酸化鉄（Fe3O4）の回折線が認められ、
生成粉末が黒色を呈している理由が黒酸化鉄のた
めであることがわかる。また、この黒色粉末の走
査型電子顕微鏡写真（提示していない）による
と、タルク粒子の表面が酸化チタン黒酸化鉄で被
覆されている状態を観察することができた。
実施例 11
実施例10と同様にして得た黒色の粉末を、さら
に大気中850℃で４時間焼成して赤色の粉末を得
た。
得られた赤色粉末のＸ線回折図は第７図に示す
とおりであり、ここではタルク、アナターゼ型酸
化チタン、赤酸化鉄（α−Fe2O3）の回折線が認
められる。これは850℃焼成により黒酸化鉄がγ
−Fe2O3を経て赤酸化鉄に変化したことによる。
また、この赤色粉末の走査型電子顕微鏡写真（提
示していない）によると、タルク粒子の表面が酸
化チタンと赤酸化鉄で被覆されている状態を観察
することができた。
実施例 12
実施例10と同様にして、分散液に硫酸チタニル
水溶液を加えて６時間沸とうさせるまでの操作を
行つた。液を放冷した後、濃度14重量％の硫酸第
１鉄水溶液53部を加え、次いで濃度16重量％の苛
性ソーダ水溶液を滴下して液のPHを６とし、撹拌
下48時間放置した。過、水洗後100℃で乾燥し
て、黄色の粉末24部を得た。
得られた黄色粉末のＸ線回折図は第８図に示す
とおりであり、ここではタルク、アナターゼ型酸
化チタン、黄酸化鉄（α−FeOOH）の回折線が
認められた。また、この黄色粉末の走査型電子顕
微鏡写真（提示していない）によると、タルク粒
子の表面が酸化チタンと黄酸化鉄で被覆されてい
る状態を観察することができた。
実施例 13
タルク（平均粒径15μｍ）をN2ガス気流中900
℃で２時間焼成した。放冷後、焼成タルク20部を
0.5N濃度の硫酸水溶液800部に加えて撹拌した。
この分散液に40部の硫酸チタニル水溶液14部を加
えて撹拌しながら加熱した。３時間沸とう後、放
冷し、室温になつてから濃度28重量％の硫酸コバ
ルト水溶液７部を加えた。液に濃度16重量％の苛
性ソーダ水溶液を滴下し液のPHを９とし、室温で
撹拌しながら４時間放置した。放置後、過、水
洗して100℃で乾燥した。乾燥粉末を850℃で３時
間焼成し、緑色の粉末23部を得た。このものはコ
バルトチタネートで被覆された焼成タルクであ
る。
実施例 14
タルク（平均粒径５μｍ）を大気中900℃で１
時間焼成した。放冷後、焼成タルク20部を0.1N
濃度の硫酸水溶液800部中に加えて撹拌した。こ
の分散液に濃度13.5重量％の塩化アルミニウム水
溶液100部と濃度16.5重量％の塩化コバルト水溶
液36.4部を加えた。これに濃度16重量％の苛性ソ
ーダ水溶液を滴下し液のPHを９とした。室温で撹
拌しながら２時間放置した。放置後、過、水洗
して100℃で乾燥した。乾燥粉末を大気中800℃で
４時間焼成し、青色の粉末52部を得た。このもの
はコバルトアルミネートで被覆された焼成タルク
である。
実施例 15
原料タルク（平均粒径5.0μｍ）300部を0.5N濃
度の硫酸水溶液3000部に添加し、撹拌しながら加
熱して、10時間煮沸した。放冷後、煮沸したタル
ク分散液1000部を取り、これに濃度40重量％の硫
酸チタニル水溶液70部を加えて、撹拌しながら加
熱し、６時間沸とうさせた。放冷後、過、水洗
し、80℃で乾燥して、水和チタン酸化物で被覆さ
れたタルクの白色顔料110部を得た。
本製品の粒子１個１個の全表面は微粒子状のも
ので均一かつ完全に被覆されており、その状態は
第３図の走査型電子顕微鏡写真の観察により確認
することができる。原料タルクの粒子の表面は第
２図の同写真に示されるものと同様である。
本製品のＸ線回折図は実施例１の製品のそれ
（第４図）と同じであり、また、原料タルクのＸ
線回折図は実施例１の原料タルクのそれ（第５
図）と同じである。
実施例 16〜23
タルク（平均粒径7.0μｍ）を原料として、下
記第３表に示すとおり、酸水溶液の種類と濃度、
煮沸時間、タルクの使用量、水溶性加水分解性金
属化合物の種類、加水分解時のPHと温度を変えた
ほかは、実施例15と同様にして金属水和酸化物等
で被覆されたタルク顔料を得た。[Table] Example 10 Talc (average particle size 5.0μm) was heated at 800℃ in vacuum for 10 minutes.
Baked for an hour. After cooling, add 20 parts of calcined talc to 0.1N.
The mixture was added to 800 parts of a concentrated sulfuric acid aqueous solution and thoroughly stirred.
To the resulting dispersion, 14 parts of a 40% by weight titanyl sulfate aqueous solution was added and heated with stirring to boil for 6 hours. After cooling to 80° C., 53 parts of ferrous sulfate having a concentration of 14% by weight was added with stirring. Next, a caustic soda aqueous solution with a concentration of 16% by weight was added dropwise to the solution.
The pH was set to 11 and the mixture was stirred for 96 hours. Subsequently, the liquid was washed with water and dried at 100°C to obtain 23 parts of black powder. The X-ray diffraction diagram of this product is as shown in Figure 6, in which diffraction lines of talc, anatase-type titanium oxide, and black iron oxide (Fe 3 O 4 ) are observed.
It can be seen that the black color of the produced powder is due to black iron oxide. Furthermore, according to a scanning electron micrograph (not shown) of this black powder, it was possible to observe that the surface of the talc particles was coated with titanium oxide black iron oxide. Example 11 A black powder obtained in the same manner as in Example 10 was further calcined in the air at 850° C. for 4 hours to obtain a red powder. The X-ray diffraction pattern of the obtained red powder is as shown in FIG. 7, in which diffraction lines of talc, anatase type titanium oxide, and red iron oxide (α-Fe 2 O 3 ) are observed. This is produced by firing at 850°C to produce γ black iron oxide.
-This is due to the change to red iron oxide through Fe 2 O 3 .
Furthermore, according to a scanning electron micrograph (not shown) of this red powder, it was possible to observe that the surface of the talc particles was coated with titanium oxide and red iron oxide. Example 12 In the same manner as in Example 10, an aqueous titanyl sulfate solution was added to the dispersion and the procedure was continued until the dispersion was boiled for 6 hours. After the liquid was allowed to cool, 53 parts of a ferrous sulfate aqueous solution with a concentration of 14% by weight was added, and then a caustic soda aqueous solution with a concentration of 16% by weight was added dropwise to adjust the pH of the liquid to 6, and the mixture was left under stirring for 48 hours. After filtering and washing with water, it was dried at 100°C to obtain 24 parts of yellow powder. The X-ray diffraction pattern of the obtained yellow powder is as shown in FIG. 8, in which diffraction lines of talc, anatase type titanium oxide, and yellow iron oxide (α-FeOOH) were observed. Furthermore, according to a scanning electron micrograph (not shown) of this yellow powder, it was possible to observe that the surface of the talc particles was coated with titanium oxide and yellow iron oxide. Example 13 Talc (average particle size 15 μm) was heated to 900 μm in a N2 gas stream.
It was baked at ℃ for 2 hours. After cooling, add 20 parts of calcined talc.
It was added to 800 parts of a 0.5N aqueous sulfuric acid solution and stirred.
To this dispersion, 14 parts of a 40 parts titanyl sulfate aqueous solution was added and heated while stirring. After boiling for 3 hours, the mixture was allowed to cool, and after reaching room temperature, 7 parts of an aqueous cobalt sulfate solution having a concentration of 28% by weight was added. An aqueous solution of caustic soda having a concentration of 16% by weight was added dropwise to the solution to adjust the pH of the solution to 9, and the solution was left for 4 hours with stirring at room temperature. After standing, it was filtered, washed with water, and dried at 100°C. The dry powder was calcined at 850°C for 3 hours to obtain 23 parts of green powder. This is calcined talc coated with cobalt titanate. Example 14 Talc (average particle size 5 μm) was heated at 900°C in the atmosphere.
Baked for an hour. After cooling, add 20 parts of calcined talc to 0.1N.
The mixture was added to 800 parts of a concentrated sulfuric acid aqueous solution and stirred. To this dispersion were added 100 parts of an aluminum chloride aqueous solution with a concentration of 13.5% by weight and 36.4 parts of a cobalt chloride aqueous solution with a concentration of 16.5% by weight. A caustic soda aqueous solution having a concentration of 16% by weight was added dropwise to this solution to adjust the pH of the solution to 9. The mixture was left at room temperature for 2 hours with stirring. After standing, it was filtered, washed with water, and dried at 100°C. The dry powder was calcined in the air at 800°C for 4 hours to obtain 52 parts of blue powder. This is calcined talc coated with cobalt aluminate. Example 15 300 parts of raw material talc (average particle size 5.0 μm) was added to 3000 parts of a 0.5N aqueous sulfuric acid solution, heated while stirring, and boiled for 10 hours. After cooling, 1000 parts of the boiled talc dispersion was taken, 70 parts of an aqueous titanyl sulfate solution having a concentration of 40% by weight was added thereto, and the mixture was heated with stirring and boiled for 6 hours. After cooling, it was filtered, washed with water, and dried at 80°C to obtain 110 parts of a white talc pigment coated with hydrated titanium oxide. The entire surface of each particle of this product is uniformly and completely covered with fine particles, and this condition can be confirmed by observing the scanning electron micrograph shown in FIG. 3. The surface of the raw material talc particles is similar to that shown in the same photograph in FIG. The X-ray diffraction pattern of this product is the same as that of the product of Example 1 (Figure 4), and the X-ray diffraction pattern of the raw material talc is
The line diffraction pattern is that of the raw material talc of Example 1 (No. 5
Figure). Examples 16-23 Using talc (average particle size 7.0 μm) as a raw material, the type and concentration of acid aqueous solution, as shown in Table 3 below,
Talc pigment coated with metal hydrated oxide etc. in the same manner as in Example 15, except that the boiling time, the amount of talc used, the type of water-soluble hydrolyzable metal compound, and the PH and temperature during hydrolysis were changed. I got it.
本実施例１の製品 80 重量％
本実施例10の製品 0.3重量％
本実施例11の製品 5.6重量％
本実施例12の製品 14.1重量％
〔比較例調合品Ａ〕
タルク（浅田製粉社） 88 重量％
酸化チタンＰ−25（デグサ社） 10
マピコブラツク（チタン工業社） 0.03
マピコレツド（チタン工業社） 0.56
アマオークル（尼崎製釘所） 1.41
〔比較例調合品Ｂ〕
公知製造例１の製品 14.58重量％
公知製造例２の製品 8.80重量％
本実施例１の製品 76.34重量％
本実施例10の製品 0.28重量％
（注：公知製造例１及び２の製品は前記特開昭54
−86633号公報に記載された製造例１及び２
の方法にそれぞれ準じて作つた。）
各調合品を２Kg秤量し、それぞれヘンシエルミ
キサーで充分混合し、混合粉末を５馬力のアトマ
イザーにて10回粉砕した。混合粉末と10回までの
各粉砕粉末について分散性試験、色分れ・色縞試
験、及び色調試験を行つた。試験方法と試験結果
は次のとおりであつた。
分散性試験
混合粉末又は各回粉砕粉末1.5ｇをそれぞれ
共栓目盛付50ml入り試験管に入れ、これに水を
50ml加えてポリトロンにて30秒間分散させた。
分散後、試験管立てにて静置し１時間後の分散
状態を肉眼で観察した。
水の代りに流動パラフインを同量使用して、
同様な操作と観察を行つた。
結果は下記表に示すとおりであつた。
Product of Example 1 80% by weight Product of Example 10 0.3% by weight Product of Example 11 5.6% by weight Product of Example 12 14.1% by weight [Comparative Example Formulation A] Talc (Asada Seifun Co., Ltd.) 88 Weight% Titanium oxide P-25 (Degussa) 10 Mapiko Black (Titan Kogyo) 0.03 Mapicore (Titan Kogyo) 0.56 Amaokle (Amagasaki Nail Works) 1.41 [Comparative Example Preparation B] Product of Known Production Example 1 14.58% by weight Product of Known Production Example 2: 8.80% by weight Product of Example 1: 76.34% by weight Product of Example 10: 0.28% by weight
Production examples 1 and 2 described in -86633 publication
Each was made according to the method of ) 2 kg of each formulation was weighed and thoroughly mixed using a Henschel mixer, and the mixed powder was pulverized 10 times using a 5 horsepower atomizer. A dispersibility test, a color separation/color stripe test, and a color tone test were conducted on the mixed powder and each powder crushed up to 10 times. The test method and test results were as follows. Dispersibility test Put 1.5 g of mixed powder or each time pulverized powder into a 50 ml test tube with a stopper scale, and add water to this.
50 ml was added and dispersed for 30 seconds using a polytron.
After dispersion, the mixture was allowed to stand still in a test tube stand, and the dispersion state was observed with the naked eye after 1 hour. Using the same amount of liquid paraffin instead of water,
Similar operations and observations were performed. The results were as shown in the table below.
【表】【table】
【表】
本表の結果によれば、本発明調合品は、比較
例のものに比し、水中又は流動パラフイン中の
分散性が優れていることがわかる。
色分れ・色縞試験
混合粉末又は各回粉砕粉末６ｇをそれぞれ流
動パラフイン４ｇに加え、小型３本ローラーを
用いて充分に混練した。得られたスラリーを直
径３cm、深さ３mmのアルミ容器に流し込み表面
の状態を肉眼で観察した。
結果は下記表に示すとおりであつた。[Table] According to the results in this table, it can be seen that the preparations of the present invention have superior dispersibility in water or liquid paraffin compared to those of the comparative examples. Color Separation/Color Stripe Test 6 g of the mixed powder or each time pulverized powder was added to 4 g of liquid paraffin, and thoroughly kneaded using three small rollers. The obtained slurry was poured into an aluminum container with a diameter of 3 cm and a depth of 3 mm, and the surface condition was observed with the naked eye. The results were as shown in the table below.
【表】【table】
【表】
本表の結果によれば、本発明調合品は比較例
のものと異なり色縞の発生がなく顔料特性が優
れていることがわかる。
色調試験
各回粉砕粉末について、それぞれカラーアナ
ライザー607型（日立製作所）を用いて粉末セ
ル法で測色し、混合粉末色を標準として各回粉
砕粉末の色差を求めた。
結果は下記表に示すとおりであつた。[Table] According to the results in this table, it can be seen that the preparation of the present invention, unlike the comparative example, does not generate color streaks and has excellent pigment properties. Color Tone Test The color of each pulverized powder was measured by the powder cell method using Color Analyzer Model 607 (Hitachi), and the color difference between the pulverized powders each time was determined using the mixed powder color as a standard. The results were as shown in the table below.
【表】
本表の結果によれば、本発明調合品の場合単
にヘンシエル混合機によつて混合した粉末を標
準としたときの色差がアトマイザーでの粉砕回
数によつて余り増加せず、しかも10回粉砕した
ものの色差が0.90と極めて小さく、したがつて
粉砕力により色調に殆んど変化を生じないこと
がわかる。これに反し、比較例のものの場合に
は粉砕回数とともに色差が大きくなり、粉砕力
による色調の変化が激しいことがわかる。
以上の結果は、本発明の実施例１、10、11、12
の各製品からなる本発明調合品について得られた
ものであるが、同様な結果は、同実施例15、24、
25、26の各製品からなる同様な本発明調合品につ
いても得られた。
以上の各試験結果から明らかなように、本発明
の製品である被覆タルク及びその焼成物は、粉砕
化しても良好な分散性を保ち、色縞を生ぜず、色
調変化を起さず、優れた顔料特性を有するもので
ある。[Table] According to the results in this table, in the case of the preparation of the present invention, the color difference when the powder simply mixed by a Henschel mixer is used as the standard does not increase much depending on the number of times of crushing with an atomizer, and moreover, It can be seen that the color difference after multiple crushing is extremely small at 0.90, and therefore there is almost no change in color tone due to the crushing force. On the other hand, in the case of the comparative example, the color difference increases with the number of times of crushing, and it can be seen that the color tone changes drastically depending on the crushing force. The above results are based on Examples 1, 10, 11, and 12 of the present invention.
Similar results were obtained for the formulation of the present invention consisting of each product of Examples 15, 24, and
Similar formulations of the invention consisting of products 25 and 26 were also obtained. As is clear from the above test results, the coated talc and its fired product, which are products of the present invention, maintain good dispersibility even when pulverized, do not cause color streaks, do not change color tone, and are excellent. It has pigment properties.
図面各図はそれぞれ下記を示すものである。第
１図：走査型電子顕微鏡写真（10000倍）による
実施例１の製品の粒子表面状態図、第２図：同写
真（10000倍）による実施例１の原料タルクの粒
子表面状態図、第３図：同写真（3000倍）による
実施例15の製品の粒子表面状態図、第４図：実施
例１の製品のＸ線回折図（Ｃμ−Ｋα線）、第５
図：実施例１の原料タルクの同図、第６図：実施
例10の製品の同図、第７図：実施例11の製品の同
図、第８図：実施例12の製品の同図。
Each drawing shows the following. Figure 1: Particle surface diagram of the product of Example 1 as shown in a scanning electron micrograph (10,000x). Figure 2: Particle surface diagram of the raw material talc of Example 1 as shown in the same photograph (10,000x). Figure: Particle surface phase diagram of the product of Example 15 as shown in the same photograph (3000x), Figure 4: X-ray diffraction diagram (Cμ-Kα line) of the product of Example 1, Figure 5
Figure: The same figure of the raw material talc of Example 1, Figure 6: The same figure of the product of Example 10, Figure 7: The same figure of the product of Example 11, Figure 8: The same figure of the product of Example 12. .
Claims (1)
（又は）金属酸化物のみからなる組成物で均一か
つ完全に被覆されてなる被覆タルク及び該被覆タ
ルクの焼成物。 ２ 金属水和酸化物がチタン、アルミニウム、セ
リウム、亜鉛、鉄、コバルト又はケイ素の水和酸
化物の１種又は２種以上である特許請求の範囲１
の被覆タルク及び該被覆タルクの焼成物。 ３ 金属酸化物がチタン、アルミニウム、セリウ
ム、亜鉛、鉄、コバルト又はケイ素の酸化物の１
種又は２種以上である特許請求の範囲１の被覆タ
ルク及び該被覆タルクの焼成物。 ４ タルクを500〜950℃の温度範囲で焼成し、焼
成タルクを水溶性加水分解性金属化合物の水溶液
に分散させ、タルク粒子の全表面に金属水和酸化
物及び（又は）金属酸化物のみからなる組成物の
沈殿を生ぜしめ、そして被覆タルクを取得し、場
合により次いで焼成することを特徴とするタルク
粒子の全表面が金属水和酸化物及び（又は）金属
酸化物のみからなる組成物で均一かつ完全に被覆
されてなる被覆タルク及び該被覆タルクの焼成物
の製法。 ５ タルクと水との分散液を煮沸し、次いで液に
水溶性加水分解性金属化合物を混合し、タルク粒
子の全表面に金属水和酸化物及び（又は）金属酸
化物のみからなる組成物の沈殿を生ぜしめ、そし
て被覆タルクを取得し、場合により次いで焼成す
ることを特徴とするタルク粒子の全表面が金属水
和酸化物及び（又は）金属酸化物のみからなる組
成物で均一かつ完全に被覆されてなる被覆タルク
及び該被覆タルクの焼成物の製法。 ６ 水溶性加水分解性金属化合物がチタン、アル
ミニウム、セリウム、亜鉛、鉄、コバルト又はケ
イ素の水溶性加水分解性化合物の１種又は２種以
上である特許請求の範囲４及び５のいずれかの製
法。 ７ 沈殿を生ぜしめるに当り、酸又はアルカリを
加えてPHを調整する特許請求の範囲４及び５のい
ずれかの製法。[Scope of Claims] 1. A coated talc in which the entire surface of talc particles is uniformly and completely coated with a composition consisting only of a metal hydrated oxide and/or a metal oxide, and a fired product of the coated talc. 2. Claim 1 in which the hydrated metal oxide is one or more hydrated oxides of titanium, aluminum, cerium, zinc, iron, cobalt, or silicon.
A coated talc and a fired product of the coated talc. 3 Metal oxide is an oxide of titanium, aluminum, cerium, zinc, iron, cobalt or silicon
The coated talc according to claim 1, which is one kind or two or more kinds, and a fired product of the coated talc. 4 Calcinate talc at a temperature range of 500 to 950°C, disperse the calcined talc in an aqueous solution of a water-soluble hydrolyzable metal compound, and coat the entire surface of the talc particles with metal hydrated oxide and/or metal oxide alone. a composition in which the entire surface of the talc particles consists exclusively of metal hydrated oxides and/or metal oxides, characterized in that the entire surface of the talc particles consists only of metal hydrated oxides and/or metal oxides; A method for producing a coated talc that is uniformly and completely coated and a fired product of the coated talc. 5 Boil a dispersion of talc and water, then mix a water-soluble hydrolyzable metal compound with the liquid, and coat the entire surface of the talc particles with a composition consisting only of metal hydrated oxides and/or metal oxides. precipitation and obtaining coated talc, optionally followed by calcination, characterized in that the entire surface of the talc particles is uniformly and completely coated with a composition consisting only of metal hydrated oxides and/or metal oxides. A method for producing a coated talc and a fired product of the coated talc. 6. The production method according to any one of claims 4 and 5, wherein the water-soluble hydrolyzable metal compound is one or more water-soluble hydrolyzable compounds of titanium, aluminum, cerium, zinc, iron, cobalt, or silicon. . 7. The production method according to any one of claims 4 and 5, in which PH is adjusted by adding acid or alkali during precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20868682A JPS59100167A (en) | 1982-11-30 | 1982-11-30 | Coated talc and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20868682A JPS59100167A (en) | 1982-11-30 | 1982-11-30 | Coated talc and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59100167A JPS59100167A (en) | 1984-06-09 |
| JPS6156258B2 true JPS6156258B2 (en) | 1986-12-01 |
Family
ID=16560386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20868682A Granted JPS59100167A (en) | 1982-11-30 | 1982-11-30 | Coated talc and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59100167A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0930917A (en) * | 1995-07-20 | 1997-02-04 | Miyoshi Kasei:Kk | Inorganic metal oxide-clay mineral-coated powder and cosmetic compounded with the coated powder |
| JP2001302942A (en) * | 2000-02-14 | 2001-10-31 | Miyoshi Kasei Kk | New composite powder and cosmetics containing the same |
| JP2014205649A (en) * | 2013-04-16 | 2014-10-30 | ポーラ化成工業株式会社 | External preparation for skin |
| US11400984B2 (en) | 2019-12-11 | 2022-08-02 | Honda Motor Co., Ltd. | Vehicle body side part structure |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61257909A (en) * | 1985-05-10 | 1986-11-15 | Shiseido Co Ltd | Cosmetic |
| JPS6327418A (en) * | 1986-07-22 | 1988-02-05 | Pola Chem Ind Inc | Cosmetic |
| JP3388592B2 (en) * | 1992-03-05 | 2003-03-24 | テイカ株式会社 | Ultraviolet shielding flaky pigment, method for producing the same, and cosmetic containing the above ultraviolet shielding flaky pigment |
| JP2003336007A (en) * | 2002-05-21 | 2003-11-28 | Kansai Paint Co Ltd | Cationic electrodeposition coating and coated product |
| JP2006145246A (en) * | 2004-11-16 | 2006-06-08 | Kawada Kogyo Kk | Method for testing protection against dust and resistance to water of body structure, and powder for test protection against dust used for the method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885366A (en) * | 1956-06-28 | 1959-05-05 | Du Pont | Product comprising a skin of dense, hydrated amorphous silica bound upon a core of another solid material and process of making same |
| JPS5486633A (en) * | 1977-12-21 | 1979-07-10 | Pola Kasei Kogyo Kk | Cosmetics |
| JPS57111225A (en) * | 1980-10-23 | 1982-07-10 | English Clays Lovering Pochin | Talc treatment |
-
1982
- 1982-11-30 JP JP20868682A patent/JPS59100167A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885366A (en) * | 1956-06-28 | 1959-05-05 | Du Pont | Product comprising a skin of dense, hydrated amorphous silica bound upon a core of another solid material and process of making same |
| JPS5486633A (en) * | 1977-12-21 | 1979-07-10 | Pola Kasei Kogyo Kk | Cosmetics |
| JPS57111225A (en) * | 1980-10-23 | 1982-07-10 | English Clays Lovering Pochin | Talc treatment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0930917A (en) * | 1995-07-20 | 1997-02-04 | Miyoshi Kasei:Kk | Inorganic metal oxide-clay mineral-coated powder and cosmetic compounded with the coated powder |
| JP2001302942A (en) * | 2000-02-14 | 2001-10-31 | Miyoshi Kasei Kk | New composite powder and cosmetics containing the same |
| JP2014205649A (en) * | 2013-04-16 | 2014-10-30 | ポーラ化成工業株式会社 | External preparation for skin |
| US11400984B2 (en) | 2019-12-11 | 2022-08-02 | Honda Motor Co., Ltd. | Vehicle body side part structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59100167A (en) | 1984-06-09 |
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