JPH0662301B2 - 非顔料性二酸化チタン粉末 - Google Patents
非顔料性二酸化チタン粉末Info
- Publication number
- JPH0662301B2 JPH0662301B2 JP1510637A JP51063789A JPH0662301B2 JP H0662301 B2 JPH0662301 B2 JP H0662301B2 JP 1510637 A JP1510637 A JP 1510637A JP 51063789 A JP51063789 A JP 51063789A JP H0662301 B2 JPH0662301 B2 JP H0662301B2
- Authority
- JP
- Japan
- Prior art keywords
- titanium dioxide
- free
- particle size
- weight
- flowing powder
- 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 - Lifetime
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims description 180
- 239000004408 titanium dioxide Substances 0.000 title claims description 90
- 239000000843 powder Substances 0.000 title claims description 58
- 239000002245 particle Substances 0.000 claims description 60
- 238000000034 method Methods 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000011521 glass Substances 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 16
- 239000000049 pigment Substances 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 8
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 3
- 239000012808 vapor phase Substances 0.000 claims 2
- 229920000742 Cotton Polymers 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 17
- 239000000156 glass melt Substances 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 239000000155 melt Substances 0.000 description 7
- 239000011819 refractory material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000006060 molten glass Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000007496 glass forming Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- YDHWWBZFRZWVHO-UHFFFAOYSA-H [oxido-[oxido(phosphonatooxy)phosphoryl]oxyphosphoryl] phosphate Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O YDHWWBZFRZWVHO-UHFFFAOYSA-H 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical class [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229940083124 ganglion-blocking antiadrenergic secondary and tertiary amines Drugs 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000006066 glass batch Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229940005740 hexametaphosphate Drugs 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 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
- 239000013618 particulate matter Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- -1 sodium fluorosilicate Chemical compound 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000011787 zinc oxide 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Glass Compositions (AREA)
- Glanulating (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/244,676 US5015264A (en) | 1988-09-15 | 1988-09-15 | Nonpigmentary titanium dioxide powders |
| US244,676 | 1988-09-15 | ||
| PCT/US1989/003717 WO1990002706A1 (en) | 1988-09-15 | 1989-08-31 | Nonpigmentary titanium dioxide powders |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04500659A JPH04500659A (ja) | 1992-02-06 |
| JPH0662301B2 true JPH0662301B2 (ja) | 1994-08-17 |
Family
ID=22923689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1510637A Expired - Lifetime JPH0662301B2 (ja) | 1988-09-15 | 1989-08-31 | 非顔料性二酸化チタン粉末 |
Country Status (18)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332433A (en) * | 1993-11-24 | 1994-07-26 | Kerr-Mcgee Chemical Corporation | Titanium dioxide dispersibility |
| JP4428473B2 (ja) * | 1999-01-18 | 2010-03-10 | 株式会社東芝 | 気相法無機酸化物粒子の含水固体状物質及び研磨用スラリーの製造方法 |
| JP4848479B2 (ja) * | 2004-01-22 | 2011-12-28 | 草津電機株式会社 | 分解触媒 |
| AU2008209428B8 (en) * | 2007-01-24 | 2012-08-02 | The Chemours Company Fc,Llc | Process for reducing gangue build-up in the reactor during the chloride process that uses recycled ore |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899278A (en) * | 1959-08-11 | lewis | ||
| US2366473A (en) * | 1941-03-29 | 1945-01-02 | Norbert S Garbisch | Glass batch |
| US2721787A (en) * | 1950-10-23 | 1955-10-25 | American Cyanamid Co | Free-flowing, nondusting titania |
| US2721626A (en) * | 1951-12-15 | 1955-10-25 | Du Pont | Cooling and separating by condensation of hot gaseous suspensions |
| DE1207363B (de) * | 1958-09-17 | 1965-12-23 | Laporte Titanium Ltd | Verfahren zur Herstellung von Titandioxyd |
| US3097075A (en) * | 1961-07-19 | 1963-07-09 | Buell Engineering Company Inc | Method for producing a graded pulverulent material |
| US3112210A (en) * | 1961-07-21 | 1963-11-26 | Cabot Corp | Process for the manufacture of ceramic grade titanium dioxide |
| BE665905A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1964-06-25 | |||
| US3365631A (en) * | 1965-07-14 | 1968-01-23 | Ibm | Semiconductor-ferroelectric dielectrics |
| US3447962A (en) * | 1965-12-13 | 1969-06-03 | William John Megowen | Method of agglomerating |
| GB1204326A (en) * | 1966-12-12 | 1970-09-03 | Laporte Titanium Ltd | Improvements in and relating to titanium dioxide pigments |
| US3754378A (en) * | 1971-09-08 | 1973-08-28 | Pillsbury Co | Apparatus for removing dust from an air stream |
| US3971642A (en) * | 1972-08-11 | 1976-07-27 | Aerosols Control Corporation | Gas scrubber |
| DE2243376A1 (de) * | 1972-09-02 | 1974-03-14 | Kronos Titan Gmbh | Verfahren zur herstellung freifliessender titandioxidpigmente |
| US3795486A (en) * | 1973-02-22 | 1974-03-05 | Environeering | Wet scrubber |
| CH583147A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-05-30 | 1976-12-31 | Pelltec Sa | |
| GB1426925A (en) * | 1973-06-04 | 1976-03-03 | British Steel Corp | Production of hard titania |
| GB1489927A (en) * | 1974-08-10 | 1977-10-26 | Tioxide Group Ltd | Titanium dioxide carrier |
| US4126422A (en) * | 1976-04-26 | 1978-11-21 | Corning Glass Works | Method of densifying metal oxides |
| US4311502A (en) * | 1980-10-27 | 1982-01-19 | Owens-Corning Fiberglas Corporation | Wet scrubbing-pelletizing method |
| US4781911A (en) * | 1987-04-10 | 1988-11-01 | Kemira, Inc. | TiO2 for ceramic frits and glazes |
-
1988
- 1988-09-15 US US07/244,676 patent/US5015264A/en not_active Expired - Fee Related
-
1989
- 1989-08-14 CA CA000608210A patent/CA1326345C/en not_active Expired - Fee Related
- 1989-08-15 TW TW078106314A patent/TW221800B/zh active
- 1989-08-21 ZA ZA896368A patent/ZA896368B/xx unknown
- 1989-08-23 PH PH39133A patent/PH25766A/en unknown
- 1989-08-31 AU AU44002/89A patent/AU619913B2/en not_active Ceased
- 1989-08-31 BR BR898907651A patent/BR8907651A/pt not_active Application Discontinuation
- 1989-08-31 EP EP89911454A patent/EP0434762B1/en not_active Expired - Lifetime
- 1989-08-31 JP JP1510637A patent/JPH0662301B2/ja not_active Expired - Lifetime
- 1989-08-31 DE DE68926620T patent/DE68926620T2/de not_active Expired - Fee Related
- 1989-08-31 WO PCT/US1989/003717 patent/WO1990002706A1/en active IP Right Grant
- 1989-09-08 CN CN89106942A patent/CN1022751C/zh not_active Expired - Fee Related
- 1989-09-09 MY MYPI89001236A patent/MY104203A/en unknown
- 1989-09-11 MX MX017501A patent/MX166207B/es unknown
- 1989-09-12 KR KR1019890013376A patent/KR950011832B1/ko not_active Expired - Fee Related
- 1989-09-15 ES ES8903139A patent/ES2016165A6/es not_active Expired - Fee Related
- 1989-09-15 AR AR89314944A patent/AR242173A1/es active
-
1991
- 1991-01-04 FI FI910055A patent/FI93942C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AR242173A1 (es) | 1993-03-31 |
| KR900004631A (ko) | 1990-04-12 |
| JPH04500659A (ja) | 1992-02-06 |
| FI93942C (fi) | 1995-06-26 |
| KR950011832B1 (ko) | 1995-10-11 |
| FI93942B (fi) | 1995-03-15 |
| FI910055A0 (fi) | 1991-01-04 |
| EP0434762A1 (en) | 1991-07-03 |
| PH25766A (en) | 1991-10-18 |
| CN1022751C (zh) | 1993-11-17 |
| DE68926620T2 (de) | 1997-02-06 |
| US5015264A (en) | 1991-05-14 |
| BR8907651A (pt) | 1991-07-30 |
| DE68926620D1 (de) | 1996-07-11 |
| CN1041144A (zh) | 1990-04-11 |
| AU619913B2 (en) | 1992-02-06 |
| WO1990002706A1 (en) | 1990-03-22 |
| TW221800B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1994-03-21 |
| MY104203A (en) | 1994-02-28 |
| CA1326345C (en) | 1994-01-25 |
| ES2016165A6 (es) | 1990-10-16 |
| AU4400289A (en) | 1990-04-02 |
| MX166207B (es) | 1992-12-23 |
| ZA896368B (en) | 1991-04-24 |
| EP0434762B1 (en) | 1996-06-05 |
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