EP1060127A1 - Hydrate de dioxyde de titane et procede de production de celui-ci - Google Patents
Hydrate de dioxyde de titane et procede de production de celui-ciInfo
- Publication number
- EP1060127A1 EP1060127A1 EP99902739A EP99902739A EP1060127A1 EP 1060127 A1 EP1060127 A1 EP 1060127A1 EP 99902739 A EP99902739 A EP 99902739A EP 99902739 A EP99902739 A EP 99902739A EP 1060127 A1 EP1060127 A1 EP 1060127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- titanium dioxide
- ppm
- sulfate
- dioxide hydrate
- less
- 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.)
- Withdrawn
Links
- IYVLHQRADFNKAU-UHFFFAOYSA-N oxygen(2-);titanium(4+);hydrate Chemical compound O.[O-2].[O-2].[Ti+4] IYVLHQRADFNKAU-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 36
- 239000000725 suspension Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000008367 deionised water Substances 0.000 claims abstract description 15
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 15
- 229910001868 water Inorganic materials 0.000 claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001413 alkali metal ion Inorganic materials 0.000 claims abstract description 12
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000009792 diffusion process Methods 0.000 claims abstract description 9
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 5
- 239000007900 aqueous suspension Substances 0.000 claims abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 29
- 239000012065 filter cake Substances 0.000 claims description 16
- 239000000706 filtrate Substances 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 9
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims description 8
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 22
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 20
- 238000005406 washing Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000413 hydrolysate Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- -1 sulfur ion Chemical class 0.000 description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 108010009736 Protein Hydrolysates Proteins 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 238000006887 Ullmann reaction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/0475—Purification
-
- 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
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
- C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/08—Drying; Calcining ; After treatment of titanium oxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
- C01P2006/82—Compositional purity water content
Definitions
- the invention relates to a process for the production of titanium dioxide hydrate with low sulfate content from a hydrolysate which was obtained by hydrolysis of titanyl sulfate as well as particularly pure titanium dioxide hydrate.
- titanium dioxide hydrate hydrolysate which still contains chemically bound sulfate ions after the removal of metal sulfate-containing diluted sulfuric acid, from titanyl sulfate solutions in metal sulfate-containing sulfuric acid, which solutions are obtained by digestion of titanium raw materials with concentrated sulfuric acid.
- This hydrolysate still contains 5 to 10% by weight S0 4 2" ions with respect to Ti0 2 after intensive washing with water or diluted acid and an optional reducing (so-called bleaching) treatment (Ullmanns Encyclopaedia of Technical
- a sulfate-poor hydrate is created by treating a bleached hydrolysate with ammonia, ammonium hydroxide or carbonate and washing out the ammonium sulfate.
- the hydrate obtained in this manner still contains 0.5 to 2.0% sulfate.
- the S-content of the washed hydrate is still at 0.3% by weight corresponding to 0.9% by weight S0 4 2" .
- DE-A 43 21555 describes a process for the production of mixed oxide powders for denitrating catalysts in which the sulfur ion-containing titanium dioxide hydrate suspension is partially neutralized with lye to a pH value between 4.0 and 6.0, filtered and the filter cake is washed intensively.
- the starting material is a preferably bleached titanium dioxide hydrate suspension with 20 to 40% by weight solids. In this manner, a hydrate can be produced with approximately 2.5% S0 4 2 ⁇ and 20 ppm Na 2 0 content.
- the sulfate-containing hydrate suspension is mixed with 0.1 to 2 parts by weight alkali metal hydroxide or carbonate and stirred at 60 to 120°C for 30 to 60 minutes.
- the pH value of the hydrate suspension must be lowered with organic acids to below 6, preferably below 4.5, in order to remove chemically bound alkali metal ions from the hydrate. Residual organic acids are decomposed by calcining.
- the titanium dioxide hydrates created with this very extensive process contained between 110 and 480 ppm S corresponding to 330 and 1440 ppm S0 4 2" as well as up to 293 ppm Na + .
- An object of the present invention is to provide a simple process for the production of titanium dioxide hydrate with low sulfate content from a optionally bleached hydrolysate which was produced by hydrolysis of titanyl sulfate solutions that contain other metal sulfates and optionally free sulfuric acid.
- an object of the invention is to provide a pure titanium dioxide hydrate that contains less than 250 ppm S0 4 2 " ions and less than 50 ppm ammonium or alkali metal ions with respect to Ti0 2 .
- the objects according to the invention could be surprisingly achieved by neutralization of a 2 to 18% by weight titanium dioxide hydrate suspension.
- Subject matter of the invention is process for the production of pure titanium dioxide hydrate with less than 100 ppm S ⁇ 4 2" ions and less than 25 ppm ammonium or alkali metal ions from titanium dioxide hydrate produced by titanyl sulfate hydrolysis, characterized in that an aqueous suspension is produced with the sulfate-containing titanium dioxide hydrate with 2 to 18% by weight, preferably 5 to 15% by weight, solid calculated as Ti0 2 , the sulfate content of the suspension calculated as H 2 S0 4 is determined, 95 to 101.1 mol-% of the stoichiometric amount of ammonia or alkali metal hydroxide required for neutralization of the calculated H 2 S0 4 amount is added under stirring, the suspension is filtered after a stirring time of 5 to 60 minutes, preferably 10 to 30 minutes, and washed with water of low salt content, preferably deionized water, and a diffusion wash with deionized water at a pressure of 3 to 5 bar is then performed.
- the sulfate-containing hydrate is conventionally obtained in that titanium crude materials such as ilmenite or titanium slag are decomposed with concentrated sulfuric acid.
- the metal sulfates obtained thereby are dissolved in water or dilute sulfuric acid.
- the titanyl sulfate is hydrolysed at 90 to 110°C in the presence of hydrolysis nuclei under formation of sulfate- containing titanium dioxide hydrate and sulfuric acid.
- the filter cake can be freed from coloring heavy metal ions such as Fe 3+ , Cr 3+ - V 3+ if required by a reducing treatment in dilute acid (“bleaching") or by dissolving in sulfuric acid and renewed hydrolysis in the presence of Ti 3+ ions.
- coloring heavy metal ions such as Fe 3+ , Cr 3+ - V 3+ if required by a reducing treatment in dilute acid (“bleaching") or by dissolving in sulfuric acid and renewed hydrolysis in the presence of Ti 3+ ions.
- This titanium dioxide hydrate filter cake which contains 5 to 10% by weight S0 4 2* ions with respect to Ti0 2 that is obtained according to the art by hydrolysis of titanyl sulfate represents the starting material for the production of the pure titanium dioxide hydrate according to the invention and the products produced therefrom by drying or calcining.
- an aqueous suspension with 2 to 18% by weight solids calculated as Ti0 2 , preferably with 5 to 15% by weight solids, is produced from the obtained titanium dioxide hydrate filter cake.
- the S0 4 2" ion content, calculated as H 2 S0, of this suspension is determined and 95 to 100.1 mol-%, preferably 99.5 to 100.1 mol-%, most preferably 99.8 to 100.05 mol-% of the stoichiometric amount of ammonium or alkali metal hydroxide required for neutralization of the calculated H 2 S0 4 amount are added under stirring at 20 to 100°C, preferably 30 to 80°C.
- the suspension mixed with hydroxide After the suspension mixed with hydroxide has been stirred for 5 to 60 minutes, preferably 10 to 30 minutes, it is filtered and washed with hot water at 30 to 100°C, preferably 50 to 95°C.
- the wash occurs with low-salt, preferably deionized water.
- filtration and washing with vacuum filters or preferably pressure filters is carried out at pressures up to a maximum of 3 bar. If the conductivity of the filtrate is clearly lowered, preferably to approximately 300 mS/cm, then the removal of the residual sulfates is carried out on a pressure filter by diffusion washing with salt-free water at 30 to 100°C and a pressure of 3 to 5 bar.
- this is washed until the conductivity of the wash filtrate is below 100 ⁇ S/cm. If a membrane filter press is used as the preferred filter aggregate, then the mother liquor is pressed out with a pressure of 3 to 5 bar before the beginning of the diffusion wash.
- a partial removal of water from the filter cake can occur with increased compacting pressure after the completed diffusion wash.
- the filter cake obtained by applying the process according to the invention generally contains less than 1% by weight sulfate ions and less than 100 ppm ammonia and alkali metal ions, each with respect to Ti0 2 .
- the preferred ammonium or alkali metal hydroxide amounts one obtains the pure titanium dioxide hydrate according to the invention which contains less than 250 ppm S0 4 2" ions and less than 50 ppm ammonium and alkali metal ions, especially less than 100 ppm S0 4 2" ions and less than 25 ppm ammonium or alkali metal ions, each with respect to Ti0 2 .
- This titanium dioxide hydrate is distinguished by a particularly large reaction capability, a high absorption capacity for anions and cations and, depending on the degree of removal of water, a high catalytic activity.
- Subject matter of the invention is also a method for the production of titanium dioxide and/or titanium dioxide hydrate of the composition Ti0 2 x nH 2 0 with 1 > n >. 0 which contains less than 250 ppm, preferably less than 100 ppm, sulfate ions and less than 50 ppm, preferably less than 25 ppm, ammonium and alkali metal ions, each with respect to Ti0 2 that is obtainable by drying and/or calcining the titanium dioxide hydrate according to claim 5 at temperatures in a range of 50 to 750°C.
- sulfate-containing titanium dioxide hydrate was produced by hydrolysis of a sulfuric acid, metal sulfate- containing titanyl sulfate solution.
- the washed filter cake was "bleached” by a reducing treatment.
- the washed filter cake of the "bleached” titanium dioxide hydrate was mashed with water.
- the suspension obtained in this manner contained 25.24% by weight titanium dioxide hydrate calculated as Ti0 2 and 2.14% by weight sulfate ions calculated as H 2 S0 4 .
- the suspension served as the starting material for all examples.
- Comparative Example 1 6240 kg of this suspension were mixed with 213 kg 50% by weight NaOH under intensive stirring. The NaOH amount was sufficient for the neutralization of 97.7 mol % of the H 2 S0 4 contained in the suspension such that a residual content of 1950 ppm H 2 S0 4 is to be expected after washing out the Na 2 S0 4 . 30 minutes after the NaOH addition, the suspension was pumped into a membrane filter press. After completed filtration, the mother liquor was pressed off with 4 bar membrane pressure and washed for 180 minutes with deionized water. The conductivity of the filtrate fell off thereby to 122 ⁇ S. The filter cake was suspended in deionized water and a sample was analyzed. The sample contained 3184 ppm H 2 S0 4 and 266 ppm Na 2 0 with respect to Ti0 2 .
- the homogenized titanium dioxide hydrate suspension contained 2030 ppm S0 4 2" and 5 ppm Na + each with respect to Ti0 2 .
- the sulfate-containing suspension was mixed analogously to example 3 and mixed with 706 1 10 % by weight NaOH corresponding to 100.1 mol-% of the amount required for the neutralization of the contained H 2 S0 4 . Filtration and cake washing were carried out analogously to example 1 until the conductivity of the wash filtrate was 83 ⁇ S/cm. In the homogenized titanium dioxide hydrate suspension, no sulfate could be detected such that ⁇ 50 ppm S0 4 2" with respect to Ti0 2 were present. The Na + content was 86 ppm with respect to Ti0 2 .
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)
Abstract
L'invention concerne un procédé de production d'hydrate de dioxyde de titane contenant moins de 250 ppm d'ions sulfate et moins de 5o ppm d'ions ammonium ou de métal alcalin par rapport au TiO2, qui comporte les étapes consistant à produire une suspension aqueuse comprenant de l'hydrate de dioxyde de titane contenant du sulfate, et qui présente de 2 à 18 % en poids, de préférence de 5 à 15 % en poids de solide exprimé en TiO2; déterminer la teneur en sulfate de la suspension exprimée en H2SO4; ajouter en agitant 95 à 100,1 % molaire de la quantité stoéchiométrique d'ammoniaque ou d'hydroxyde de métal alcalin nécessaire à la neutralisation de la quantité calculée de H2SO4; filtrer la suspension après une durée d'agitation de 5 à 60 minutes, de préférence de 10 à 30 minutes; laver à l'eau peu salée, de préférence désionisée; puis effectuer un lavage par diffusion à l'aide d'eau désionisée à une pression de 3 à 5 bars.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19806471A DE19806471A1 (de) | 1998-02-17 | 1998-02-17 | Reines Titandioxidhydrat und Verfahren zu dessen Herstellung |
| DE19806471 | 1998-02-17 | ||
| PCT/IB1999/000272 WO1999041200A1 (fr) | 1998-02-17 | 1999-02-16 | Hydrate de dioxyde de titane et procede de production de celui-ci |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1060127A1 true EP1060127A1 (fr) | 2000-12-20 |
Family
ID=7857971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99902739A Withdrawn EP1060127A1 (fr) | 1998-02-17 | 1999-02-16 | Hydrate de dioxyde de titane et procede de production de celui-ci |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP1060127A1 (fr) |
| JP (1) | JP2002503620A (fr) |
| KR (1) | KR20010072550A (fr) |
| CN (1) | CN1291168A (fr) |
| AU (1) | AU742966B2 (fr) |
| BR (1) | BR9908003A (fr) |
| CA (1) | CA2321250A1 (fr) |
| DE (1) | DE19806471A1 (fr) |
| MY (1) | MY133018A (fr) |
| NO (1) | NO20004103L (fr) |
| PL (1) | PL342451A1 (fr) |
| WO (1) | WO1999041200A1 (fr) |
| ZA (1) | ZA991226B (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047012A (ja) * | 2000-07-31 | 2002-02-12 | Sumitomo Chem Co Ltd | 酸化チタンの製造方法 |
| AU781450B2 (en) * | 2000-07-31 | 2005-05-26 | Sumitomo Chemical Company, Limited | Titanium oxide production process |
| US8071069B2 (en) | 2001-08-22 | 2011-12-06 | Shell Oil Company | Purification of titania |
| US7371276B2 (en) | 2002-08-07 | 2008-05-13 | Ishihara Sangyo Kaisha, Ltd. | Titanium dioxide pigment and method for producing the same and resin composition using the same |
| DE10303287A1 (de) * | 2003-01-28 | 2004-07-29 | Sachtleben Chemie Gmbh | Verfahren zur Neutralisation und Wiederverwendung von bei der Herstellung von Titandioxid nach dem Sulfatverfahren entstehenden Aufschlussrückständen |
| DE102004020213A1 (de) * | 2004-04-22 | 2005-11-24 | Kerr-Mcgee Pigments Gmbh | Zusammensetzung für das Chemisch-Mechanische Polieren (CMP) |
| JP6286395B2 (ja) * | 2015-08-05 | 2018-02-28 | 太陽インキ製造株式会社 | 硬化性樹脂組成物、ドライフィルム、硬化物およびプリント配線板 |
| TWI673332B (zh) * | 2014-12-26 | 2019-10-01 | 日商太陽油墨製造股份有限公司 | 硬化性樹脂組成物、乾膜、硬化物以及印刷配線板 |
| DE102016110374A1 (de) * | 2016-06-06 | 2017-12-07 | Huntsman P&A Germany Gmbh | Titandioxid-Sol, Verfahren zu dessen Herstellung und daraus gewonnene Produkte |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518053A (en) * | 1968-04-16 | 1970-06-30 | Nat Lead Co | Method for producing an improved titanium dioxide pigment |
| DE2423983C3 (de) * | 1974-05-17 | 1978-09-07 | Bayer Antwerpen N.V., Antwerpen (Belgien) | Verfahren zum Aufbereiten wäßriger Titandioxidhydrat-Suspensionen durch Druckfiltration |
-
1998
- 1998-02-17 DE DE19806471A patent/DE19806471A1/de not_active Ceased
-
1999
- 1999-02-12 MY MYPI99000511A patent/MY133018A/en unknown
- 1999-02-16 JP JP2000531403A patent/JP2002503620A/ja active Pending
- 1999-02-16 AU AU22938/99A patent/AU742966B2/en not_active Ceased
- 1999-02-16 WO PCT/IB1999/000272 patent/WO1999041200A1/fr not_active Ceased
- 1999-02-16 PL PL99342451A patent/PL342451A1/xx unknown
- 1999-02-16 KR KR1020007009010A patent/KR20010072550A/ko not_active Withdrawn
- 1999-02-16 ZA ZA9901226A patent/ZA991226B/xx unknown
- 1999-02-16 CN CN99803046A patent/CN1291168A/zh active Pending
- 1999-02-16 EP EP99902739A patent/EP1060127A1/fr not_active Withdrawn
- 1999-02-16 BR BR9908003-6A patent/BR9908003A/pt not_active IP Right Cessation
- 1999-02-16 CA CA002321250A patent/CA2321250A1/fr not_active Abandoned
-
2000
- 2000-08-16 NO NO20004103A patent/NO20004103L/no not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9941200A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA991226B (en) | 2000-08-16 |
| NO20004103L (no) | 2000-10-16 |
| NO20004103D0 (no) | 2000-08-16 |
| CN1291168A (zh) | 2001-04-11 |
| JP2002503620A (ja) | 2002-02-05 |
| AU742966B2 (en) | 2002-01-17 |
| BR9908003A (pt) | 2001-11-06 |
| CA2321250A1 (fr) | 1999-08-19 |
| KR20010072550A (ko) | 2001-07-31 |
| DE19806471A1 (de) | 1999-08-19 |
| MY133018A (en) | 2007-10-31 |
| PL342451A1 (en) | 2001-06-04 |
| AU2293899A (en) | 1999-08-30 |
| WO1999041200A1 (fr) | 1999-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104118893B (zh) | 一种利用钛白废酸生产工业级硫酸镁方法 | |
| CN110589884B (zh) | 一种废副二氯氧钛回收利用的方法 | |
| AU2001262583B2 (en) | Recovery of titanium dioxide from titanium oxide bearing materials like steelmaking slags | |
| EP0424058A1 (fr) | Procédé de préparation d'oxydes de titane particulaires | |
| CN102515267B (zh) | 高电阻率钛白粉的生产方法 | |
| AU742966B2 (en) | Pure titanium dioxide hydrate and a process for the production thereof | |
| CA1129179A (fr) | Procede industriel d'obtention d'un hydrate du dioxyde de titane ayant une structure particuliere | |
| FI96840C (fi) | Menetelmä titaanidioksidin valmistamiseksi | |
| CN114162861B (zh) | 一种人造金红石母液综合利用方法 | |
| CN113353977B (zh) | 一种利用钛铁矿制备二氧化钛的方法 | |
| US5094834A (en) | Process for the production of tio2 pigments | |
| SU841595A3 (ru) | Способ переработки водной суспензиигидРАТА дВуОКиСи ТиТАНА HA пигМЕНТ | |
| CN110040774B (zh) | 利用偏钛酸制备纳米二氧化钛的方法 | |
| CN112390295A (zh) | 一种人造金红石母液利用方法 | |
| MXPA00008012A (en) | Pure titanium dioxide hydrate and a process for the production thereof | |
| CN114988467A (zh) | 一种低硫高pH二氧化钛及其生产方法 | |
| CN116873977A (zh) | 一种钙化酸浸钒液精制五氧化二钒的方法 | |
| CZ20002953A3 (cs) | Čistý hydrát oxidu titaničitého a způsob jeho výroby | |
| CN119307753B (zh) | 一种白钨矿石处理方法 | |
| SU1393835A1 (ru) | Способ получени пигментного диоксида титана | |
| SU1558457A1 (ru) | Способ получени катализатора дл окислени серосодержащих соединений и выделени серы по процессу Клауса | |
| US4988495A (en) | Process for the recorvery of sulphuric acid in the production of titanium dioxide | |
| SU1673582A1 (ru) | Способ получени зародышей дл производства пигментного диоксида титана | |
| CN111807406A (zh) | 一种废脱硝催化剂回收制备的钛白粉的除杂工艺 | |
| SU643520A1 (ru) | Способ получени пигментной двуокиси титана |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20000911 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE ES FI FR GB IT NL |
|
| AX | Request for extension of the european patent |
Free format text: SI PAYMENT 20000919 |
|
| 17Q | First examination report despatched |
Effective date: 20020422 |
|
| RAX | Requested extension states of the european patent have changed |
Free format text: SI PAYMENT 20000911 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KERR-MCGEE PIGMENTS GMBH |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20060901 |