CN1291168A - Pure titinium dioxide hydrate and a process for production thereof - Google Patents
Pure titinium dioxide hydrate and a process for production thereof Download PDFInfo
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- CN1291168A CN1291168A CN99803046A CN99803046A CN1291168A CN 1291168 A CN1291168 A CN 1291168A CN 99803046 A CN99803046 A CN 99803046A CN 99803046 A CN99803046 A CN 99803046A CN 1291168 A CN1291168 A CN 1291168A
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- titanium dioxide
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- 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
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- 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
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- 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
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- 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
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- 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
Titanium dioxide hydrate which contains less than 250 ppm sulfate ions and less than 50 ppm ammonium or alkali metal ions with respect to Tio2 is obtained by producing an aqueous suspension with sulfate-containing titanium dioxide hydrate with 2 to 18 % by weight, preferably 5 to 15 % by weight solid calculated as Tio2, the sulfate content of the suspension calculated as H2SO4 is determined, 95 to 100.1 mol % of the stoichiometric amount of ammonia or alkali metal hydroxide necessary for the neutralization of the calculated H2SO4 amount is added under stirring, the suspension is filtered after stirring period of 5 to 60 minutes, preferably 10 to 30 minutes, and is washed with low-salt, preferably deionized, water and a diffusion wash with deionized water is carried out at a pressure of 3 to 5 bar is then performed.
Description
The present invention relates to titanium dioxide hydrates, the particularly method of pure titanium dioxide hydrates that a kind of hydrolysate that obtains by the titanyl sulfate hydrolysis is produced protosulfate content.
As everyone knows, in the dilute sulphuric acid of containing metal vitriol, produce a kind of hydrolysate of hydrate of titanium dioxide by titanyl sulfate solution, described solution is by making with vitriol oil boiling titanium material, after removing the dilution heat of sulfuric acid that contains other metal sulfate, still contain the sulfate ion of chemical bonding in the hydrolysate of gained.This hydrolysate is after water or diluted acid thorough washing and reduction (so-called bleaching) processing, still contain sulfate ion (Ullmanns chemical industry technology encyclopedia with respect to the 5-10% of titanium dioxide weight, the 4th edition, 18 volumes (1979), 574-576 page or leaf).
This sulfate ion content all is totally unfavorable for most of purposes of this hydrolysate.When producing titanium dioxide or containing the mixed oxide of titanium dioxide by the calcining of hydrolysate, sulfate ion will particularly at high temperature resolve into sulfurous gas, oxygen G﹠W again with the form cracking of sulfuric acid or sulphur trioxide.
This just requires large-scale gas sweetening measure.In the production of catalyzer, sulfate ion can have a negative impact to activity of such catalysts.Therefore, people have carried out a lot of trials to producing sulfate-free titanium dioxide hydrates.
According to US-A 3 518 053, by using ammonia, ammonium hydroxide or volatile salt are handled a kind of hydrolysate of bleaching and are washed the method for ammonium sulfate off, have made a kind of hydrate of protosulfate content.The hydrate that makes in this way still contains the vitriol of 0.5-2.0%.According to US-A3 518 053, even, still contain the sulphur of 0.3 weight % in the hydrate after the washing, be equivalent to contain the sulfate ion of 0.9 weight % when the ammonium thing being added to the pH value that makes suspension liquid when reaching 8.0.
DE-A 43 21 555 has described a kind of production method that is used as the mixed oxide powder of denitrating catalyst, the steps include: that be between the 4.0-6.0 with alkali lye with the titanium dioxide hydrates suspension liquid of the sulfur-containing anion pH value that partly neutralizes, filter and water thorough washing filter cake.Starting raw material preferably solid content is the suspension liquid of titanium dioxide hydrates of the bleaching of 20-40 weight %.In this way, can produce sulfate radical content and be about 2.5%, and sodium oxide content is the hydrate of 20ppm.
According to US-A 5,527,469, might further reduce sulphate content and keep low sodium oxide content simultaneously.Therefore the hydrate suspension liquid with the sulfur-bearing hydrochlorate mixes with the alkali metal hydroxide or the carbonate of 0.1-2 weight part, stirs 30-60 minute down at 60-120 ℃.
After washing alkali metal compound off, in order from hydrate, to isolate the basic metal of chemical bonding, must be reduced to below 6 with the pH value of organic acid with the hydrate suspension liquid, preferably be reduced to below 4.5.Take off remaining organic acid by calcining to divide.The sulphur that strict titanium dioxide hydrates by this method preparation contains 110-480ppm promptly is equivalent to contain the sulfate ion of 330-1440ppm, and sodium ions content is at most 293ppm simultaneously.
Therefore, although done many trials, unlikely produce sulphate content low alkali and/or the also low titanium dioxide hydrates of ammonium content simultaneously eventually according to this technology.
The purpose of this invention is to provide a kind of simple method of producing titanium dioxide hydrates by the hydrate of bleaching (it is made by the titanyl sulfate solution that contains other metal sulfate and optionally contain free sulfuric acid).
In addition, another object of the present invention provides a kind of pure titanium dioxide hydrates, wherein contains less than the sulfate ion of 250ppm with less than ammonium or the alkalimetal ion of 50ppm with respect to content of titanium dioxide.
Purpose of the present invention can neutralize by the titanium dioxide suspension liquid to 2-18 weight % and reach unexpectedly.
Theme of the present invention is that the titanium dioxide hydrates that made by the titanyl sulfate hydrolysis is produced sulfate radical content less than 100ppm and ammonium or the alkali metal ion content measured method less than the pure titinium dioxide hydrate of 25ppm, it is characterized in that: produce the titanium dioxide solid content and account for 2-18 weight %, be preferably the aqueous suspension of the sulfur-bearing hydrochlorate titanium dioxide hydrates of 5-15 weight %, determine to calculate the sulphate content of this suspension liquid with sulfuric acid content, under stirring action, add the ammonia of 95-101.1 mole % or the sulfuric acid amount that alkali-metal oxyhydroxide is calculated with neutralization then by stoichiometry, stirring 5-60 minute, the preferred stirring after 10-30 minute, filter described suspension liquid, and with the water of lower salt content, preferably use deionized water wash, and under the 3-5 crust, use the deionized water filter cake then.
The hydrate of sulfur-bearing hydrochlorate can obtain such as the raw-material method of titaniums such as ilmenite or titanium slag by decomposing in the vitriol oil usually.The metal sulfate that makes in this way can be dissolved in dilute sulphuric acid or water.Isolate the insoluble solids thing and suitably regulating trivalent titanium ion Ti
3+After the concentration, at 90-110 ℃ and hydrolysis titanyl sulfate under the situation that the hydrolysis center exists is arranged, generate the titanium dioxide hydrates and the sulfuric acid of sulfur-bearing hydrochlorate.By filtering and after thereby the washing filter cake isolates the sulfuric acid of containing metal vitriol, can by in dilute sulphuric acid with the method for reduction (bleaching) or by filter cake being dissolved in the sulfuric acid and the Fe in the method for the hydrolysis removal filter cake again under the situation of trivalent titanium ion existence
3+, Cr
3+, V
3+In the nonferrous heavy metal ion.
The filter cake of this titanium dioxide hydrates, wherein contain sulfate ion with respect to the 5-10% of titanium dioxide weight, it is that method by the hydrolysis titanyl sulfate makes, and it has been represented and has been used to produce the initial feed of pure titinium dioxide hydrate of the present invention and the product of producing by oven dry and calcining.
According to the present invention, the solid content that calculates by titanium dioxide is that the aqueous suspension of 2-18% is preferably produced by the titanium dioxide hydrates filter cake that obtains previously.After the content of the sulfate ion that calculates with sulfuric acid in this suspension liquid is determined, at 20-100 ℃, preferably under 30-80 ℃, press 99.5-100.1 mole %, preferably the stoichiometry by 99.8-100.05 mole % adds ammonium or the sulfate ion of alkali metal hydroxide to neutralize and to be calculated.After 5-60 minute, preferred after 10-30 minute in suspension and hydrate mixing, filter, with 30-100 ℃, preferably use 50-95 ℃ hot water injection.With the water of low saline salinity, preferably use deionized water rinsing.With vacuum filter, preferably with pressure filter be up to 3 the crust situations under filter and wash.If the electric conductivity of filtrate obviously reduces, preferably be reduced to about 300ms/cm, then at 30-100 ℃, the 3-5 crust separates residual sulfuric acid salt by filter cake on pressure filter with no salt solution down.Preferably, be reduced to 100 μ s/cm up to the wash filtrate electric conductivity.If as a preferred strainer, then available 3-5 crust extrudes mother liquor before the beginning filter cake with a film pressure strainer.Preferably, finish after the filter cake, from filter cake, partly separate water outlet with the method for pressure boost.
Using method of the present invention, the filter cake of acquisition contains with respect to titanium dioxide weight usually less than 1% sulfate ion with less than ammonium and the alkalimetal ion of 100ppm.When using preferred ammonium and alkali metal hydroxide content, can obtain pure titanium dioxide hydrates according to the present invention, the not enough 250ppm of sulfate ion content wherein, the not enough 50ppm of while ammonium and alkali metal ion content measured, sulfate ion content is less than 100ppm and the not enough 25ppm of ammonium and alkali metal ion content measured especially, and these all are for content of titanium dioxide.This titanium dioxide hydrates is characterised in that to have king-sized response capacity, zwitterion is had high-absorbility and according to the separation degree to moisture high catalytic activity arranged.
Another theme of the present invention is titanium dioxide and/or the production method that consists of the titanium dioxide hydrates of TiO2 * nH2O (wherein 0≤n≤1), wherein sulfate ion contains quantity not sufficient 250ppm, preferably not enough 100ppm, simultaneously ammonium or alkalimetal ion contains quantity not sufficient 50ppm, preferably not enough 25ppm, these all are for content of titanium dioxide, and titanium dioxide can obtain by oven dry and calcining method in 50-750 ℃ temperature range according to claim 5.
These products can not be produced by common sulfur acid salt compound, because cracking at high temperature at first takes place sulfate ion.
The present invention has enumerated some embodiment, but the invention is not restricted in the cited scope of embodiments.
Embodiment
The titanium dioxide hydrates of containing metal vitriol is technical to be that titanyl sulfate solution hydrolysis by sulfuric acid, containing metal vitriol makes.The method " bleaching " that the filter cake that was rinsed is handled by reduction.The titanium dioxide hydrates of being washed of having bleached mixes with water.The suspension liquid of Huo Deing contains the titanium dioxide hydrates that is calculated as 25-24 weight % by titanium dioxide weight in this way, contains with sulfuric acid the sulfate ion of the 2.14 weight % that are metering.
This suspension liquid is as the starting raw material of all embodiment.
Comparative Examples 1
6240 kilograms of this suspension liquids are mixed with the sodium hydroxide solution of 213 kilogram of 50 weight % under the violent stirring effect.During the amount of sodium hydroxide will be enough to and suspension liquid in vitriolated 97.7 moles of %, like this, after washing sodium sulfate off, the vitriolic residual volume is expected to reach 1950ppm.Add sodium hydroxide after 30 minutes, suspension liquid pumped into a film pressure strainer, filter finish after, with the film pressure devices extrusion mother liquors of 4 crust, and with deionized water rinsing 180 minutes, the electric conductivity of filtrate was reduced to 122 μ s thus.Be suspended in the deionized water filter cake and sampling analysis.Sample contains the sulfuric acid of 3184ppm and the sodium oxide of 266ppm with respect to the amount of titanium dioxide.
Comparative Examples 2
Present embodiment imitation Comparative Examples 1 is carried out, and mother liquor is not extruded fully after just filtration is finished, but washes 30 minutes through the suspension liquid passage with deionized water.Thereafter, only washed 75 minutes by the washing channel pressurization of pressure filter, electric conductivity just is reduced to 97 μ s.After filter cake suspension and homogenizing, contain the sulfuric acid of 2730ppm and the sodium oxide of 28ppm.
Embodiment 1
With the suspension liquid of 4340 kilograms of sulfur-bearing hydrochlorates and 6653 intensification degree is that 80 ℃ deionized water mixes.The suspension liquid that will contain 9.96% the titanium dioxide hydrates that calculates with titanium dioxide weight mixes with 213 kilogram 50% sodium hydroxide solution under violent stirring, and the amount of sodium hydroxide will be enough to the vitriolated 97.7 moles of % that neutralize.After 30 minutes, suspension liquid is pumped into a film pressure strainer, when filtering about 20 minutes, pressure is elevated to 2.5 crust.Then, be to wash 15 minutes through the suspension liquid passage under 2.5 crust at hydraulic pressure, the electric conductivity of wash filtrate drops to 291 μ s/cm thus.Earlier with the film pressure press cakes of 5 crust, again under the hydraulic pressure of 5 crust via washing passage deionized water wash filter cake, be 81 μ s/cm up to the electric conductivity of wash filtrate.Separate filter cake and it is suspended in the deionized water.This uniform titanium dioxide suspension liquid contains with respect to the sulfate ion of the 2030ppm of content of titanium dioxide and the sodium ion of 5ppm.
Embodiment 2
The suspension liquid of 4340 kilograms of sulfur-bearing hydrochlorates mixed with 4550 liters of deionized waters (content of titanium dioxide is in the suspension liquid: 12.3 weight %).Under intensively stirred effect, contain ammonia (NH with 335 liters
3) heavy content is that 10% ammonia soln is added in the above-mentioned suspension liquid, the amount of ammoniacal liquor is enough to the vitriolated 99.5 moles of % of neutralization.Stir after 20 minutes, copy 1 pair of suspension liquid of embodiment to filter and wash.When reaching 72 μ s/cm, the electric conductivity of wash filtrate stops filter cake.It is the sulfate ion of 217ppm that the homogeneous titanium dioxide filter cake that suspends contains with respect to content of titanium dioxide, and ammonium ion can't detect.
Embodiment 3
The suspension liquid of 4340 kilograms of sulfur-bearing hydrochlorates is mixed with 6500 liters of deionized waters, and mix with the sodium hydroxide solution of 705 liter of 10 weight % under violent stirring in 80 ℃, the content of sodium hydroxide will be enough to the vitriolated 99.95 moles of % of neutralization.Copy embodiment 1 to filter and washing leaching cake.When reaching 64 μ s/cm, the electric conductivity of wash filtrate just finishes filter cake.The titanium dioxide hydrates suspension liquid of homogeneous contains the sulfate ion less than 50ppm, and less than the sodium ion of 16ppm, both all are for the amount of titanium dioxide.
Embodiment 4
After copying embodiment 3 that the suspension liquid of sulfur-bearing hydrochlorate is mixed, the sodium hydroxide with 706 liter of 10 weight % mixes again, the amount of the sodium hydroxide vitriolated 100.1 moles of % that can neutralize.Copying embodiment 1 to filter and the washing filter cake, is 83 μ s/cm up to filter wash speed.In the titanium dioxide hydrates suspension liquid of homogeneous, detect less than vitriol, illustrate that sulfate ion content with respect to content of titanium dioxide is less than 50ppm.Sodium ions content is 86ppm with respect to content of titanium dioxide.
Claims (7)
1, a kind of titanium dioxide hydrates that is made by the titanyl sulfate hydrolysis is produced sulfate radical content less than 100ppm and ammonium or the alkali metal ion content measured method less than the pure titinium dioxide hydrate of 25ppm, it is characterized in that: producing the titanium dioxide solid content is 2-18 weight %, be preferably the aqueous suspension of the sulfur-bearing hydrochlorate titanium dioxide hydrates of 5-15 weight %, determine sulphate content with this suspension liquid of sulfuric acid content calculating, under stirring action, add the ammonia of 95-101.1 mole % or the sulfuric acid amount that alkali-metal oxyhydroxide is calculated with neutralization then by stoichiometry, stirring 5-60 minute, the preferred stirring after 10-30 minute, filter described suspension liquid, and with the water of lower salt content, preferably use deionized water wash, and under the 3-5 crust, use the deionized water filter cake then.
2, method according to claim 1, it is characterized in that: ammonium or alkali metal hydroxide by stoichiometric 99.5-100.1 mole %, are preferably the sulfuric acid amount that is calculated with neutralization in the aqueous suspension of titanium dioxide hydrates that 99.8-100.05 mole % joins the sulfur-bearing hydrochlorate.
3, according to the described method of one of claim 1-2, it is characterized in that: water flush cake under 3 crust is reduced to 300ms/cm up to the electric conductivity of wash filtrate.
4, according to one or more described method of claim 1-3, it is characterized in that: under 3-5 crust, carry out filter cake, be reduced to 100 μ s/cm up to the electric conductivity of wash filtrate.
5, the titanium dioxide hydrates that makes according to the method for claim 1, it contains with respect to content of titanium dioxide less than the sulfate ion of 250ppm with less than ammonium or the alkalimetal ion of 50ppm.
6, titanium dioxide hydrates according to claim 5 is characterized in that: it contains with respect to content of titanium dioxide less than the sulfate ion of 100ppm with less than ammonium or the alkalimetal ion of 50ppm.
7, titanium dioxide that in 50-750 ℃ temperature range, obtains by the titanium dioxide hydrates of claim 5 and/or the titanium dioxide hydrates that consists of TiO2 * nH2O (wherein 0≤n≤1) by oven dry and calcining method, wherein sulfate ion contains quantity not sufficient 250ppm, preferred not enough 100ppm, simultaneously ammonium and alkalimetal ion contains quantity not sufficient 50ppm, preferred not enough 25ppm, these all are for content of titanium dioxide.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19806471.3 | 1998-02-17 | ||
| DE19806471A DE19806471A1 (en) | 1998-02-17 | 1998-02-17 | Pure titanium dioxide hydrate and process for its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1291168A true CN1291168A (en) | 2001-04-11 |
Family
ID=7857971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99803046A Pending CN1291168A (en) | 1998-02-17 | 1999-02-16 | Pure titinium dioxide hydrate and a process for production thereof |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP1060127A1 (en) |
| JP (1) | JP2002503620A (en) |
| KR (1) | KR20010072550A (en) |
| CN (1) | CN1291168A (en) |
| AU (1) | AU742966B2 (en) |
| BR (1) | BR9908003A (en) |
| CA (1) | CA2321250A1 (en) |
| DE (1) | DE19806471A1 (en) |
| MY (1) | MY133018A (en) |
| NO (1) | NO20004103L (en) |
| PL (1) | PL342451A1 (en) |
| WO (1) | WO1999041200A1 (en) |
| ZA (1) | ZA991226B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111913353A (en) * | 2014-12-26 | 2020-11-10 | 太阳油墨制造株式会社 | Curable resin composition, dry film, cured product, and printed wiring board |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047012A (en) * | 2000-07-31 | 2002-02-12 | Sumitomo Chem Co Ltd | Method of manufacturing titanium oxide |
| EP1614659A3 (en) * | 2000-07-31 | 2008-05-14 | Sumitomo Chemical Company, Limited | Titanium oxide production process |
| MXPA04001404A (en) | 2001-08-22 | 2004-05-27 | Shell Int Research | Purification of titania. |
| CN1298790C (en) | 2002-08-07 | 2007-02-07 | 石原产业株式会社 | Titanium dioxide pigment, its preparation and resin composition using the same |
| DE10303287A1 (en) * | 2003-01-28 | 2004-07-29 | Sachtleben Chemie Gmbh | Improving filter cake neutralization in titanium dioxide production by sulfate process, involves using a basic-reacting solution or suspension in the membrane chamber filter press |
| DE102004020213A1 (en) * | 2004-04-22 | 2005-11-24 | Kerr-Mcgee Pigments Gmbh | Composition for chemical mechanical polishing (CMP) |
| JP6286395B2 (en) * | 2015-08-05 | 2018-02-28 | 太陽インキ製造株式会社 | Curable resin composition, dry film, cured product and printed wiring board |
| DE102016110374A1 (en) * | 2016-06-06 | 2017-12-07 | Huntsman P&A Germany Gmbh | Titanium dioxide sol, process for its preparation and products derived therefrom |
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 (en) * | 1974-05-17 | 1978-09-07 | Bayer Antwerpen N.V., Antwerpen (Belgien) | Process for the preparation of aqueous titanium dioxide hydrate suspensions by pressure filtration |
-
1998
- 1998-02-17 DE DE19806471A patent/DE19806471A1/en not_active Ceased
-
1999
- 1999-02-12 MY MYPI99000511A patent/MY133018A/en unknown
- 1999-02-16 CN CN99803046A patent/CN1291168A/en active Pending
- 1999-02-16 BR BR9908003-6A patent/BR9908003A/en not_active IP Right Cessation
- 1999-02-16 EP EP99902739A patent/EP1060127A1/en not_active Withdrawn
- 1999-02-16 WO PCT/IB1999/000272 patent/WO1999041200A1/en not_active Application Discontinuation
- 1999-02-16 JP JP2000531403A patent/JP2002503620A/en active Pending
- 1999-02-16 ZA ZA9901226A patent/ZA991226B/en unknown
- 1999-02-16 AU AU22938/99A patent/AU742966B2/en not_active Ceased
- 1999-02-16 PL PL99342451A patent/PL342451A1/en unknown
- 1999-02-16 KR KR1020007009010A patent/KR20010072550A/en not_active Application Discontinuation
- 1999-02-16 CA CA002321250A patent/CA2321250A1/en not_active Abandoned
-
2000
- 2000-08-16 NO NO20004103A patent/NO20004103L/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111913353A (en) * | 2014-12-26 | 2020-11-10 | 太阳油墨制造株式会社 | Curable resin composition, dry film, cured product, and printed wiring board |
| CN111913354A (en) * | 2014-12-26 | 2020-11-10 | 太阳油墨制造株式会社 | Curable resin composition, dry film, cured product, and printed wiring board |
Also Published As
| Publication number | Publication date |
|---|---|
| MY133018A (en) | 2007-10-31 |
| ZA991226B (en) | 2000-08-16 |
| NO20004103L (en) | 2000-10-16 |
| AU2293899A (en) | 1999-08-30 |
| EP1060127A1 (en) | 2000-12-20 |
| CA2321250A1 (en) | 1999-08-19 |
| AU742966B2 (en) | 2002-01-17 |
| BR9908003A (en) | 2001-11-06 |
| PL342451A1 (en) | 2001-06-04 |
| NO20004103D0 (en) | 2000-08-16 |
| JP2002503620A (en) | 2002-02-05 |
| DE19806471A1 (en) | 1999-08-19 |
| KR20010072550A (en) | 2001-07-31 |
| WO1999041200A1 (en) | 1999-08-19 |
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