WO2012039730A1 - Tungsten containing inorganic particles with improved photostability - Google Patents
Tungsten containing inorganic particles with improved photostability Download PDFInfo
- Publication number
- WO2012039730A1 WO2012039730A1 PCT/US2010/055913 US2010055913W WO2012039730A1 WO 2012039730 A1 WO2012039730 A1 WO 2012039730A1 US 2010055913 W US2010055913 W US 2010055913W WO 2012039730 A1 WO2012039730 A1 WO 2012039730A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- particles
- typically
- titanium dioxide
- tungsten
- inorganic
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/006—Alkaline earth titanates
-
- 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
- C01G23/07—Producing by vapour phase processes, e.g. halide oxidation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/04—Compounds of zinc
- C09C1/043—Zinc oxide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/30—Three-dimensional structures
- C01P2002/34—Three-dimensional structures perovskite-type (ABO3)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
- C01P2002/54—Solid solutions containing elements as dopants one element only
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- 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
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/62—L* (lightness axis)
-
- 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
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/63—Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
-
- 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
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/64—Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)
Definitions
- the present disclosure relates to a process for preparing inorganic particles, typically titanium dioxide, and in particular to the preparation of inorganic particles, typically titanium dioxide comprising tungsten and alumina.
- Titanium dioxide pigments are prepared using either the chloride process or the sulfate process.
- titanium tetrachloride, TiCI 4 is reacted with an oxygen containing gas at temperatures ranging from about 900 °C to about 1600 °C, the resulting hot gaseous suspension of T1O 2 particles and free chlorine is discharged from the reactor and must be quickly cooled below about 600 °C, for example, by passing it through a conduit, i.e., flue, where growth of the titanium dioxide pigment particles and agglomeration of said particles takes place.
- One method of adding elements to the surface of a particle is by impregnation with a solution containing the element. This is difficult to do with pyrogenically prepared metal oxide particles since the properties of the pyrogenically produced metal oxides change upon contact with a liquid medium.
- the disclosure provides inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide (T1O2) particles, comprising at least about 0.002 % of tungsten, more typically at least about 0.004 % of tungsten and still more typically at least about 0.01 % of tungsten, and most typically at least about 0.05 % of tungsten, based on the total weight of the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles, wherein the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles, have a photostability ratio (PSR) of at least about 2, more typically at least about 4, and still more typically at least 10, as measured by the Ag + photoreduction rate, and color as depicted by an L * of at least about 97.0, more typically at least about 98, and most typically at least about 99.0, and b * of less than about 4, and more typically less than about 3.
- PSR photostability ratio
- the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles, comprising tungsten may further comprise alumina in the amount of about 0.06 to about 5 % of alumina, more typically about 0.2 % to about 4 % of alumina, still more typically about 0.5 % to about 3 % of alumina, and most typically about 0.8 % to about 2 %, based on the total weight of the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles.
- Photostability Ratio is defined as the Ag + photoreduction rate of the T1O2 particle without tungsten divided by the Ag + photoreduction rate of the TiO 2 particle with tungsten.
- the disclosure provides a process for producing titanium dioxide particles comprising: a) mixing of chlorides of titanium, tungsten or mixtures thereof; wherein at least one of the chlorides is in the vapor phase;
- 0.002 % of tungsten more typically at least about 0.004 % of tungsten and still more typically at least about 0.01 % of tungsten, and most typically at least about 0.05 % of tungsten, based on the total weight of the titanium dioxide particles, wherein the titanium dioxide particles have a photostability ratio (PSR) of at least about 2, more typically at least about 4, and still more typically at least 10, as measured by the Ag +
- PSR photostability ratio
- the titanium dioxide particles comprising tungsten further comprise alumina in the amount of about 0.06 to about 5 % of alumina, more typically about 0.2 % to about 4 % of alumina, still more typically about 0.5 % to about 3 % of alumina, and most typically about 0.8 % to about 2 %, based on the total weight of the titanium dioxide particles.
- FIG. 1 is a schematic illustration showing the process for preparing titanium dioxide (TiO 2 ).
- This disclosure relates to inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles, wherein the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles comprise at least about 0.002 % of tungsten, more typically at least about 0.004 % of tungsten and still more typically at least about 0.01 % of tungsten, and most typically at least about 0.05 % of tungsten, based on the total weight of the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles, wherein the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles have a photostability ratio (PSR) of at least about 2, more typically at least about 4, and still more typically at least about 10, as measured by the Ag + photoreduction rate, and color as depicted by L * a * b * , with L * of at least about 97.0, more typically at least about 98, and most typically at least about 99.0,
- the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles comprising tungsten may further comprise alumina in the amount of about 0.06 to about 5 % of alumina, more typically about 0.2 % to about 4 % of alumina, still more typically about 0.5 % to about 3 % of alumina, and most typically about 0.8 % to about 2 %, based on the total weight of the inorganic particles, typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide particles.
- the alumina is co-ox alumina applied as described in US2,559,638.
- This disclosure also relates to a process for preparing a treated inorganic particle, typically a titanium dioxide particle, to form a particle having improved photostability without any color change associated with the treatment and that is capable of being dispersed into a coating composition, a polymer melt for preparing a plastic part or a laminate.
- the treated particle may be present in the amount of about 10 to 30 weight percent in coating compositions, 0.01 to 20 weight % in plastics final products.
- inorganic particle an inorganic particulate material that becomes dispersed throughout a final product such as a polymer melt or coating or laminate composition and imparts color and opacity to it.
- inorganic particles include but are not limited to ZnO, TiO 2 , or SrTiO 3 .
- titanium dioxide is an especially useful particle in the processes and products of this disclosure. Titanium dioxide (TiO 2 ) particles useful in the present disclosure may be in the rutile or anatase crystalline form. They are commonly made by either a chloride process or a sulfate process.
- TiCI 4 is oxidized to TiO 2 particles.
- sulfuric acid and ore containing titanium are dissolved, and the resulting solution goes through a series of steps to yield TiO 2 .
- Both the sulfate and chloride processes are described in greater detail in "The Pigment Handbook", Vol. 1 , 2nd Ed., John Wiley & Sons, NY (1988), the teachings of which are incorporated herein by reference.
- the particle may be a pigment or nanoparticle.
- titanium dioxide particles have an average size of less than 1 micron. Typically, the particles have an average size of from about 0.020 to about 0.95 microns, more typically, about 0.050 to about 0.75 microns and most typically about 0.075 to about 0.50 microns.
- nanoparticle it is meant that the primary titanium dioxide particles typically have an average particle size diameter of less than about 100 nanometers (nm) as determined by dynamic light scattering that measures the particle size distribution of particles in liquid suspension. The particles are typically agglomerates that may range from about 3 nm to about 6000 nm.
- the titanium dioxide particle can be substantially pure titanium dioxide or can contain other metal oxides, such as alumina. Other metal oxides may become incorporated into the particles, for example, by co- oxidizing, post-oxidizing or co-precipitating titanium compounds with other metal compounds or precipitating other metal compounds on to the surface of the titanium dioxide particles. These are typically hydrous metal oxides. If co-oxidized, post-oxidized, precipitated or co-precipitated the amount of the metal oxide is about 0.06 to about 5 %, more typically about 0.2 % to about 4%, still more typically about 0.5 % to about 3 %, and most typically about 0.8 % to about 2 %, based on the total weight of the titanium dioxide particles.
- Tungsten may also be introduced into the particle using co-oxidizing, or post-oxidizing. If co-oxidized or post-oxidized at least about 0.002 wt. % of the tungsten, more typically, at least about 0.004 wt. %, still more typically at least about 0.01 wt.% tungsten, and most typically at least about 0.05 wt. % may be present, based on the total particle weight.
- the process for producing titanium dioxide particle comprises: a) mixing of chlorides of, titanium, tungsten or mixtures thereof; wherein at least one of the chlorides is in the vapor phase;
- titanium dioxide (T1O2) particles comprising at least about 0.002 % of tungsten, more typically at least about 0.004 % of tungsten and still more typically at least about 0.01 % of tungsten, and most typically at least about 0.05 % of tungsten, based on the total weight of the titanium dioxide particles, wherein the titanium dioxide particles have a photostability ratio (PSR) of at least 2, more typically at least 4, and still more typically at least 10, as measured by the Ag + photoreduction rate, and color as depicted by an L* of at least about 97.0, more typically at least about 98, and most typically at least about 99.0, and b* of less than about 4, and more typically less than about 3.
- PSR photostability ratio
- the titanium dioxide particles comprising tungsten further comprise alumina in the amount of about 0.06 to about 5 % of alumina, more typically about 0.2 % to about 4 % of alumina, still more typically about 0.5 % to about 3 % of alumina, and most typically about 0.8 % to about 2 %, based on the total weight of the titanium dioxide particles.
- tungsten may be added to the titanium dioxide particle from an alloy comprising tungsten.
- the alloy 1 1 and chlorine 12 are added to the generator 10. This reaction can occur in fluidized beds, spouting beds, packed beds, or plug flow reactors.
- the inert generator bed may comprise materials such as silica sand, glass beads, ceramic beads, T1O2 particles, or other inert mineral sands.
- the alloy comprising aluminum, titanium or mixtures thereof and tungsten, 1 1 reacts in the generator 10 according to the following equations:
- the heat of reaction from the chlorination of the aluminum or titanium metal helps provide sufficient heat to drive the kinetics of the reaction between chlorine and one or more of the other elements.
- Titanium tetrachloride 17 may be present during this reaction to absorb the heat of reaction.
- the chlorides formed in-situ comprise chlorides of the tungsten and chlorides of aluminum such as aluminum trichloride, chlorides of titanium such as titanium tetrachloride or mixtures thereof.
- the temperature of the reaction of chlorine with the alloy should be below the melting point of the alloy but sufficiently high enough for the rate of reaction with chlorine to provide the required amount of chlorides to be mixed with the TiCI .
- Typical amounts of chlorine used in step (a) are about 0.4 % to about 20 %, more typically about 2 % to about 5 %, by weight, based on the total amount of all reactants.
- Typical amounts of titanium tetrachloride are about 75 % to about 99.5 % added in step (a) and (b), and more typically about 93 % to about 98 %, by weight, based on the total amount of all reactants.
- the reaction of chlorine with the alloy occurs at temperature of above 190°C, more typically at temperature of about 250 °C to about 650 °C , and most typically at temperatures of about 300 °C to about 500 °C.
- the chlorides formed in the in-situ step 13 flows into an oxidation reactor 14 and titanium tetrachloride 15 is then added to the chlorides, such that titanium tetrachloride is present in a major amount.
- Vapor phase oxidation of the chlorides from step (a) and titanium tetrachloride is by a process similar to that disclosed, for example, in U.S. Pat. Nos. 2,488,439, 2,488,440, 2,559,638, 2,833,627, 3,208,866, 3,505,091 , and 7,476,378.
- the reaction may occur in the presence of neucleating salts such as
- Such reaction usually takes place in a pipe or conduit, wherein oxygen 16, titanium tetrachloride 15 and the in-situ fomned chlorides comprising chlorides of tungsten and chlorides of aluminum such as aluminum trichloride, chlorides of titanium such as titanium tetrachloride or mixtures thereof 13 are introduced at a suitable temperature and pressure for production of the treated titanium dioxide.
- a flame is generally produced.
- the treated titanium dioxide produced Downstream from the flame, the treated titanium dioxide produced is fed through an additional length of conduit wherein cooling takes place.
- conduit For the purposes herein, such conduit will be referred to as the flue.
- the flue should be as bng as necessary to accomplish the desired cooling.
- the flue is water cooled and can be about 50 feet (15.24 m) to about 3000 feet (914.4 m), typically about 100 feet (30.48 m) to about 1500 feet (457.2 m), and most typically about 200 feet (60.96 m) to 1200 feet (365.76 m) long.
- the treated inorganic particles typically inorganic metal oxide or mixed metal oxide particles, more typically titanium dioxide may be used in coating compositions such as paints, plastic parts such as shaped articles or films, or paper laminates.
- coating compositions such as paints, plastic parts such as shaped articles or films, or paper laminates.
- the paper laminates of this disclosure are useful as flooring, furniture, countertops, artificial wood surface, and artificial stone surface.
- Photostability ratio is the rate of photoreduction of Ag+ by T1O2 particles without tungsten (control samples) divided by the rate of photoreduction of Ag+ by the otherwise same TiO 2 particles comprising tungsten.
- the rate of photoreduction of Ag+ can be determined by various methods. A convenient method was to suspend the ⁇ 2 particles in 0.1 M AgNO3 aqueous solution at a fixed ratio of ⁇ 2 to solution, typically 1 :1 by weight. The suspended particles were exposed to UV light at about 0.2 mW./cm 2 intensity. The reflectance of visible light by the suspension of T1O2 particles was monitored versus time. The reflectance decreased from the initial value to smaller values as silver metal was formed by the photoreduction reaction, Ag + -> Ag°. The rate of reflectance decrease versus time was measured from the initial reflectance ( 100% visible reflectance with no UV light exposure) to a reflectance of 90 % after UV exposure; that rate was defined as the rate of Ag + photoreduction.
- Titanium dioxide made by the chloride process comprising 1 .23 % alumina by weight and having an L*a*b* color index of (99.98, 0.60, 2.13) and a rate of Ag + photoreduction of 0.0528 sec "1 was fired under flowing oxygen at 4 °C/min to 1000 °C and held at temperature for 3 hours;
- Titanium dioxide made by the chloride process comprising 0.06 % alumina by weight and having an L*a*b* color index of (99.43, -0.58, 1 .36) and a photoactivity rate of 0.3322 was fired under flowing oxygen at 4 °C/min to 1000 °C and held at temperature for 3 hours; furnace cooled to 750 °C and held at temperature for 1 hour; furnace cooled to 500°C and held at temperature for 3 hours; furnace cooled to 250 °C and held at temperature for 3 hours; and finally furnace cooled to room temperature. After firing the sample had an L * a * b * color index of (97.71 , -0.03, 1 .89) and a photoactivity rate of 0.2229 sec "1 .
- Titanium dioxide similar to that described in Comparative Example 1 was well mixed with various amounts of ammonium tungstate,
- Titanium dioxide similar to that described in Comparative Example 1 was impregnated via incipient wetness with various amounts of ammonium tungstate, (NH 4 ) 10 W 12 O i -5H 2 O, to give samples having the W contents listed below. These samples were fired as described in
- Titanium dioxide similar to that described in Comparative Example 2 was well mixed with amounts of ammonium tungstate,
- Titanium dioxide similar to that described in Comparative Example 1 was well mixed with various amounts of ammonium molybdate,
- Titanium dioxide similar to that described in Comparative Example 1 was impregnated via incipient wetness with various amounts of ammonium molybdate, ( ⁇ ) 6 ⁇ 7 ⁇ 24 -4 ⁇ 2 ⁇ , to give samples having Mo to Al atomic ratios of 0.1 , 0.5, and 1 .0 versus 0.0 for the undoped control. These samples were fired as described in Comparative Example 1 . After firing the samples had L * a * b * color and photostability ratios as given in the following table:
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/505,466 US20120216717A1 (en) | 2010-09-21 | 2010-11-09 | Tungsten containing inorganic particles with improved photostability |
CN2010800496933A CN102686516A (en) | 2010-09-21 | 2010-11-09 | Tungsten containing inorganic particles with improved photostability |
AU2010361148A AU2010361148A1 (en) | 2010-09-21 | 2010-11-09 | Tungsten containing inorganic particles with improved photostability |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38485610P | 2010-09-21 | 2010-09-21 | |
US61/384,856 | 2010-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012039730A1 true WO2012039730A1 (en) | 2012-03-29 |
Family
ID=43446396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/055913 WO2012039730A1 (en) | 2010-09-21 | 2010-11-09 | Tungsten containing inorganic particles with improved photostability |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120216717A1 (en) |
CN (1) | CN102686516A (en) |
AU (1) | AU2010361148A1 (en) |
WO (1) | WO2012039730A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014078043A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Laminates prepared from décor paper comprising self-dispersing pigments |
WO2014078040A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Process for preparing self-dispersing pigments |
WO2014078039A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Self-dispersing pigments |
WO2014078041A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Décor paper comprising self-dispersing pigments |
JP2020053972A (en) * | 2014-02-25 | 2020-04-02 | インターデジタル ヴイシー ホールディングス, インコーポレイテッド | Method and apparatus for generating bitstream relative to image/video signal, and method and apparatus for obtaining specific information |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012039729A1 (en) * | 2010-09-21 | 2012-03-29 | E. I. Du Pont De Nemours And Company | Paper laminates comprising tungsten treated titanium dioxide having improved photostability |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2488439A (en) | 1946-03-09 | 1949-11-15 | Du Pont | Production of titanium oxide pigments |
US2488440A (en) | 1946-11-30 | 1949-11-15 | Du Pont | Titanium dioxide pigment production |
US2559638A (en) | 1947-07-25 | 1951-07-10 | Du Pont | Production of titanium dioxide |
US2833627A (en) | 1956-01-03 | 1958-05-06 | Du Pont | Method for cooling the hot, gas-containing reaction products resulting from the oxidation of titanium tetrachloride |
US3208866A (en) | 1963-07-15 | 1965-09-28 | Du Pont | Tio2 manufacture |
US3505091A (en) | 1968-07-29 | 1970-04-07 | Du Pont | Production of titanium dioxide pigments |
DE19650500A1 (en) * | 1996-12-05 | 1998-06-10 | Degussa | Doped, pyrogenic oxides |
WO2005113442A1 (en) * | 2004-05-21 | 2005-12-01 | Degussa Ag | Ternary metal mixed oxide powder |
US20060263291A1 (en) * | 2004-11-23 | 2006-11-23 | Carmine Torardi | Mesoporous amorphous oxide of titanium |
US20070175365A1 (en) * | 2006-01-30 | 2007-08-02 | Kronos International Inc. | Titanium dioxide pigment particles with doped, dense SiO2 skin and methods for their manufacture |
US20070298059A1 (en) * | 2006-06-23 | 2007-12-27 | Peter Tiedemann | Method for Identification and Verification of Products Containing Titanium Dioxide Pigment Particles |
US7476378B2 (en) | 2005-10-27 | 2009-01-13 | E.I. Dupont Denemours & Company | Process for producing titanium dioxide |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB760644A (en) * | 1954-08-04 | 1956-11-07 | Du Pont | Improvements in method of preparing titanium dioxide |
DE10115570B4 (en) * | 2001-03-28 | 2005-09-08 | Technocell Dekor Gmbh & Co. Kg | Decorative paper with improved opacity |
US7449245B2 (en) * | 2002-07-09 | 2008-11-11 | Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige Gmbh | Substrates comprising a photocatalytic TiO2 layer |
DE10236366A1 (en) * | 2002-08-08 | 2004-02-19 | Kronos International, Inc. | Process for the surface treatment of a titanium dioxide pigment |
EP1812348A4 (en) * | 2004-10-14 | 2009-12-23 | Tokusen U S A Inc | Method for synthesizing nano-sized titanium dioxide particles |
WO2008036176A1 (en) * | 2006-09-21 | 2008-03-27 | Tokusen U.S.A., Inc. | Low temperature process for producing nano-sized titanium dioxide particles |
US8143185B2 (en) * | 2007-03-26 | 2012-03-27 | Board Of Regents, The University Of Texas System | Photocatalytic deposition of metals and compositions comprising the same |
-
2010
- 2010-11-09 CN CN2010800496933A patent/CN102686516A/en active Pending
- 2010-11-09 AU AU2010361148A patent/AU2010361148A1/en not_active Abandoned
- 2010-11-09 US US13/505,466 patent/US20120216717A1/en not_active Abandoned
- 2010-11-09 WO PCT/US2010/055913 patent/WO2012039730A1/en active Application Filing
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2488439A (en) | 1946-03-09 | 1949-11-15 | Du Pont | Production of titanium oxide pigments |
US2488440A (en) | 1946-11-30 | 1949-11-15 | Du Pont | Titanium dioxide pigment production |
US2559638A (en) | 1947-07-25 | 1951-07-10 | Du Pont | Production of titanium dioxide |
US2833627A (en) | 1956-01-03 | 1958-05-06 | Du Pont | Method for cooling the hot, gas-containing reaction products resulting from the oxidation of titanium tetrachloride |
US3208866A (en) | 1963-07-15 | 1965-09-28 | Du Pont | Tio2 manufacture |
US3505091A (en) | 1968-07-29 | 1970-04-07 | Du Pont | Production of titanium dioxide pigments |
DE19650500A1 (en) * | 1996-12-05 | 1998-06-10 | Degussa | Doped, pyrogenic oxides |
WO2005113442A1 (en) * | 2004-05-21 | 2005-12-01 | Degussa Ag | Ternary metal mixed oxide powder |
US20060263291A1 (en) * | 2004-11-23 | 2006-11-23 | Carmine Torardi | Mesoporous amorphous oxide of titanium |
US7476378B2 (en) | 2005-10-27 | 2009-01-13 | E.I. Dupont Denemours & Company | Process for producing titanium dioxide |
US20070175365A1 (en) * | 2006-01-30 | 2007-08-02 | Kronos International Inc. | Titanium dioxide pigment particles with doped, dense SiO2 skin and methods for their manufacture |
US20070298059A1 (en) * | 2006-06-23 | 2007-12-27 | Peter Tiedemann | Method for Identification and Verification of Products Containing Titanium Dioxide Pigment Particles |
Non-Patent Citations (1)
Title |
---|
"The Pigment Handbook", vol. 1, 1988, JOHN WILEY & SONS |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014078043A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Laminates prepared from décor paper comprising self-dispersing pigments |
WO2014078040A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Process for preparing self-dispersing pigments |
WO2014078039A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Self-dispersing pigments |
WO2014078041A1 (en) | 2012-11-13 | 2014-05-22 | E. I. Du Pont De Nemours And Company | Décor paper comprising self-dispersing pigments |
US9546450B2 (en) | 2012-11-13 | 2017-01-17 | The Chemours Company Tt, Llc | Laminates prepared from decor paper comprising self-dispersing pigments |
US9551112B2 (en) | 2012-11-13 | 2017-01-24 | The Chemours Company Tt, Llc | Decor paper comprising self-dispersing pigments |
US9701842B2 (en) | 2012-11-13 | 2017-07-11 | The Chemours Company Tt, Llc | Process for preparing self-dispersing pigments |
JP2020053972A (en) * | 2014-02-25 | 2020-04-02 | インターデジタル ヴイシー ホールディングス, インコーポレイテッド | Method and apparatus for generating bitstream relative to image/video signal, and method and apparatus for obtaining specific information |
JP7058632B2 (en) | 2014-02-25 | 2022-04-22 | インターデジタル ヴイシー ホールディングス, インコーポレイテッド | A method and device for generating a bitstream related to an image / video signal, and a method and device for acquiring specific information. |
Also Published As
Publication number | Publication date |
---|---|
AU2010361148A1 (en) | 2012-05-24 |
CN102686516A (en) | 2012-09-19 |
US20120216717A1 (en) | 2012-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5922120A (en) | Process for producing coated TiO2 pigment using cooxidation to provide hydrous oxide coatings | |
AU2002245197B2 (en) | Methods of producing substantially anatase-free titanium dioxide with silicon halide addition | |
US20120216717A1 (en) | Tungsten containing inorganic particles with improved photostability | |
JP2005289798A (en) | Manufacturing process for titanium dioxide nanopowder | |
JP5849944B2 (en) | Composite particles and method for producing the same | |
AU2002245197A1 (en) | Methods of producing substantially anatase-free titanium dioxide with silicon halide addition | |
EP1945570A2 (en) | Process for producing titanium dioxide | |
Grzmil et al. | Preparation and characterization of single-modified TiO2 for pigmentary applications | |
AU737000B2 (en) | Method for making a photodurable aqueous titanium dioxide pigment slurry | |
EP2771409A1 (en) | Treated inorganic core particles having improved dispersability | |
Pfaff | Titanium dioxide pigments | |
US5728205A (en) | Process for the addition of boron in a TiO2 manufacturing process | |
JP2010509163A (en) | Method for producing titanium dioxide particles with reduced chloride | |
US20120216711A1 (en) | Coating composition comprising tungsten treated titanium dioxide having improved photostability | |
EP2663525B1 (en) | Process for controlling particle size and silica coverage in the preparation of titanium dioxide | |
US20120219743A1 (en) | Polymer composition comprising tungsten treated titanium dioxide having improved photostability | |
EP4183747A1 (en) | Titanium dioxide material with improved photostability | |
Sotiriou et al. | Hermetically Coated Nanosilver: No Ag+ Ion Leaching | |
MXPA99005409A (en) | A PROCESS FOR THE ADDITION OF BORON IN A TiO2 | |
MXPA00006224A (en) | Process for producing coated tio2 pigment using cooxidation to provide hydrous oxide coatings |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080049693.3 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010361148 Country of ref document: AU Ref document number: 13505466 Country of ref document: US Ref document number: 3856/DELNP/2012 Country of ref document: IN Ref document number: 2010782475 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10782475 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2010361148 Country of ref document: AU Date of ref document: 20101109 Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |