WO1995023193A1 - ORGANOSILICON TREATMENT OF TiO2 PIGMENT BEARING A COATING WITH FLUORIDE IONS - Google Patents
ORGANOSILICON TREATMENT OF TiO2 PIGMENT BEARING A COATING WITH FLUORIDE IONS Download PDFInfo
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- WO1995023193A1 WO1995023193A1 PCT/US1995/002812 US9502812W WO9523193A1 WO 1995023193 A1 WO1995023193 A1 WO 1995023193A1 US 9502812 W US9502812 W US 9502812W WO 9523193 A1 WO9523193 A1 WO 9523193A1
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- WIPO (PCT)
- Prior art keywords
- pigment
- organosilicon compound
- tiθ2
- coated
- fluoride ions
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/035—Coloring agents, e.g. pigments
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- 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
- C09C1/3692—Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684
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- 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
- C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
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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
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
- Y10T428/2995—Silane, siloxane or silicone coating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2998—Coated including synthetic resin or polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/8305—Miscellaneous [e.g., treated surfaces, etc.]
Definitions
- This invention relates to organosilicon treatment of T _>2 particles coated with alumina or alumina-silica having a fluoride compound or fluoride ions associated with them. More particularly, it relates to the improvement in properties such as photostability and humidity resistance of the coated ⁇ O2 particles by the addition of an organosilicon compound.
- Japanese Patent Application No. SHO 57-163604 discloses a toner composition containing Ti ⁇ 2 treated with hexyltrimethoxysilane or octyltrimethoxysilane in a toner matrix containing colorant and a fixing component. Therein, the toner exhibits enhanced developing properties, storage properties and longer service life by improving the fluidity of the toner. No mention is made of ⁇ O2 particles coated with fluoride densified alumina. Further, no mention is made on improving photostability or improving optical properties.
- U. S. Patent 4,460,655 discloses a pigment of Ti ⁇ 2 particles coated with alumina or alumina-silica and having a fluoride compound or fluoride ions associated with them.
- the pigment of the invention is highly resistant to discoloration on exposure to ultraviolet light, and, when used in making a paper laminate, gives a product with significantly better lightfastness than one using conventional TiC»2 pigment. Nonetheless, properties such as improved photostability and humidity resistance can be further enhanced.
- the performance properties of white pigments comprising Ti ⁇ 2 particles coated with alumina or alumina-silica having a fluoride compound or fluoride ions associated with them are enhanced when the coated Ti ⁇ 2 is treated with an organosilicon compound.
- the resulting compositions are particularly useful in powder coatings and/or plastics applications.
- the present invention relates to an improvement to the coated ⁇ O2 pigment described in U.S. Patent 4,460,655, the teachings of which are incorporated herein by reference.
- the pigment of the invention is composed of rutile Ti ⁇ 2 particles conventionally coated with alumina or with alumina-silica.
- the alumina or alumina-silica ordinarily constitutes about 1 to about 8%, preferably about 3 to about 5%, by weight, of the pigment.
- Associated with the particles is a fluoride compound at a concentration of about 0.05 to about 5%, by weight of the ⁇ O2, or fluoride ions at a concentration of about 0.05 to about 2%, by weight of the Ti ⁇ 2, preferably about 0.2 to about 0.6%.
- Fluoride ion content and fluoride compound content of the pigment may be determined as follows:
- the pigment of the invention which has fluoride ions associated with it is also cerium ion-free, which means that the pigment is either completely devoid of cerium ions or contains only a small and insignificant number.
- Fluoride compounds which can be associated with the pigment particles according to the invention are K 7 Ce 6 F 3 ⁇ Na7Ce6F3i and
- the ⁇ O2 used to prepare the pigment of the invention can be of the conventional rutile variety, prepared by either the chloride or the sulfate process, as 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.
- a pigment of the invention which has fluoride ions associated with its particles may be made by first preparing an aqueous slurry containing 200-400 g per liter of Ti ⁇ 2- This slurry is brought to 45°-70°C and is held there during the rest of the preparation procedure. To the slurry is then added, with stirring, enough of a water-soluble fluoride to give a fluoride ion concentration in the slurry of about 0.5-2%, by weight of the Ti ⁇ 2-
- Illustrative of fluorides which can be used to supply fluoride ion are NaF, KF, NH4F and IiF. The slurry is then ordinarily stirred for 1- 15 minutes.
- phosphoric acid may be substituted for NaF, KF, NH4F and IiF.
- the slurry is processed as described above.
- the pigment made by this process has phosphate ions associated with the Ti ⁇ 2 particles and/or the alumina or alumina-silica.
- the phosphate ions are present at a concentration of about 0.05 to about 2% by weight of the Ti ⁇ 2 preferably about 0.2 to about 0.6%.
- Alumina is then precipitated on the Ti ⁇ 2 particles by adding enough sodium aluminate to the slurry to give a concentration of about 1-8%, by weight of the Ti ⁇ 2- Acid, ordinarily sulfuric acid or hydrochloric acid, is added at the same time, to maintain the pH of the slurry within the range of 6.5-9 during the precipitation step. After addition of the aluminate is complete, the slurry is allowed to cure, with stirring, for 15-30 minutes.
- the resulting pigment is then separated from the liquid by filtration or centrifugation and washed with water.
- the pigment of this aspect of invention is prepared, one should take care to avoid the addition of cerium ions at every stage of preparation.
- the pigment of the invention which has a fluoride compound associated with its particles may be prepared in a similar way, by first preparing an aqueous slurry of Ti ⁇ 2 and then generating the fluoride compound in it in situ. This is done according to the illustrative equation: 31NaF+ 6Ce(S ⁇ 4)2- Na7Ce6F 31 + 12Na2SO
- cerium salts which may be used are ammonium eerie nitrate, eerie nitrate, and eerie sulfate. Ceric sulfate is preferred.
- Suitable organosilicon compound as described below is then added to the coated Ti ⁇ 2 particles.
- Suitable silanes have the formula:
- silanes useful in carrying out the invention include hexyltrimethoxysilane, octyltriethoxysilane, nonyltriethoxysilane, decyltriethoxysilane, dodecyltriethoxysilane, tridecyltriethoxysilane, tetradecyltriethoxysilane, pentadecyltriethoxysilane, hexadecyltriethoxysilane, heptadecyltriethoxysilane and octadecyltriethoxysilane.
- Weight content of the silane, based on total silanized pigmentary Ti ⁇ 2 is typically about 0.3 to about
- 2.0 wt.% preferably about 0.7 to about 1.0 wt.%. In excess of 2.0 wt.% may be used but no particular advantage is observed.
- a mixture of at least one silane with at least one polysiloxane is useful in carrying out the invention.
- Suitable polysiloxanes have the formula:
- polydimethylsiloxane (PDMS) vinyl phenylmethyl terminated dimethyl siloxanes, divinylmethyl terminated polydimethyl siloxane and the like are suitable polysiloxanes.
- PDMS is a preferred polysiloxane.
- Weight content of the silane and polysiloxane, based on total silanized pigmentary ⁇ O2, is about 0.3 to about 5.0 wt.%, preferably from about 1.0 to 2.5 wt.%.
- silane to polysiloxane can be 1 silane:2 polysiloxane up to 2 silane: 1 polysiloxane.
- An especially preferred ratio is 1 silane: 1 polysiloxane.
- Si ⁇ 2 is defined herein to refer to Ti ⁇ 2 treated with at least one silane, or the mixture of at least one silane and at least one polysiloxane (collectively referred to herein as organosilicon treated).
- Coated Ti ⁇ 2 is defined herein to refer to Ti ⁇ 2 particles with alumina or alumina-silica having a fluoride compound or fluoride ions (or phosphate ions) associated with them.
- silane and polysiloxane are commercially available or can be prepared by processes known in the art such as those described in "Organosilicon Compounds", S. Pawlenko, et al., New York (1980), the teachings of which are incorporated herein by reference.
- the method of addition is not especially critical and the coated Ti ⁇ 2 pigment may be treated with the silane in a number of ways.
- the silane addition can be made neat or prehydrolyzed, from a slurry, a filtration step, during drying or at a size operation such as a fluid energy mill, e.g., micronizer, or media mill as described in greater detail in copending application entitled "PROCESS FOR PREPARING SILANIZED Ti0 2 PIGMENTS USING A MEDIA MILL", the teachings of which are incorporated herein by reference, or post blending after micronizing.
- a fluid energy mill e.g., micronizer, or media mill
- U.S.3,834,924 describes organosilane and pigment dispersion mixed or blended directly in a suitable solids mixing apparatus.
- An example of post blending is described in greater detail in U.S. Patents 3,915,735 and 4,141,751.
- the polysiloxane addition can be made in conjunction with the silane or post addition to the silanized pigment.
- the organosilicon addition is described in greater detail below. If water, either a liquid or vapor (steam), is present as a component of the process stream, hydrolysis of the hydrolyzable groups of the silane will occur and the silane coating will bond to a Ti ⁇ 2 base and/or the coated Ti ⁇ 2- Prehydrolyzing the silane is a preferred step in treating the Ti ⁇ 2 pigment with the silane. If the silane is added neat to the coated Ti ⁇ 2, then moisture adsorbed on the Ti ⁇ 2 will effect the hydrolysis, but at a lower rate than if excess moisture is present. Hydrolysis of silanes is described in greater detail in "Organofunctional Silanes" by Union Carbide (1991), the teachings of which are incorporated herein by reference.
- the resulting pigments may be further spray dried and ground in a fluid-energy mill such as a micronizer if the organosilicon addition occurred at the slurry or filtration step.
- the resulting materials of the invention may be used to pigment plastics in any of the customary ways, typically by melt compounding techniques known in the art.
- powder coating compositions may be prepared with the pigments of the invention in any of the conventional ways.
- Polymers which are suitable for use in the present invention include, by way of example but not limited thereto, polymers of ethylenically unsaturated monomers including olefins such as polyethylene, polypropylene, polybutylene, and copolymers of ethylene with higher olefins such as alpha olefins containing 4 to 10 carbon atoms or vinyl acetate, etc,; vinyls such as polyvinyl chloride, polyvinyl esters such as polyvinyl acetate, polystyrene, acrylic homopolymers and copolymers; phenolics; alkyds; amino resins; epoxy resins, polyamides, polyurethanes; phenoxy resins, polysulfones; polycarbonates; polyether and chlorinated polyesters; polyethers; acetal resins; polyimides; and polyoxyethylenes.
- olefins such as polyethylene, polypropylene, polybutylene, and copolymers of ethylene
- the polymers according to the present invention also include various rubbers and/or elastomers either natural or synthetic polymers based on copolymerization, grafting, or physical blending of various diene monomers with the above-mentioned polymers, all as generally known in the art.
- the present invention is useful for any such white-pigmented plastic or elastomeric compositions (collectively referred to herein as a white-pigmented polymers) .
- the invention is felt to be particularly useful for polyolefins such as polyethylene, polypropylene, polyvinyl chloride, polyamides and polyester.
- additives may be included in the plastics and powder coatings as is necessary, desirable or conventional for the intended end use.
- additives include, but are not limited to, antioxidants, light stabilizers, lubricants, thermal processing additives and the like.
- Addition of an organosilicon compound to the coated ⁇ O2 eliminates the aging problem.
- the composition of the invention has a unique combination of improved photostability and resistance to humidity thus resulting in improved optical properties.
- throughput in manufacturing the treated Ti ⁇ 2 pigment has been increased via improvement in bulk flow properties, and increased yellowing resistance caused by phenolic polymer additives has been observed as demonstrated below.
- Example 2 Same as Example 1 except the amount of silane was changed to effect a 0.7 wt% loading of silane on the pigment.
- Example 2 Same as Example 2 except the silane was changed to polydimethylsiloxane effecting a 0.7 wt% loading of silane on the pigment.
- EXAMPLE 7 Same as Example 2 except the silane was changed to a mixture of octyltriethoxysilane and polydimethylsiloxane, each in an amount to effect a loading of 0.7 wt% on the pigment or a total of 1.4 wt% loading of silane on the pigment.
- EXAMPLE 8 Same as Example 2 except the silane was changed to hexyltrimethoxysilane effecting a 0.7 wt% loading of silane on the pigment.
- Example 2 Same as Example 2 except the silane was changed to octyldecyltriethoxysilane effecting a 0.7 wt% loading of silane on the pigment.
- HUMIDITY RESISTANCE Materials from Examples 1-C5 were evaluated for resistance to humidity in a 90% humidity/90 degrees F environmental chamber with exposure time equal to 7 days. The data is presented below in Table 1.
- Tint strength (TS) was used as a measure of the optical properties of the pigments.
- TS a measure of the ability of a white pigment to provide whiteness and brightness, is determined by reflectance readings of gray tinted vinyl sheets using a spectrophotometer. The higher the reflectance, the higher is the tint strength.
- Table 1 gives results for the change in TS (delta TS) before and after exposure in the environmental chamber. TABLE 1
- Ti ⁇ 2 pigments have a tendency to interact with formulation additives, especially phenolic antioxidants used in polyethylene, a problem that gives rise to a yellow discoloration.
- formulation additives especially phenolic antioxidants used in polyethylene
- the yellow discoloration due to antioxidants is noticeable after processing at elevated temperatures and can be further exacerbated by relatively short term exposure to certain wavelengths of light.
- Yellowing is expressed as delta b which represents the difference in color reflectivity as measured by a Hunterlab color difference tester, after the pigment is dispersed in a polymer matrix with a hindered amine and an antioxidant.
- Ti ⁇ 2 was mixed with Tinuvin 770 (a hindered amine light stabilizer, available from Ciba-Geigy) and 2,6-di-t-butyl-4-methylphenol (BHT) dissolved in mineral oil/petrolatum and exposed to ultraviolet (UV) light for 24 hours. The results from this test are provided in Table 2.
- BHT 2,6-di-t-butyl-4-methylphenol
- UV light ultraviolet
- the organosilicon treatment to the coated Ti ⁇ 2 improves photostability.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995600845 DE69500845T2 (en) | 1994-02-28 | 1995-02-28 | ORGANOSILICIUM TREATMENT OF TITANIUM DIOXIDE PIGMENT WHICH COATING CONTAINS FLUORIDIONS |
EP19950912762 EP0748360B1 (en) | 1994-02-28 | 1995-02-28 | ORGANOSILICON TREATMENT OF TiO2 PIGMENT BEARING A COATING WITH FLUORIDE IONS |
AU19815/95A AU701549B2 (en) | 1994-02-28 | 1995-02-28 | Organosilicon treatment of TiO2 pigment bearing a coating with fluoride ions |
JP52253795A JP3042889B2 (en) | 1994-02-28 | 1995-02-28 | Organosilicon treatment of TiO 2 pigments with fluoride ion coating |
FI963335A FI963335A0 (en) | 1994-02-28 | 1996-08-27 | Treatment of TiO2 pigment with fluoride ion coating with organosilicon compound |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20305994A | 1994-02-28 | 1994-02-28 | |
US08/203,059 | 1994-02-28 | ||
US08/392,708 | 1995-02-23 | ||
US08/392,708 US5562990A (en) | 1994-02-28 | 1995-02-23 | Organosilicon treatment of TiO2 pigment bearing a coating with fluoride ions |
Publications (1)
Publication Number | Publication Date |
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WO1995023193A1 true WO1995023193A1 (en) | 1995-08-31 |
Family
ID=26898276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/002812 WO1995023193A1 (en) | 1994-02-28 | 1995-02-28 | ORGANOSILICON TREATMENT OF TiO2 PIGMENT BEARING A COATING WITH FLUORIDE IONS |
Country Status (10)
Country | Link |
---|---|
US (1) | US5562990A (en) |
EP (1) | EP0748360B1 (en) |
JP (1) | JP3042889B2 (en) |
AU (1) | AU701549B2 (en) |
CA (1) | CA2181231A1 (en) |
DE (1) | DE69500845T2 (en) |
ES (1) | ES2107310T3 (en) |
FI (1) | FI963335A0 (en) |
TW (1) | TW369556B (en) |
WO (1) | WO1995023193A1 (en) |
Cited By (3)
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WO1997020001A1 (en) * | 1995-12-01 | 1997-06-05 | Scm Chemicals, Inc. | Silane treated inorganic pigments |
EP0950695A1 (en) * | 1998-03-31 | 1999-10-20 | Morton International, Inc. | Coating powder for high temperature resistant coatings |
EP1726625A1 (en) * | 2005-05-23 | 2006-11-29 | E.I. Dupont De Nemours And Company | Lower-energy process for preparing passivated inorganic nanoparticles |
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DE69505955T2 (en) * | 1994-02-28 | 1999-08-19 | Du Pont | RESISTANT TO DISCOLORATION SILANIZED TITANIUM DIOXIDE PIGMENTS WHEN WORKED IN POLYMERS |
WO2001080253A1 (en) | 2000-04-13 | 2001-10-25 | E.I. Dupont De Nemours And Company | Process for coating wire conductor |
US6783586B2 (en) | 2001-11-01 | 2004-08-31 | E. I. Du Pont De Nemours And Company | Easy to disperse, high durability TiO2 pigment and method of making same |
US20050129634A1 (en) * | 2003-12-16 | 2005-06-16 | Frerichs Scott R. | Passivated nano-titanium dioxide particles and methods of making the same |
US20050239921A1 (en) * | 2004-04-27 | 2005-10-27 | Birmingham John N | Preparation of organic additive-treated, pyrogenic silica-encapsulated titanium dioxide particles |
EP1760116B1 (en) * | 2004-06-24 | 2017-08-09 | Ishihara Sangyo Kaisha, Ltd. | Titanium dioxide pigments, process for the production thereof, and resin compositions containing the pigments |
US20080053336A1 (en) * | 2006-09-06 | 2008-03-06 | Tronox Llc | Aqueous coating compositions with improved tint strength and gloss properties, comprising pigments surface-treated with certain organosilicon compounds |
US7250080B1 (en) | 2006-09-06 | 2007-07-31 | Tronox Llc | Process for the manufacture of organosilicon compound-treated pigments |
DE102008058351A1 (en) * | 2008-11-20 | 2010-06-02 | Kronos International, Inc. | Surface treated titanium dioxide pigments for plastics and method of manufacture |
JP2011068757A (en) * | 2009-09-25 | 2011-04-07 | Konoshima Chemical Co Ltd | Magnesium oxide-based highly water-resistant thermoconductive filler, method for producing the same, and resin composition |
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FR3066107B1 (en) | 2017-05-12 | 2019-07-12 | L'oreal | PHOTOSTABLE COMPOSITION BASED ON PERLITE / TITANIUM / SILICE COMPOSITE PARTICLES |
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1995
- 1995-02-23 US US08/392,708 patent/US5562990A/en not_active Expired - Lifetime
- 1995-02-28 ES ES95912762T patent/ES2107310T3/en not_active Expired - Lifetime
- 1995-02-28 DE DE1995600845 patent/DE69500845T2/en not_active Expired - Lifetime
- 1995-02-28 AU AU19815/95A patent/AU701549B2/en not_active Expired
- 1995-02-28 CA CA 2181231 patent/CA2181231A1/en not_active Abandoned
- 1995-02-28 EP EP19950912762 patent/EP0748360B1/en not_active Expired - Lifetime
- 1995-02-28 WO PCT/US1995/002812 patent/WO1995023193A1/en active IP Right Grant
- 1995-02-28 JP JP52253795A patent/JP3042889B2/en not_active Expired - Fee Related
- 1995-03-27 TW TW084102949A patent/TW369556B/en active
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1996
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EP0029137A1 (en) * | 1979-11-17 | 1981-05-27 | Bayer Ag | Titanium dioxide pigments of good dispersibility, process for their preparation and their use |
EP0044515A1 (en) * | 1980-07-18 | 1982-01-27 | Kemira Oy | An article coated with a pigmented thin plastics material film containing a coated titanium dioxide pigment and a process for the production of the same |
US4460655A (en) * | 1983-04-04 | 1984-07-17 | E. I. Du Pont De Nemours And Company | TiO2 Pigment bearing a coating with fluoride ions and laminate and coating based thereon |
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WO1997020001A1 (en) * | 1995-12-01 | 1997-06-05 | Scm Chemicals, Inc. | Silane treated inorganic pigments |
US5653794A (en) * | 1995-12-01 | 1997-08-05 | Scm Chemicals, Inc. | Silane treated inorganic pigments |
EP0950695A1 (en) * | 1998-03-31 | 1999-10-20 | Morton International, Inc. | Coating powder for high temperature resistant coatings |
EP1726625A1 (en) * | 2005-05-23 | 2006-11-29 | E.I. Dupont De Nemours And Company | Lower-energy process for preparing passivated inorganic nanoparticles |
US7276231B2 (en) | 2005-05-23 | 2007-10-02 | E I Du Pont De Nemours And Company | Lower-energy process for preparing passivated inorganic nanoparticles |
AU2006202179B2 (en) * | 2005-05-23 | 2011-09-22 | E. I. Du Pont De Nemours And Company | Lower-energy process for preparing passivated inorganic nanoparticles |
Also Published As
Publication number | Publication date |
---|---|
AU701549B2 (en) | 1999-01-28 |
US5562990A (en) | 1996-10-08 |
AU1981595A (en) | 1995-09-11 |
CA2181231A1 (en) | 1995-08-31 |
JP3042889B2 (en) | 2000-05-22 |
JPH09509687A (en) | 1997-09-30 |
FI963335A (en) | 1996-08-27 |
DE69500845D1 (en) | 1997-11-13 |
DE69500845T2 (en) | 1998-04-23 |
ES2107310T3 (en) | 1997-11-16 |
TW369556B (en) | 1999-09-11 |
EP0748360A1 (en) | 1996-12-18 |
FI963335A0 (en) | 1996-08-27 |
EP0748360B1 (en) | 1997-10-08 |
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