CN114456737A - Aluminum oxide dispersion liquid compatible with anion system and preparation method thereof - Google Patents
Aluminum oxide dispersion liquid compatible with anion system and preparation method thereof Download PDFInfo
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- CN114456737A CN114456737A CN202110238605.4A CN202110238605A CN114456737A CN 114456737 A CN114456737 A CN 114456737A CN 202110238605 A CN202110238605 A CN 202110238605A CN 114456737 A CN114456737 A CN 114456737A
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- alumina
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- alumina dispersion
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- 239000006185 dispersion Substances 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 150000001450 anions Chemical class 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 70
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 54
- 229920002635 polyurethane Polymers 0.000 claims abstract description 23
- 239000004814 polyurethane Substances 0.000 claims abstract description 23
- 239000003607 modifier Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 15
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 15
- 239000002562 thickening agent Substances 0.000 claims abstract description 15
- 239000008234 soft water Substances 0.000 claims abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 10
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 20
- 125000000129 anionic group Chemical group 0.000 claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000005056 polyisocyanate Substances 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- -1 carboxylic acid sodium salt Chemical class 0.000 claims description 2
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 11
- 238000002834 transmittance Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002105 nanoparticle Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 239000002861 polymer material Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005421 electrostatic potential Methods 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- 229920002959 polymer blend Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000875 high-speed ball milling Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides an alumina dispersion liquid compatible with an anion system and a preparation method thereof, and the alumina dispersion liquid comprises 6-15 parts of alumina powder, 0.06-0.15 part of dispersant, 1.5-3 parts of modifier, 0.002-0.005 part of thickener, 0.02-0.04 part of sodium hydroxide solution and 85-95 parts of soft water in parts by mass; the modifier is prepared by reacting polyethyleneimine, polymethyl methacrylate and polyvinyl alcohol in a mass ratio of 3:5: 13-14. The polymethyl methacrylate in the alumina dispersion liquid provided by the invention has stronger intermolecular force, and the polymethyl methacrylate is crosslinked with the polymethyl methacrylate to increase the intermolecular force, increase the interface effect, fully play the role of alumina, keep particles stably dispersed, and provide repulsive force by a modifier to ensure that the nanoparticles are stably dispersed; the content of sodium hydroxide is adjusted to ensure that the particles are stably dispersed in the solution, and the solution is mixed with the polyurethane primer of an anion system to increase the light transmittance of the primer.
Description
Technical Field
The invention belongs to the technical field of dispersion liquid, and particularly relates to an aluminum oxide dispersion liquid compatible with an anion system and a preparation method thereof.
Background
The nano alumina is a nano material with excellent characteristics of high strength, high hardness, abrasion resistance, high temperature resistance, oxidation resistance, good insulativity and the like. After the modified polymer material is filled with the nano-alumina, the mechanical properties, the electrical properties, the thermal properties and the like of the polymer material can be improved to different degrees, but the application of the nano-alumina in the polymer material has technical bottlenecks as the nano-alumina is the same as most nano-materials:
(1) agglomeration of the nanomaterial: the alumina has large surface energy due to small particle size, and is easy to agglomerate. Therefore, when the nano-alumina is compounded with a high polymer material, some nano-alumina is randomly aggregated together instead of evenly distributed, and the non-uniform aggregation of the nano-alumina can cause structural defects of the composite material, thereby directly influencing and reducing the performance of the material;
(2) the nano alumina powder is difficult to be uniformly dispersed in an organic matrix and is not well dispersed in a water phase medium, which directly causes the limitation of service performance and limits the industrialization process of the nano alumina powder;
(3) the Chinese invention patent 'a treatment method for stably dispersing nano-alumina in an organic solvent' (CN101215430B) discloses a treatment method for stably dispersing nano-alumina in an organic solvent. The invention takes high-speed ball milling as a dispersion mode, and when nano-alumina is put into an organic solvent for stable dispersion, a titanate coupling agent is added, and the organic surface treatment is carried out on the nano-alumina by the titanate coupling agent, so as to improve the dispersibility and stability of the nano-alumina in the organic solvent and ensure that the nano-alumina is stably dispersed in the organic solvent. The invention carries out surface modification on the nano alumina, has complex process, needs a ball mill and other machines, and does not mention the dispersion effect of nano alumina powder materials in aqueous solution.
Disclosure of Invention
In view of the above, the present invention is directed to an alumina dispersion compatible with an anionic system, which is mixed with a polyurethane primer of an anionic system to increase the transmittance of the primer, and a method for preparing the same.
The invention provides an alumina dispersion liquid compatible with an anion system, which comprises the following components in parts by mass:
6-15 parts of alumina powder, 0.06-0.15 part of dispersant, 1.5-3 parts of modifier, 0.002-0.005 part of thickener, 0.02-0.04 part of sodium hydroxide solution and 85-95 parts of soft water;
the modifier is prepared by reacting polyethyleneimine, polymethyl methacrylate and polyvinyl alcohol in a mass ratio of 3:5: 13-14.
In the present invention, the dispersant is selected from one or more of hydrophobically modified carboxylic acid sodium salt, polyacrylic acid sodium salt and ammonium salt.
In the present invention, the thickener is selected from one or more of diatomaceous earth, polyurethane, polyvinyl alcohol, and polyacrylamide.
In the invention, the concentration of the sodium hydroxide solution is 2.8-3.2 mol/L.
In the present invention, the alumina powder is gamma-type crystalline nano alumina.
In the invention, the pH value of the alumina dispersion liquid is 10-14. In particular embodiments, the dispersion has a pH of 10, 13, or 14.
In the invention, the anion system is polyurethane primer;
the polyurethane primer is prepared by reacting organic polyisocyanate and oligomeric polyol:
the organic polyisocyanate is selected from one or more of TDI, MDI and PAPI;
the oligomeric polyol is one or more of polyethylene glycol with the molecular weight of 800-1000, ethylene glycol, hexanediol and glycerol.
In the invention, the mass ratio of the alumina dispersion liquid to the polyurethane primer is 1: 9-11; in a specific embodiment, the mass ratio of the alumina dispersion to the polyurethane primer is 1: 10.
In a specific embodiment of the invention, the alumina dispersion liquid compatible with the anionic system comprises 6 parts by mass of alumina powder, 0.06 part by mass of a dispersant, 85 parts by mass of soft water, 1.5 parts by mass of a modifier, 0.002 part by mass of a thickener and 0.02 part by mass of a 3mol/L sodium hydroxide solution;
or the alumina dispersion liquid compatible with the anion system comprises 10 parts of alumina powder, 0.1 part of dispersant, 90 parts of soft water, 2.2 parts of modifier, 0.003 part of thickener and 0.03 part of 3mol/L sodium hydroxide solution in parts by mass;
or the alumina dispersion liquid compatible with the anion system comprises 15 parts of alumina powder, 0.15 part of dispersant, 95 parts of soft water, 3 parts of modifier, 0.005 part of thickener and 0.04 part of 3mol/L sodium hydroxide solution in parts by mass.
The invention provides a preparation method of the alumina dispersion liquid compatible with an anion system, which comprises the following steps:
mixing alumina powder, dispersant and soft water, stirring, adding modifier while stirring, adding thickener and sodium hydroxide solution to obtain alumina dispersion compatible with anionic system.
In the invention, the stirring speed is preferably 700-900 rpm, and more preferably 800 rpm.
The invention provides an alumina dispersion liquid compatible with an anion system, which comprises the following components in parts by mass: 6-15 parts of alumina powder, 0.06-0.15 part of dispersant, 1.5-3 parts of modifier, 0.002-0.005 part of thickener, 0.02-0.04 part of sodium hydroxide solution and 85-95 parts of soft water; the modifier is prepared by reacting polyethyleneimine, polymethyl methacrylate and polyvinyl alcohol in a mass ratio of 3:5: 13-14. According to the invention, polymethyl methacrylate and polyvinyl alcohol are subjected to graft copolymerization in the alumina dispersion liquid, and the graft polymer plays a role of a compatibilizer, so that the compatibility of a polymer blend can be greatly improved, and the mechanical property can be effectively exerted; polymethyl methacrylate has stronger intermolecular force, the cross-linking of polyethyleneimine and polymethyl methacrylate increases the intermolecular force, increases the interface effect, fully exerts the effect of alumina, keeps the particles stably dispersed, the repulsion force among the particles must be stronger than the van der Waals attraction force, and the action of the modifier is to provide the repulsion force to resist the van der Waals attraction force so as to ensure the dispersion stability of the nanoparticles; the pH value of the solution is adjusted by controlling the amount of sodium hydroxide, so that the surface electrical property of the particles can be changed to cause the change of electrostatic acting force and electrostatic potential energy, the stable dispersion of the particles in the solution is influenced, and the solution is mixed with polyurethane primer of an anion system to increase the light transmittance of the primer. The experimental results show that: the aluminum oxide dispersion liquid is mixed with the polyurethane primer, so that the light transmittance of the polyurethane primer is 75-90%.
Detailed Description
In order to further illustrate the present invention, the following examples are provided to describe in detail an alumina dispersion compatible with anionic systems and the preparation method thereof, but they should not be construed as limiting the scope of the present invention.
Preparatory examples
Mixing polyethyleneimine, polymethyl methacrylate and polyvinyl alcohol according to the mass ratio of 3:5:13.4, and reacting at 40-45 ℃ to obtain the modifier.
Example 1
Mixing 6 parts of alumina powder, 0.06 part of sodium polyacrylate dispersant and 85 parts of soft water, uniformly stirring, setting the stirring speed to 800r/min, adding 1.5 parts of the modifier prepared in the preparation example under the condition of continuous stirring, continuously stirring for 30min, then adding 0.002 part of polyurethane thickener, and continuously stirring for 20 min; 0.02 part of sodium hydroxide solution with the molar concentration of 3mol/L is added into the solution dropwise to adjust the pH value to 10, and alumina dispersion liquid compatible with an anion system is obtained.
The light transmittance of the polyurethane primer is tested by using a light transmittance meter.
The obtained dispersion liquid and polyurethane primer of an anionic system are mixed according to the mass ratio of 1:10, and the measured light transmittance is 75%.
Example 2
Mixing 10 parts of alumina powder, 0.1 part of polyacrylic sodium salt dispersant and 90 parts of soft water, uniformly stirring, setting the stirring speed to 800r/min, adding 2.2 parts of modifier prepared in the preparation example while continuously stirring, continuously stirring for 30min, then adding 0.003 part of polyurethane thickener, and continuously stirring for 20 min; 0.03 part of sodium hydroxide solution with the molar concentration of 3mol/L is added into the solution dropwise to adjust the pH value to 13, and alumina dispersion liquid compatible with an anion system is obtained.
The obtained dispersion liquid is mixed with polyurethane primer of an anion system according to the mass ratio of 1:10, and the measured light transmittance is 90%.
Example 3
Mixing 15 parts of alumina powder, 0.15 part of sodium polyacrylate dispersant and 95 parts of soft water, uniformly stirring, setting the stirring speed to 800r/min, adding 3 parts of the modifier prepared in the preparation example under the condition of continuous stirring, continuously stirring for 30min, then adding 0.005 part of polyurethane thickener, and continuously stirring for 20 min; 0.04 part of sodium hydroxide solution with the molar concentration of 3mol/L is added into the solution dropwise to adjust the pH value to 14, and alumina dispersion liquid compatible with an anion system is obtained.
The obtained dispersion liquid and polyurethane primer of an anion system are mixed according to the mass ratio of 1:10, and the measured light transmittance is 85%.
From the above examples, the present invention provides an alumina dispersion compatible with an anionic system, comprising the following components in parts by mass: 6-15 parts of alumina powder, 0.06-0.15 part of dispersant, 1.5-3 parts of modifier, 0.002-0.005 part of thickener, 0.02-0.04 part of sodium hydroxide solution and 85-95 parts of soft water; the modifier is prepared by reacting polyethyleneimine, polymethyl methacrylate and polyvinyl alcohol in a mass ratio of 3:5: 13-14. According to the invention, polymethyl methacrylate and polyvinyl alcohol are subjected to graft copolymerization in the alumina dispersion liquid, and the graft polymer plays a role of a compatibilizer, so that the compatibility of a polymer blend can be greatly improved, and the mechanical property can be effectively exerted; polymethyl methacrylate has stronger intermolecular force, the cross-linking of polyethyleneimine and polymethyl methacrylate increases the intermolecular force, increases the interface effect, fully exerts the effect of alumina, keeps the particles stably dispersed, the repulsion force among the particles must be stronger than the van der Waals attraction force, and the action of the modifier is to provide the repulsion force to resist the van der Waals attraction force so as to ensure the dispersion stability of the nanoparticles; the pH value of the solution is adjusted by controlling the amount of sodium hydroxide, the surface electrical property of the particles can be changed, so that the electrostatic acting force and the electrostatic potential energy are changed, the stable dispersion of the particles in the solution is influenced, and the solution is mixed with the polyurethane primer of an anionic system to increase the transmittance of the primer. The experimental results show that: and mixing the alumina dispersion liquid with the polyurethane primer to ensure that the transmittance of the polyurethane primer is 75-90%.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An alumina dispersion liquid compatible with an anion system comprises the following components in parts by mass:
6-15 parts of alumina powder, 0.06-0.15 part of dispersant, 1.5-3 parts of modifier, 0.002-0.005 part of thickener, 0.02-0.04 part of sodium hydroxide solution and 85-95 parts of soft water;
the modifier is prepared from the following components in a mass ratio of 3:5: 13-14 of polyethyleneimine, polymethyl methacrylate and polyvinyl alcohol.
2. The alumina dispersion according to claim 1, wherein the dispersant is one or more selected from the group consisting of a hydrophobically modified carboxylic acid sodium salt, a polyacrylic acid sodium salt, and an ammonium salt.
3. The alumina dispersion according to claim 1, wherein the thickener is one or more selected from the group consisting of diatomaceous earth, polyurethane, polyvinyl alcohol, and polyacrylamide.
4. The alumina dispersion according to claim 1, wherein the concentration of the sodium hydroxide solution is 2.8 to 3.2 mol/L.
5. The alumina dispersion of claim 1 wherein the alumina powder is gamma crystalline nano alumina.
6. The alumina dispersion according to claim 1, wherein the alumina dispersion has a pH of 10 to 14.
7. The alumina dispersion of claim 1 wherein the anionic system is a polyurethane primer;
the polyurethane primer is prepared by reacting organic polyisocyanate and oligomeric polyol:
the organic polyisocyanate is selected from one or more of TDI, MDI and PAPI;
the oligomeric polyol is selected from one or more of polyethylene glycol with molecular weight of 800-1000, ethylene glycol, hexanediol and glycerol.
8. A process for preparing an anionic system compatible alumina dispersion according to any one of claims 1 to 7 comprising the steps of:
mixing alumina powder, dispersant and soft water, stirring, adding modifier while stirring, adding thickener and sodium hydroxide solution to obtain alumina dispersion compatible with anionic system.
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CN202110238605.4A CN114456737A (en) | 2021-03-04 | 2021-03-04 | Aluminum oxide dispersion liquid compatible with anion system and preparation method thereof |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030124321A1 (en) * | 2001-10-25 | 2003-07-03 | Gerrit Schneider | Dispersion of aluminium oxide |
CN1477160A (en) * | 2002-01-26 | 2004-02-25 | �������¹ɷ�����˾ | Cation mixed oxide dispersion, coating pigment and ink-absorbing medium |
JP2004083724A (en) * | 2002-08-27 | 2004-03-18 | Dainichiseika Color & Chem Mfg Co Ltd | Alumina-dispersed hydrophilic polyurethane-based resin composition and method for producing the same |
JP2005313432A (en) * | 2004-04-28 | 2005-11-10 | Canon Finetech Inc | Alumina dispersion, and medium to be recorded, using it |
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2021
- 2021-03-04 CN CN202110238605.4A patent/CN114456737A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030124321A1 (en) * | 2001-10-25 | 2003-07-03 | Gerrit Schneider | Dispersion of aluminium oxide |
CN1477160A (en) * | 2002-01-26 | 2004-02-25 | �������¹ɷ�����˾ | Cation mixed oxide dispersion, coating pigment and ink-absorbing medium |
JP2004083724A (en) * | 2002-08-27 | 2004-03-18 | Dainichiseika Color & Chem Mfg Co Ltd | Alumina-dispersed hydrophilic polyurethane-based resin composition and method for producing the same |
JP2005313432A (en) * | 2004-04-28 | 2005-11-10 | Canon Finetech Inc | Alumina dispersion, and medium to be recorded, using it |
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