WO2006112199A1 - マグネシウム化合物ゾルおよびその製造方法、ならびにそれを用いたセラミック原料の製造方法 - Google Patents
マグネシウム化合物ゾルおよびその製造方法、ならびにそれを用いたセラミック原料の製造方法 Download PDFInfo
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- WO2006112199A1 WO2006112199A1 PCT/JP2006/304591 JP2006304591W WO2006112199A1 WO 2006112199 A1 WO2006112199 A1 WO 2006112199A1 JP 2006304591 W JP2006304591 W JP 2006304591W WO 2006112199 A1 WO2006112199 A1 WO 2006112199A1
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- magnesium
- magnesium compound
- aqueous solvent
- sol
- producing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/14—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
- C04B35/4682—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/624—Sol-gel processing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/443—Nitrates or nitrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/449—Organic acids, e.g. EDTA, citrate, acetate, oxalate
Definitions
- the present invention relates to a magnesium compound sol using an aqueous solvent, a method for producing the same, and a method for producing a ceramic raw material.
- Multilayer capacitors are required to be small in size and have a large capacity.
- the thickness of each multilayer capacitor has been increasing year by year, and in recent years, the thickness per layer is several per zm or less.
- it is required to improve the dispersibility of subcomponents. To that end, it is necessary to use fine particles of secondary components such as magnesium.
- the minor component be present as a sol (colloidal solution) before combining.
- the solvent for the sol is preferably aqueous. If an organic solvent is used, an explosion-proof device must be installed, which is not desirable because it increases the manufacturing cost.
- Patent Document 1 proposes a method for producing a magnesium compound sol using an aqueous solvent.
- stable colloidal particles can be obtained by dispersing magnesium acetate or anhydrous magnesium acetate obtained by subjecting magnesium acetate tetrahydrate to dehydration in water.
- Patent Document 1 Japanese Patent Laid-Open No. 9-312132
- the present invention has been made in view of the circumstances as described above, and an object thereof is to provide a magnesium compound sol having high stability in an aqueous solvent even when used in combination with various metal compound sols. There is to do.
- Another object of the present invention is to provide a magnesium compound solution having high stability in an aqueous solvent without being restricted by the type of magnesium supply source and without undergoing complicated steps such as a dehydration step.
- An object of the present invention is to provide a method for producing a magnesium compound sol that can be easily produced.
- Another object of the present invention is to provide a method for producing a ceramic raw material capable of producing a ceramic raw material mixed with the magnesium compound sol of the present invention as a subcomponent.
- the magnesium compound sol according to claim 1 of the present invention is a magnesium compound sol in which magnesium micelle particles coordinated with a strong rubonic acid having a carbonyl group are dispersed in an aqueous solvent, the carboxylic acid Is at least one selected from succinic acid, succinic acid and EDTA force, and the molar ratio of the carbonyl group to the magnesium is 1.2 or more and 2 or less.
- the magnesium compound sol according to claim 2 of the present invention is characterized in that, in the invention according to claim 1, the pH power of the aqueous solvent is 11 or more. is there
- the magnesium compound sol according to claim 3 of the present invention is characterized in that, in the invention according to claim 1, the pH of the aqueous solvent is 8 or more and 11 or less.
- the method for producing a magnesium compound sol according to claim 4 of the present invention is a method for producing the magnesium compound sol according to any one of claims 1 to 3, wherein the magnesium ion is a magnesium ion. Or a step of preparing an aqueous solvent in which magnesium compound particles are dispersed, and a step of adding a carboxylic acid or a salt of the carboxylic acid to the aqueous solvent and reacting with the magnesium ion or the magnesium compound particles. It is a sign.
- the pH of the aqueous solvent is adjusted by dissolving a basic substance in the aqueous solvent. It includes a step of adjusting.
- the magnesium compound sol according to any one of claims 1 to 3 is used as an auxiliary component for the ceramic powder. It is characterized by mixing.
- the subcomponent includes a sol containing a metal element other than magnesium as a main component. It is a feature.
- the stability in an aqueous solvent is not limited by the type of magnesium supply source, and does not go through complicated steps such as a dehydration step. A high magnesium compound sol can be easily obtained.
- a ceramic raw material in which the aqueous solvent magnesium compound sol of the present invention is mixed as an accessory component can be produced.
- the magnesium compound sol of the present invention includes an aqueous solvent and magnesium micelle particles dispersed therein. These magnesium micelle particles are formed by coordinating with carboxylic acid magnesium having a carboxylic group to form a complex, and the complex is assembled.
- the aqueous solvent means that the main component of the solvent is water and not an organic solvent.
- an aqueous solvent in which a small amount of a water-soluble organic compound such as ethanol is dissolved in the aqueous solvent is also included in the aqueous solvent of the present invention.
- small amount here refers to an amount that does not require explosion-proof equipment.
- magnesium micelle particles In order for the magnesium micelle particles to exist as stable colloidal particles in the aqueous solvent, the type and amount of the carboxylic acid coordinated with magnesium are important. If stable colloidal particles cannot be obtained, they can be dissolved in an aqueous solvent, conversely gelled or precipitated.
- the carboxylic acid to be coordinated to magnesium is not particularly limited as long as it has a carbo group and can generate magnesium micelle particles by coordination to magnesium.
- As the carboxylic acid coordinated to magnesium at least one selected from succinic acid, succinic acid and EDTA power is used.
- the amount of carboxylic acid relative to magnesium is important for the production of magnesium micelle particles.
- the amount of carboxylic acid relative to magnesium when citrate, succinate, or EDTA is used as the carboxylic acid will be described.
- Contributing to the stability of the magnesium micelle particles is the molar ratio of carbo groups to magnesium (carbo group Z magnesium), and the molar ratio is 1.2 or more and 2 or less.
- citrate when used as the carboxylic acid, it must be reacted with 0.4 to 0.666 moles of citrate per 1 mole of magnesium, because cuenoic acid has three carbo groups per molecule. become.
- the molar ratio of the carbonyl group to magnesium is preferably 1.5 or more and 1.8 or less.
- the pH of the aqueous solvent is preferably 4 or more and 11 or less.
- the pH is less than 4, the magnesium compound is easily dissolved in an aqueous solvent, and stable magnesium micelle particles are not generated. Does not become sol.
- P H is more than 11, cause the magnesium compound is precipitated, also not generate stable magnesium micelle particles, it if the sol! /.
- the pH of the aqueous solvent is 8 or more and 11 or less. Preferably there is. This is because when the pH is less than 8, the barium titanate compound is likely to elute in water.
- the magnesium compound sol of the present invention may contain other ions or the like as long as the object of the present invention is not hindered.
- the magnesium compound that is the source of magnesium when magnesium acetate is used as the magnesium compound that is the source of magnesium, a considerable amount of acetate ions are present in the aqueous solvent, and a small amount of acetic acid is coordinated in the magnesium micelle particles. I sometimes get lost. However, this does not adversely affect the stability of the magnesium compound sol of the present invention. Also, trace amounts of impurities such as other metal components may be mixed as long as they do not interfere with the object of the present invention.
- the method for producing a magnesium compound sol of the present invention includes a first step of preparing an aqueous solvent in which magnesium ions or magnesium compound particles are dispersed, and introducing the carboxylic acid or the carboxylic acid salt into the aqueous solvent. And a second step of reacting with the magnesium ions or the magnesium compound particles.
- a magnesium compound as a magnesium supply source is dissolved in an aqueous solvent to obtain an aqueous solvent containing magnesium ions.
- the kind of the magnesium compound is not particularly limited as long as the magnesium micelle particles coordinated with the carboxylic acid generate stable colloidal particles.
- the solubility of the magnesium compound in water prior to coordination with the carboxylic acid is not a problem.
- magnesium acetate which may include a hydrate
- magnesium oxide may cause a complicated manufacturing process depending on the large heat generation during dissolution, but it does not adversely affect the stability of the produced magnesium compound sol.
- a magnesium compound that is difficult to dissolve in an aqueous solvent such as hydroxy-magnesium
- the hydroxy-magnesium particles are dispersed in water and the aqueous solution is dissolved. It may be used as a medium.
- a predetermined carboxylic acid or carboxylate is added to the aqueous solvent in which the magnesium ions or the magnesium compound particles prepared in the first step are dispersed, and the aqueous solvent is used as the aqueous solvent. While stirring well, the magnesium ion or magnesium compound particles are reacted with the carboxylic acid.
- the temperature at the time of stirring may be room temperature, but the reaction rate is increased by heating. This reaction produces magnesium micelle particles in which carboxylic acid is coordinated to magnesium. The magnesium micelle particles become stable colloidal particles, thereby producing a stable magnesium compound sol.
- the pH of the aqueous solvent may be lowered by the addition of the carboxylic acid or the carboxylate described above.
- a basic substance such as sodium hydroxide, potassium hydroxide, amine compound or ammonia compound can be added as a pH adjuster to adjust the pH to an appropriate value.
- the magnesium compound sol is mixed as an accessory component with the ceramic powder.
- ceramic powder dielectric ceramic is preferred.
- barium titanate compound is preferred as the main component of dielectric ceramic.
- the method of mixing the magnesium compound sol is not particularly limited as long as the magnesium compound particles can be uniformly dispersed.
- a sol of another metal element for example, a rare earth element compound may be added. Even if the magnesium compound sol of the present invention coexists with a sol of another metal element at the same time, its stability is not impaired.
- the effects of the type of carboxylic acid and the mole ratio of the carbonyl group to magnesium were investigated. That is, as a raw material of the magnesium compound sol, a predetermined amount of magnesium acetate (including hydrate), magnesium chloride salt, and magnesium nitrate powder was prepared and dissolved in water. In addition, magnesium hydroxide powder was put into water and stirred to disperse the magnesium hydroxide particles in water. In contrast, the predetermined carboxylic acid or carboxylate shown in Table 1 was added while stirring so that the molar ratio to magnesium was the value shown in Table 1, and a predetermined amount of monoethanolamine was added to the pH. 9. The mixture was stirred until it became 5.
- samples Nos. 1 to 12 use citrate, succinic acid, EDTA or a salt thereof as the carboxylic acid, and the molar ratio of carbonyl group to magnesium is 1.2. Since the sample was reacted so that it was 2 or less, a stable magnesium compound sol was obtained.
- sample numbers 13 and 14 are samples using tartaric acid and tartrate as carboxylic acids, but tartaric acid and tartrate are not carboxylic acids used in the present invention! Therefore, magnesium micelle particles in which tartaric acid was coordinated to magnesium and the solubility of magnesium micelles was low became a white gel, and no sol was obtained.
- Sample Nos. 15 and 16 are samples using lactic acid and shinomic acid as carboxylic acids, respectively. Since lactic acid and shinonoic acid are not carboxylic acids used in the present invention, lactic acid and oxalic acid are sufficient for magnesium The sol was not obtained due to precipitation of magnesium hydroxide.
- Sample No. 17 is a sample using carboxylic acid as the carboxylic acid. Since the molar ratio of the carboxylic group to magnesium was as small as 0.6, the solubility of magnesium micelle particles was low and white. The gel was so strong that no sol was obtained. [0043] In Sample No. 18 19, the molar ratio of the carboxylic group to force magnesium, which is a sample using citrate as the carboxylic acid, was greater than 2, respectively. A sol was not obtained.
- the samples of Sample No. 22 28 and Sample No. 31 37 are samples in which the pH is adjusted to 4 11 which is a basic substance of an aqueous solvent and is within the range of the present invention. Therefore, a stable magnesium compound sol was obtained.
- the sample of Sample No. 2130 was a sample having a pH lower than that of the pH force, so that the magnetic micelle particles were not generated and became a solution, and a sol was not obtained.
- sample No. 29 was a sample having a pH higher than 11, precipitation of magnesium hydroxide occurred, and sol was not obtained.
- a ceramic raw material was produced using the magnesium compound sol of the present invention and another metal compound sol as subcomponents. That is, barium titanate powder was prepared as a ceramic powder, and this was mixed with water by a ball mill to obtain a slurry containing barium titanate powder.
- a magnesium compound sol of sample number 1 of Example 1 of the present invention was prepared.
- a metal compound sol containing metal elements other than magnesium as the main component a holmium compound solution in which holmium micelle particles in which citrate is coordinated to holmium is dispersed in water was prepared.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Dispersion Chemistry (AREA)
- Colloid Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007521128A JP4530041B2 (ja) | 2005-03-30 | 2006-03-09 | マグネシウム化合物ゾルおよびその製造方法、ならびにそれを用いたセラミック原料の製造方法 |
CN2006800004453A CN1989072B (zh) | 2005-03-30 | 2006-03-09 | 镁化合物溶胶其制造方法、及使用其的陶瓷原料的制造方法 |
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JP2005098923 | 2005-03-30 | ||
JP2005-098923 | 2005-03-30 |
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WO2006112199A1 true WO2006112199A1 (ja) | 2006-10-26 |
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PCT/JP2006/304591 WO2006112199A1 (ja) | 2005-03-30 | 2006-03-09 | マグネシウム化合物ゾルおよびその製造方法、ならびにそれを用いたセラミック原料の製造方法 |
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JP (1) | JP4530041B2 (ja) |
KR (1) | KR100880534B1 (ja) |
CN (1) | CN1989072B (ja) |
TW (1) | TW200706495A (ja) |
WO (1) | WO2006112199A1 (ja) |
Families Citing this family (1)
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KR100983118B1 (ko) * | 2007-12-07 | 2010-09-17 | 삼성전기주식회사 | 산화마그네슘 나노입자 제조방법 및 산화마그네슘 나노졸 제조방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03153557A (ja) * | 1989-11-13 | 1991-07-01 | Sakai Chem Ind Co Ltd | 鉛系ペロブスカイト型セラミックスの原料粉末の製造方法 |
JPH0891829A (ja) * | 1994-07-21 | 1996-04-09 | Vbc Srl | 水酸化マグネシウムの精製法 |
JPH09310033A (ja) * | 1996-05-23 | 1997-12-02 | Dainippon Printing Co Ltd | ゾル溶液及び膜形成方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3153557B2 (ja) * | 1991-02-01 | 2001-04-09 | 株式会社ハイタッチ双葉 | 吊り棚用横幅調整具 |
JP3319314B2 (ja) * | 1996-11-20 | 2002-08-26 | 株式会社村田製作所 | チタン酸バリウム系半導体磁器組成物 |
BR9911406A (pt) * | 1998-06-23 | 2002-09-24 | Cabot Corp | Dispersões de titanato de bário |
-
2006
- 2006-03-09 WO PCT/JP2006/304591 patent/WO2006112199A1/ja active Application Filing
- 2006-03-09 CN CN2006800004453A patent/CN1989072B/zh active Active
- 2006-03-09 KR KR1020077004863A patent/KR100880534B1/ko active IP Right Grant
- 2006-03-09 JP JP2007521128A patent/JP4530041B2/ja active Active
- 2006-03-30 TW TW095111322A patent/TW200706495A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03153557A (ja) * | 1989-11-13 | 1991-07-01 | Sakai Chem Ind Co Ltd | 鉛系ペロブスカイト型セラミックスの原料粉末の製造方法 |
JPH0891829A (ja) * | 1994-07-21 | 1996-04-09 | Vbc Srl | 水酸化マグネシウムの精製法 |
JPH09310033A (ja) * | 1996-05-23 | 1997-12-02 | Dainippon Printing Co Ltd | ゾル溶液及び膜形成方法 |
Also Published As
Publication number | Publication date |
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CN1989072B (zh) | 2010-05-19 |
JPWO2006112199A1 (ja) | 2008-12-04 |
TW200706495A (en) | 2007-02-16 |
KR20070088497A (ko) | 2007-08-29 |
CN1989072A (zh) | 2007-06-27 |
KR100880534B1 (ko) | 2009-01-28 |
JP4530041B2 (ja) | 2010-08-25 |
TWI315719B (ja) | 2009-10-11 |
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