WO2004024628A1 - 合成ドロマイト類化合物及びその製造方法 - Google Patents
合成ドロマイト類化合物及びその製造方法 Download PDFInfo
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- WO2004024628A1 WO2004024628A1 PCT/JP2003/011537 JP0311537W WO2004024628A1 WO 2004024628 A1 WO2004024628 A1 WO 2004024628A1 JP 0311537 W JP0311537 W JP 0311537W WO 2004024628 A1 WO2004024628 A1 WO 2004024628A1
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- resin
- synthetic dolomite
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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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
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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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
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- 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
- C04B2/00—Lime, magnesia or dolomite
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/78—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by stacking-plane distances or stacking sequences
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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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
- C01P2006/12—Surface area
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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
Definitions
- the present invention relates to a synthetic dolomite compound having high whiteness, a large surface area, few coarse particles, and which can be synthesized by a simpler method than before, and a method for producing the same.
- novel synthetic dolomite compounds obtained by the present invention include food calcium, magnesium reinforcing agents, antacids, adhesives, plastics, rubbers, coatings, inks, sealing materials, filling materials for toothpastes and papermaking. It is useful in various fields such as pharmaceuticals. In addition, new applications can be expected by combining various applications. Background art
- Dolomite mineral is a typical sedimentary rock and contains organic matter. This organic substance undergoes metamorphism and diagenesis, mainly through one of the dehydrogenation reaction (coalification) and the hydrogenation reaction (petroleum hydrocarbon conversion), and finally exists as graphite and methane. ing. Its abundance varies depending on the production area and mining layer, but it may contain trace amounts of organic substances such as proteins and amino acids and low-molecular hydrocarbons. As a result, the whiteness is low and it is gray or grayish white. The color of these rocks is roughly proportional to the free carbon content. Black dolomite contains about 0.038%, gray contains about 0.032%, and white contains about 0.020% of free carbon.
- the method of adjusting the particle size of natural dolomite is to mechanically dry / wet pulverize and classify, and to adjust the particle size for each grade, making it relatively inexpensive. It is impossible to completely classify.
- a mineral mainly composed of naturally occurring dolomite is finely pulverized to an average particle diameter of 3. ⁇ ⁇ or less and a maximum particle diameter of 25 m or less, or such a finely pulverized material is used.
- a composition for a food material has been proposed (Japanese Patent Laid-Open No. 11-113352).
- Japanese Patent Laid-Open No. 11-113352 Japanese Patent Laid-Open No. 11-113352
- dolomite is thermally decomposed, and magnesium oxide and calcium oxide are by-produced.
- the synthesis conditions for the above dolomite compounds are such that the ion concentration in the solution is Ca ion 50 mmol / l, Mg ion 2 14 O mrao l / 1, and the Mg ion is about 4% of Ca ion. It is industrially disadvantageous because it requires 0 times and is a dilute system.
- the synthetic dolomite obtained by the conventional hydrothermal method has a BET specific surface area of about
- the present invention has a high whiteness, a large surface area, and a large particle size without the need for high-pressure equipment exceeding 10 atmospheres or special synthesis conditions and operations at high temperature and pressure. It provides simple synthetic dolomite compounds at low cost.
- the present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, the presence of at least one kind selected from an alkali metal salt, an alkaline earth metal salt, and a complex-forming substance in a reaction system has resulted in a pressure of 10 atm. It was found that a synthetic dolomite compound having a high whiteness, a large surface area, and a small number of coarse particles could be obtained under normal temperature and normal pressure without depending on special equipment and reaction conditions of high temperature and high pressure exceeding It was completed. Disclosure of the invention
- the first is the present invention, the general formula C a, - x Mg x C 0 3 expressed as a synthetic Doromai preparative such reduction if that satisfies the below SL formula (a) ⁇ (c)
- the contents are things.
- a second aspect of the present invention is to produce a dolomite compound by blowing carbon dioxide gas into an aqueous suspension in which a sparingly soluble calcium and a hardly soluble magnesium are mixed. At least one selected from alkaline earth metal salts and complex-forming substances is contained in an amount of 0.1 to 100 parts by weight with respect to 100 parts by weight of the hardly-soluble calcium, and carbonated at a reaction temperature of 0 to 80 ° C.
- a method for producing a synthetic dolomite compound characterized by performing a chemical reaction and then aging.
- FIG. 1 is a SEM photograph (magnification: ⁇ 10,000) of the synthetic dolomite compound particles E1.
- FIG. 2 is an X-ray diffraction pattern of the synthetic dolomite compound particles E1.
- Figure 3 is an illustration of an apparatus for measuring the coefficient of wear of a film BEST MODE FOR CARRYING OUT THE INVENTION
- X of the synthetic dolomite compound of the present invention is adjusted by the charging ratio of sparingly soluble calcium and sparingly soluble magnesium.
- the BET specific surface area (S w1) of the synthetic dolomite compound of the present invention by a nitrogen adsorption method is 10 ⁇ S w1 ⁇ 5 0.0 m 2 / g.
- the BET specific surface area (Sw l) is less than 1 Om 2 / g, the ink absorption becomes low and it is not suitable for an ink receiver.
- it is preferably 20 to 400 m 2 / g, and more preferably 25 to 300 m 2 / g.
- the BET specific surface area of the synthetic dolomite compound of the present invention can be increased by adding a complex-forming substance at the time of compounding.
- the interplanar spacing ( ⁇ ) of the (104) plane of the synthetic dolomite compound of the present invention measured by an X-ray diffractometer is 2.88 to 3.00. If ⁇ is less than 2.88, magnesium carbonate is by-produced, while if ⁇ is more than 3.0, calcium carbonate is by-produced, which is not preferred because the purity of synthetic dolomite decreases. Therefore, it is more preferably 2.88 to 2.98, and still more preferably 2.88 to 2.95.
- the surface spacing ( ⁇ ) is linked to the value of X described above, so that changing the value of X also changes the value of the surface spacing ( ⁇ ).
- the average volume particle diameter (dx 1) is not particularly limited, but is usually preferably from 0.01 to 20. If the average volume particle diameter is less than 0.01 m, the cohesive force becomes stronger due to the small size of the particles themselves, which tends to cause coarse particles due to agglomeration. On the other hand, if it exceeds 10%, the transparency tends to decrease when added to the resin. Therefore, more preferably
- It is preferably from 0.05 to 15 m, more preferably from 0.05 to 10 m.
- the average volume particle diameter of the synthetic dolomite compound of the present invention is adjusted by the amount of the complex-forming substance added during compounding, the peripheral speed, and the compounding temperature.
- the average volume particle diameter decreases as the amount of the complex-forming substance added increases, decreases as the peripheral speed increases, and decreases as the compounding temperature increases.
- the average volume particle size was measured by observing the particles with an electron microscope, and then using a coordinate reader (digitizer) to read the major and minor diameter portions of each particle. The average volume particle diameter is calculated.
- the aspect ratio (iS) of the synthetic dolomite compound of the present invention is not particularly limited, but is preferably 1 to 30.
- 1.5 to 30 is preferable, more preferably 2.0 to 25, and still more preferably 2.5 to 30 to give sufficient rigidity and prevent particle collapse during kneading. It is 20.
- 1 ⁇ ⁇ ⁇ i.5 is preferred, more preferably 1-1.3, and still more preferably 1-1.2.
- the whiteness (hue) of the synthetic dolomite compound of the present invention is not particularly limited, it is usually preferable that the L value is 70 or more and the b value is 5 or less.
- the measurement was carried out using a colorimeter (ND-1001DP) manufactured by Nippon Denshoku Industries Co., Ltd.
- the powder was mixed with DOP at a ratio of 100 parts by weight to 50 parts by weight, and the mixture was made into a paste to form a paste.
- the synthetic dolomite compound of the present invention When the synthetic dolomite compound of the present invention is used to produce a dolomite compound by blowing carbon dioxide gas into an aqueous suspension in which sparingly soluble calcium and sparingly soluble magnesium are mixed, an alkali metal salt is added to the aqueous suspension. At least one selected from the group consisting of alkaline earth metal salts and complex-forming substances is contained in an amount of 0.1 to 100 parts by weight with respect to 100 parts by weight of sparingly soluble calcium, and carbonated at a reaction temperature of 0 to 8 ° C.
- the compound can be synthesized by carrying out a chemical reaction and then aging.
- the hardly soluble calcium used in the present invention is not particularly limited, and examples thereof include calcium hydroxide, calcium oxide, and calcium carbonate. These sparingly soluble lysiums may be used alone or in combination of two or more.
- the hardly soluble magnesium used in the present invention is not particularly limited, and examples thereof include magnesium hydroxide, magnesium oxide, magnesium carbonate and the like. These hardly soluble magnesium may be used alone or in combination of two or more as necessary.
- the hardly soluble calcium and the hardly soluble magnesium include those obtained by converting a water-soluble calcium salt or a magnesium salt into a hardly soluble one with an alkali or the like in a reaction vessel.
- the BET specific surface area of the poorly soluble magnesium used in the present invention is not particularly limited, but is usually preferably 5 to 200 m 2 / g . If the BET specific surface area of the poorly soluble magnesium is less than 5 m 2 / g, the reactivity of the poorly soluble magnesium is lower than that of the poorly soluble calcium, so that it is difficult to form a composite, and magnesium carbonate and calcium carbonate are by-produced. It will be easier. On the other hand, 200 m 2 / g If it exceeds, the reactivity of poorly soluble calcium is low, so that magnesium carbonate and calcium carbonate are easily produced as by-products. Therefore, it is more preferably 30 to 180 m 2 / g, and still more preferably 50 to 150 m 2 / g.
- the alkali metal salt used in the present invention includes sodium chloride, sodium bromide, sodium iodide, sodium nitrate, potassium chloride, potassium bromide, potassium iodide, potassium nitrate, and the like. Alternatively, they may be used in combination of two or more as necessary.
- alkaline earth metal salt used in the present invention examples include calcium chloride, calcium bromide, calcium nitrate, strontium chloride, sodium nitrite, barium chloride, barium nitrate, magnesium chloride, magnesium bromide, and magnesium nitrate. These are used alone or in combination of two or more as necessary.
- Examples of the complex-forming substance used in the present invention include hydroxycarboxylic acids such as citric acid, malic acid and oxalic acid, and metal salts thereof, alkaline earth metal salts and ammonium salts; and polycarboxylic acids such as gluconic acid and tartaric acid.
- hydroxycarboxylic acids such as citric acid, malic acid and oxalic acid, and metal salts thereof, alkaline earth metal salts and ammonium salts
- polycarboxylic acids such as gluconic acid and tartaric acid.
- Ketones sulfuric acid and its alkali metal salts, alkaline earth metal salts and ammonium salts; When used in the field it is preferably Kuen acid, malic acid. These are used alone or, if necessary, in combination of two or more.
- the addition amount of these metal salts and / or complex-forming substances is preferably from 0.1 to 100 parts by weight based on 100 parts by weight of the poorly soluble rubber. 0. Single If it is less than the amount, it will not be compounded, and carbonic acid limestone and magnesium carbonate
- the timing of the addition may be before the carbonation reaction or during the carbonation reaction, and may be added both before and during the reaction.
- the reaction temperature is between 0 and 80 ° C. If the reaction temperature is lower than 0 ° C, it is easily frozen and carbonation is not carried out smoothly.On the other hand, if the reaction temperature is higher than 80 ° C, the absorption efficiency of carbon dioxide decreases, so that it is difficult to form a complex and calcium carbonate is reduced. By-product.
- the reaction temperature is in the range of 0 to 25 ° C, a synthetic dolomite compound having a large aspect ratio is easily obtained, and when the reaction temperature is in the range of more than 25 ° C to 80 ° C or less, the aspect ratio is low. It is easy to obtain synthetic dolomite compounds with small size. Therefore, the temperature is preferably 0 to 60 ° C, more preferably 0 to 50; and still more preferably 5 to 40 ° C.
- the temperature during ripening in the production of the synthetic dolomite compound of the present invention is not particularly limited, but is usually preferably 180 ° C or lower. If the temperature exceeds 180 ° C, a large-scale pressure-resistant facility is required, which increases the cost industrially and complicates the operation, which is not preferable.If the lower limit is too low, the speed of compounding will decrease.
- the temperature is preferably about 20 ° C. because the time becomes longer.
- Carbon dioxide flow rate 500 to 400 L / hr
- the concentration of the water-insoluble mixed water suspension of (1) is not particularly limited, but is usually preferably 0.5 to 20% by weight.
- concentration of the hardly soluble calcium or the hardly soluble magnesium mixed water suspension is less than 0.5% by weight, the productivity is low and the cost tends to be high.
- concentration of the hardly soluble calcium or the hardly soluble magnesium mixed water suspension is less than 0.5% by weight, the productivity is low and the cost tends to be high.
- it exceeds 20% by weight the viscosity becomes too high during the reaction, and stirring tends to be difficult. Therefore, more rather preferably has 1-1 5 weight 0/0, more preferably from 2 to 1 0 weight 0/0.
- the flow rate of the carbon dioxide gas in (2) is not particularly limited, but is usually preferably 500 to 400 L / hr per 1 kg of the total of the hardly soluble calcium and the hardly soluble magnesium.
- the flow rate of carbon dioxide gas is less than 50 OL / hr, carbon dioxide and magnesium magnesium carbonate is easily produced as a by-product. It is not preferable because it is easy to become.
- the pH of the suspension at the end of the reaction (3) is not particularly limited, but is usually preferably 6.0 to 9.0. If the pH is less than 6.0, the carbonation reaction has already been completed, so there is no need for further carbonation. On the other hand, if it exceeds 9.0, unreacted hardly soluble magnesium tends to remain, which is not preferable. Therefore, it is more preferably 6.5 to 8.
- the peripheral speed of the stirring blade in (4) is not particularly limited, but is usually preferably 0.1 to 5 m / sec in order to increase the efficiency of the carbonation reaction. If the peripheral speed is less than 0.1 m / sec, it tends to be insufficient to increase the efficiency of the carbonation reaction, while if it exceeds 50 m / sec, the cost tends to increase, which is not preferable.
- the concentration of carbon dioxide in 5 is not particularly limited, but usually, in order to efficiently carry out the carbonation reaction (this is preferably 15 to 100% by weight. If the amount is less than 15% by weight, the carbonation reaction takes a long time to produce. Efficiency tends to decrease, and the efficiency of complexation also decreases, so that magnesium carbonate and calcium carbonate are easily produced as by-products.
- reaction temperature is 0 to 80 ° C. If the reaction temperature is lower than 0 ° C, it is easy to freeze and carbonation is not carried out smoothly. If the reaction temperature is higher than 80 ° C, the absorption efficiency of carbon dioxide gas decreases, so that it becomes difficult to form a complex and carbon dioxide Calcium is a by-product.
- the aging temperature of 7 is not particularly limited, but is preferably 20 to 180 ° C. If the aging temperature is lower than 20 ° C., it is not preferable because complexing does not easily proceed and a long time tends to be required. On the other hand, when the temperature exceeds 180 ° C., the pressure exceeds 10 atm, which requires a high pressure-resistant facility, and the operation is complicated and the cost tends to be high. Therefore, the temperature is more preferably 40 to 170 ° C, and most preferably 50 to 150 ° C.
- the ripening time of 8 is influenced by the production conditions of 1 to ⁇ above, and the ripening time is not particularly limited, but is usually 0.1 to 240 hours.
- the aging time is less than 0.1 hour, it is difficult to obtain a synthetic dolomite compound.
- the time is more preferably 0.2 to 120 hours, and still more preferably 0.5 to 60 hours.
- the surface treatment amount is not particularly limited because it depends on the BET specific surface area of the synthetic dolomite compound, but is usually 0.1 to 200% by weight based on the synthetic dolomite compound.
- the surface treatment amount is less than 0.1% by weight, when added to a synthetic resin, it is difficult to obtain sufficient dispersibility and stability of the particles.
- the surface treatment amount exceeds 200% by weight, the surface treatment agent is easily released. It is not preferable because it becomes difficult.
- the surface treating agent is not particularly limited, but usually, a water-soluble surfactant, a water-soluble stabilizer, and a surface modifier can be used, and these are used alone or in combination of two or more as necessary. .
- water-soluble surfactant examples include a salt of a monoolefin of maleic acid (having 4 to 8 carbon atoms) copolymer (sodium, polyamide, ammonium, etc.), and a copolymer of maleic acid and styrene (sodium, polyamide, etc.).
- Polymers such as sodium salt of polystyrene and sodium polystyrene sodium sulfonate; condensates of sodium naphthylene sulfonate formalin, alkyl condensates of sodium naphthylene sulfonate and sodium melamine sulfonate Polycondensates such as sodium formalin condensate; natural products (derivatives) such as sodium ligninsulfonate; salts of polyacrylic acid (sodium, potassium, ammonium, etc.), and acrylic acid-maleic acid copolymer (sodium) , Potassium, ammonium, etc.) carboxylic acid-based polymers such as salts; Condensed inorganic substances such as sodium and sodium hexametaphosphate; and other common anionic surfactants, cationic surfactants, sucrose fatty acid esters (having an HLB of 8 or more), monoglycerin, etc.
- oligomers such as sodium salt of polyst
- Glycerin fatty acid esters such as glycerin, penglycerin, hexaglycerin, and decaglycerin; crude lecithin derived from soybean and egg yolk;
- Non-ionic surfactants such as lecithin and enzymatically-decomposed lecithin, nonionic surfactants represented by sorbitan fatty acid esters and the like can be exemplified, and these can be used alone or in combination of two or more as necessary.
- water-soluble stabilizer examples include acid-treated starch, alkali-treated starch, oxidized starch, cyclodextrin, dextrin, enzyme-treated starch, phosphorylated ester starch, acetate ester starch, octenyl succinate starch, and etherified starch.
- Modified starches such as cross-linked starch, etc., peram gum, carrageenan, sodium alginate, propylene glycol alginate, guar gum, diurane gum, karaya gum, pectin, agar, sodium carboxymethylcellulose, methylcellulose, tamarind gum, gaddy gum, tragacanth gum , Xanthan gum, pullulan, cassia gum, oral cast bean gum, gum arabic, arabinogalactan,ute gum, chitosan and other thickening polysaccharides, galactose Soybean polysaccharides extracted from soybeans such as galacturonic acid, rhamnose, xylose, fucose, glucose, etc., sucrose, trehalose, trehalulose, maltose, cellobiose, lactose, xylobiose, isomaltose, melibiose, palatinose, gentiobiose Mal
- Synthetic water-soluble polymers such as phosphate, polybutyl alcohol, acrylic acid polymer, ethyleneimine polymer, polyethylene oxide, polyacrylamide, polystyrene sulfonate, polyamidine, isoprene sulfonic acid polymer, etc. These may be used alone or as needed.
- Examples of the surface modifier include silane coupling agents, coupling agents such as titanate coupling agents, alicyclic carboxylic acids represented by naphthenic acid, resins represented by abietic acid, pimaric acid, pimaric acid, parastric acid, and neoabietic acid.
- organic acids such as acrylic acid, methacrylic acid, oxalic acid, citric acid, and caprylic acid
- Saturated fatty acids such as lauric acid, myristic acid, palmitic acid and stearic acid, unsaturated fatty acids such as oleic acid, elaidic acid, linoleic acid and ricinoleic acid, cellulose compounds and silixane compounds.
- these metal salts or ammonium salts may be used. These are used alone or, if necessary, in combination of two or more.
- the surface treatment method using the surface treatment agent is not particularly limited.
- the surface treatment is performed with a stirring force or concentration capable of uniformly stirring a predetermined amount of the aqueous suspension of synthetic dolomite compounds. What is necessary is just to mix an agent enough. Further, a preparation method for further improving the dispersibility of particles by a mechanical wet dispersion treatment is also possible.
- wet dispersing machines include wet mills such as Dyno mill, bead mill, Apex mill, sand mill, Koball mill, etc .; Can be exemplified.
- the powder is formed after the surface treatment, the powder is dried using a spray drier or a box drier to obtain the synthetic dolomite as the object of the present invention.
- Compounds can be prepared.
- the compound dolomite compound of the present invention can be treated at a temperature equal to or higher than the melting point of the above-mentioned surface treatment agent using a Hensper mixer, a tumbler mixer, a kneader, or the like.
- the electrical conductivity of the filtration is not particularly limited, it is usually preferably 1 OmS / cm or less. It is more preferably 1 mS / cm or less, and further preferably 500 iS Zcm or less.
- washing and concentration can be carried out using a thickener, an Oliver, a low filter, a Larox press or the like.
- the novel synthetic dolomite compound of the present invention is blended with various resins such as a molding resin, a coating resin, an ink resin, a sealant resin, an adhesive resin, and the like.
- the resin composition has properties and physical properties.
- the molding resin is not particularly limited.
- ABS resin fluororesin, polyethylene terephthalate, polycarbonate, polyethylene, polypropylene, ethylene-propylene copolymer, copolymer of ethylene or propylene and other monomers
- polyolefin resins such as coalesced resins, polystyrene resins, ataryl resins, methacrylic resins, butyl chloride resins, vinylidene chloride resins, polyamide resins, polyether resins, vinyl acetate resins, polyvinyl alcohol resins, etc.
- thermoplastic resins and thermosetting resins such as phenol resins, urea resins, melamine resins, epoxy resins, polyurethane resins, polyimide resins, and the like. 2 or more combinations It is also possible to use.
- the mixing ratio of the synthetic dolomite compound and these resins is not particularly limited, and may be appropriately determined according to desired physical properties.
- the synthetic dolomite compound is usually used in an amount of 100 parts by weight of the resin. 0.05 to 70 parts by weight is preferred. It goes without saying that various additives such as a stabilizer may be added to the resin composition.
- the coating resin is not particularly limited, but is a solvent system represented by an alkyd resin, an acrylic resin, a vinyl acetate resin, a urethane resin, a silicone resin, a fluororesin, a styrene resin, a melamine resin, an epoxy resin, etc.
- alkyd resins For coating resins and water-based coatings, alkyd resins, acrylic resins, latex resins, butyl acetate resins, urethane resins, silicone resins, fluororesins, styrene resins, melamine resins, epoxy resins and other emulsion resins for general coatings , Alkyd resin, amine resin, styrene alcohol resin, amino alkyd resin, polybutadiene resin, etc., water-soluble resin for general coating, dispersion resin for coating prepared by blending emulsion resin and water-soluble resin, cross-linking Water-soluble resin as emulsifier Dispersion resin, acrylic hydrosol and the like can be exemplified, and these can be used alone or in combination of two or more as needed.
- the mixing ratio of the synthetic dolomite compound and these resins is not particularly limited, and may be appropriately determined according to desired physical properties.
- the synthetic dolomite compound is usually used in an amount of 100 parts by weight of the resin. 5 to 30 parts by weight are preferred.
- Various additives such as a plasticizer and a dispersant may be added to the resin composition.
- paper resin examples include, but are not particularly limited to, water-soluble, water-dispersible, and solvent-dispersible resins such as alcohol.
- PVA or its modified products cation modified, anion modified, silanol modified
- Starch or its modified product oxidation, etherification
- gelatin or its modified product casein or its modified product, carboxymethylcellulose, gum arabic, hydroxyethyl cellulose, hydroxypropylmethylcellulose, etc.
- cellulose derivatives SBR latex, NBR latex, methyl Conjugated copolymer copolymer latex such as methyl acrylate butadiene copolymer, functional group-modified polymer latex
- vinyl copolymer latex such as ethylene vinyl acetate copolymer, polyvinylpyrrolidone, maleic anhydride Or, a copolymer thereof, an acrylate copolymer and the like
- these can be used alone or in combination of two or more as needed.
- the compounding ratio of the synthetic dolomite compound and these resins is not particularly limited, and may be appropriately determined according to desired physical properties, and various additives such as a thickener and a dispersant may be added. Of course.
- the resin for the ink is not particularly limited, but may be rosin-modified phenol resin, urea resin, melamine resin, ketone resin, polyvinyl chloride resin, polychlorinated vinyl monoacetate copolymer, butyral resin, and styrene resin. Ren-maleic acid resin, chlorinated polypropylene, acrylic resin, bear mouth resin, petroleum resin, polyester resin, alkyd resin, polyamide resin, epoxy resin, polyurethane resin, nitrocellulose, ethylcellulose, ethylhydroxyl Examples thereof include cellulose, cyclized rubber, and chlorinated rubber, and these can be used alone or in combination of two or more as necessary.
- the mixing ratio of the synthetic dolomite compound and these resins is not particularly limited and may be appropriately determined according to the desired physical properties.
- the synthetic dolomite compound is usually added to 100 parts by weight of the resin. 5 to 200 parts by weight are preferred.
- Various additives such as stabilizers and dryers may be added to the resin composition. Of course.
- the resin for the sealant is not particularly limited, but examples thereof include a polyurethane resin, a polysulfide resin, a silicone resin, a modified silicone resin, a polyisobutylene resin, an epoxy resin, and a polyester resin. Alternatively, two or more types can be used in combination as needed.
- the mixing ratio of the synthetic dolomite compound and these resins is not particularly limited, and may be appropriately determined according to desired physical properties.
- the synthetic dolomite compound is usually used in an amount of 100 parts by weight of the resin. 50 to 120 parts by weight are preferred. Needless to say, various additives such as a colorant and a stabilizer may be added to the resin composition.
- the resin for the adhesive is not particularly limited, but examples thereof include a urea resin, a phenol resin, an epoxy resin, a silicone resin, an acrylic resin, a polyurethane resin, and a polyester resin. It is also possible to use two or more types in combination according to the requirements.
- the mixing ratio of the synthetic dolomite compound and these resins is not particularly limited, and may be appropriately determined according to desired physical properties.
- the synthetic dolomite compound is usually used in an amount of 100 parts by weight of the resin. 50 to 120 parts by weight are preferred. It goes without saying that various additives such as a stabilizer and a plasticizer may be added to the resin composition.
- the synthetic dolomite compound of the present invention includes colloidal calcium carbonate, heavy calcium carbonate, colloidal silica, talc, kaolin, zeolite, resin balloon, and the like in order to adjust the viscosity and other physical properties of the synthetic resin.
- Fillers such as glass balloons, plasticizers such as dioctyl phthalate and dibutyl phthalate, petroleum solvents such as toluene and xylene, and acetone Solvents such as ketones such as ton, methyl ethyl ketone, etc., ether esters such as cellosolve acetate, or additives such as silicone oil, fatty acid ester-modified silicone oil, etc., one or more kinds of coloring agents, etc. It is possible to add them in combination.
- the synthetic dolomite compound of the present invention When added to a curable resin represented by, for example, a sealant or an adhesive, it has excellent viscosity, thixotropic properties, slip resistance, and joint followability.
- a curable resin represented by, for example, a sealant or an adhesive
- it has excellent viscosity, thixotropic properties, slip resistance, and joint followability.
- a paint when blended in a paint, it has excellent anti-sagging properties, high gloss, high transparency, and high coating strength, and when blended in a printing sheet, it has excellent ink fixability.
- the strength of the eld line surface is prevented from lowering, and it has excellent strength.
- blended in a film When blended in a film, it has excellent transparency, blocking resistance, and scratch resistance Has wear resistance.
- the synthetic dolomite compound of the present invention is used as a calcium and magnesium strengthening agent in liquid foods such as milk, processed milk, milk drinks, fruit juice, coffee, tea, cream, alcoholic drinks such as wine and sake, cooked rice, pudding, and jelly. , Yogurt, candy, snacks, bread, and food. Further, other components such as an emulsifier, an organic acid, an amino acid, a coloring agent, a fragrance, a seasoning, and the like can be added.
- the synthetic dolomite compound of the present invention may be a dispersion of a sparingly water-soluble calcium salt such as calcium carbonate or phosphate, or a water-soluble calcium salt such as lactic acid or chloride, and / or magnesium carbonate. It can be used in combination with water-soluble magnesium salts such as magnesium phosphate, magnesium hydroxide dispersion and magnesium chloride, magnesium nitrate, and magnesium sulfate.
- FIG. 1 shows an SEM photograph of the synthetic dolomite compound particles E1
- FIG. 2 shows an X-ray diffraction pattern of the synthetic dolomite compound E1.
- Natural dolomite (manufactured by Shimizu Corporation) was suspended in water at a concentration of 20% by weight. Next, this suspension was wet-pulverized using a Dyno mill, dried in a dry atmosphere at 700 ° C. or lower, and crushed to obtain natural dolomite particles C 2. Table 3 shows the characteristics of the natural dolomite particles.
- Table 3 shows the characteristics of the synthetic dolomite compound particles C4.
- Synthetic dolomite compound E1 was dispersed in ion-exchanged water to obtain a 15% by weight aqueous solution.
- polyvinyl alcohol (Gosenol GH17 manufactured by Nippon Synthetic Chemical Industry) was dissolved in ion-exchanged water to obtain a 10% by weight aqueous solution.
- the aqueous solution of the ion fixing compound and the aqueous solution of polyvinyl alcohol were mixed and stirred at a weight ratio of 4.5: 1 to obtain a coating liquid.
- This coating solution was die-coated on one side of a 100 ⁇ m thick transparent polyethylene terephthalate film using a coater and a hot air drying oven, and then dried at 120 ° C to receive a 10 m thick ink.
- a print sheet having a layer formed was prepared.
- a photographic paper sheet was prepared in the same manner except that the synthetic dolomite compound E1 of Application Example 1 was changed to E2 to E8 and C1 to C4.
- the total light transmittance (%) of the printing sheet was measured using a haze meter (NDH-100D0 manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with JIS K-7105.
- the presence or absence of cracks on the surface of the printing sheet was checked by blindness according to the following criteria.
- the created print sheet was mounted on a paper feed tray of a printer (HP Corporation's Deskjet 1200C), and ink jet recording was performed in a single or three primary color print mode.
- the following printing characteristics presence of bleeding, bleeding, beading, mottling
- solid printing was performed using single color or three primary color solid prints, and the presence or absence of bleeding, bleeding, beading, and mottling was visually observed.
- the printing sheet using the synthetic dolomite compound of the present invention has extremely excellent ink fixing property.
- Application Examples 9 to 16 are ethylene glycol slurries of E1 to E8,
- Application Comparative Examples 5 to 8 are ethylene glycol slurries of C1 to C4, and
- Application Comparative Example 9 is a commercially available A-type zeolite. (Product name: Synthetic A-type zeolite, manufactured by Mizusawa Chemical Co., Ltd.)
- Application Comparative Example 10 is a commercially available synthetic silica performed polyesterification glycol slurry was added before polyesterification reaction, 0.1 weight of particles 0/0 intrinsic viscosity containing (ortho chloro Tilia Nord, 3 5 ° C) 0. 6 2 d 1 / g Of polyethylene terephthalate was prepared.
- the polyethylene terephthalate was dried at 160 ° C., melt-extruded at 290 ° C., and rapidly cooled and solidified in a casting drum maintained at 40 ° C. to obtain an unstretched film. Subsequently, the unstretched film was preheated to 70 ° C. with a heating roller, and then stretched 3.6 times in the longitudinal direction while heating with infrared heating. Subsequently, the film was stretched 4.0 times in the transverse direction at a temperature of 90 ° C, and then heat-treated at 200 ° C to obtain a biaxially oriented film having a thickness of 15 °.
- the center line average roughness (R a) is a value defined by JIS-B 0601.
- a stylus type surface roughness meter SURFCORD ER SF-30C of Kosaka Laboratory Co., Ltd. is used. And measure.
- the measurement conditions and the like are as follows.
- Fig. 3 1 is an unwinding reel, 2 is a tension controller, 3, 5, 6, 8, 9, and 11 are free rollers, 4 is a tension detector (entrance), and 7 is stainless steel net SUS304. Fixed bar (outer diameter 5 mm), 10 indicates tension detector (outlet), 12 indicates guide roller, and 13 indicates take-up reel.
- a 1 / 2-inch wide film surface is brought into contact with a stainless steel fixing pin (surface roughness 0.58) with a diameter of 5 mm at an angle of 150 ° at a speed of 2 m / min. Reciprocate and rub (at this time, the inlet tension T1 is 60 g). This operation is repeated, and the degree of scratches generated on the friction surface after 40 round trips is visually determined. At this time, A shows almost no scratch, B shows little scratch, and Scratch The number of occurrences is determined as D, and the number of occurrences of scratches between C and C is determined in four stages.
- the force renderer is a five-stage force renderer consisting of a nip roll and a steel roll.
- the processing temperature is 80 ° C
- the linear pressure applied to the film is 200 kg / cm
- the film speed is 5 Om / min.
- Grade 1 16 or more Grade 2: 12 to 15
- Application Examples 17 to 24 are E1 to E8 particles
- Application Comparative Examples 11 to 14 are C1 to C4 particles
- Application Comparative Example 15 is a commercially available A-type zeolite (trade name)
- a polypropylene composition was prepared in the following manner as a blank to which no particles were added, a biaxially oriented polypropylene film was obtained, and the quality was evaluated. Table 6 shows the results.
- the pellets were formed into a sheet-like film using an extruder, and stretched 5 times in the longitudinal direction and 10 times in the transverse direction to finally obtain a stretched film having a thickness of 3 Om.
- One surface of the stretched film was subjected to corona discharge treatment.
- the film transparency was measured by stacking four films in accordance with ASTM-D-103.
- shopper type test The machine was pulled at a pulling speed of 50 Omm / min using a machine, and the maximum load was read and evaluated.
- Comparative Example 1 Siliency 0.15 13.7 1050 5.1 Comparative Example 1 ⁇ 2.0 2400 1.0
- the synthetic dolomite compound of the present invention is- For example, when used for polyester, a good film with excellent slipperiness and abrasion resistance and with few coarse protrusions can be obtained.When used for polyolefin film, good transparency and scratch resistance together with good anti-blocking function are obtained. A polyolefin film having properties can be obtained. Industrial applicability
- the synthetic dolomite compound of the present invention has a high whiteness, a large surface area, and a small number of coarse particles.
- a printing sheet having excellent ink fixing properties is provided.
- a film having excellent transparency, blocking resistance, scratch resistance, abrasion resistance and the like can be provided.
- the synthetic dolomite compound of the present invention can be produced at a lower temperature than the conventional method, the equipment cost is low and the operation is easy.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
- Paints Or Removers (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Claims
Priority Applications (3)
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JP2004535920A JP4434954B2 (ja) | 2002-09-13 | 2003-09-10 | 合成ドロマイト類化合物及びその製造方法 |
AU2003262036A AU2003262036A1 (en) | 2002-09-13 | 2003-09-10 | Synthetic dolomite compound and method for production thereof |
TW092128248A TW200509811A (en) | 2003-09-10 | 2003-10-09 | Synthetic dolomite compound and method for production thereof |
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JP2002267817 | 2002-09-13 | ||
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JP2002-267818 | 2002-09-13 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005320207A (ja) * | 2004-05-10 | 2005-11-17 | Takashi Yasue | 消化ドロマイト粉末とその製造方法 |
US11332650B2 (en) | 2019-11-15 | 2022-05-17 | King Fahd University Of Petroleum And Minerals | Shape-stabilized phase change materials for energy storage based on hierarchically porous calcium magnesium carbonate |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS374103B1 (ja) * | 1959-06-26 | 1962-06-11 | ||
JPS388306B1 (ja) * | 1960-07-30 | 1963-06-07 | ||
JPH10182149A (ja) * | 1996-11-07 | 1998-07-07 | Fuji Chem Ind Co Ltd | 新規なCa・Mg複合炭酸塩類、その製造方法及び制酸剤 |
-
2003
- 2003-09-10 WO PCT/JP2003/011537 patent/WO2004024628A1/ja active Application Filing
- 2003-09-10 AU AU2003262036A patent/AU2003262036A1/en not_active Abandoned
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS374103B1 (ja) * | 1959-06-26 | 1962-06-11 | ||
JPS388306B1 (ja) * | 1960-07-30 | 1963-06-07 | ||
JPH10182149A (ja) * | 1996-11-07 | 1998-07-07 | Fuji Chem Ind Co Ltd | 新規なCa・Mg複合炭酸塩類、その製造方法及び制酸剤 |
Non-Patent Citations (4)
Title |
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KENJI YAMAGUCHI ET AL.: "Suinetsu han'no ni yoru dolomite no gosei to keitai seigyo", THE SOCIETY OF INORGANIC MATERIALS, JAPAN DAI 50 KAI GAKUJUTSU KOENKAI KOEN YOSHISHU, 14 November 2002 (2002-11-14), pages 16 - 17, XP002973839 * |
NORIO WADA ET AL.: "Effects of carboxylic acids on calcite formation in the presence of Mg2+ ions", JOURNAL OF COLLOIDAL AND INTERFACE SCIENCE, vol. 212, 1999, pages 357 - 364, XP002973836 * |
SHIGERU OHDE ET AL.: "Synthesis of protodolomite from aqueous solution at normal temperature and pressure", GEOCHEMICAL JOURNAL, vol. 12, no. 2, 1978, pages 115 - 119, XP002973838 * |
YASUSHI KITANO ET AL.: "Magnesium calcite synthesis from calcium biocarbonate solution containing magnesium and barium ions", GEOCHEMICAL JOURNAL, vol. 13, no. 4, 1979, pages 181 - 185, XP002973837 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005320207A (ja) * | 2004-05-10 | 2005-11-17 | Takashi Yasue | 消化ドロマイト粉末とその製造方法 |
JP4525164B2 (ja) * | 2004-05-10 | 2010-08-18 | 任 安江 | 消化ドロマイト粉末とその製造方法 |
US11332650B2 (en) | 2019-11-15 | 2022-05-17 | King Fahd University Of Petroleum And Minerals | Shape-stabilized phase change materials for energy storage based on hierarchically porous calcium magnesium carbonate |
Also Published As
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AU2003262036A1 (en) | 2004-04-30 |
JP4434954B2 (ja) | 2010-03-17 |
JPWO2004024628A1 (ja) | 2006-01-05 |
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