WO2004094507A1 - 樹脂微粒子の製造方法及び樹脂微粒子 - Google Patents
樹脂微粒子の製造方法及び樹脂微粒子 Download PDFInfo
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- WO2004094507A1 WO2004094507A1 PCT/JP2003/015506 JP0315506W WO2004094507A1 WO 2004094507 A1 WO2004094507 A1 WO 2004094507A1 JP 0315506 W JP0315506 W JP 0315506W WO 2004094507 A1 WO2004094507 A1 WO 2004094507A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/14—Powdering or granulating by precipitation from solutions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Definitions
- the present invention provides a method for producing resin fine particles that can easily obtain resin fine particles having a high sphericity and a uniform particle diameter, resin fine particles obtained by using the method for producing resin fine particles, polyolefin resin fine particles, Related to polyester resin fine particles and acrylic resin fine particles. Background art
- Resin fine particles are widely used in applications such as lubricity-imparting agents, toners, anti-glazing agents for paints, additives for light diffusion, fillers for chromatography, and carriers for immunodiagnostic reagents.
- applications in the IT peripheral field such as substrate particles of spacer conductive fine particles for liquid crystal panels, have been expanding.
- resin fine particles made of polyolefin resin have excellent thermoplasticity, are easy to dispose of, and are inexpensive, and are expected to be used in a wide range of applications.
- polyester resin fine particles have been applied to various uses because they have high strength and are inexpensive. If uncrosslinked polyester resin microparticles can be obtained, excellent performance is expected due to excellent thermoplastic properties and remaining functional groups, and a dramatic expansion of applications can be expected.
- acrylic resin fine particles are widely used in the fields of adhesives and paints.
- the resin fine particles used in the field around I ⁇ such as the base particles of the spacer conductive fine particles for a liquid crystal panel are required to be spherical and have a narrow particle size distribution.
- No. 3 discloses a method in which a monomer dispersion containing droplets of a desired size is prepared in advance, and then the dispersion is introduced into a polymerization tank and polymerized under ordinary stirring to obtain resin fine particles.
- a method for controlling the particle size / size distribution of the particles has been proposed. According to this method, spherical resin particles having a narrow particle size distribution can be produced.
- these methods can be applied only to resins that can be polymerized by these polymerization methods.
- the resin fine particles produced by these methods necessarily contain a surfactant and a suspension stabilizer, they can be used for applications in which the surfactant and the suspension stabilizer are problematic. There was also a problem that I could not. Summary of the Invention
- the present invention provides a method for producing resin fine particles that can easily obtain resin fine particles having a high sphericity and a uniform particle diameter, resin fine particles obtained by using the method for producing resin fine particles, and polyolefin. It is an object to provide fine resin particles, polyester resin fine particles, and acrylic resin fine particles.
- the present invention provides a step 1 of heating and / or pressurizing a mixture of a resin and a fluid that does not dissolve the resin at normal temperature and pressure to bring at least one component of the fluid into a supercritical state or a subcritical state; And 2. depressurizing the fluid by depressurizing the fluid.
- the present invention provides a method for sealing a mixture of a resin and a fluid that does not dissolve the resin at normal temperature and pressure in a pressure-resistant container, and heating the pressure-resistant container to bring at least one component of the fluid into a supercritical state or a subcritical state. And a step 2 of rapidly cooling and decompressing the pressure vessel.
- the fluid preferably contains a liquid that is liquid at normal temperature and normal pressure, and further contains water and / or alcohol. Is preferred. Further, in the method for producing resin fine particles of the present invention, a recycled material can be used as the resin.
- the resin fine particles obtained by using the method for producing resin fine particles of the present invention are also one of the present invention.
- the resin fine particles of the present invention preferably have a particle size of 1 ⁇ or less, a CV value of the particle size of 5% or less, and a sphericity of 1.25 or less. .
- Polyolefin-based resin fine particles composed of a polyolefin-based resin having a weight-average molecular weight of 200,000 or more are also included in the present invention.
- the polyolefin resin preferably has a weight average molecular weight of 100,000 or more.
- Polyolefin-based resin fine particles composed of a polyolefin-based resin having an Ml value of 10 or less are also one aspect of the present invention.
- the polyolefin resin fine particles of the present invention preferably do not contain a surfactant and a suspension stabilizer.
- Polyester resin fine particles made of an uncrosslinked polyester resin are also one of the present inventions.
- the polyester resin fine particles of the present invention preferably do not contain a surfactant and a suspension stabilizer.
- Acryl resin fine particles not containing a surfactant and a suspension stabilizer are also an aspect of the present invention.
- the atalinole resin fine particles of the present invention preferably do not contain sulfonium salts and sulfates.
- the acrylic resin is preferably formed by polymerizing polymethyl methacrylate.
- FIG. 1 is a schematic diagram showing an example of an apparatus for drying in air while dropping a resin particle suspension.
- FIG. 2 is a view showing the distribution of the particle diameter of the resin fine particles obtained in Example 1.
- the present inventors have heated and / or pressurized a mixture of a resin and a fluid that does not dissolve the resin at normal temperature and pressure to bring at least one component of the fluid into a supercritical state.
- Completed the present invention by finding that a resin particle suspension with high sphericity and uniform particle size suspended in a fluid can be obtained by bringing into a subcritical state, then lowering the temperature and releasing the pressure. I came to.
- a fluid in a supercritical or subcritical state has both the diffusivity of a gas and the solubility of a liquid. Therefore, at normal temperature and normal pressure, even if the solvent is a poor solvent for the resin, a supercritical state or a subcritical state becomes a good solvent, and the resin can be dissolved and dispersed. Thereafter, if the temperature is decreased and the pressure is released, the regenerated fluid becomes a poor solvent, and the dissolved resin precipitates. Since the resin was in a very high dispersion state in the fluid in the supercritical state or subcritical state, it is considered that the resin precipitated is extremely small, and the surface tension makes the resin almost spherical. Can be
- the supercritical fluid means a fluid having a condition of not less than a critical pressure (hereinafter, also referred to as Pc) and not less than a critical temperature (hereinafter, also referred to as Tc).
- a subcritical fluid is a state other than the supercritical state, and the pressure and temperature during the reaction, respectively? , T, 0.5, P / Pc 1.0, 0.5 T / Tc, or 0.5 ⁇ P / Pc and 0.5 ⁇ TZTc 1.0 Means the fluid of the condition.
- the preferred pressure and temperature ranges for the above subcritical fluid are 0.6 / P / Pc ⁇ l.0 and 0.6 / T / Tc, or 0.6 ⁇ P / "Pc / 0.6 / 0.6 T / Tc is less than 1.0
- the range of temperature and pressure to become a subcritical fluid is 0.5 ⁇ P / Pc ⁇ 1.0 power 0.5 Where T / Tc or 0.5 and PZP c and 0.5 ⁇ T / T c ⁇ 1.0 where the temperature indicates Celsius, but either Tc or ⁇ is minus in Celsius
- the expression representing the subcritical state is not limited to this.
- the resin is mixed with a fluid that does not dissolve the resin at normal temperature and pressure.
- the resin to which the method for producing resin fine particles of the present invention can be applied is not particularly limited.
- examples thereof include a polyester resin such as polyethylene terephthalate; a polyphenylene ether resin; an alicyclic hydrocarbon resin; a thermoplastic polyimide resin; De resin; polyester imide resin; polyolefin resin; polystyrene resin; Polyamide resin; Polyvinyl alcohol resin; Polyvinyl acetate resin; Polyvinyl chloride resin, poly (meth) acrylate resin such as polymethyl methacrylate; Polyetherimide resin; Polybenzoimidazole resin and the like can be mentioned.
- a polyester resin such as polyethylene terephthalate; a polyphenylene ether resin; an alicyclic hydrocarbon resin; a thermoplastic polyimide resin; De resin; polyester imide resin; polyolefin resin; polystyrene resin; Polyamide resin; Polyvinyl alcohol resin; Polyvinyl acetate resin; Polyvinyl chloride resin
- curable resins such as alkyd resins, furan resins, polyurethane resins, and aniline resins can also be used. These curable resins may be uncrosslinked or crosslinked.
- the resin to which the method for producing resin fine particles of the present invention can be applied not only newly produced resin but also resin recovered by recycling can be used.
- bottles made of uncrosslinked polyethylene terephthalate have been used in large quantities, mainly for beverages, because of their light weight, high strength, and high transparency, and a large amount of waste polyethylene terephthalate is collected along with this.
- the effective use of resources is becoming an important issue.
- Polyethylene terephthalate recovered as PET bottles contains various pigments, and is degraded by hydrolysis during pelletization, etc., so its specific use has not been determined.
- resin fine particles can be produced from uncrosslinked polyethylene terephthalate and the like recovered by such recycling, and thus the recycled resin can be effectively used.
- the shape of the resin is such that the specific surface area (surface area per unit volume) is large.
- the method for increasing the specific surface area is not particularly limited. For example, a powdery resin having a diameter of about 1 to 5 mm is used. And a method using a resin which has been formed into a film of 1 mm or less in advance.
- the fluid is not particularly limited as long as it does not dissolve the resin at normal temperature and normal pressure, but may be a liquid that is liquid at normal temperature and normal pressure such as an organic medium such as water or alcohol, and may be carbon dioxide, It may be a gas at normal temperature and normal pressure such as nitrogen, oxygen, helium, argon, and air, or a mixed fluid thereof. However, it is preferable to contain at least one kind that is liquid at normal temperature and normal pressure. When the fluid is only a gas that is a gas at normal temperature and normal pressure, an extremely high pressure or temperature may be required to dissolve the resin in the fluid.
- At least one component of the fluid constituting the mixed fluid may be in a supercritical state or a subcritical state.
- water and Z or alcohol are preferable.
- Water is a medium that is easy to use, is economical because it is inexpensive, and is also favorable in terms of its impact on the environment.
- Alcohols such as methanol are also preferred for similar reasons.
- isopropanol which is a secondary alcohol, is used, hydrolysis of the hydrolyzable resin can be suppressed.
- saturated, unsaturated, linear, branched, and cyclic saturated hydrocarbons such as hexane, heptane, isobutane, isopentane, neopentane, cyclohexane, and butene;
- Aromatic hydrocarbon organic solvents such as benzene, styrene and xylene; ketone organic solvents such as acetone, isobutyl methyl ketone, isopropyl methyl ketone and methyl ethyl ketone; canoleponic acid such as isovaleric acid and acetic acid Compounds; ether organic solvents such as getinoleate ether, dibutinoether, tetrahydrofuran, and dioxane; ester organic solvents such as ethyl acetate and butyl acetate; amine organic solvents such as hexamethylene diamine Acrylic organic solvents such as
- organic solvents may be partially or wholly modified by halogenation or the like.
- An optimal combination of the resin and the fluid is selected within a range satisfying the above conditions.
- the resin is polyethylene terephthalate, methanol is preferable as the liquid fluid, and when the resin is polymethyl methacrylate, water is preferable as the liquid fluid, and the resin is a polyolefin resin.
- the liquid fluid is preferably a mixed fluid of water and alcohol.
- the mixture of the resin and the fluid is heated and / or pressurized to make the fluid into a supercritical state or a subcritical fluid.
- the fluid is a mixed fluid
- at least one component may be in a supercritical state or a subcritical fluid.
- water becomes supercritical at a temperature of about 374 ° C or more and a pressure of about 22 MPa or more
- methanol becomes a supercritical state at a temperature of about 240 ° C or more and a pressure of about 8 MPa or more. It is known to be.
- the heat-resistant container is not particularly limited, and a conventionally known one can be used. For example, an autoclave or the like can be used.
- the supercritical state or subcritical state is an environment with extremely high activity, and the chemical reaction is greatly accelerated. If the resin is kept in the supercritical state for a long time, reactions such as esterification and acetalization may occur, or decomposition may occur. Reaction may occur. Therefore, it is preferable to set the time in the supercritical state or the subcritical state within a short time such that the resin does not react. For example, in the case of a combination of polyethylene terephthalate and methanol, the temperature is preferably set to 250 ° C. within 5 minutes.
- the mixture of the resin and the fluid in a supercritical state or a subcritical state.
- the method of the stirring is not particularly limited, and a conventionally known method can be used.
- a method using a stirring motor for an autoclave, or a hard sphere which is stable even in a supercritical state or a subcritical state in advance for example, , Steel pole, etc.
- a pressure vessel shakes the pressure vessel in a supercritical or subcritical state.
- the temperature of the fluid is rapidly lowered to release the pressure. If the resin is left in the supercritical or subcritical state for a long time as described above, the resin may react. After a predetermined time has elapsed, the resin can be prevented from reacting by rapidly cooling in a sealed state and returning the temperature to normal temperature and normal pressure.
- the method of quenching is not particularly limited, and examples thereof include a method of air-cooling or water-cooling the pressure-resistant container.
- the resin particles in the obtained suspension are almost perfectly spherical, and the particle size distribution is extremely narrow.
- the method for recovering the resin fine particles from the resin fine particle suspension is not particularly limited, and a conventionally known method can be used. However, depending on the combination of the resin and the fluid, the obtained resin fine particle suspension may have a sticky feeling.In this case, when collecting the resin fine particles, make sure that the resin fine particles do not coalesce with each other.
- a method in which the suspension of resin fine particles is dropped and heated in the air using a heat source such as hot air or far-infrared light, or a method in which the resin fine particle suspension is once washed with a nonpolar solvent and then dried is suitable.
- Fig. 1 shows an example of an apparatus that heat-drys in the air while dropping the above resin particle suspension.
- a mixture of a resin and a fluid that does not dissolve the resin at normal temperature and normal pressure is heated and / or pressurized so that at least one component of the fluid is brought into a supercritical state or a subcritical state.
- a suspension of resin fine particles that are almost perfectly spherical and have a narrow particle size distribution can be obtained.
- a series of steps can be performed by controlling only the temperature by using a sealed pressure-resistant container. Furthermore, if the production conditions are adjusted, the thermal decomposition of the resin hardly occurs. Therefore, if a high-molecular-weight resin is used as a raw material, almost the same high-molecular-weight resin fine particles can be obtained.
- the high molecular weight and high molecular weight can be obtained.
- Resin fine particles having a narrow molecular weight distribution can also be obtained.
- the resin fine particles obtained by using the method for producing resin fine particles of the present invention are also one of the present invention.
- the average particle diameter of the resin fine particles of the present invention is not particularly limited, but is preferably 1 ⁇ or less. If it exceeds ⁇ , aggregation may easily occur and dispersion stability may not be maintained.
- the lower limit of the average particle size is not particularly limited, but is preferably 50 nm or more. If it is less than 50 nm, handling properties may be deteriorated.
- the resin fine particles of the present invention preferably have a particle size CV value of 5% or less.
- the CV value is equal to or less than 5%
- the resin fine particles of the present invention have uniform properties, such as spacers, high heat-sensitive filters, and uniformity in the IT peripheral field. It can be suitably used for various uses such as a crystal nucleating agent. It is more preferably at most 3%.
- the CV value of the above particle diameter is determined by the following equation.
- ⁇ Represents the standard deviation of the particle diameter
- Dn the number average particle diameter
- the resin fine particles of the present invention preferably have a sphericity of 1.25 or less. If the sphericity is 1.25 or less, for example, extremely high connection stability can be obtained when plating is used to make conductive fine particles and the like and used for connection of electrodes. It can be used for many applications, such as obtaining a highly accurate gap when used as a spacer. More preferably, it is 1.1 or less.
- the sphericity is a parameter indicating the degree of deviation (deviation) from the geometric sphere. The closer the value is to 1, the closer to a sphere.
- the sphericity can be measured by measuring an image taken by a method such as a three-dimensional scan by image analysis using a computer or the like.
- resin fine particles of the present invention When three-dimensional scanning or the like cannot be used, an image captured by a two-dimensional scanning or the like can be substituted with the roundness measured by image analysis using a computer or the like.
- spherical resin fine particles having a uniform particle diameter can be obtained very easily for most resins.
- high-molecular-weight polyolefin-based resin fine particles, polyester-based resin fine particles composed of an uncrosslinked polyester-based resin, and acrylic resin containing no surfactant or suspension stabilizer Fine particles and the like were virtually impossible to produce using conventional production methods, despite their expected applications.
- Polyolefin-based resin fine particles composed of a polyolefin-based resin having a weight-average molecular weight of 200,000 or more are also included in the present invention.
- the weight average molecular weight of the polyolefin resin is less than 200,000, the obtained polyolefin resin fine particles of the present invention cannot maintain a solid shape or become sticky. It cannot be used for applications.
- Preferably it is 800,000 or more.
- an ultra-high molecular weight compound having a molecular weight of 100,000 or more various properties such as high strength can be obtained, and bleeding of low molecular weight components is small, so that it is particularly suitable for biochemical applications. Can be demonstrated.
- the Ml value is usually substituted for the molecular weight.
- the polyolefin resin has an Ml value of 10 or less.
- Polyolefin resin fine particles comprising a polyolefin resin having an Ml value of 10 or less are also one aspect of the present invention.
- the Ml value is the number of grams of thermoplastic resin extruded at a temperature of 190 ° C through a 2.095 mm orifice with a load of 126 g in 10 minutes. It is.
- Resin fine particles made of such a high-molecular-weight polyolefin-based resin were practically impossible to produce by the conventional method. According to the production method described above, a product having a uniform particle diameter and a high sphericity can be easily produced.
- the polyolefin-based resin fine particles produced by the method for producing resin fine particles of the present invention do not contain a surfactant and a suspension stabilizer, and thus are suitably used for biochemical applications such as protein carriers. be able to.
- the polyolefin resin is not particularly limited, and examples thereof include low-density polyethylene, high-density polyethylene, polypropylene, polyisobutylene, and polyethylene-polypropylene copolymer.
- the particle size of the polyolefin-based resin fine particles of the present invention is 100 / zm or less. Is preferred. If it exceeds 100 ⁇ m, it cannot be used for applications such as IT related fields and diagnostics fields. In particular, when the particle size is 1 m or less, the property of water dispersibility that is not present in conventional polyolefin-based resin fine particles is exhibited, and application to diagnostic agents and completely new applications can be expected.
- the polyolefin resin fine particles of the present invention preferably have a CV value of 5% or less in particle diameter. If it exceeds 5%, the particle diameter becomes non-uniform. For example, when the conductive fine particles are used for connection of electrodes by performing plating, connection stability may be lacked.
- the CV value is uniform to 5 ° / 0 or less, the obtained polyolefin-based resin fine particles of the present invention have uniform properties such as melting temperature. When used for such purposes, it can impart the property of a sharp melt that melts rapidly in a specific temperature range.
- the polyolefin-based resin fine particles of the present invention have a sphericity of 1.25 or less. If the sphericity is 1.25 or less, for example, extremely high connection stability can be obtained when plating is used to make conductive fine particles and the like and used for connection of electrodes, or a gap that forms a gap in the liquid crystal substrate can be obtained. It can be applied to many applications, such as obtaining a highly accurate gap when used as a spacer. More preferably, it is 1.1 or less.
- the polyolefin-based resin fine particles of the present invention can be used as a slippery agent, a toner, an anti-glazing agent for paint, an additive for light diffusion, an anti-blocking material for a packaging material made of low-density polyethylene, an insulating film, and a crystal. It can be used for various purposes such as a nucleating agent, a packing material for chromatography and a carrier for immunodiagnostic reagents. Further, the polyolefin-based resin fine particles of the present invention are also suitable as a filler mixed with a polyolefin-based resin. Normally, polyolefin-based resins have low polarity and it is difficult to uniformly disperse fillers.
- the polyolefin-based resin fine particles of the present invention have good dispersibility in polyolefin-based resins.
- the polyolefin-based resin fine particles of the present invention are used as a crystal nucleating agent, the transparency of the polyolefin-based resin can be improved. Further, since the shrinkage during molding can be made uniform, a molded article having excellent dimensional stability can be provided, and the molded article can be suitably used for molded articles of precision industrial products. Polyester resin particles composed of uncrosslinked polyester resin are also One of the Ming.
- the polyester-based resin fine particles of the present invention have a clear glass transition temperature and melting point, and are suitable for a temperature-sensitive filler, a crystal nucleating agent of a crystalline polymer, and the like. Can be used. Further, since a large amount of polar groups such as COOH and OH remain in the uncrosslinked polyester-based resin, these polar groups also exist on the surface of the polyester-based resin fine particles of the present invention. Accordingly, the polyester resin fine particles of the present invention have a high affinity for pigments and the like, and are suitable as binder resins for coatings, inks, and the like. Further, since these polar groups easily react with compounds having an amino group, a glycidyl group, an isocyanato group or the like, surface modification can be easily performed to impart various performances.
- the method for producing resin fine particles of the present invention makes it easy and moreover.
- particles having sufficiently small and uniform particle diameters and high sphericity can be manufactured.
- the polyester-based resin fine particles produced by the method for producing resin fine particles of the present invention do not contain a surfactant and a suspension stabilizer, they are suitably used for biochemical applications such as protein carriers. be able to.
- the polyester resin can be obtained by subjecting a dicarboxylic acid and a diol to polycondensation.
- dicarboxylic acids examples include o-phthalic acid, terephthalic acid, isophthalic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, octylsuccinic acid, cyclohexanedicarboxylic acid, naphthalenedicarboxylic acid, fumaric acid, Maleic acid, itaconic acid, decamethylene carboxylic acid, anhydrides thereof, lower alkyl esters and the like can be mentioned.
- diol examples include ethylene glycol, 1,3-propanediol, 1,4-butanediol, diethylene glycolone, 1,5-pentanedole, 1,6-hexanediol, dipropylene glycol, and triethylene glycol.
- Glyconore tetraethylenedalicol, 1,2-propanediole, 1,3-butanediole, 2,3-butanediole, neopentylglyconele (2,2-dimension) Tylpropane-1,3-diol), 1,2-hexanediol, 2,5-hexandionole, 2-methyl-1,2,4-pentanediol, 3-methyl-1,3-pentanediol, 2-ethyl-1, 2,2-bis (4-hydroxycyclohexyl) propane, alkylene oxide adducts of 2,2-bis (4-hydroxycyclohexyl) propane, 2,3-bis (4-hydroxycyclohexyl) propane Alicyclic diols such as 4-cyclohexanediol and 1,4-cyclohexanedimethanol;
- polyester resin dibutylbenzene, dibiel bipheninole, dibininolenaphthalene, polyethylene glycolone resin (meth) atalylate, 1,6-hexanediol resin (meth) acrylate Neopentinoleglycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, tetramethylolone methane tri (meth) acrylate, tetramethylol propane tetra (meth) acrylate, diaryl phthalate and isomers thereof
- a polyfunctional monomer such as a compound, triaryl isocyanurate and its derivative may be added.
- polyester-based resin fine particles of the present invention are produced, and then, if necessary, crosslinked to improve physical properties such as strength and various properties such as thermoplasticity. Can be changed.
- These polyfunctional monomers may be used alone or in combination of two or more.
- the average particle diameter of the polyester resin fine particles of the present invention is preferably 1 ⁇ m or less. If it exceeds 1 / xm, aggregation may easily occur and dispersion stability may not be maintained.
- the lower limit of the average particle diameter is not particularly limited, but is preferably 50 nm or more. If it is less than 50 nm, the handleability may deteriorate.
- the polyester resin fine particles of the present invention preferably have a particle size CV value of 5% or less.
- the CV value is uniform to 5% or less, the polyester-based resin fine particles of the present invention have uniform properties, such as spacers and high heat-sensitive fillers in IT peripheral fields and the like. It can be suitably used for applications such as homogeneous nucleating agents. It is more preferably at most 3%.
- the polyester resin fine particles of the present invention preferably have a sphericity of 1.25 or less. Good. If the sphericity is 1.25 or less, for example, extremely high connection stability can be obtained when plating is used to make conductive fine particles or the like and used for connecting electrodes, or a gap is formed in the liquid crystal substrate. When used as a spacer, it can be used in many applications, such as obtaining a highly accurate gap. More preferably, it is 1.1 or less.
- polyester-based resin fine particles of the present invention are composed of an uncrosslinked polyester-based resin, they have excellent thermoplasticity and various properties derived from the remaining functional groups. In addition, since the particle diameter is small and extremely uniform, it can be expected to be applied to various uses. Further, when a polyfunctional polymerizable monomer is contained, mechanical properties such as strength, thermoplasticity, and the like can be changed as necessary.
- the polyester resin fine particles of the present invention include seed particles for seed polymerization, paints, slipperiness imparting agents, toners, additives for light diffusion, insulating fillers, crystal nucleating agents, fillers for chromatography, and carriers for immunodiagnostic reagents. And various other uses.
- Acrylic resin fine particles that do not contain a surfactant and a suspension stabilizer are also one aspect of the present invention.
- the acrylic resin fine particles of the present invention can be used for ion-free applications, and have extremely high weather resistance and water resistance when used for applications such as paints. Expresses sex.
- surfactant examples include those commonly used for emulsion polymerization and the like. Examples thereof include fatty acid salts, sulfate salts of higher alcohols, ester sulfates of liquid fatty oils, aliphatic amines and aliphatic amides.
- Anionic surfactants such as sulfates, phosphate esters of aliphatic alcohols, sulfonates of dibasic fatty esters, and alkylaryl sulfonates; primary amine salts, secondary amine salts, and tertiary amine salts And cationic surfactants such as quaternary ammonium salts and pyridinium salts; and nonionic surfactants such as polyoxyethylene alkylene ether, polyoxyethylene alcohol phenylene ether, and polyoxyethylene alkyl ester.
- sulfates such as sulfates, phosphate esters of aliphatic alcohols, sulfonates of dibasic fatty esters, and alkylaryl sulfonates
- cationic surfactants such as quaternary ammonium salts and pyridinium salts
- nonionic surfactants
- suspension stabilizer examples include those commonly used in emulsion polymerization and the like.
- examples include polybutyl alcohol, partially saponified polybutyl alcohol, polyatacrylic acid, polymethacrylic acid, polymethacrylamide, gelatin, tragacanth, Water-soluble polymeric suspension stabilizers such as Lucerol and starch; stable suspension of poorly soluble inorganic salts such as barium sulfate, sulfated calcium sulfate, barium carbonate, calcium carbonate, magnesium carbonate, calcium phosphate, and aluminum hydroxide Agents and the like.
- most of the surfactants and suspension stabilizers currently used for emulsion polymerization and the like are sulfonium salts and sulfates. Is preferably not contained.
- this method also uses a monomer having a surfactant 1 "bioactive effect instead of using a surfactant or a suspension stabilizer.
- the acrylic monomer itself is a sulfone surfactant.
- it did not fundamentally solve the problems caused by surfactants and suspension stabilizers, and because it was necessary to use monomers copolymerizable with monomers having such a surfactant effect,
- There was also a limitation in the composition of the acrylic resin As described above, it was virtually impossible to produce acryl resin fine particles containing no surfactant and suspension stabilizer by the conventional method. According to the method for producing resin fine particles of the present invention, easily, the force is reduced, and the particle diameter is sufficiently small. It is possible to manufacture products with uniform and high sphericity.
- the acrylic resin means a resin obtained by polymerizing acrylic acid and its derivatives, and is a polymer or copolymer of acrylic acid and its ester, acrylamide, Atari nitrile, methacrylic acid and its ester, and the like. Coalescing is included.
- the acrylic resin is not particularly limited, but is preferably one obtained by polymerizing polymethyl methacrylate.
- the resulting acrylic resin has excellent weather resistance and can be used, for example, as a physical property modifier of an outdoor resin film.
- since it has a polar group it can be used to improve the dispersibility of various pigments and paints. It is also excellent, and can impart adhesiveness and the like.
- the average particle size of the acryl resin fine particles of the present invention is preferably 1 ⁇ m or less. If it exceeds ⁇ , aggregation may easily occur and dispersion stability may not be maintained.
- the lower limit of the average particle diameter is not particularly limited, but is preferably 50 nm or more. If it is less than 50 nm, the handleability may deteriorate.
- the acryl resin fine particles of the present invention preferably have a CV value of the particle diameter of 5% or less. If the CV value is specified to be 5% or less, the acrylic resin particles of the present invention have the same properties, and are suitable for spacers, high heat-sensitive filters, It can be suitably used for applications such as a crystal nucleating agent. More preferably, it is less than 3%.
- the acryl resin fine particles of the present invention preferably have a sphericity of 1.25 or less.
- the ratio is less than 1.25, for example, extremely high connection stability can be obtained when plating is used to make conductive fine particles and the like and used for connection of electrodes, or a spacer that forms a gap between liquid crystal substrates can be obtained. It can be used for many applications, such as obtaining a highly accurate gap when used as More preferably, it is 1.1 or less.
- the acrylic resin fine particles of the present invention are soap-free fine particles that do not contain a surfactant, and have a very uniform particle diameter and molecular weight.
- the acrylic resin fine particles of the present invention are used for seed polymerization seed particles, adhesives, paints, slipperiness imparting agents, toners, light diffusion additives, insulating fillers, crystal nucleating agents, chromatography fillers, and immunodiagnostic reagents. It can be used for various uses such as a carrier. Above all, outdoors such as paint When used in such a case, it is extremely excellent in weather resistance and coating film strength.
- the average particle diameter, the CV value of the particle diameter, and the roundness were measured by the following methods.
- ELS 800 manufactured by Otsuka Electronics Co., Ltd.
- the particle size and the particle size distribution were measured by the dynamic light scattering mode, and the CV value of the particle size was calculated from the measured values.
- the resin fine particle suspension was dropped on a sample table of a scanning electron microscope (“S-3500N” manufactured by Hitachi, Ltd.) and then dried under reduced pressure. After drying, gold was vapor-deposited on the surface of the resin fine particles using an evaporator, and an electron micrograph was taken. The obtained electron micrograph was subjected to image analysis using Imagemap (manufactured by mediacybernetic) to determine the roundness of the fine particles.
- S-3500N scanning electron microscope
- the particle diameter and the particle size distribution of the obtained polyester resin fine particles were measured in a dynamic light scattering mode using ELS 800 (manufactured by Otsuka Electronics Co., Ltd.).
- the average particle diameter was about 500 nm.
- the CV value was 2%.
- the resin fine particle suspension was transferred to a scanning electron microscope (S-3500NJ manufactured by Hitachi, Ltd.).
- a pressure-resistant container having an inner volume of 1 OmL was filled with 0.2 g of an acrylic resin (“SUMIPEC” manufactured by Sumitomo Chemical Co., Ltd.) and 4 g of a 10% aqueous methanol solution as a liquid fluid, and sealed.
- One SUS ball was placed in the thick container in advance.
- the pressure vessel was vibrated to mix the acrylic resin and the liquid fluid, and then heated to 400 ° C in an oil bath.
- the pressure at this time was about 3 OMPa.
- the pressure vessel was vibrated, and after 5 minutes, rapidly cooled to normal temperature and normal pressure.
- the acrylic resin particles in the fluid was obtained as a resin particle suspension. This suspension was dried under vacuum to obtain acrylic resin fine particles.
- the average particle diameter, the CV value of the particle diameter, the roundness, and the presence or absence of a surfactant were measured by the following methods.
- ELS 800 manufactured by Otsuka Electronics Co., Ltd.
- the particle size and the particle size distribution were measured by the dynamic light scattering mode, and the CV value of the particle size was calculated from the measured values.
- the resin fine particle suspension was dropped onto a sample table of a scanning electron microscope (Hitachi “S-3500Nj”) and dried under reduced pressure.After drying, gold was vapor-deposited on the surface of the resin fine particles using an evaporator. The obtained electron micrograph was subjected to image analysis using Imager (manufactured by mediacybernetic) to determine the roundness of the fine particles. (Measurement of presence or absence of surfactant)
- X-ray fluorescence measurement of the acrylic resin microparticles was conducted to determine whether sulfur attributable to sulfonium ions was detected.
- Ataryl resin fine particles 0.1 g of particles was suspended in 10 mL of water, and the mixture was sealed and extracted at 23 ° C for 24 hours. This extract was dialyzed for 24 hours at 23 ° C. using a dialysis membrane, centrifuged, and the supernatant was subjected to ICP analysis to check for the detection of sulfur belonging to the sulfonium salt. Table 2
- a method for producing resin fine particles capable of easily obtaining resin fine particles having a high sphericity and a uniform particle diameter, resin fine particles produced by using the method for producing resin fine particles, polyolefin-based resin fine particles And polyester resin fine particles and acrylic resin fine particles.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003289159A AU2003289159A1 (en) | 2003-04-23 | 2003-12-04 | Method for producing fine resin particles and fine resin particles |
EP03777225A EP1616900A4 (en) | 2003-04-23 | 2003-12-04 | METHOD FOR PRODUCING TINY RESIN PARTICLES AND FINE RESIN PARTICLES |
US10/553,421 US20060116468A1 (en) | 2003-04-23 | 2003-12-04 | Method for producing fine resin particles and fine resin particles |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
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JP2003-118727 | 2003-04-23 | ||
JP2003118726A JP2004143404A (ja) | 2002-08-28 | 2003-04-23 | ポリオレフィン系樹脂微粒子 |
JP2003-118728 | 2003-04-23 | ||
JP2003118728A JP2004143406A (ja) | 2002-08-28 | 2003-04-23 | ポリエステル系樹脂微粒子及びポリエステル系樹脂微粒子の製造方法 |
JP2003118729A JP2004143407A (ja) | 2002-08-28 | 2003-04-23 | アクリル樹脂微粒子 |
JP2003118727A JP4504629B2 (ja) | 2002-08-28 | 2003-04-23 | 樹脂微粒子の製造方法 |
JP2003-118726 | 2003-04-23 | ||
JP2003-118729 | 2003-04-23 |
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WO2004094507A1 true WO2004094507A1 (ja) | 2004-11-04 |
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PCT/JP2003/015506 WO2004094507A1 (ja) | 2003-04-23 | 2003-12-04 | 樹脂微粒子の製造方法及び樹脂微粒子 |
Country Status (6)
Country | Link |
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US (1) | US20060116468A1 (ja) |
EP (1) | EP1616900A4 (ja) |
KR (1) | KR20060006051A (ja) |
AU (1) | AU2003289159A1 (ja) |
TW (1) | TW200422326A (ja) |
WO (1) | WO2004094507A1 (ja) |
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JP2009249579A (ja) * | 2008-04-09 | 2009-10-29 | Sharp Corp | 球形粒子の製造方法、球形粒子、トナー、現像剤、現像装置および画像形成装置 |
KR20120106966A (ko) * | 2009-12-24 | 2012-09-27 | 도레이 카부시키가이샤 | 탄소 미립자 및 그 제조 방법 |
US10465049B2 (en) * | 2015-09-04 | 2019-11-05 | Sabic Global Technologies B.V. | Process for the manufacture of thermoplastic polymer particles with improved process yield |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734227A (en) | 1983-09-01 | 1988-03-29 | Battelle Memorial Institute | Method of making supercritical fluid molecular spray films, powder and fibers |
JPH08113652A (ja) | 1994-08-24 | 1996-05-07 | Nippon Paint Co Ltd | 高分子微粒子の製造方法 |
JP2003268119A (ja) | 2002-03-13 | 2003-09-25 | Hitachi Cable Ltd | 粉体の製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6057409A (en) * | 1995-04-03 | 2000-05-02 | Xerox Corporation | Supercritical polymerization processes |
US5766637A (en) * | 1996-10-08 | 1998-06-16 | University Of Delaware | Microencapsulation process using supercritical fluids |
-
2003
- 2003-12-04 TW TW092134124A patent/TW200422326A/zh unknown
- 2003-12-04 EP EP03777225A patent/EP1616900A4/en not_active Withdrawn
- 2003-12-04 US US10/553,421 patent/US20060116468A1/en not_active Abandoned
- 2003-12-04 AU AU2003289159A patent/AU2003289159A1/en not_active Abandoned
- 2003-12-04 WO PCT/JP2003/015506 patent/WO2004094507A1/ja active Application Filing
- 2003-12-04 KR KR1020057020020A patent/KR20060006051A/ko not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734227A (en) | 1983-09-01 | 1988-03-29 | Battelle Memorial Institute | Method of making supercritical fluid molecular spray films, powder and fibers |
JPH08113652A (ja) | 1994-08-24 | 1996-05-07 | Nippon Paint Co Ltd | 高分子微粒子の製造方法 |
JP2003268119A (ja) | 2002-03-13 | 2003-09-25 | Hitachi Cable Ltd | 粉体の製造方法 |
Non-Patent Citations (1)
Title |
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See also references of EP1616900A4 * |
Also Published As
Publication number | Publication date |
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EP1616900A1 (en) | 2006-01-18 |
KR20060006051A (ko) | 2006-01-18 |
AU2003289159A1 (en) | 2004-11-19 |
TW200422326A (en) | 2004-11-01 |
US20060116468A1 (en) | 2006-06-01 |
EP1616900A4 (en) | 2006-04-12 |
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