WO2006129360A1 - Procede de fabrication de noir de carbone a surface traitee par un compose organique - Google Patents

Procede de fabrication de noir de carbone a surface traitee par un compose organique Download PDF

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Publication number
WO2006129360A1
WO2006129360A1 PCT/JP2005/010164 JP2005010164W WO2006129360A1 WO 2006129360 A1 WO2006129360 A1 WO 2006129360A1 JP 2005010164 W JP2005010164 W JP 2005010164W WO 2006129360 A1 WO2006129360 A1 WO 2006129360A1
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Prior art keywords
organic compound
carbon black
particles
grafting
force
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PCT/JP2005/010164
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English (en)
Japanese (ja)
Inventor
Masafumi Uchida
Shingo Asai
Chihi Go
Original Assignee
Konica Minolta Business Technologies, Inc.
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Publication date
Application filed by Konica Minolta Business Technologies, Inc. filed Critical Konica Minolta Business Technologies, Inc.
Priority to JP2007518832A priority Critical patent/JP5228483B2/ja
Priority to PCT/JP2005/010164 priority patent/WO2006129360A1/fr
Publication of WO2006129360A1 publication Critical patent/WO2006129360A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/56—Treatment of carbon black ; Purification
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/56—Treatment of carbon black ; Purification
    • C09C1/565—Treatment of carbon black ; Purification comprising an oxidative treatment with oxygen, ozone or oxygenated compounds, e.g. when such treatment occurs in a region of the furnace next to the carbon black generating reaction zone
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • 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
    • C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances

Definitions

  • the present invention relates to a method for producing carbon black grafted with an organic compound. It is related to carbon black, which is widely used in many industries such as rubber industry, plastic industry, oil-based ink, paint, and dry battery, and it is a method for producing carbon black to make it exist stably in the state of primary particles. .
  • carbon black is excellent in colorability, conductivity, weather resistance, chemical resistance, etc., it is widely used for various purposes such as plastic and elastomer reinforcing agents and fillers.
  • carbon black exists as secondary particles, ie, aggregates (structures) in which a plurality of basic particles are chemically and Z or physically bonded (Fig. 4).
  • This structure has a complex agglomerated structure that is branched into irregular chains, and its shape is uneven, so even if dispersed in a desired medium, uniform colorability, conductivity, etc. It was difficult to obtain.
  • carbon black is in the form of powder or granules, it is rarely used alone. Usually, carbon black is applied to a solid substrate such as rubber resin or a liquid such as water or a solvent. Disperses evenly and exhibits its properties. However, since carbon black has a weak affinity with other substances such as organic polymers, water, and organic solvents compared to the cohesion between particles, it can be mixed uniformly or mixed under normal mixing or dispersion conditions. It was very difficult to disperse. In order to solve this problem, the surface of the carbon Many studies have been made to improve the dispersibility of carbon black by coating it with an agent and increasing the affinity with a solid substrate or liquid.
  • carbon black grafted with an organic compound obtained by polymerizing a polymerizable monomer in the presence of carbon black (structure) can be obtained by appropriately selecting the type of polymerizable monomer. Attention has been paid to the fact that hydrophilicity and Z or lipophilicity can be appropriately changed (for example, US Pat. No. 6,417,283). However, with the conventional method, even if the dispersibility with respect to the medium can be improved, the shape cannot be made uniform. Also, such grafted carbon black was in a form grafted on the surface of the structure.
  • the present invention has been made in view of the above-described problems, and an object thereof is to provide a novel method for producing carbon black grafted with an organic compound.
  • Another object of the present invention is to provide a method for producing primary particles of carbon black grafted with an organic compound.
  • Another object of the present invention is to provide a carbon black production method capable of improving dispersibility in a polymer matrix of carbon black or in an organic solvent.
  • the step of imparting the mechanical shear force is at least equal to or higher than the melting point of the organic compound.
  • the present inventors have conducted research in view of at least the above problems.
  • the inventors of the present invention have noticed that, even if carbon black aggregates are made finer, they are aggregated again due to the strength and cohesive strength between carbon blacks. In other words, it was studied to eliminate the reaggregation site so that the aggregate would not be reaggregated even if it was made fine.
  • the aggregate surface is treated with an organic compound to reduce the number of re-aggregation sites, cracks are formed at the joints between the basic particles of the aggregate, and the organic compound is grafted to the cracks, eventually becoming stable. It was found that primary particles can be obtained.
  • the stable primary particles have a uniform shape as compared with the aggregates, and the design efficiency can be improved in controlling the powder characteristics resulting from the shape.
  • primary particles refer to the basic particles. However, it does not refer to the basic particles in the state of constituting the aggregate, but refers to particles that are separated and separated stably from the aggregate force.
  • secondary particles refer to aggregates formed by aggregation of basic particles.
  • secondary aggregates in which aggregates are aggregated are also collectively referred to as secondary particles in the present application.
  • FIG. 2 is a diagram illustrating the relationship between secondary particles and basic particles.
  • the state in which the basic particles are aggregated is defined as secondary particles.
  • Fig. 3 shows the state in which the basic particles constituting the secondary particles are separated from the secondary particles and exist stably, and the particles existing as a single basic particle are defined as primary particles.
  • the surface of the carbon black aggregate is surface-treated with the organic compound.
  • radicals are generated on the surface of the structure, which is the smallest agglomeration unit, by heat or mechanical force, and the surface is treated with an organic compound that can capture these radicals.
  • This step effectively reduces the re-aggregation sites that have been agglomerated due to the strong agglomeration force between the carbon blacks, and prevents the primary particles of the structure and carbon black from aggregating and adhering.
  • the surface treatment includes a treatment for adsorbing the surface with an organic compound and a treatment for grafting the organic compound.
  • the organic compound is grafted on the entire surface of the secondary particles on a portion other than the surface separated from the secondary particle force!
  • the carbon black aggregate and the force having an active free radical or an organic compound that can be generated are mixed to perform the surface treatment.
  • this surface treatment it is preferable to include a mixing step for applying a mechanical shearing force.
  • the surface of the carbon black secondary particles is activated in the process of applying mechanical shearing force, and the organic compound itself is also activated by shearing force, resulting in a so-called radical state.
  • the mixing apparatus used in the surface treatment process is preferably a polylab system mixer (manufactured by Thermo Electron), a refiner, a single screw extruder, a twin screw extruder, a planetary screw extruder. Machines, cone-screw extruders, continuous kneaders, sealed mixers, Z-type kneaders, etc. can be used.
  • a mechanical shearing force can be uniformly applied to the entire particles by setting a high filling state during mixing. If the degree of fullness is low, the transmission of shearing force is insufficient, and grafting, which makes it difficult to increase the activity of carbon black and organic compounds, may not progress.
  • the temperature of the mixing zone is preferably equal to or higher than the melting point of the organic compound, preferably within the melting point + 200 ° C, and more preferably within the melting point + 150 ° C.
  • surface treatment is performed by using electromagnetic waves such as ultrasonic waves, microwaves, ultraviolet rays and infrared rays, ozone action, oxidant action, chemical action and Z or mechanical shear force action in combination. It is possible to change the process time.
  • the mixing time is about 15 seconds to 120 minutes depending on the desired degree of surface treatment. Preferably 1 to: LOO minutes.
  • the organic compound used for the surface treatment is preferably added in a range of 5 to 300 parts by weight with respect to 100 parts by weight of the carbon black to perform the surface treatment step. More preferably, it is 10 to 200 parts by weight.
  • the organic compound can be uniformly attached to the surface of the bonbon black, and further, sufficient to attach to the separation surface generated when the secondary particles are formed. The amount can be made small. For this reason, it is possible to effectively prevent the decomposed primary particles from aggregating again, and carbon black produced by an organic compound that is excessively present in the finished carbon black, which is generated when added in excess of the amount of added calories. The possibility of losing inherent properties is reduced.
  • the grafting step is a step of grafting the organic compound onto the separation surface of the primary particles separated by at least the secondary particle force.
  • the organic compound can be grafted to the newly formed separation surface on the primary particles from the secondary particles.
  • Primary particles can be stabilized and present, and furthermore, primary particles uniformly treated with an organic compound can be formed on the surface, so that good dispersibility can be ensured. .
  • This step is a step of converting the carbon black that has undergone the surface treatment step into stable primary particles. That is, for example, a mechanical shearing force is applied to the carbon black surface-treated in the above-described process, and secondary particles are cleaved to form primary particles, and at the same time, the organic material is applied to the cleavage plane, so-called separation plane.
  • the compound is grafted to form primary particles and at the same time stabilized.
  • a mechanical shearing force is applied to the carbon black surface-treated with the organic compound to cause cracks in the agglomerated portion of the basic particles present in the secondary particles, or at the same time or thereafter, the organic compound is at least in that portion.
  • the force is continuously applied to one bon black, and energy (for example, mechanical shearing force) is continuously applied to enlarge the cracked part, and the organic compound is grafted to the cracked part. Finally, the basic particles become primary particles. At the time of separation, there is almost no agglomerated portion, and primary particles can be stably present. In this case, since the same mechanical shear force is imparted to the added organic compound, the organic compound itself is also activated by the mechanical shear force, and grafting is promoted.
  • carbon black grafted with an organic compound refers to carbon black in which an organic compound portion is grafted onto a carbon black portion.
  • grafting is defined by Jean-Baptiste Donnet et al. In his book “Carbon Black” (published on May 1, 1978 by Kodansha). An irreversible addition of an organic compound to a substrate such as carbon black.
  • the grafting step is a step of grafting at least a force having an active free radical at the cracked portion or an organic compound that can be generated, but a graph toy wrinkle may simultaneously occur in addition to the cracked portion. Also, it may be executed simultaneously or as a separate process during the progress of the surface treatment process.
  • Means for causing the above cracks include irradiation of electromagnetic waves such as ultrasonic waves, microwaves, ultraviolet rays, and infrared rays, ozone action, action of oxidant, chemical action, and mechanical shear force action.
  • electromagnetic waves such as ultrasonic waves, microwaves, ultraviolet rays, and infrared rays
  • ozone action action of oxidant, chemical action, and mechanical shear force action.
  • a crack it is preferable to cause a crack by applying at least a mechanical shearing force. It is desirable to place the carbon black (structure) surface-treated with an organic compound in a place where mechanical shearing force is applied and to adjust the surface-treated carbon black from the structure to primary particles. When applying this mechanical shearing force, other means for causing cracks described above may be used in combination.
  • the mechanical shearing force here is preferably a shearing force similar to the mechanical shearing force in the surface treatment step described above.
  • the action of mechanical shearing force may generate active free radicals by breaking the chain inside carbon black, which is not a force when carbon black is atomized from aggregates to primary particles.
  • the organic compounds having or capable of generating free radicals used in the present invention may be cleaved under the action of, for example, mechanical shear force fields or generate forces having active free radicals. Contains possible organic compounds.
  • active free radicals cannot be formed sufficiently under the action of mechanical shearing force, they are exposed to electromagnetic waves such as ultrasonic waves, microphone mouth waves, ultraviolet rays, and infrared rays, under the action of ozone, or under the action of oxidizing agents. Can supplement the number of active free radicals.
  • Polylab system mixer manufactured by Thermo Electron
  • refiner single screw extruder, twin screw extruder, planetary screw extruder, cone screw extruder, continuous kneading machine, etc.
  • Machines, sealed mixers, Z-types, etc. can be used.
  • the conditions for applying the mechanical cutting force are preferably the same as those for the surface treatment described above from the viewpoint of effectively applying the mechanical shearing force.
  • mechanical energy can be imparted to the entire particle uniformly effectively and continuously, so that grafting can be performed efficiently and uniformly. Is preferable.
  • the organic compound to be added may be gradually or intermittently added so that the organic compound becomes a predetermined amount. Add a certain amount in advance at the start of the surface process, and run until the grafting process! /.
  • the organic compound used in the grafting process as the material to be grafted with the organic compound used in the surface treatment process as the surface treatment material may be the same or different. Yes.
  • the grafting step described above is preferably carried out under conditions that are not lower than the melting point of the organic compound used.
  • the upper limit of the temperature condition is particularly preferably within the melting point of the organic compound + 200 ° C., more preferably within the melting point + 150 ° C., from the viewpoint of promoting the graft reaction and fragmentation of the primary particles.
  • the temperature is set with respect to the melting point of the organic compound having the highest melting point.
  • the mechanical shearing force application time described above depends on the amount and scale of the sample, but in order to fully execute the process, it is 1 minute or more and within 100 minutes to improve the uniformity of the reaction. It is preferable from the viewpoint.
  • Examples of the carbon black that can be used include carbon black having a force aggregate structure that can be used for any commercially available one such as furnace black, channel black, acetylene black, and lamp black.
  • the aggregate structure means a carbon black formed into secondary particles, which is formed by agglomerating primary particles, which are basic particles, and has a structure structure, and also has a so-called aggregate force of primary particles.
  • sufficient carbon-containing functional groups such as carboxyl groups, quinone groups, phenol groups, and rataton groups on the surface of the carbon black and the layer surface periphery. It is desirable that there are many active hydrogen atoms.
  • the carbon black used in the present invention preferably has an oxygen content of 0.1% or more and a hydrogen content of 0.2% or more.
  • the oxygen content is 10% or less and the hydrogen content is 1% or less.
  • oxygen content hydrogen content are Respectively, it is obtained by dividing the number of oxygen elements or hydrogen elements by the total number of elements (sum of carbon, oxygen and hydrogen elements).
  • the surface treatment of the organic compound onto the carbon black can facilitate the graft reaction.
  • the oxygen content and hydrogen content on the surface of carbon black are below the above ranges, gas phase oxidation such as heated air oxidation or ozone oxidation, or nitric acid, hydrogen peroxide, potassium permanganate, sodium hypochlorite Alternatively, the oxygen content and hydrogen content of carbon black may be increased by a liquid phase acid treatment with bromine water or the like.
  • the organic compound used to surface-treat carbon black in the surface treatment process or to graft onto the carbon black in the grafting process is a force with free radicals or an organic compound that can be generated. .
  • the conditions for generating the free radical are not particularly limited. However, in the case of the organic compound used in the present invention, a free radical is present during the grafting process. It is necessary to be in a state.
  • the organic compound includes at least a compound capable of generating a free radical by electron transfer, a compound capable of generating a free radical by thermal decomposition, and a compound capable of generating a free radical as a result of the structure of the compound being cleaved by shearing force or the like. preferable.
  • the molecular weight is preferably 50 or more, and the upper limit is preferably 1500 or less. .
  • the molecular weight is preferably 50 or more, and the upper limit is preferably 1500 or less.
  • the organic compounds used in the surface treatment step and the grafting step may be the same or different, and plural types of organic compounds may be added to each step. In order to control the reaction temperature and simplify other conditions, it is desirable that the organic compounds used in the surface treatment step and the grafting step be the same.
  • Examples of the organic compound include organic compounds capable of capturing free radicals on the carbon black surface of phenolic compounds, amine compounds, phosphate ester compounds, and thioether compounds. it can.
  • antioxidants of phosphate ester compounds, thiol compounds, and thioether compounds can also be used. A plurality of these organic compounds may be used in combination. Depending on the combination, various surface treatment characteristics can be exhibited.
  • These organic compounds preferably do not have an isocyanate group in order to reliably control the reaction. That is, when an organic compound having excessive reactivity is used, a uniform grafting reaction is difficult to be formed, and it may be necessary to use a large amount of reaction time and amount of the organic compound. The reason for this is not clear, but when an organic compound with high reactivity as described above is used, the reaction proceeds in addition to the surface active sites and is formed by the mechanical shear force that is the original purpose. It is presumed that the reaction to the active point is insufficient.
  • R C 9 H 1 (Organic compound 96)
  • Phenolic organic compounds (Organic compound 161)
  • the number average particle diameter of the ferret diameter of the carbon black used in the present invention is preferably 20 to 500 nm. Further, the carbon black obtained by the present invention preferably has a ferret diameter number average particle diameter in the range of 5 to 300 nm. Preferably, 10 to: LOOnm. By taking such a range, it becomes possible to remarkably obtain the mechanical characteristics when a resin molding, a rubber composition, or the like is formed.
  • the measurement target of the number average particle diameter of the ferret diameter is primary particles and secondary particles of carbon black that exist stably.
  • the aggregate is an object to be measured, and the basic particles in the aggregate are not measured.
  • the number average particle diameter of the primary diameter of the primary particles is preferably 2 to: L00 nm, and particularly preferably 3 to 80 nm.
  • the carbon black existing as aggregates is appropriately selected so that the basic particle diameter of the carbon black falls within the above range, or the aggregate is divided into primary particles. This can be achieved by changing the time conditions.
  • the number average particle diameter of the ferret diameter can be observed with an electron microscope.
  • the image is magnified 100,000 times with a scanning electron microscope (SEM), and 100 particles are appropriately selected and calculated.
  • TEM transmission electron microscope
  • the ferret diameter used in the present invention represents the maximum length in any one direction of each carbon black particle in the plurality of carbon black particles photographed by the electron microscope.
  • the maximum length is the distance between parallel lines when two parallel lines that are perpendicular to one of the above directions and touch the outer diameter of the particle are drawn.
  • an arbitrary direction 201 is defined for a photograph 300 of a carbon black particle 200 taken with an electron microscope.
  • the distance between the two straight lines 202 perpendicular to the arbitrary one direction 201 and in contact with each force single bon black particle 200 is the free diameter 203.
  • the carbon black obtained by the production method of the present invention can be applied to compositions in various fields.
  • the carbon black of the present invention is excellent in dispersibility in various vehicles, and at the same time has primary particles. Therefore, these various compositions also have extremely excellent characteristics. Furthermore, since excellent mechanical properties are drawn out, an excellent rubber composition can be obtained, and a resin composition that is hardly deteriorated can be obtained.
  • compositions in various fields a desired composition can be prepared by employing various known methods except for containing the carbon black of the present invention.
  • the number of revolutions (Sv2) is set to 50 revolutions per minute
  • the second temperature condition (Tp2) is set to 170 ° C (melting point + 45 ° C)
  • the mechanical shear force is higher.
  • the processing time (T2) was changed to 30 minutes. Then, it was cooled and the treated carbon black was taken out.
  • the organic compound is grafted on the surface of the carved black at a grafting rate of 81%, the number average particle size of the Fred diameter is 80 nm, and secondary particles are crushed. It was confirmed.
  • This carbon black is referred to as “carbon black 1 of the present invention”.
  • the reaction product of carbon black and organic compound obtained above is put into a Soxhlet extractor, extracted with toluene for 72 hours, unreacted organic compound is extracted, and the grafting rate is calculated.
  • the graft ratio is expressed as (( ⁇ - ⁇ ) ⁇ ) ⁇ (%), where Y is the amount of organic compound before the reaction and the extracted organic compound is taken.
  • Tpl first temperature condition
  • Svl revolutions
  • T1 revolutions per minute
  • Example 1 instead of carbon black (N220, manufactured by Mitsubishi Chemical Co., Ltd.), Ra venl035 (manufactured by Columbia Chemical Industry Co., Ltd.) was used, and other conditions were the same as shown in Table 1 and Table 2. Thus, carbon black 7 of the present invention was obtained.
  • Example 2 instead of carbon black (N220, manufactured by Mitsubishi Chemical Co., Ltd.), Ra venl035 (manufactured by Columbia Chemical Industry Co., Ltd.) was used, and other conditions were the same as shown in Tables 1 and 2. Thus, carbon black 8 of the present invention was obtained.
  • Carbon black (N220, manufactured by Mitsubishi Chemical Corporation), which has undergone the surface treatment and grafting process, is referred to as “Comparative Carbon Black 1”.
  • Example 2 In Example 1, after the processing time T1 passed 1 minute, the sample of the apparatus force was also taken out. This is referred to as “Comparison Carbon Black 2”.
  • Example 1 48 125 170 45 50 30 81
  • Implementation 5 127 195 255 60 50 40 91
  • Example 7 48 125 180 55 55 40 92
  • Example 8 47 125 250 125 55 40 87 Comparative Example 1 None ⁇ ⁇ ⁇ ⁇ ⁇ Comparative Example 2 48 125 ⁇ _ ⁇
  • Table 3 shows the time when sedimentation was observed even when centrifugation was performed for 60 minutes.
  • the carbon black of the present invention has relatively good dispersibility and compatibility and can be used in many areas such as transparent conductive materials, radiation prevention materials, oil-based inks, powder inks, paints, etc. Is possible.
  • the carbon black production method is simple in process, low in cost and free from contamination. It can be used for continuous production of large lots.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un procédé de fabrication de noir de carbone, ledit procédé comprenant une étape de traitement de surface selon laquelle la surface d'un noir de carbone contenant des particules secondaires comprenant une structure agrégée de particules basiques est traitée par un composé organique ayant ou étant capable de former un radical libre actif, et une étape de greffage selon laquelle le composé organique est greffé au moins sur une surface séparée des particules secondaires.
PCT/JP2005/010164 2005-06-02 2005-06-02 Procede de fabrication de noir de carbone a surface traitee par un compose organique WO2006129360A1 (fr)

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JP2007518832A JP5228483B2 (ja) 2005-06-02 2005-06-02 有機化合物で表面処理されたカーボンブラックの製造方法
PCT/JP2005/010164 WO2006129360A1 (fr) 2005-06-02 2005-06-02 Procede de fabrication de noir de carbone a surface traitee par un compose organique

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PCT/JP2005/010164 WO2006129360A1 (fr) 2005-06-02 2005-06-02 Procede de fabrication de noir de carbone a surface traitee par un compose organique

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Citations (2)

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JP2004018736A (ja) * 2002-06-18 2004-01-22 Fuji Photo Film Co Ltd インクジェットプリンタ用油性インク組成物
JP2005054043A (ja) * 2003-08-04 2005-03-03 Fuji Shikiso Kk インクジェト印刷用インク組成物およびその製造方法

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IL116552A (en) * 1995-01-10 2001-09-13 Cabot Corp Black carbon compositions, polymer compositions containing the black carbon compositions and products containing the polymer compositions
JP3514452B2 (ja) * 2002-02-08 2004-03-31 ケッチェン・ブラック・インターナショナル株式会社 高導電性熱可塑性樹脂組成物

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004018736A (ja) * 2002-06-18 2004-01-22 Fuji Photo Film Co Ltd インクジェットプリンタ用油性インク組成物
JP2005054043A (ja) * 2003-08-04 2005-03-03 Fuji Shikiso Kk インクジェト印刷用インク組成物およびその製造方法

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