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291results about "Pigment treatment with macromolecular organic compounds" patented technology
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Water-based floating aluminum pigment and preparation method thereof
The invention provides a water-based floating aluminum pigment and a preparation method thereof.The preparation method of the water-based floating aluminum pigment comprises the steps that an aluminum pigment and a silane coupling agent are subjected to a grafting reaction in the presence of an alkaline regulator, the silane coupling agent is grafted to the surfaces of aluminum particles, and a pretreated aluminum pigment is obtained; and carrying out polymerization reaction on the pretreated aluminum pigment, a hydrophilic monomer and a hydrophobic monomer under the condition of an initiator, and coating the surfaces of aluminum particles with an amphiphilic polymer to obtain the water-based floating aluminum pigment. According to the water-based floating aluminum pigment and the preparation method thereof provided by the invention, after the aluminum pigment is modified by using a silane coupling agent, the surfaces of aluminum particles are coated with a layer of amphiphilic polymer, so that the floating performance of the obtained aluminum pigment is improved, and meanwhile, the corrosion-resistant effect of the aluminum pigment is improved.
Owner:ANHUI TIANYI METAL NEW MATERIAL CO LTD
Gradient interface modified aluminum oxide-aluminum nitride two-component heat-conducting filler and preparation method thereof
PendingCN121379207AHeat-exchange elementsPigment treatment with macromolecular organic compoundsSilanesCarbon chain
The invention belongs to the field of heat conduction materials, and particularly relates to gradient interface modified aluminum oxide-aluminum nitride bi-component heat conduction filler and a preparation method thereof, and the gradient interface modified aluminum oxide-aluminum nitride bi-component heat conduction filler comprises spherical aluminum oxide, flaky aluminum nitride and double gradient modified layers coating the surfaces of the spherical aluminum oxide and the flaky aluminum nitride; the D50 of the spherical aluminum oxide is 2-5 microns, and the sphericity is greater than or equal to 0.85; the sheet-shaped aluminum nitride is in a hexagonal sheet shape, the average particle size is 8-12 microns, the thickness is 200-500 nanometers, and the radius-thickness ratio is 20-50; the mass ratio of the spherical aluminum oxide to the flaky aluminum nitride is (40-70): (30-60); the double-layer gradient modification layer comprises an inner-layer hydrophobic silane layer and an outer-layer reactive silane layer, the inner-layer hydrophobic silane layer is formed by grafting alkyl trialkoxy silane with the carbon chain length of 8-16, the outer-layer reactive silane layer is formed by grafting a silane coupling agent containing an epoxy group or an amino group, and morphological complementary optimization of a filler network is achieved.
Owner:GUANGDONG LETTO NEW MATERIALS CO LTD
Inorganic nanoparticles, inorganic nanoparticle film, and method for producing inorganic nanoparticle film
The polymer shell-attached nanoparticles and nanoparticle films are designed to prevent direct contact between the nanoparticle cores, significantly suppressing the formation of dimers and clusters, and to produce brighter colors in the target wavelength range.The polymer shell is 20 to 200 nm thick and is formed around inorganic nanocrystals with a particle size of 40 to 300 nm and a refractive index of 3 or higher. of The polymer shell formed around the inorganic nanocrystals consists of the hydroxyl groups on the surface of the inorganic nanocrystals and surface-modified functional groups; for example, the hydrophilic OH groups (hydroxyl groups) on the silicon surface are replaced with hydrophobic groups, and the silicon surface is modified and coated with N-isopropylacrylamide (NIPAM).
Owner:KOBE UNIV
A nano-titanium dioxide for matting polyester fibers and its preparation method
This invention relates to a modified titanium dioxide for matting polyester fibers and its preparation method. The modified titanium dioxide comprises a mesoporous titanium dioxide core and a cysteine graft layer grafted into the pores of the mesoporous titanium dioxide. The mesoporous titanium dioxide core is prepared by evaporation-induced self-assembly using an alkenyl sulfonate surfactant as a liquid crystal template and tetraethyl or tetrabutyl titanate as the titanium source. Due to the self-polymerization reaction of the alkenyl sulfonate, the resulting polyalkenyl sulfonic acid compound reduces the crystallinity of the mesoporous titanium dioxide, thereby significantly reducing its photocatalytic activity. The mesoporous titanium dioxide is mixed with cysteine and heated to graft cysteine into its pores. The presence of cysteine results in the modified titanium dioxide exhibiting both good matting properties and suppressed photocatalytic activity, preventing fiber structure damage from prolonged ultraviolet irradiation when applied to polyester fibers.
Owner:JIANGSU XUANDA POLYMER MATERIAL CO LTD +1
Graphene asphalt modifier based on micelle coating technology and preparation method thereof
The invention discloses a graphene asphalt modifier based on a micelle coating technology and a preparation method thereof, and belongs to the technical field of road materials. The modifier is prepared from reduced graphene oxide (rGO) serving as a core function phase, a micelle coating phase (compounded by polystyrene-polyoxyethylene block copolymer and ionic liquid) and an auxiliary modification phase (nano silicon dioxide and a silane coupling agent) according to the mass ratio of 10: (30-50): (5-10). The preparation method comprises the following steps: preparation and reduction of graphene oxide, preparation of an amphiphilic micelle solution, preparation of micelle-coated rGO composite particles and compounding of an auxiliary modified phase. The modifier can significantly improve the dispersibility and compatibility of graphene in asphalt, effectively prevent agglomeration, and synchronously improve the high and low temperature performance, aging resistance, water damage resistance and self-ice-melting performance of asphalt. The process is simple and convenient, is compatible with an existing asphalt production line, and is suitable for high-grade pavement engineering.
Owner:ZHONGRUN CHAOYOU (BEIJING) NEW MATERIALS CO LTD
Water-based aluminum pigment as well as preparation method and application thereof
ActiveCN121045859ACoatingsPigment treatment with macromolecular organic compoundsAluminum IonAluminium powder
The water-based aluminum pigment comprises aluminum powder, and an aluminum oxide layer, a silicon dioxide layer I, a silane coupling agent layer, a silicon dioxide layer II and an aluminum ion capture layer which sequentially coat the surface of the aluminum powder from inside to outside, the aluminum ion capture layer is an organic resin layer containing phosphate groups. The invention further discloses a preparation method of the water-based aluminum pigment and application of the water-based aluminum pigment in paint. The invention also discloses a water-based paint which comprises the following raw materials: water-based film-forming resin and the water-based aluminum pigment. Through mutual cooperation of the aluminum oxide layer, the first silicon dioxide layer, the silane coupling agent layer and the second silicon dioxide layer, the bonding strength and compactness of all the layers are improved, and aluminum pigment is prevented from making contact with a corrosion medium; a layer-by-layer cooperative capturing effect is formed by the silicon dioxide layer II and the aluminum ion capturing layer, so that the aluminum ion capturing effect is greatly improved, and the content of free aluminum ions in the coating is reduced; and has good water dispersibility and good metal appearance.
Owner:HEFEI SUNRISE PIGMENTS
A method for preparing a high-adhesion flaky zinc powder pigment
ActiveCN121736532BAnti-corrosive paintsPigment treatment with macromolecular organic compoundsPhosphateCentrifugation
This invention discloses a method for preparing a high-adhesion flake-shaped zinc powder pigment, belonging to the field of functional pigment preparation technology. The preparation steps are as follows: spherical zinc powder is ball-milled using prismatic irregular grinding media to obtain micro-serrated flake-shaped zinc powder; purified phosphate coupling agent, methyl methacrylate, high-purity citric acid, and a self-made high-acid-value copolymer dispersant are mixed in proportion, and ultrasonically dispersed with ethanol to prepare a composite modification liquid; the flake-shaped zinc powder is added to the modification liquid according to the liquid-solid ratio, and after gradient heating reaction, centrifugation, gradient ethanol washing, and vacuum drying, modified zinc powder is obtained; after classification, fine, medium, and coarse particle sizes are mixed in proportion to obtain the target pigment. The high-acid-value dispersant in this invention inhibits agglomeration through strong adsorption and steric hindrance, synergistically with the coupling agent and monomers to construct an active graft layer, and combined with the serrated structure to strengthen physical anchoring and chemical bonding. It exhibits stable dispersion and excellent mechanical properties, meeting the high adhesion and high corrosion resistance requirements of industrial coatings.
Owner:HUNAN NEW WELLLINK ADVANCED METALLIC MATERIAL CO LTD +1
Copper paste
A copper paste containing copper powder and an organic solvent, the aforementioned organic solvent being an alcohol-based solvent, the alcohol-based solvent containing: a first alcohol that is one or more selected from the group consisting of monohydric and dihydric alcohols having a viscosity of 3 mPa·s or more and 70 mPa·s or less at 20°C; and a second alcohol that is one or more selected from the group consisting of dihydric and trihydric alcohols having a viscosity of 300 mPa·s or more and 1000 mPa·s or less at 20°C.
Owner:MATERIAL CONCEPT
Nano calcium carbonate for automobile prime coat and application of nano calcium carbonate
PendingCN121895782AThixotropic paintsPigment treatment with macromolecular organic compoundsEpoxyCalixarene
The invention belongs to the technical field of nano inorganic filler surface modification, and discloses modified nano calcium carbonate which is prepared by the following steps: reacting a nano calcium carbonate raw material with a compound modifier at 70-80 DEG C, and drying, crushing and grading after the reaction is completed, wherein the compound modifier is composed of a component A and a component B in a molar ratio of 1: (1.2-2.0); the component A is selected from p-sulfo calix [n] arene or salt thereof, and n is an integer from 4 to 8; and the component B is selected from epoxy group modified polyisoprene. According to the present invention, the modification formula of mixing the sulfonic acid calixarene compound and the epoxy group modified polyisoprene is used, the molar ratio of the two components is precisely regulated and controlled, and the exposure ratio of the active hydroxyl group in the system is reasonably controlled, such that the modification formula can be used for the modification of the nano calcium carbonate, the modified nano calcium carbonate can effectively improve the impact strength and thixotropy of the base coat and reduce the viscosity of the base coat, and finally, adaptive balance between the thixotropy and the processing fluidity is achieved.
Owner:XIAOGUANG NEW MATERIAL TECHNOLOGY (XIANGXI) CO LTD
Method for industrially producing micro-particle conductive aggregate
PendingCN121824001APigment treatment with macromolecular organic compoundsElectrically-conductive paintsMicron scaleConductive paste
The invention discloses a method for industrially producing a micro-particle conductive aggregate. The method comprises the following steps: pretreating glass beads to obtain a micron-sized rough surface; preparing conductive paste containing large-particle graphene and water-based acrylic resin; at least three continuous spraying fluidized beds which are connected in series are adopted, and the surfaces of the microbeads are coated with bonding layers, conductive layers and protective layers in sequence; and finally, continuous curing and screening are carried out. According to the method, efficient, continuous and large-scale production of the conductive aggregate is achieved, and the problems that graphene is prone to agglomeration and uneven in dispersion and the coating binding force of a traditional process is poor are effectively solved. The obtained conductive aggregate is excellent in conductivity, good in solvent resistance, high in adhesive force and suitable for the fields of anti-static mortar, resin self-leveling materials, coatings and the like.
Owner:BLUEBEST (TIANJIN) BUILDING MATERIALS CO LTD
Titanate compound fine particle powder and method of production therefor
An embodiment of the present invention pertains to a titanate compound fine particle powder containing a modified titanate compound powder. Specifically, the titanate compound fine particle powder provides a titanate compound powder dispersion capable of suppressing, with a small amount of a polymer dispersant, the aggregation and re-aggregation of particles. Another embodiment of the present invention pertains to a titanate compound powder dispersion that exhibits excellent dispersibility in various solvents. Still another embodiment of the present invention pertains to an economically and industrially advantageous method for producing a titanate compound fine particle powder. Provided is a titanate compound fine particle powder that contains a modified titanate compound powder including cellulose nanofibers and a titanate compound powder. The cellulose nanofibers and the titanate compound adhere to or adsorb to each other. The ratio of the total carbon content of the titanate compound fine particle powder and the BET specific surface area of the titanate compound fine particle powder is 0.006 or less. Also provided is a method for producing the titanate compound fine particle powder, the method including mixing an unmodified titanate compound powder and the cellulose nanofibers, and then drying the mixture.
Owner:TODA KOGYO CORP
Coating composition and method for producing coating composition
ActiveEP4177316B1Pigment treatment with macromolecular organic compoundsPigment treatment with organosilicon compounds
To provide a coating film having higher luminance. A coating composition including a coating-film-forming resin and a pigment, wherein: the pigment includes a scaly vapor-deposited metal pigment; and a cured coating film of the coating composition has a sparkle intensity (Si) at an angle of incidence of 45° of 20 or higher, a sparkle area (Sa value) of 10 or higher, and a granularity value (G value) that exceeds 10.
Owner:NIPPON PAINT AUTOMOTIVE COATINGS
Brightening materials, electromagnetic wave permeable coatings and painted products
PendingJP2026070301APigment treatment with macromolecular organic compoundsElectrically-conductive paintsPolymer scienceNanoparticle
This invention provides an electromagnetic wave-transmitting coating that achieves both electromagnetic wave transmittance and aesthetic appeal by enabling the arrangement of glossy materials as densely and highly oriented as possible within the coating film. [Solution] A luminous material 31 to be dispersed in a coating film having electromagnetic wave permeability, comprising a conductive luminous pigment 32 and a coating portion 33 consisting of a non-conductive resin component and nanoparticles 34 dispersed in the resin component, which covers the surface of the luminous pigment 32 to a thickness of 0.7 μm or more and 3.0 μm or less.
Owner:MAZDA MOTOR CORP
Dispersion for black partition wall materials
To provide a dispersion for black partition materials that can increase the taper angle of black partition material, also decrease its reflectance, and allows for making a high-precision display.SOLUTION: A dispersion for black partition materials contains lactam black, an acrylic dispersant, a resin, and a solvent. The lactam black has a volume-based particle size (D50 value) of 20-60 nm and a volume-based particle size (D90 value) of 40-110 nm. The acrylic dispersant contains a block copolymer.SELECTED DRAWING: None
Owner:SAKATA INX
Surface coated abrasive particles for tungsten buff applications
The invention provides a chemical-mechanical polishing composition comprising (a) an abrasive comprising silica particles and alumina particles, wherein the alumina particles are surface coated with an anionic polymer, and (b) water. The invention also provides a method of chemically mechanically polishing a substrate, especially a substrate comprising tungsten, silicon oxide, and nitride, with the polishing composition.
Owner:CMC MATERIALS INC
Preparation method of high dispersibility zinc oxide based on online modification of discharge waste heat
PendingCN122234638APigment treatment with macromolecular organic compoundsPigment treatment with organosilicon compounds
This invention belongs to the field of inorganic powder modification technology for rubber, specifically relating to a method for preparing highly dispersible zinc oxide based on online modification using residual heat from the discharge process. Addressing the problems of indirect zinc oxide easily sticking to the wall and agglomerating after high-temperature discharge and high energy consumption and poor dispersibility during room-temperature modification, this invention proposes: directly feeding indirect zinc oxide into a continuous modification device while it is still hot (90-160°C); adding a modifier to the hot powder, and using the material's own residual heat to complete surface treatment within 30-180 seconds; the modifier is a composite dispersant or a silane modifier, the former melting at hot to form a physical coating layer, and the latter undergoing in-situ chemical bonding and grafting with the hydroxyl groups on the zinc oxide surface; finally, cooling to below 40°C yields the finished product. This invention utilizes residual heat from the discharge process to complete modification in one step, eliminating the need for additional heating and significantly saving energy; it inhibits cooling agglomeration from the source, resulting in a product with an angle of repose of less than 30°, stable storage, and improved dispersibility in rubber by more than 30%.
Owner:CHANGZHOU WUZHOU ENVIRONMENTAL PROTECTION TECH CO LTD
Composition for forming thermally conductive material, thermally conductive material, and surface-modified inorganic substance
ActiveEP4001340B1Heat-exchange elementsPigment treatment with macromolecular organic compoundsPolymer scienceConductive materials
Owner:FUJIFILM CORP
Process for the production of an effect pigment preparation, a thermoplastic resin composition comprising the effect pigment preparation and a coating material or ink comprising the effect pigment preparation
The present application aims to provide an effect pigment preparation which does not require heating when mixing raw materials, is compatible with a thermoplastic resin, a thermoplastic resin composition containing the effect pigment preparation, and a method for producing a paint or ink containing the effect pigment preparation. According to the present application, there is provided a method for producing an effect pigment preparation, a thermoplastic resin composition containing the effect pigment preparation, and a paint or ink containing the effect pigment preparation, the effect pigment preparation being characterized by containing, in total, 99 mass% or more of an effect pigment and a polyalphaolefin (PAO), the PAO being liquid at 40°C, and, with respect to the effect pigment preparation, the effect pigment being 75 mass% or more and 95 mass% or less, the PAO being 5 mass% or more and 25 mass% or less, and a volatile organic compound being 1 mass% or less.
Owner:TOYO ALUMINIUM KK
Preparation method of flaky magnesium hydroxide flame retardant
PendingCN122011806AMaterial nanotechnologyPigment treatment with macromolecular organic compoundsPhysical chemistryLimiting oxygen index
The invention relates to a preparation method of a flaky magnesium hydroxide flame retardant, belonging to the technical field of inorganic material preparation, and the preparation method of the flaky magnesium hydroxide flame retardant comprises two steps of precipitation method synthesis and epoxy coating. According to the obtained flaky magnesium hydroxide flame retardant, the particle size distribution tested by a laser particle size analyzer is that D10 is 0.022-0.034 [mu] m, D50 is 0.591-0.608 [mu] m, and D90 is 1.398-1.749 [mu] m, 40 wt% of the flaky magnesium hydroxide flame retardant is added into EVA, the limit oxygen index of the EVA is increased to 31.1-32.0%, and the UL94 vertical combustion grade can reach V-1.
Owner:SHANDONG AIKE POLYMER MATERIAL CO LTD
Surface-modified metal-doped porous silica
To provide a metal-doped porous silica which can be stably dispersed and maintained by being blended with an article such as a cosmetic exemplified by a permanent wave treatment agent.SOLUTION: The metal-doped porous silica of the present invention is surface-modified with a polymer containing a vinylpyrrolidone unit. Specific examples of the polymer containing a vinylpyrrolidone unit include a copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate, and polyvinylpyrrolidone.SELECTED DRAWING: None
Owner:TOYO SEIKAN GRP HLDG LTD
A method for preparing an ink-absorbing coating for photographic paper comprising nanobohmite powder
The application provides a preparation method of a photo paper ink absorption coating containing nanoboehmite powder, and comprises the following steps: preparing nanoboehmite powder; dispersing the nanoboehmite powder into a solvent to obtain a filler dispersion liquid; preparing an adhesive solution by using an adhesive; mixing the filler dispersion liquid and the adhesive solution to obtain a mixed slurry; coating the mixed slurry on photo paper and performing solidification to obtain the photo paper ink absorption coating; wherein the nanoboehmite powder is prepared by using weak base, industrial aluminum salt and weak acid as raw materials, performing a low-temperature hydrothermal crystallization reaction at 120-140 DEG C in the presence of a surface modifier after two-step pH adjustment, and the nanoboehmite powder has uniform particle size distribution, high specific surface area and high dispersity; the photo paper ink absorption coating prepared by using the nanoboehmite powder as filler has fast ink absorption speed, uniform ink diffusion, no ink floating phenomenon and high gloss.
Owner:TIANJIN PASSION ADVANCED MATERIAL TECH CO LTD
Modified calcium carbonate and preparation process thereof
PendingCN121319658ACalcium/strontium/barium carbonatesPigment treatment with macromolecular organic compoundsModified carbonAnti bacteria
The invention relates to the technical field of modified calcium carbonate, in particular to modified calcium carbonate, which comprises the following structures: an inner core: lithium battery recycled calcium carbonate slag, which comprises 1.2-1.8 wt% of Li2CO3 and 0.5-1.2 wt% of MgCO3; the middle layer is a polydopamine (PDA) coating film, the thickness of the polydopamine (PDA) coating film is 50-80 nm, and the polydopamine (PDA) coating film is used for providing active amino (-NH2); the shell is a fluorine-containing silane and polylactic acid-glycolic acid copolymer (PLGA) composite layer, the grafting rate is larger than or equal to 90%, and the molar ratio of lactic acid to glycolic acid of PLGA is 75: 25. Quantized data of performance improvement and dispersibility are as follows: the oil absorption value is 18 ml / 100 g (compared with 28-32 ml / 100 g in the prior art), and the bulk density is 0.25 g / cm < 3 > (loose agglomeration). Functions are as follows: flame retardance: the oxygen index (LOI) reaches 34.5% (no flame retardance exists in the prior art); the antibacterial property is that the Escherichia coli inhibition rate is 99.2% (ASTM E2149 standard), and the environmental protection property is that 2.8 tons of limestone can be reduced for each ton of products, and 1.2 tons of CO2 emission can be reduced.
Owner:HENAN MEIYU ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Surface-treated fillers, dental compositions containing such fillers, methods for making and uses thereof - Patents.com
The present invention relates to a dental composition comprising a hardenable component and a surface-treated filler comprising filler particles whose surfaces have been treated with a surface treatment agent, wherein the surface treatment agent is characterized by the following properties: at least one (meth)acrylate moiety, at least one hydrolyzable silane moiety, only one urethane moiety, a linear alkylene moiety AM1 linking the at least one (meth)acrylate moiety to the urethane moiety, a linear alkylene moiety AM2 linking the at least one hydrolyzable silane moiety to the urethane moiety, and the linear alkylene moiety AM1 containing more carbon atoms than the linear alkylene moiety AM2. The present invention also relates to a method for producing such a dental composition, the use of the dental composition in a dental tooth restoration method, and a kit of parts comprising the dental composition.
Owner:SOLVENTUM INTELLECTUAL PROPERTIES CO
Organic modified titanium dioxide delustering agent, modified polyester fiber and preparation and application of organic modified titanium dioxide delustering agent and modified polyester fiber
PendingCN121136480AMonocomponent polyesters artificial filamentPigment treatment with macromolecular organic compoundsFiberPolymer science
The invention relates to an organic modified titanium dioxide delustering agent, a modified polyester fiber and preparation and application thereof. The organic modified titanium dioxide delustering agent is a hyperbranched polyester modified titanium dioxide delustering agent. The preparation method is simple, the reaction condition is mild, the hydrophilicity of the modified titanium dioxide is weakened, and the hydrophobicity is enhanced; the grafted modifier can resist high-temperature spinning temperature and cannot be degraded in the spinning process, and the modified titanium dioxide is suitable for being used as matting agent master batch and is suitable for the spinning process of polyester fibers.
Owner:DONGHUA UNIV +1
Magnesium hydroxide with catalytic and hydrophobic functions and preparation method thereof
PendingCN121178154AMetal/metal-oxides/metal-hydroxide catalystsPigment treatment with macromolecular organic compoundsCarbon chainSlurry
The invention provides magnesium hydroxide with catalytic and hydrophobic functions and a preparation method thereof, and relates to the technical field of inorganic flame retardants. The preparation method comprises the following steps: mixing and grinding a magnesium hydroxide coarse material and a surface modifier to obtain magnesium hydroxide particles, and performing wet grinding on the magnesium hydroxide particles and a transition metal salt solution to obtain transition metal coated magnesium hydroxide slurry; and adding an organic amine modifier into the slurry, and grinding to obtain the magnesium hydroxide with catalytic and hydrophobic functions. According to the preparation method disclosed by the invention, magnesium hydroxide is modified by utilizing the catalytic char formation performance of transition metal ions and the pH regulation function, coordination function and hydrophobicity of an organic amine long carbon chain; the obtained magnesium hydroxide with catalytic and hydrophobic functions has good fluidity, dispersibility, catalytic char formation capability and smoke suppression effect, the addition amount of magnesium hydroxide in the use process is reduced, and the influence of magnesium hydroxide on the mechanical properties of a composite material is reduced.
Owner:JIANGXI GUANGYUAN CHEM +2
High-dispersity pigment carbon black and preparation method thereof
PendingCN121537817APigment treatment with macromolecular organic compoundsPigment physical treatmentPolymer scienceFunctional monomer
The invention discloses a preparation method of high-dispersity pigment carbon black, which comprises the following steps: S1, carrying out heat treatment on original carbon black under the protection of inert gas to obtain surface-activated carbon black; s2, carrying out heating reaction on the carbon black and grafting molecules to obtain functional carbon black of which the surface is grafted with specific active groups after the reaction; s3, dispersing the carbon black in an organic solvent, firstly adding an olefin pyridine monomer to carry out substitution reaction, then adding a functional monomer containing a dynamic covalent bond to carry out polymerization reaction, and forming a polymer brush on the surface of the carbon black; and S4, carrying out post-treatment to obtain the high-dispersity pigment carbon black. According to the preparation method, high steric hindrance and solvation rejection are given to the carbon black through a covalent anchoring-polymer brush structure, the sedimentation rate of an alcohol ester system is smaller than 5%, and long-term thermal aging stability is maintained by virtue of a stress relaxation mechanism of a dynamic disulfide bond; the harsh requirements of high-end printing ink, high-solid-content coatings and polymer master batches on high blackness, low sedimentation and durability can be met.
Owner:浙江长鸿生物材料有限公司
Composite powder for white water-based paint and method for preparing the same
The application discloses a preparation method of a composite powder for white water-based paint. The composite powder is prepared by introducing polymer microspheres with improved water dispersibility of inorganic nanoparticles, which are formed by copolymerization of unsaturated acid ester monomers under certain conditions, and then making the polymer microspheres cooperatively composite with titanium dioxide and other inorganic fillers. The composite powder has good dispersion stability in a water-based paint system and can maintain high color phase and hiding performance in paint application.
Owner:HENAN UNIVERSITY +1
High-dispersity talcum powder and preparation method thereof
PendingCN121851758AGood dispersionReduce invalid consumptionPigment treatment with macromolecular organic compoundsPigment physical treatmentCelluloseSodium phosphates
The invention belongs to the technical field of talcum powder. The invention provides high-dispersity talcum powder and a preparation method thereof.The preparation method comprises the following steps that S1, zirconium oxide beads are adopted as a grinding medium, the grinding medium and grinding materials are added into a charging barrel of a vertical sand mill, the grinding materials comprise talcum powder raw materials, carboxymethyl cellulose graft copolymers and sodium hexametaphosphate, the rotating speed is adjusted to be 9.5 m / s, the grinding time is 3-12 h, and a mixture is obtained; grinding to obtain ground powder; s2, adding an aqueous dispersion into the ground powder obtained in the S1, and adjusting the rotating speed to 9.5 m / s and the grinding time to 8-36 hours to obtain ground slurry; and S3, drying and crushing the ground slurry obtained in the S1 to obtain the high-dispersity talcum powder. The carboxymethyl cellulose grafted copolymer is added into the grinding material, so that the viscosity of grinding slurry is reduced, and meanwhile, the dispersity of talcum powder particles is improved.
Owner:LIAONING AIHAI TALC CO LTD
Synthesis of melamine polymer modified zinc oxide nanoparticles as a corrosion inhibitor
PCT designated stageWO2026029798A3Material nanotechnologyOrganic chemistryPolymer modifiedNanoparticle
A method for synthesizing melamine polymer modified zinc oxide nanoparticles is provided. In the method, polymer grafted zinc oxide nanoparticles are provided, and melamine is grafted onto the polymer grafted zinc oxide nanoparticles by adding melamine in the presence of a carboxy group activating reagent to the polymer grafted zinc oxide nanoparticles to form the melamine polymer modified zinc oxide nanoparticles. A method of corrosion inhibition in a wellbore by applying the melamine polymer modified zinc oxide nanoparticles is also provided. Further provided are zinc oxide nanoparticles comprising a melamine polymer of the following formula bonded to oxygen atoms are provided.
Owner:SAUDI ARABIAN OIL CO +2
Composite filler, fluoride-free oil-proof paper based on physical plugging and preparation method of fluoride-free oil-proof paper
The invention discloses a composite filler, fluoride-free oil-proof paper based on physical plugging and a preparation method of the fluoride-free oil-proof paper, and belongs to the technical field of fluoride-free oil-proof paper. Montmorillonite is subjected to chitosan modification to enhance the dispersity and stability of montmorillonite in a paper pulp system, so that the montmorillonite forms a continuous layered barrier structure in a paper sheet, and then alkyl-containing amidated nano-cellulose is introduced as a flexible connection component, so that the composite filler can form a synergistic chimeric structure with a paper-based fiber network; the fluorine-free oil-proof paper can realize excellent oil-proof performance without depending on a surface coating, keeps stable oil-proof effect under actual use conditions of friction, folding and the like, and is suitable for application scenes such as food packaging and the like with higher requirements on environmental protection property and use reliability.
Owner:济宁聚升造纸有限公司