386results about "Paints for electrolytic applications" patented technology

Embodiments provide an ink composition, a film manufactured using the ink composition, and an electrophoretic display device including the film. The ink composition includes (A) a semiconductor nanorod, and (B) a dispersion medium, wherein the dispersion medium includes: (B1) a compound which has a viscosity at 25° C. of 70 cps or less and has a dielectric constant of 5 or more; (B2) a compound which has a viscosity at 25° C. of 80 cps or more or is a solid and has a dielectric constant of 5 or more; (B3) a compound which has a viscosity at 25° C. of 20 cps or more or is a solid and has a dielectric constant of less than 5; and (B4) a compound which has a viscosity at 25° C. of 12 cps or less or is a solid and has a dielectric constant of 4 to 7.5.

The invention discloses a low-temperature curing high-throwing-power cathode electrophoretic coating and a preparation method and application thereof, and belongs to the field of automobile coating materials, the coating is composed of epoxy resin, a fluorosilicone copolymerization type epoxy modifier, a polyamino siloxane-acrylic acid hybrid and other components, and performance improvement is achieved through the synergistic effect of the two brand-new modifiers. Wherein the fluorine-silicon copolymerization type epoxy modifier is prepared by taking bisphenol A epoxy resin as a framework, introducing fluorine-containing alkyl and siloxane groups and carrying out ultraviolet reaction, so that the surface energy is reduced, and low-temperature crosslinking is promoted; the polyamido siloxane-acrylic acid hybrid takes siloxane as a core, and acrylic acid and polyamido are bridged through isocyanate, so that the crosslinking density and the water solubility are enhanced. When the coating is prepared, the two modifiers are mixed with epoxy resin, a solvent and the like, and the coating is prepared through dispersion and dilution. The coating can be cured at low temperature, so that a uniform thick film is obtained in an inner cavity of a complex workpiece, and meanwhile, the coating has excellent corrosion resistance and adhesive force and is suitable for efficient and environment-friendly coating of an automobile body and parts.

The invention relates to the technical field of high polymer materials, in particular to a high-hardness wear-resistant electrophoretic coating and a preparation method thereof, and the high-hardness wear-resistant electrophoretic coating comprises the following components in parts by mass: 40-60 parts of polyether modified epoxy resin, 5-15 parts of Al2O3-coated SiO2 modified composite powder, 2-5 parts of a neutralizer, 0.5-2 parts of a flatting agent, 0.2-1 part of a defoaming agent, 3-8 parts of a curing agent and 15-30 parts of deionized water. By optimizing the components and the process, the electrophoretic paint capable of preparing a stable high-strength and high-wear-resistance coating is prepared.

The invention discloses a preparation process of a rare earth precipitation resistant electrophoretic coating for an automobile body. The preparation process comprises the following steps: S1, preparing a stable solution; s2, preparing a rare earth chelating solution; adding lanthanum lactate into the stable solution for multiple times, and adding ammonium ceric sulfate for multiple times after the lanthanum lactate is completely dissolved; s3, preparing a resin base solution; s4, preparing mixed slurry; s5, adding a solvent and an auxiliary agent; a five-membered ring chelate with thermodynamic stability is formed by carboxyl, hydroxyl and rare earth elements in sodium citrate, rare earth ions can be tightly wrapped through strong coordination bonds, namely, empty orbits of the rare earth ions and lone pair electrons of a chelating agent form coordination bonds, so that the rare earth ions cannot be dissociated in a system, and the rare earth ions are prevented from being dissociated in the system. And a path of generating hydroxide precipitates by free rare earth ions is thoroughly blocked, so that rare earth elements are effectively ensured to be uniformly distributed in the electrophoretic paint, and the surface of a raw material treated by a subsequent electrophoresis process is more uniform.

The invention belongs to the technical field of coating compositions, and discloses an electrophoretic coating with high weather resistance and high salt mist resistance and a preparation method thereof. According to the coating, a composite pigment and filler system formed by compounding a surface-modified sheet-shaped physical shielding filler and a calcium / zinc double-ion exchange type corrosion inhibition filler is adopted, and the surface-modified sheet-shaped physical shielding filler forms a compact labyrinth structure to prolong a corrosion medium permeation path; the corrosion inhibition filler releases Ca < 2 + > / Zn < 2 + > under the stimulation of chloride ions to generate a composite precipitation membrane in situ to block electrochemical corrosion; the two components are co-ground and pre-dispersed and chemically bonded with a resin matrix through a silane coupling agent, so that the compactness, the adhesive force and the self-repairing capability of the coating are improved. The electrophoretic coating does not contain hexavalent chromium and is suitable for high-end protection scenes such as automobiles and ocean engineering.

The invention discloses electrophoretic coating liquid, an electronic ink layer and an electrophoretic display assembly, and relates to the technical field of electronic paper display. The electrophoresis coating liquid provided by the invention contains the surfactant, the rheological agent, the water-based resin adhesive, the defoaming agent, the emulsifier and the microcapsules, and by controlling the particle size distribution of the microcapsules, the microcapsules with the particle size D10 of 20-25 microns, the particle size D90 of 45-50 microns and the particle size D50 of 27-30 microns are selected, so that local deformation of large-particle-size capsules caused by stress concentration in the coating and drying process is avoided; in addition, the small-particle-size capsule shortens the migration path of electrophoretic particles, so that the electric field driving efficiency is improved, and the response time is effectively prolonged. By optimizing the ratio of the microcapsules to the water-based resin adhesive, the water-based resin adhesive can fill gaps of the microcapsules more sufficiently, a uniform supporting network is formed around the microcapsules after curing, capsule breakage caused by mechanical extrusion is reduced, and the breakage rate of the capsules is effectively reduced.

The present invention is directed towards a coating composition comprising a film-forming polymer comprising active hydrogen-containing functional groups; a blocked polyisocyanate curing agent comprising a blocking group derived from a blocking agent comprising an alpha-hydroxy amide, ester or thioester; and a curing catalyst that does not contain tin, lead, iron, zinc or manganese. Also disclosed are coatings, coated substrates, and methods of coating a substrate.

Disclosed herein is an aqueous cathodically depositable electrodeposition coating material composition including at least one binder dispersion (I) including at least one cathodically depositable polymer (a) and at least one pigment paste (II) including at least one pigment and / or filler, where manufacture of the electrodeposition coating material composition includes mixing the binder dispersion (I) and the pigment paste (II), and where the composition also includes at least one alkoxylated polyethyleneimine (b) and where at least one alkoxylated polyethyleneimine (b) is part of the at least one binder dispersion (I) and / or part of the at least one pigment paste (II).

The present invention in certain embodiments relates to an ultraviolet absorber having a structure represented by formula (I) or formula (II) as disclosed herein and compositions, polymer materials, articles of manufacture, methods and uses thereof.

To provide an environmentally friendly fire retardant thermal insulation paint, excellent in adhesiveness of a coating, difficult to fall off, and having relatively high fire retardancy, thermal insulation and crack resistance and a producing method thereof.SOLUTION: A fire-retardant thermal insulation paint is produced from raw materials composed, by weight percentage, of 8 to 15% styrene-acrylic emulsion, 10 to 18% adhesion promoter, 10 to 20% thermal insulation agent, 20 to 30% fire retardant, 2 to 5% wetting dispersant, 3 to 6% viscosity modifier, 4 to 9% other additives, and the remainder water. The producing method is as follows: In step S1, the viscosity modifier and water are mixed to prepare a mixed solution; in step S2, the adhesion promoter and wetting dispersant are mixed with the mixed solution to prepare a dispersion; in step S3, the fire retardant is mixed with the dispersion to prepare a flame-retardant dispersion; and in step S4, the styrene-acrylic emulsion, thermal insulation agent, and other additives are mixed with the fire-retardant dispersion.SELECTED DRAWING: None

The invention discloses a high edge protection type cathode electrophoretic coating and a preparation method thereof. Epoxy resin and a cyclic hydroxyl compound are subjected to a chain extension reaction, and a cyclic substituent group is introduced; adding amine chain extension reactants containing multiple active hydrogen into the chain extension product to form a local branched structure; the preparation method comprises the following steps: carrying out amination modification by adopting an aliphatic micromolecular amine mixture to obtain modified epoxy resin with a short-chain comb-type branched structure; sequentially adding a curing agent, a reinforcing material and a neutralizer, and continuously stirring to form a stable resin emulsion; and mixing the color paste, the resin emulsion and pure water according to a mass ratio to obtain the coating. By optimally designing the resin structure, on one hand, coating film flowing in the curing process is inhibited, sufficient film thickness and protection force of the edge are ensured, and on the other hand, when the edge corrosion resistance is improved, the mechanical performance, chemical performance and appearance quality of a coating in a non-edge area are prevented from being sacrificed, the overall performance is cooperatively improved, and the multi-working-condition service requirement of an automobile is met.

The invention discloses an aluminum alloy surface super-amphiphobic coating with durable wear resistance and corrosion resistance and a preparation method of the aluminum alloy surface super-amphiphobic coating, and the coating comprises the following components in parts by weight: 10-15 parts of nanoscale silicon dioxide particles, 10-15 parts of nanoscale titanium dioxide particles, 5-10 parts of polytetrafluoroethylene (PTFE) and an epoxy resin matrix serving as a carrier. The preparation method of the coating comprises the following steps: premixing the raw materials, uniformly depositing the components in the premixed solution on the surface of the aluminum alloy through an electrophoresis method, and drying to form the super-amphiphobic coating. The coating is free of pollution in the production and use processes, a prepared coating is high in crosslinking density and low in curing shrinkage rate and has the characteristics of high wear resistance, high hardness and super hydrophobicity and oleophobicity, meanwhile, the aluminum alloy surface is pretreated, a stable and compact coating film is formed, oxygen can be isolated, the corrosion resistance of the coated surface is improved, and the service life of the coating is prolonged. The coating can continuously protect the coated surface for a long time, and has a wide application prospect.

The present invention relates to a cathodically depositable aqueous electrodeposition coating composition comprising at least one cathodically depositable polymer (a) and at least one carbon black pigment (b), wherein the at least one carbon black pigment (b) has a number-based median primary particle size (d) of at least 50 nm and at most 200 nm. N,50％ ); a method for at least partially coating a conductive substrate by a cathodic electrodeposition coating method, which comprises at least steps (1) to (5), including the step (1) of at least partially immersing the substrate in an electrodeposition coating bath comprising the electrodeposition coating composition of the present invention; a conductive substrate at least partially coated with the baked electrodeposition coating composition of the present invention and / or obtainable by the method of the present invention; and use of the carbon black pigment (b) for improving corrosion protection and / or film formation uniformity.

A method for manufacturing a cover member for electronic devices according to certain embodiments of the present disclosure may comprise: a step for forming a magnesium plate; a step for performing primary CNC processing on the magnesium plate using a predetermined cutting oil; a step for performing a primary pretreatment on the magnesium plate using chromate or micro arc oxidation (MAO); a step for performing a primary surface-treatment on the magnesium plate by bake-coating or electrodeposition coating; a step for performing secondary CNC processing on a first region of the magnesium plate using an alcohol-containing cutting oil; a washing and drying step; a step for performing a secondary pretreatment for preventing oxidation on the first region; and a step for performing a secondary surface-treatment on the first region by bake-coating or electrodeposition coating.

The invention belongs to the technical field of coatings, and discloses a corrosion-resistant high-impact-resistant electrophoretic coating and a preparation method thereof. The coating comprises a cationic water-based resin emulsion, flaky nano clay with epoxy groups grafted on the surface, a curing agent, a cosolvent and a functional additive, the core of the method is that through electric field driving in the electrophoretic deposition process, resin micelles and modified nano clay form a bionic micro-nano laminated structure in which hard inorganic sheet layers and flexible organic layers are alternately arranged on the surface of a cathode in situ, and interface bonding between the sheet layers is enhanced through chemical bonding. The bionic micro-nano laminated structure with clear periodicity and a chemical bonding interface is constructed through an in-situ co-deposition technology driven by an electric field, and the contradictions that hardness and toughness cannot be achieved at the same time and impact resistance and corrosion resistance are difficult to cooperate in the prior art are solved; the method is suitable for the high-end industrial fields such as automobile bodies, high-speed rail bogies, offshore wind power towers and the like with strict requirements on comprehensive protection performance.

The invention discloses a high-corrosion-resistance electrophoretic coating and a preparation method thereof, and belongs to the technical field of electrophoretic coatings. The preparation method of the coating comprises the following steps: S1, mixing epoxy resin, a thioether compound with an active group at the end position, a chain extender, triphenylphosphine, an organic solvent 2, an amino catalyst and a neutralizer, and carrying out heat preservation and chain extension to obtain thioether modified epoxy resin; s2, aminating, neutralizing and re-emulsifying the thioether modified epoxy resin in the step S1, an aminating agent, an organic solvent 1, a curing agent, a neutralizing agent and deionized water to obtain a high-corrosion-resistance emulsion; s3, mixing and grinding the thioether modified epoxy resin in the step S1 with pigment, a dispersing agent and deionized water to obtain high-corrosion-resistance color paste; s4, mixing the high-corrosion-resistance emulsion in S2 and the high-corrosion-resistance color paste in S3 according to the mass ratio of 4: 1 to 8: 1 to obtain the high-corrosion-resistance electrophoretic coating. And by adopting the thioether modified epoxy resin, the obtained coating has excellent corrosion resistance, mechanical property and flame retardant property at the same time.

The invention provides an edge-corrosion-resistant auxiliary agent for a cathode electrophoretic coating and a preparation method of the edge-corrosion-resistant auxiliary agent, and belongs to the technical field of cathode electrophoretic paints.The preparation method comprises the following steps that amino-terminated nitrile rubber and polypropylene glycol diglycidyl ether are subjected to an addition reaction in a solvent, and epoxy resin modified amino-terminated nitrile rubber is obtained; mixing the epoxy resin modified amino-terminated nitrile rubber with a solvent, adding a mixture of the solvent and benzoyl peroxide into the mixture, and carrying out polymerization reaction to obtain repolymerized epoxy resin modified amino-terminated nitrile rubber; and sequentially adding acid water and deionized water, and stirring to obtain the edge corrosion resistant auxiliary agent. According to the cathode electrophoretic paint, the amino-terminated nitrile rubber is modified by the polypropylene glycol diglycidyl ether, so that the mechanical property and the flexibility of the cathode electrophoretic paint are improved; and then benzoyl peroxide is used for initiating repolymerization of the epoxy modified nitrile rubber to reduce the fluidity of the electrophoretic paint in the baking process, so that the edge corrosion resistance of the cathode electrophoretic paint is improved.

To provide a biocompatible article by grafting an organic coated film onto a conductive or semi-conductive surface.SOLUTION: There is provided a biocompatible article containing an organic coated film acceptable for ionic transportation with a conductive or semi-conductive surface or a part of the surface, electrically grafted to the surface or the part thereof, and electrically grafted to the surface or the part thereof by electric reduction of a solution containing at least one kind of diazonium salt, and a chain polymerizable functional group, and at least one kind of macro article which is a precursor material of the organic coated film.SELECTED DRAWING: Figure 1

The present invention provides a cationic electrodeposition coating composition with a rust prevention property enhanced by improving the adhesion and the blocking property of a coating film obtained from a cationic electrodeposition coating composition as compared with conventional ones. The present invention provides a cationic electrodeposition coating composition including an aminated epoxy resin and a blocked polyisocyanate curing agent, wherein the aminated epoxy resin is an aminated epoxy resin obtained by reacting an amine compound with an epoxy resin, the aminated epoxy resin has a molecular weight distribution of 2.7 or less, and a rate of elongation of an electrodeposition coating film formed by applying the cationic electrodeposition coating composition to a steel sheet such that a cured film thickness is 20 μm, followed by baking at 160° C. for 15 minutes, is 0.1 to 4.5%.

The invention relates to the technical field of cathode electrophoretic paint, and discloses an asymmetric double-blocked isocyanate curing agent as well as a preparation method and application thereof. Based on the reaction activity difference of primary carbon and secondary carbon NCO groups in isophorone diisocyanate molecules, a step-by-step asymmetric sealing strategy is adopted: in the first stage, a hydrophilic chain extender containing a tertiary amine structure is utilized to preferentially react with high-activity primary carbon NCO, and an internal catalytic center and a hydrophilic group are anchored in a molecular skeleton; and in the second stage, the active methylene compound and the bio-based long-chain phenol are used for carrying out hybrid dual-sealing on the residual secondary carbon NCO with relatively large steric hindrance. According to the preparation of the curing agent, the curing agent integrates internal catalysis, stepped curing and self-emulsifying functions, the deblocking energy barrier is effectively reduced, and 140-DEG C low-temperature curing or high-temperature high-performance curing can be realized under the tin-free catalysis condition.

The present invention relates to an electrodepositable coating composition, comprising a film-forming polymer containing an ionic salt group, the film-forming polymer comprising an active hydrogen functional group; a blocked polyisocyanate curing agent comprising a blocking group, wherein at least 30% of the blocking groups, based on the total number of the blocking groups, comprise 1,2-polyol as a blocking agent; and a bismuth catalyst. A coating, a coated substrate, and a method for coating a substrate are also disclosed.

The invention relates to the technical field of electrophoresis coatings, in particular to an electrophoresis-non-electrophoresis composite coating and a preparation method thereof. The invention provides an electrophoresis-non-electrophoresis composite coating. The composite coating comprises an electrophoresis coating and a non-electrophoresis coating compounded on the surface of the electrophoresis coating, the component of the electrophoretic coating comprises polyimide; the component of the non-electrophoretic coating comprises macromolecular resin; the absolute value of the difference between solubility parameters of the polymer resin and the polyimide is less than 1.3 (J / cm < 3 >) 1 / 2; according to the prepared electrophoresis-non-electrophoresis composite coating, the excellent adhesiveness between an electrophoresis coating and a non-electrophoresis coating can be guaranteed, and the comprehensive performance, such as insulativity, scratch resistance, cohesiveness, corona resistance and / or PDIV, of the composite coating can be effectively improved.

The present invention provides a method for producing a polymeric composite of a cathodically depositable polymer and a polymerizable polymeric composite of a cathodically depositable polymer, comprising: (I) at least one aqueous binder dispersion comprising at least one cathodically depositable polymer (a) and at least one crosslinker component (b); (II) at least one pigment paste containing at least one pigment and / or filler (c) and at least one polymer as grinding resin; The present invention relates to an aqueous cathodically depositable electrodeposition coating material composition comprising: wherein the composition also comprises at least one composite particle (p) comprising at least one metal-containing catalyst (pc) and at least one (meth)acrylate polymer (mp).

Described are sealing primer compositions that can be used to reduce paint defects such as pops or vapor boil on painted plastic substrates, as well as related methods for sealing plastic substrates, and scaled plastic substrates. Sealing primer compositions of the invention include a functionalized polydiene polymer such as a hydroxylated or other functional-group-containing polybutadiene polymer.

The invention relates to an aqueous cathodically depositable electrodeposition coating material composition comprising at least one binder dispersion (I) comprising at least one cathodically depositable polymer (a) and at least one pigment paste (II) comprising at least one pigment and / or filler, wherein the production of the electrodeposition coating material composition comprises mixing the binder dispersion (I) and the pigment paste (II), and wherein the composition further comprises at least one alkoxylated polyethyleneimine (b) and wherein the at least one alkoxylated polyethyleneimine (b) is part of the at least one binder dispersion (I) and / or part of the at least one pigment paste (II).

The present invention discloses an insulating coating composition suitable for electrodeposition coating, comprising the following components by weight: 20%-30% of a novolac epoxy or cyclohexanediamine-modified polyphenylene ether multi-branched polymer, 10%-25% of a blocked isocyanate curing agent, 0.1%-0.5% of an acetylenic diol wetting and dispersing agent, 1%-5% of methanesulfonic acid, 0%-50% of a first batch of deionized water, 8%-20% of a second batch of deionized water, and 1%-5% of a polyvinyl alcohol aqueous solution; and a method for preparing the insulating coating composition. The coating of the present invention has excellent insulation, corrosion resistance, and resistance to moisture and heat.

This invention belongs to the technical field of water-based cathodic electrophoretic coatings, specifically relating to a low-temperature curing cathodic electrophoretic coating with high edge coverage and its preparation method. The preparation method includes: firstly, synthesizing a cationic epoxy resin with allyl double bonds in the side chain as the main resin; then pre-incorporating a phenolic resin oligomer and a quaternary phosphine salt latent base into the resin, followed by neutralization and emulsification to obtain a mother liquor; simultaneously, preparing thermally triggered microcapsules with melamine-formaldehyde as the shell, encapsulating a multifunctional thiol compound and a thermal initiator; finally, incorporating the microcapsules into the resin mother liquor to obtain the final product. This invention successfully solves the technical challenge of simultaneously achieving low-temperature curing and high edge coverage in cathodic electrophoretic coatings. The coating can be completely cured at a low temperature of 148-152℃, with an edge film thickness ratio exceeding 82%, and also exhibits excellent salt spray corrosion resistance exceeding 790 hours, significantly improving the edge protection performance and coating efficiency of the workpiece.

The invention discloses a bio-based electrophoretic paint cross-linking agent composition S1. The bio-based electrophoretic paint cross-linking agent composition S1 comprises the following components: a bio-based polyol component; an isocyanate component; the catalyst comprises an organic bismuth or zinc catalyst; the solvent comprises propylene glycol methyl ether acetate or bio-based propylene carbonate. The electrophoretic paint cross-linking agent composition S2 comprises the following components: a cyclic carbonate monomer; a polyene polyamine; a thiol-ene click chemical reagent; an end-capping reagent and an organic tin catalyst component. An electrophoretic paint composition is prepared from the bio-based electrophoretic paint cross-linking agent composition. The invention provides a polyisocyanate cross-linking agent taking castor oil and bio-based polycarbonate diol as raw materials and a carbamate cross-linking agent prepared from cyclic carbonate and polyene polyamine, and the polyisocyanate cross-linking agent and the carbamate cross-linking agent have the following advantages that the bio-based content is greater than or equal to 60%, and the consumption of petroleum resources is reduced; the curing temperature is not more than 140 DEG C; vOC emission is reduced by more than 30%; and the adhesion, salt fog resistance and other properties of the coating reach or exceed those of a traditional system.

The present invention provides an epoxy resin that has excellent curability, when a lowactivity catalyst is used or when used at low temperatures, that has excellent storage stability, and that yields a coating material having excellent coating film finish properties and corrosion resistance. The present invention further addresses an object of providing an amine-modified epoxy resin produced by reacting the epoxy resin with an amine compound, as well as providing a cationic electrodeposition coating material containing the amine-modified epoxy resin. The solution provided is a modified epoxy resin produced by reaction of at least the following (i) and (ii) and having an average polyfunctionalization degree (X1) per molecule of the modified epoxy resin of 0.10 or greater: (i) a compound (α) having one or more epoxy groups, (ii) a compound (β) having a functional group that is reactive with an epoxy group and that has a total functionality of the functional group of 3 or greater, and / or a compound (γ)having a functional group that is reactive with an epoxy group and that has a total functionality of the functional group of 1 or 2, and the average polyfunctionalization degree (X1) per molecule of the modified epoxy resin being represented by Equation (1) below: Equation (1): Average Polyfunctionalization Degree (X1) = Number of Terminals Per Molecule of Modified Epoxy Resin - 2

The invention relates to the technical field of electrophoretic paint, and particularly discloses electrophoretic paint based on a phase change material, a composite coating, a preparation method and application. The electrophoretic paint based on the phase-change material is prepared from the following raw materials in parts by weight: 10-15 parts of phase-change material microcapsules MicroPCM, 35-70 parts of epoxy resin, 15-25 parts of TPU resin, 1-3 parts of an anti-settling agent and 0.5-2 parts of other auxiliaries, the phase change material microcapsule MicroPCM is subjected to surface spraying treatment by using a functional additive before application, and the functional additive comprises the following components in parts by weight: 2-5 parts of graphene oxide, 0.8-1.2 parts of lauryl sodium sulfate, 5-10 parts of propylene glycol monomethyl ether and 80-90 parts of a polyvinyl alcohol solution. According to the application, the dispersity and compatibility of the phase-change material microcapsule MicroPCM in the electrophoretic paint can be improved through the application of the functional additive, so that the formed electrophoretic paint layer structure can show excellent temperature control stability, and further the stable exertion of the corrosion resistance of the outer composite layer structure of the battery shell is ensured.