292 results about "Acrylic polymer" patented technology

Embodiments of the disclosure include lubricious coatings. In an embodiment the disclosure includes a lubricious coating for a medical device including an acrylic acid polymer, an acrylamide copolymer comprising at least one photoreactive group, and a cross-linking agent comprising at least two photoreactive groups. The coating can be used on a catheter surface to facilitate its movement in the body.

Provided are: a water-dispersed pressure-sensitive adhesive composition that has an excellent pressure-sensitive adhesive strength, and that can achieve both of adhesiveness to an adherend and peelability; and a pressure-sensitive adhesive sheet for re-peeling using the water-dispersed pressure-sensitive adhesive composition. The water-dispersed pressure-sensitive adhesive composition includes: a water-dispersed acrylic polymer; an active energy ray-curable resin; and a photopolymerization initiator, wherein the water-dispersed acrylic polymer is a polymer having two or more glass transition temperatures.

The invention discloses an anticorrosive coating composition based on a nano hybrid and a preparation method of the anticorrosive coating composition, and relates to the technical field of powder coatings. Comprising the following components in parts by weight: 60-70 parts of fluorosilicone modified epoxy resin, 8-10 parts of an aminoethylated acrylic polymer, 4-8 parts of a functionalized nano hybrid, 4-6 parts of a curing agent, 0.3-1.2 parts of an accelerant, 1-2 parts of benzoin, 2-4 parts of a functional aid, 10-15 parts of a micron-sized filler and 1-2 parts of a coupling agent. The curing agent is prepared by compounding dicyandiamide, bicyclo [2.2. 1] heptane dimethylamine and 3, 5-diamino-1, 2, 4-triazole according to a mass ratio of (3 to 5): 1: (0.8 to 1.2). The coating composition is high in adhesive force and excellent in impact resistance and corrosion resistance.

The invention relates to a method for treating printing and dyeing wastewater. The method comprises the following steps: neutralization regulation, primary filtration for removing scum, decoloration and flocculation, secondary filtration, pH regulation, catalytic degradation under visible light, MBR membrane treatment and discharge. The printing and dyeing wastewater treatment process provided by the invention is compact in link, the first-stage filtration, decoloration flocculation and second-stage filtration in the treatment process all adopt conventional technical means in the field, the operation is simple and convenient, the cost is low, and a special bismuth-based aerogel composite material is used as a catalyst for photocatalytic degradation at the rear end; the aerogel is prepared by cross-linking a modified graphene oxide / BiOCOOH composite photocatalyst with an acrylic polymer matrix and then carrying out supercritical drying, so that macroscopic immobilization of a nano catalyst is realized. According to the method, the technological process is compact, the cationic dye which is difficult to biologically treat can be efficiently degraded, the industrial problems that a powder catalyst is easy to lose and difficult to recycle are solved, key indexes such as COD and chromaticity of the treated wastewater are remarkably reduced, and the treated wastewater can be discharged after reaching the standard.

The application provides a light valve dimming film and a preparation method and application thereof. The dimming film comprises a suspension and a base polymer, the suspension comprises an acrylic polymer and dimming particles, and the base polymer is selected from an epoxy resin; the mass ratio of the dimming particles, the acrylic polymer and the epoxy resin is (0.1-5):100:200-350. The dimming film uses the epoxy resin as the base polymer, the acrylic polymer in the suspension can be dispersed into the epoxy resin in the form of small droplets with micron-level size, a phase separation state is formed, and the particle sedimentation problem is improved; meanwhile, the two polymers have similar refractive indexes, so that the prepared dimming film has good transparency. In addition, the size of the droplets in the dimming film is more conducive to the flipping of the dimming particles, so that the light transmittance is improved, and the performance of an SPD device is improved.

A method for manufacturing a honeycomb structure includes preparing a honeycomb formed body by extruding a green body comprising a ceramic raw material, a pore-forming material, a binder and a dispersion medium through a die that defines opening shapes of the plurality of cells; drying the honeycomb formed body to obtain a honeycomb dried body; and firing the honeycomb dried body to obtain a honeycomb fired body in which a thickness of the partition walls is 50 μm or more and 210 μm or less, and a porosity of the partition walls is 45% to 60%; wherein the pore-forming material contains crosslinked starch and an acrylic polymer, and the green body contains 1.0 parts by mass or more of crosslinked starch with the proviso that a P content is less than 0.2 parts by mass, with respect to 100 parts by mass of the ceramic raw material.

The application discloses a saline-alkali soil improvement method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps: in a screw extruder, humic acid and acrylic acid are grafted and polymerized in a reaction section to form humic acid grafted acrylic acid polymer; N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine, [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide and furfural residue are sequentially added at the opening of a conveying section, and after passing through a mixing section, the mixture is extruded and granulated to obtain a conditioner; according to weight parts, the furfural residue is 70-90 parts, the humic acid grafted acrylic acid polymer is 10-25 parts, and the N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine and [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide are 1-5 parts. The conditioner is applied to saline-alkali soil by being scattered in the soil during ploughing or being applied to the soil by hole planting during sowing, so that the organic matter content of the soil can be increased, the saline-alkali components can be separated from the roots of crops, the stress of the saline-alkali soil on the crops can be effectively reduced, and the yield of the crops can be improved.

This invention discloses a production process for sulfur dioxide-resistant electroplated aluminum and the resulting electroplated aluminum, relating to the field of electroplated aluminum. The production process for sulfur dioxide-resistant electroplated aluminum includes: coating a release coating onto a base film layer to obtain a release layer; coating an imaging coating onto the release layer to obtain a color layer; molding and aluminum plating the color layer to obtain an aluminum-plated layer; and coating the aluminum-plated layer with an adhesive to obtain electroplated aluminum. The imaging coating comprises the following raw materials in parts by weight: 80-100 parts of modified monomeric acrylic polymer, 7-10 parts of isocyanate curing agent, 3-6 parts of highly branched semi-crosslinked polyurethane prepolymer, 0.8-1.5 parts of dispersant, 0.2-0.5 parts of defoamer, 35-50 parts of methyl ethyl ketone (MEK), and 35-50 parts of pentamidine ketone (PHK). The highly branched semi-crosslinked polyurethane prepolymer has a molecular weight of 110,000-120,000 and a softening point temperature of 220-240°C. This application provides electroplated aluminum resistant to sulfur dioxide corrosion.

A composite separator for a lithium secondary battery according to one aspect of the present invention comprises an inorganic heat-resistant layer and an organic polymer adhesive layer sequentially provided on at least one surface of a porous organic polymer substrate, wherein organic binder polymer particles included in the organic polymer adhesive layer are a mixture of acrylic polymer particles and vinylidene fluoride-based polymer particles, the average particle diameter (D50) of the acrylic polymer particles is 2500nm or more larger than the average particle diameter (D50) of the vinylidene fluoride-based polymer particles, the average particle diameter (D50) of the acrylic polymer particles is 3000nm or more, the average particle diameter (D50) of the vinylidene fluoride-based polymer particles is 100nm to 500nm, and the weight ratio of the acrylic polymer particles to the vinylidene fluoride-based polymer particles is 3.5:6.5 to 4.5:5.5.

The invention discloses a repulping water-based bio-based high-barrier coating composition, a coating product as well as a preparation method and application of the coating product, and belongs to the technical field of green packaging materials. The composition is composed of a functional core-shell structure acrylic polymer, polyhydroxyalkanoate particles, an in-situ modified mineral and an intelligent cross-linking system. According to the invention, an organic and inorganic dual interpenetrating network sensitive to pH is innovatively constructed, so that the coating has excellent water resistance, oil resistance and gas barrier property in a use environment, and network swelling and dissociation can be rapidly generated under an alkaline recovery condition. Compared with a traditional technology depending on high mineral filling, according to the scheme, a better barrier effect can be achieved under the low filling amount by utilizing the synergistic enhancement effect of the trace intelligent cross-linking agent and the bio-based particles, meanwhile, the paper is endowed with high fiber recovery yield and excellent industrial and household compost degradation performance, and fluoride addition is completely avoided; the problem that the barrier property, the repulping property and the full biodegradability of paper-based packaging cannot be considered at the same time is effectively solved.

A silicone-acrylic adhesive is made from a combination of I) a first aqueous emulsion containing a soft acrylic polymer, II) a second aqueous emulsion containing a hard acrylic polymer, and III) an aqueous emulsion of a silicone resin. The silicone-acrylic binders can be used to prepare thermal insulation coating compositions that can be applied to metal (e.g., steel) substrates or primed substrates. A thermal barrier coating prepared by drying the thermal barrier coating composition provides corrosion resistance under thermal barrier to a metal or primed substrate.

Provided is a release coating agent for a polyester base material, which has excellent adhesion to the polyester base material and has heat peeling resistance. A release coating agent for a polyester substrate according to an embodiment includes an aqueous dispersion in which a polyurethane resin is dispersed in an aqueous dispersion medium. The aqueous dispersion contains a (meth) acrylic polymer that contains, as constituent components, a monofunctional alkyl (meth) acrylate having an alkyl group having 4-22 carbon atoms and a poly (meth) acrylate having 2-6 functional groups.

Described is a hydrogel having both an ion-conductive region based on an acrylic polymer and an electrically conductive region of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). In addition, described is a hydrogel to which poly(ethylene glycol) (PEG) or poly(ethylene glycol) methyl ether (PEGME) is added to improve the water resistance (or durability) of the hydrogel.

Provided is a medical adhesive comprising: a water-dispersible acrylic polymer obtained by polymerization of an alkyl (meth)acrylate; and an organic liquid component having a molecular weight of 1,500-7,000 and a hydrophobic ratio of 38-75%.

Compositions comprising starch-acrylic polymers combined with elemental iodine are disclosed. The SAP-I compositions release non-toxic amounts of iodophor iodine in a sustained, controlled manner. Methods of formation and use of the compositions along with methods of creation and use of devices incorporating the compositions in a variety of healthcare and non-healthcare settings are set forth in detail herein.

Disclosed in the present application are a separator and a preparation method therefor, a battery, and an electric device. The separator comprises a substrate and a coating, wherein the coating is formed on at least one side of the substrate, and comprises acrylic ester polymer particles, the acrylic polymer ester particles having an AFM adhesive force of 2-3 nN.

The present invention relates to a liquid composition for filament winding comprising a monomer, a (meth)acrylic polymer and at least an initiator. In particular the present invention relates to a liquid composition for filament winding comprising a monomer, a (meth)acrylic polymer and at least one initiator or two initiators that have a different half life time, its process of polymerization, a system for the process of polymerization and an object obtained. The present invention also relates to a process for manufacturing thermoplastic composites, mechanical parts or structural elements made of composite material and to mechanical parts or structural elements made of composite material obtained via the process using such a liquid composition. The thermoplastic composite is a hollow body, and more preferably an axisymmetric hollow body.

A composition for conditioning keratin fibres comprising: a) at least one spherical particle of lipophilic modified silica; b) at least one superabsorbent polymer selected from starches grafted with acrylic polymers; and c) at least one hyaluronic acid cross-linked polymer. A cosmetic process for conditioning keratin fibers comprising applying a composition to the keratin fibers.

A release film includes a release layer and a substrate layer, the release layer includes two or more polymers, and satisfies at least one of the following (1) to (4). (1) The release layer has a plurality of different regions with different component ratios, and in a case in which Raman spectroscopy is performed on the different regions, at least a part of the different regions exhibits different peak intensities. (2) A surface of the release layer has a convex portion and a concave portion, and in a case in which Raman spectroscopy is performed on the convex portion and the concave portion, at least a part of the convex portion and at least a part of the concave portion exhibits different peak intensities. (3) A difference in SP value between at least two of the polymers is 0.3 or more. (4) At least one of the polymers is a nitrile group-containing (meth)acrylic polymer.

Provided is an adhesive composition capable of forming an adhesive layer having high adhesiveness to an adherend after being cured.　A curable adhesive composition according to the present invention includes: an adhesive polymer; a polyfunctional cyclic ether compound having two or more cyclic ether groups per molecule; and an acid generator. The amount of the polyfunctional cyclic ether compound is 10-100 parts by mass relative to 100 parts by mass of the total amount of the adhesive polymer. The adhesive polymer preferably includes an acrylic polymer. The acrylic polymer preferably includes 0.5-10 mass% of a constituent unit derived from a carboxy group-containing monomer.

The invention discloses a composite artificial cavity / membrane tissue and a preparation method thereof. The composite artificial cavity / membrane tissue is formed by compounding a synthetic high-molecular material and a natural high-molecular biological material, and the synthetic high-molecular material is selected from more than one of silicone, synthetic high-molecular hydrogel and an acrylic polymer. The natural polymer biological material is selected from more than one of an acellular matrix scaffold material, a non-acellular matrix and non-acellular collagen. The composite artificial cavity / membrane tissue provided by the invention has the advantages of good healing after transplantation, high biomechanical strength, low immunogenicity, smooth surface and the like.

The invention relates to a preparation method of a silyl ether composition. The silyl ether composition is prepared from alkyl phenyl silicone oil, polyether, silicon dioxide, an acrylic polymer, a basic catalyst and other raw materials through a certain process. The silyl ether composition can be directly diluted with mineral oil and polyether to obtain a stable mixture which is used as a defoaming agent, and the problem that organic silicon is incompatible with polyether and mineral oil is solved.

The present invention is to address the problem of providing an electrically peelable adhesive product having excellent electrical peelability even under conditions where the adhesive product is exposed to high temperature conditions over a long period of time. The problem is solved by an electrically peelable adhesive composition comprising an acrylic polymer, an ionic liquid and an alkyl ether of a polyethylene glycol, wherein a content of the ionic liquid is more than 30 parts by weight and 90 parts by weight or less relative to 100 parts by weight of the acrylic polymer and a content of the alkyl ether of the polyethylene glycol is 5 parts by weight to 45 parts by weight relative to 100 parts by weight of the acrylic polymer.

Disclosed are products having a coating applied to at least a portion thereof. The products can be vehicle products, home or office appliances, furniture or tooling, power industry products, consumer electronics, construction products, or products protected by an intumescent coating. The coating can be derived from a waterborne coating composition or a powder coating composition and can include an acrylic polyester resin obtainable by grafting an acrylic polymer with a polyester material obtainable by polymerizing a polyacid component with a polyol component comprising 2,2,4,4-tetraalkylcyclobutane-1,3-diol. Also disclosed are methods of application and uses.

This invention relates to a fluorosilicone-modified acrylic resin and its preparation method, belonging to the field of polymer materials technology. The resin uses methyl methacrylate, butyl acrylate, and hydroxyethyl methacrylate as basic monomers. Fluorine is introduced through copolymerization with tridecafluorooctyl acrylate. A self-made doped silicone modifier is introduced via blending. The doped silicone modifier is modified by the ring-opening and ring-closing reaction of epichlorohydrin with the secondary amine structure of hexamethylcyclotrisilazane, grafting branched active epoxy groups. Subsequently, n-decylamine is used to open the ring with the grafted epoxy groups, introducing terminal long-chain alkyl modification. This modifier exhibits good compatibility with the acrylic polymer chain and acts as a support in the resin, reducing the shrinkage stress after curing and improving the impact resistance of the cured film. Simultaneously, the reduction in micro-shrinkage results in a film with higher gloss and fullness.

The present invention provides a printing sheet having a coating layer for receiving ink on at least one surface of a substrate, wherein the printing suitability is excellent, the antistatic property is good without easily causing paper jam and the like during printing, and the properties such as water resistance, weather resistance and the like are excellent, and particularly, a printing sheet having excellent adhesion / bonding of the substrate and the coating layer and a manufacturing method thereof. The printing sheet is a printing sheet having a coating layer on one or both surfaces of a substrate, wherein the coating layer is formed by incorporating clay in a proportion of 35 mass% or more and 65 mass% or less and heavy calcium carbonate in a proportion of 5 mass% or more and 30 mass% or less in a continuous phase composed of an acrylic polymer, and the volume average particle diameter of the heavy calcium carbonate is 0.05 μm or more and 2.00 μm or less.

The invention relates to the technical field of adhesives, in particular to an electric visbreaking adhesive composition, an adhesive and a product thereof. The electric visbreaking adhesive composition is prepared from the following components in parts by weight: 100 parts of an acrylic polymer, 2 to 15 parts of ionic liquid, 2 to 20 parts of an auxiliary agent and 0.1 to 5 parts of a cross-linking agent, wherein the total weight of monomer components in the acrylic polymer is 100 wt%, and the acrylic polymer contains 5-35 wt% of a nitrogen-containing monomer. In the electric visbreaking adhesive composition disclosed by the invention, a proper amount of nitrogen-containing monomer is introduced into the acrylic polymer, so that the compatibility of the acrylic polymer and the ionic liquid can be effectively improved, the ionic liquid is prevented from being separated out and participates in constructing an ionic migration channel, and the electric visbreaking effect is improved; the introduction of the auxiliary agent can promote the migration of the ionic liquid in a polymer network and improve the electric visbreaking response speed of the adhesive.

Provided is a developing roller for an electrophotographic device, the surface layer of which has low resistance and excellent wear resistance, and which also has excellent uniformity and an excellent image over a long period of time. A developing roller (10) for an electrophotographic device is provided with a shaft body (12), an elastomer layer (14) formed on the outer peripheral surface of the shaft body (12), and a surface layer (16) formed on the outer peripheral surface of the elastomer layer (14), the elastomer layer (14) being configured from a silicon base material containing silicone rubber, the surface layer (16) being configured from a crosslinked product containing a urethane prepolymer and a composition (C)-(E) described below, the urethane prepolymer comprises (A) an aromatic isocyanate, (B) a caprolactone-based polyol or a carbonate-based polyol, (C) carbon black, (D) a (meth) acrylic polymer containing a hydrophilic group and a silicone group in each molecule, and (E) isocyanurate, and the fracture stress of the surface layer (16) is 30 MPa or more, and the urethane prepolymer is formed from (A) an aromatic isocyanate, (B) a caprolactone-based polyol or a carbonate-based polyol, (C) carbon black, (D) a (meth) acrylic polymer containing a hydrophilic group and a silicone group in each molecule, and (E) an isocyanurate.

EMULSIONS CONTAINING BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE, A LIPOPHILIC ACRYLIC POLYMER, A FATTY ACID ESTER, AND AN ANIONIC SURFACTANT. This disclosure relates to compositions including 2,4-bis-{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, at least one lipophilic acrylic polymer, at least one C12-C24 fatty acid ester of a C2-C24 polyol, and at least one carboxylic anionic surfactant or carboxylate selected from the group consisting of amino acids modified with at least one C8-C30 hydrocarbon chain and their salts, as well as processes for the manufacture and use of such compositions. Figure for abstract: none