1577 results about "Acrylic acid" patented technology

The invention discloses a catalyst used for preparing acrylic acid and butyl ester by the dehydration of butyl lactate and a preparation method thereof. The catalyst is a composite catalyst, comprising a main catalyst A and auxiliary catalysts B, C, D and E, wherein, A is calcium sulphate, B is sulphuric acid, C is phosphate, D is alkaline matter and E is promoter. The preparation method comprises the steps as follows: five compositions A, B, C, D and E are sufficiently mixed, baked for 2-10 hours at the temperature of 200-800DEG C and formed for standby. The catalyst has high catalytic activation; under the catalysis of the catalyst, the molar yield reaches 75.1 percent and the molar selectivity of the acrylic acid and butyl ester reaches 71.5 percent. The preparation method has the advantages that the crystal structure of the main catalyst can be improved so as to be beneficial for carrying out the reaction; and the introduction of different auxiliary catalysts and quantities is helpful to improve the conversion ratio of the raw material and the product selectivity and is beneficial for improving the strength of the catalyst.

A pretreatment liquid is used for pretreating a medium on which an image is recorded using a water-based ink. The pretreatment liquid contains core-shell particles having a 2-ethylhexyl acrylate as a core and a benzyl methacrylate as a shell, polyester microparticles, a water-soluble organic solvent, and water. A mass ratio of the core-shell particles to the polyester microparticles is 0.3 or more and 3.0 or less.

The application relates to the technical field of refining of acyclic compounds, and discloses a gradient temperature control method for a n-butyl acrylate refining process, which comprises the following steps: adding a polymerization inhibitor component to a crude product, obtaining a light-removing material through preliminary rectification; adjusting the pressure of a heated area and introducing oxygen-containing micro-bubble flow to maintain the free radical quenching activity in the liquid phase boundary layer; and based on the current increment of a wiped film driving current, adjusting the shear strength in real time, physically destroying the fluid viscous structure to lock the liquid film thickness distribution, solving the bottleneck that the polymerization inhibition fails due to the dissolution oxygen resolution under an extremely low pressure environment, realizing deep coupling of chemical inhibition and phase change mass transfer through the synergy of physical disturbance generated by micro-bubble expansion and rupture and an in-situ compensation mechanism of oxygen molecules, eliminating the risk of coking on a heated surface from a bottom logic, and guaranteeing the chemical stability of a monomer recovery process.

This utility model relates to the field of topcoat production technology and discloses a raw material grinding device for the production of acrylic drying topcoat, including a support mechanism and a grinding mechanism. The grinding mechanism is disposed inside the support mechanism and includes a grinding output unit and a filtration and circulation unit. The grinding output unit is rotatably connected to the inside of the support mechanism, and the filtration and circulation unit is disposed inside the support mechanism. This raw material grinding device for the production of acrylic drying topcoat blows air into an air pipe through an air inlet pipe. Unqualified materials enter a return pipe through a discharge pipe, achieving rapid recovery and secondary grinding of unqualified raw materials, shortening the overall grinding time and improving production efficiency. A filter screen at the bottom of the discharge port can screen out pre-ground qualified materials, preventing large particles from mixing in. The filtration and circulation unit promptly recovers and re-grinds materials that do not meet standards, ensuring that the raw materials entering the next production process have uniform particle size and meet requirements.

The utility model relates to an anti -fatigue antiskid floor mat, including floor mat body, floor mat body includes upper surface layer and lower surface layer, the upper surface layer with the lower surface layer between foaming fills setting PU foaming layer, the lower surface layer is away from the upper surface layer one side surface is provided with antiskid structure, the antiskid structure includes the antiskid sheet of bonding agent and the lower surface layer sticking, the antiskid sheet from top to bottom includes the sticking layer, reinforcing layer and antiskid layer in proper order, the sticking layer with the antiskid layer all acrylic resin material is made, the sticking layer is in flat state and is pasted through the adhesive and is set in the surface of the lower surface layer away from the upper surface layer side, the cross section of antiskid layer is as a whole in whole wave -shaped, the reinforcing layer is pasted through the adhesive with the sticking layer and the antiskid layer sticking respectively. The utility model is better than ordinary anti -fatigue floor mat antiskid effect, and is easier to place and is favorable to cleaning and airing.

A photocurable composition is capable of forming a cured product that has good reliability in a high-temperature constant-humidity environment, especially good ion migration resistance in a temperature range of 100° C. or higher. The photocurable composition (Z) is obtained by adding an ion scavenger (Y) to a composition (X) containing a monofunctional acrylic monomer (A) and a multifunctional acrylic monomer (B), wherein the content of the monofunctional acrylic monomer (A) relative to 100 wt % of the composition (X) is from 40 wt % to 80 wt %, and the content of the multifunctional acrylic monomer (B) relative to 100 wt % of the composition (X) is from 10 wt % to 50 wt %. An inkjet ink composition contains the photocurable composition (Z); a cured product; and an electronic component.

The present application belongs to the technical field of polymer adhesive material, and particularly relates to a resin composition for bonding polyolefin material and a preparation method thereof. The present application is prepared by formula screening optimization, and the ratio of the storage modulus E'30 at 30 DEG C to the storage modulus E'130 at 130 DEG C is greater than 100. The polyurethane resin is used in combination with butadiene-styrene copolymer with butadiene content greater than 60% and butadiene-styrene-vinylpyridine copolymer, so that the adhesive with good fusion and good adhesion to polyethylene base material is obtained. The allyl silicon modified pyridine monomer, allyl silicon modified carbazole monomer and lauryl acrylate are polymerized, and the prepared acrylate polymer is used in combination with the polyurethane resin. The pyridine group, tertiary butyl group, carbazole group and silicon atom in the acrylate polymer and the dodecyl group in the lauryl acrylate are used to improve the adhesion strength to the polyolefin base material.

The present invention provides a thermosetting resin composition for electromagnetic wave shielding, a bulk molding compound, and a molded product thereof, which are excellent in fluidity, injection molding property, compression molding property, and in which a molded product excellent in electromagnetic wave shielding property can be obtained. The thermosetting resin composition for electromagnetic wave shielding is characterized by containing a thermosetting resin (A) containing an unsaturated polyester resin (a1) and a vinyl ester resin (a2), a low shrinkage agent (B), a thickening agent (C) containing acrylic resin particles (c1) and magnesium oxide (c2), a thermally conductive filler (D), and a reinforcing material (E).

This invention discloses an amphoteric petroleum drilling additive and its preparation method. First, furfuryl acrylate, alkenyl sulfonic acid, alkenyl acid, acrylamide, and methacryloyloxyethyltrimethylammonium chloride are polymerized to obtain an amphoteric copolymer. Then, a bismaleimide derivative is added to crosslink with the furan rings on the polymer side chains to obtain the amphoteric polymer. The amphoteric polymer obtained by this invention simultaneously exhibits unique temperature-responsive rheological properties and an anti-polyelectrolyte effect. At low temperatures, it is beneficial for cutter carryover and wellbore purification; at high temperatures, the crosslinked network dissociates, the molecular chains extend, enhancing inhibition and plugging capabilities, and possessing reversible plugging ability, reducing the difficulty of subsequent drilling and unblocking.

The present application relates to the technical field of hard alloy, in particular to a high wear-resistant and excellent anti-skid hard alloy stud and a preparation method thereof. In view of the early failure problem of the existing WC-Co stud caused by cobalt phase pool, uneven interface wetting and nail tip rounding under the alternating impact of ice-water-sand, the tungsten carbide powder is surface modified in dopamine-acrylic acid weak acid aerobic buffer solution, then five ethoxy tantalum and oxalic acid tantalum aqueous solution are introduced in sequence, the double tantalum precursor space preset structure is formed through coordination anchoring, aging and carboxyl adsorption, and then the structure is compounded with cobalt precursor and carbon black, and then the structure is pressed and sintered in sections, so that cobalt is preferentially limited in the interface area of tungsten carbide particles and a tantalum-rich carbide hardening layer is generated; the obtained stud can maintain high wear resistance while significantly inhibiting early rounding and micro-chipping, and has excellent grip stability on ice and wet road surface.

The present invention provides a catalyst for preparing (meth)acrylic acid and a method for preparing a catalyst for preparing (meth)acrylic acid.

This invention provides a weather-resistant metal protective coating and its preparation method. The weather-resistant metal protective coating comprises a modified epoxy resin, modified carbon nanotubes, a curing agent, an initiator, and a diluent. The modified epoxy resin is prepared by reacting epoxy resin sequentially with methyldodecyl dichlorosilane and hydroxyethyl methacrylate ethyl phosphate. The modified carbon nanotubes are prepared by reacting carboxylated carbon nanotubes with 3-(methacryloyloxy)propyltrimethoxysilane. The weather-resistant metal protective coating prepared by this invention exhibits excellent anti-corrosion, anti-aging, and mechanical properties.

An artificial stone and a method of making the artificial are disclosed. The artificial stone comprises: 6 to 16 wt.% acrylic thermoset resin; and 84 to 94% fused silica particles, wherein at least 40 wt.% of the fused silica particles are characterized by a particle size larger than 100 pm.

Provided is a light-curable composition that includes one or more monofunctional (meth)acrylate monomers with at least one monomer having a homopolymer glass transition temperature of from 0°C to 200°C; a crosslinker selected from multifunctional oligomeric (meth)acrylates, aliphatic urethane (meth)acrylates, aromatic urethane (meth)acrylates, polyester (meth)acrylates, and epoxy (meth)acrylates; one or more adhesion promoters selected from glycidyl (meth)acrylate, 2-hydroxyethyl(meth)acrylate acid phosphate, phosphonate ester-containing (meth)acrylic monomer, phosphate ester-containing (meth)acrylic monomer, silane, and (meth)acrylic acid; a photoinitiator; a flame retardant; and one or more fillers comprising hollow fillers, refractory fillers comprising kaolin, intumescent fillers, or mixtures thereof. The cured composition can function as an electrical insulator in battery assemblies, while protecting components from hot particles and gases in case of thermal runaway events.

The application belongs to the technical field of marine functional polymer antifouling materials, and discloses an acrylic metal salt resin containing silicone and a capsaicin derivative structure, a preparation method and application thereof. The acrylic metal salt resin, silicone and a compound containing the capsaicin derivative structure are combined, the viscosity of the resin is synergistically controlled by using various functional acrylate monomers, the hydrophobic silicone chain segment is effectively integrated with the capsaicin derivative structure which has antibacterial activity and hydrophilic properties, a novel acrylic metal salt resin containing silicone and the capsaicin derivative structure is prepared, the resin has multifunctional antifouling properties such as hydrophilic / hydrophobic regulation, enhanced antibacterial activity and self-polishing renewal, the raw materials are low in price, and the obtained product has excellent antibacterial performance and more than 6 months of real sea antifouling capacity.

An aqueous coating composition comprising an aminosiloxane ester copolymer, an acrylic or polyurethane polymer, a surfactant, and water. The aqueous coating composition can be prepared by mixing an aqueous emulsion comprising an aminosiloxane copolymer, a surfactant, and water with an aqueous organic binder or dispersion. The aqueous coating composition can be used for leather treatment. The aqueous coating composition can be applied to a leather substrate and dried to remove water, thereby providing a coating on the leather substrate having a low coefficient of friction.

The present application belongs to the technical field of cable material, and particularly relates to a resin composition, a cable insulation material, a cable and a preparation method. The resin composition comprises polyethylene, a crosslinking agent and a crosslinking aid. The crosslinking agent is selected from one or more of triallyl isocyanurate, trimethylolpropane trimethacrylate and trimethylolpropane triacrylate. The crosslinking aid is selected from one or more of triphenyl phosphite, dipropylene glycol diacrylate and tetraethylene glycol diacrylate. The cable insulation material made of the resin composition has a high irradiation crosslinking rate, which can significantly improve the irradiation processing speed of the subsequent cable and improve the cable output efficiency. In addition, the cable insulation material has good aging resistance, can meet the long service life requirement, saves the cable update cost and has good economic benefits.

A copolyester composition comprising a metal phosphinate flame retardant, an acrylic silicone impact modifier, and a silicate mineral, which provides high tensile and / or flexural modulus while maintaining thermal and impact properties and having improved flame retardant properties, a method for manufacturing the copolyester composition, and an article manufactured from the copolyester composition are provided.

This invention discloses a heavy metal-free water-based anti-rust primer, its preparation method, and its application, relating to the field of water-based metal anti-corrosion coatings. The primer comprises a modified acrylic copolymer emulsion, a modified zinc phosphate-aluminum tripolyphosphate composite pigment, a diatomaceous earth composite filler, and a lignin sulfonate-grafted polycarboxylic acid dispersant. The modified acrylic copolymer emulsion is prepared by copolymerizing four monomers and then modifying them with epoxy silane and amino silane. The modified zinc phosphate-aluminum tripolyphosphate composite pigment is prepared by rare earth lanthanum ion loading and synergistic modification with a dual coupling agent. The diatomaceous earth composite filler is prepared by high-temperature activation, composite with nano-silica, and silane modification. Through the synergistic effect of its components, this invention significantly improves the primer's adhesion, resistance to damp heat, high temperature, kitchen fumes, weak acid resistance in food, and resistance to alkaline media in the kitchen, making it suitable for corrosion protection of various metal components in kitchens and commercial kitchens.

This utility model relates to the field of acrylic coating processing technology, and provides an anti-flocculation device for acrylic coating processing, including a processing tank. A discharge pipe is fixedly connected to the bottom of the processing tank, and an anti-flocculation mechanism is installed on the top of the processing tank. The anti-flocculation mechanism includes a drive motor fixedly installed on the top of the processing tank. The output shaft of the drive motor is fixedly connected to a first rotating rod via a coupling. A first bevel gear is fixedly connected to one end of the first rotating rod, and a second bevel gear is movably connected to the outer wall of the first bevel gear. A second rotating rod is fixedly connected to the bottom of the second bevel gear. By starting the drive motor, this utility model can rotate the first bevel gear fixedly connected to one end of the first rotating rod, causing the second bevel gear to rotate, which in turn drives a first slitting blade and a second slitting blade fixedly connected to the outer wall of the second rotating rod to rotate simultaneously, thus facilitating the anti-flocculation treatment of the acrylic coating in the lower part of the processing tank.

This invention discloses a polyolefin composite material, its preparation method, and its application. The polyolefin composite material comprises the following components by weight: 88-112 parts polyolefin resin; 0.5-4 parts organic pigment yellow; 0.1-1.5 parts phthalocyanine green; and 1-15 parts dispersing agent. The dispersing agent comprises polar-group grafted olefin polymers and / or aromatic cyclic olefin copolymers. The polar groups in the polar-group grafted olefin polymers include one or more of the following: phosphate ester groups, phosphate groups, sulfonic acid groups, sulfonate groups, carboxylic acid groups, carboxylate groups, amino groups, quaternary ammonium salt groups, amide groups, acrylic acid groups, or maleic anhydride groups. This invention, by adding specific dispersing agents to a high-chroma polyolefin system, obtains a polyolefin composite material with high chroma and good precipitation performance.

Disclosed in the present invention are an acrylate emulsion for a polymer cement waterproof coating, a raw material composition thereof, a preparation method therefor, and a use thereof. The raw material composition comprises the following components in parts by weight: 3-4.5 parts of sodium dodecyl diphenyl ether disulfonate, 1.5-2.5 parts of acrylamide, 2-4 parts of fatty alcohol polyoxyethylene ether, 2-4 parts of polyethylene glycol dimethacrylate, 1-2 parts of acrylic acid, 0.5-1 part of titanium triisostearoylisopropoxide, 40-60 parts of acrylate, 0.5-1 part of sodium persulfate, 50-60 parts of deionized water, and 0.1-0.3 parts of a 10% sodium hydroxide solution. The acrylate emulsion prepared by the present invention has excellent performance and good dispersibility, and a polymer cement waterproof coating prepared by using the emulsion of the present invention has lower viscosity and better workability.

A method for forming an insulating film having through holes, the method comprising the steps of: coating a photosensitive resin composition onto a substrate and drying it to form a photosensitive layer; and exposing and developing the photosensitive layer to form an insulating film having through holes, the insulating film having a thickness of 15 μm or more, wherein the photosensitive resin composition contains maleimide resin, (meth)acrylic acid monomers and a photopolymerization initiator, the maleimide resin being a reactant of tetracarboxylic acid dianhydride (a1), amine (a2) and maleic anhydride (a3), the amine (a2) comprising dimer diamine, and the (meth)acrylic acid monomer comprising a difunctional (meth)acrylic acid monomer.

The application relates to the technical field of radiator surface treatment, in particular to an aluminum alloy radiator with a surface coated with heat dissipation paint and a preparation method thereof, wherein the heat dissipation paint comprises graphene composite paint and a protective coating; the graphene composite paint comprises the following components: 5-9 parts of water-based acrylic acid modified polyurethane dispersion, 2-6 parts of water-based acrylic acid emulsion, 30-40 parts of graphene oxide dispersion, 0.2-0.8 parts of wetting dispersant, 0.05-0.2 parts of defoaming agent, 0.05-0.3 parts of leveling agent and 3-7 parts of deionized water; and the protective coating comprises the following components: 10-20 parts of water-based acrylic acid modified polyurethane dispersion, 5-15 parts of water-based acrylic acid emulsion, 0.1-0.3 parts of alkyl glycoside, 0.5-1.0 parts of polyacrylamide, 0.2-0.6 parts of leveling agent and 4-8 parts of deionized water; the radiator has the advantages that the heat dissipation efficiency of the radiator can be improved, and the volume of the radiator is not obviously increased.