604 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.

The invention provides a high-temperature-resistant and high-humidity-resistant double-sided tape for bonding a PC (Polycarbonate) base material. The high-temperature-resistant and high-humidity-resistant double-sided tape has a four-layer structure, namely a first adhesive layer, a reinforced body layer, a second adhesive layer and a release protective layer in sequence. The two adhesive layers are acrylate pressure-sensitive adhesives and comprise an acrylate polymer solution, tackifying resin, a zeolite molecular sieve and a cross-linking agent. The key of the pressure-sensitive adhesive is an acrylate polymer solution formula, the rigidity of a molecular chain is enhanced by introducing methyl methacrylate and isobornyl methacrylate, and the high-temperature adhesive strength is ensured; meanwhile, the acid values of the hydroxyl / carboxyl-containing monomer and the tackifying resin are controlled to reduce hydrophilic groups and improve moisture resistance, and the zeolite molecular sieve is used for adsorbing gas released by the PC base material under high temperature and high humidity to prevent the gas from damaging a bonding interface. According to the scheme, the process is simple, the cost is controllable, and the problem that the bonding force of the PC base material is reduced due to gas release in a high-temperature and high-humidity environment is effectively solved.

The invention discloses an acrylic polymer grouting material and application of the acrylic polymer grouting material in prevention and treatment of surface layer pulverization of an earthen site in a humid environment, and belongs to the field of cultural relic restoration. Through the modification effect of a water-based polymer material with good diffusivity on the surfaces of ruins and the filling effect of pores, based on the shape of the excavated earthen ruins, the surface layer pulverization of the earthen ruins in the humid environment is prevented and controlled by adopting a stepped distribution micro drilling grouting technology and utilizing a polymer stepped grouting mode; the acrylic polymer liquid is diffused to a certain range of the surface layer of the earthen ruins to prevent internal water from seeping to the surface layer in summer and maintain certain humidity of the surface layer in other seasons, so that internal stress of the surface layer of the earthen ruins caused by water change is reduced, generation of surface layer cracks is reduced, and the pulverization resistance of the earthen ruins is enhanced; the purposes of reducing the permeability coefficient of the earthen ruins and improving the weather resistance of the surface layers of the earthen ruins are achieved.

The invention belongs to the technical field of polymer materials and binders, and discloses a polyurethane modified acrylic ceramic tile binder and a preparation method thereof. The polyurethane modified acrylic ceramic tile adhesive comprises a liquid material and a powder material, the liquid material comprises a silicone acrylic emulsion and an organic silicon modified polyurethane emulsion; the powder material comprises Portland cement, quartz sand and white carbon black. The organic silicon modified polyurethane emulsion is obtained by carrying out copolymerization reaction and emulsification on an alkoxy silane modified hydroxyl-terminated polybutadiene prepolymer, polyether glycol, micromolecular dihydric alcohol and diisocyanate in the presence of an organic tin catalyst. The organic silicon modified polyurethane emulsion contains an organic silane oxygen group capable of being hydrolyzed and cross-linked, and can be subjected to a hydrolysis cross-linking reaction with an organic silicon coupling monomer in a silicone acrylic emulsion, so that the compatibility of polyurethane and an acrylic polymer is improved, and the modification effect is improved.

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.

This invention provides a high-strength, impact-resistant acrylic adhesive. Using an independent synthesis method, an acrylate-modified rubber elastomer with carboxyl groups is prepared. This elastomer can be chemically bonded to an acrylic polymer. The resulting hydroxyl groups can further react with an isocyanate curing agent. Adhesion is enhanced by using an acrylic phosphate adhesion promoter and a multifunctional acrylate monomer to increase crosslinking density, enabling the foam tape prepared with this acrylic adhesive to maintain high bonding strength even at high temperatures. The foam tape prepared with this high-strength, impact-resistant acrylic adhesive exhibits a 180° peel strength of greater than 3200 gf / in at room temperature and greater than 800 gf / in at 85°C. It also exhibits a drop impact energy of greater than 0.65 J and a DuPont impact energy of greater than 0.90 J.

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 belongs to the technical field of novel environment-friendly printing and water-based packaging protection materials, and discloses high-wear-resistance degradable water-based plastic-replacing oil, a preparation method and application of the high-wear-resistance degradable water-based plastic-replacing oil. Water-based matte polyurethane, a water-based acrylic polymer and water-based bright polyurethane serve as core film-forming substances, and water-based matte polyurethane, water-based acrylic polymer and water-based bright polyurethane serve as core film-forming substances; degradable reinforcing agents such as nano-crystalline cellulose and functional auxiliaries are compounded, and a step-by-step dispersion technology is adopted for preparation. Through cooperation of the formula and the technology, the comprehensive performance that the A4 paper is resistant to abrasion for more than 3000 times, the natural biodegradation rate is more than 3000 times, the folding and explosion resistance is 30 times and the like can be achieved, complex chemical modification is not needed in the technology, the production period is remarkably shortened, a traditional BOPP film covering technology can be replaced, and the method is suitable for a high-speed printing and packaging production line and is suitable for protection of various paper packages such as digital electronics, cosmetics and tobacco and wine. The problems that a traditional BOPP covering film is difficult to degrade, wear resistance and degradation of existing water-based plastic replacing oil are difficult to consider, and quick drying conflicts with film forming are solved.

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 invention discloses an environment-friendly fluoride-free bio-based paper protective coating easy to recycle as well as preparation and application thereof, and belongs to the technical field of paper-based packaging materials. The composition is mainly prepared by compounding a polyhydroxyalkanoate emulsion and a water-based acrylic polymer with a specific acid value and glass transition temperature. According to the scheme, a unique pH response switch is constructed, and the contradiction that an existing bio-based coating is high in brittleness and water resistance and alkaline repulping are difficult to consider at the same time is effectively solved on the premise of not depending on wax and additionally adding a cross-linking agent or a high-content surfactant. Compared with a traditional multi-component or high-energy-consumption recovery scheme on the market, the method has the advantages that excellent oil-proof and barrier properties and efficient fiber recovery under mild conditions can be realized only by a simple binary system, the formula complexity and the recovery cost are remarkably reduced, and the method has excellent environmental protection benefits and industrial application values.

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.

Provided is a double-sided adhesive pressure-sensitive adhesive sheet that exhibits good shear properties when configured with a pressure-sensitive adhesive layer containing a water-dispersible acrylic polymer. A double-sided adhesive pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer is provided. The pressure-sensitive adhesive layer contains a water-dispersible acrylic polymer, a tackifying resin, and a water-soluble crosslinking agent. The pressure-sensitive adhesive layer has a thickness of 50 μm or less.

Disclosed is a method for manufacturing a toothpaste composition, the method comprising adding at least one humectant to a mixing vessel and at least one salt to a mixing vessel; applying an agitating action to the mixing vessel to create a humectant and salt mixture; adding an acrylic polymer and at least one thickening agent to the humectant and salt mixture in the mixing vessel; applying an agitating action to the mixing vessel to create a functionalized acrylic polymer, wherein the functionalized acrylic polymer is homogenous; and optionally adding to the functionalized acrylic polymer one or more additional components of the toothpaste composition.

Cosmetic cleansing composition comprising surfactants The present invention relates to a cosmetic composition comprising, in a cosmetically acceptable medium: an aqueous phase, at least one amphoteric surfactant chosen from betaines, at least one linear α-olefin sulfonate, at least one ethylene glycol ester, and at least one crosslinked anionic acrylic polymer. Figure for abstract: none

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.

COMPOSITION COMPRISING A NEUTRALIZED POLY(METH)ACRYLIC ACID POLYMER The present invention relates to a composition comprising: (a) at least one neutralized poly(meth)acrylic acid polymer; (b) at least one organic acid or salt thereof; and (c) water, wherein the amount of the neutralized poly(meth)acrylic acid polymer (a) is 0.5% by weight or more, relative to the total weight of the composition. The composition according to the present invention may exhibit a sorbet-like appearance and a textural transformation (from a gel / cream texture to a liquid texture) during application and an absence of a sticky sensation after application. Figure for abstract: none

The invention belongs to the technical field of disinfectants and discloses a high-level disinfectant and a preparation method thereof.The high-level disinfectant is prepared from, by mass, 0.1%-3% of phthalic dicarboxaldehyde, 0.2%-0.8% of chelating agent, 2%-5% of penetrating agent, 0.3%-2% of modified starch, 1%-2% of acrylic polymer, 0.1%-0.3% of single-chain quaternary ammonium salt, 0.1%-0.3% of double-chain quaternary ammonium salt, 0.4%-5% of corrosion inhibitor and the balance purified water. Modified starch and polyacrylic acid are fully dissolved in a high-temperature stage, molecular chains are fully expanded, more active sites are exposed, and then the temperature is gradually reduced, so that the molecular chains are orderly arranged, a compact and uniform network structure is formed, and effective release of bactericidal components is ensured. Meanwhile, the single-chain quaternary ammonium salt and the double-chain quaternary ammonium salt are complementary through membrane destruction and internal destruction respectively and have a synergistic effect with the o-phthalaldehyde, so that the sterilization effect is remarkably improved.

The invention relates to the technical field of copper-clad plate preparation, in particular to a method for detecting a prepreg glass yarn cavity, which comprises the following steps: preparing a prepreg sample; preparing a crystal glue solution, namely mixing 15-25 parts of an acrylic monomer, 5-10 parts of a solvent and 0.5-1 part of an accelerant, and pouring the mixture into a beaker; sequentially adding 40-60 parts of an acrylic polymer, 3-5 parts of a coupling agent, 0.1-0.5 part of a surface treating agent and 15-20 parts of transparent powder, fully mixing, and uniformly stirring by using a stirrer to obtain a crystal glue solution; glue filling is conducted on a prepreg sample through the crystal glue solution to manufacture a prepreg sample slice, after the slice is ground, the slice is observed through a microscope, and detection of the glass yarn cavity of the prepreg sample is completed. Through a special glue pouring method, the cavity condition can be observed in a prepreg state, the glass yarn cavity can be detected without pressing a copper-clad plate, and the time and the labor cost are saved.

To provide a pressure-sensitive adhesive tape which suppresses the surface contamination of an adherend with foreign matter and is excellent in antistatic performance.SOLUTION: An adhesive tape according to an embodiment of the present invention includes a base material; and an adhesive layer formed of an active energy ray-curable adhesive containing a (meth) acrylic polymer having a radiation-polymerizable carbon-carbon double bond, an ionic liquid, and a photopolymerization initiator.SELECTED DRAWING: Figure 1

To provide a laminate capable of suppressing occurrence of a crack in a dielectric multilayer film due to temperature changes, while also suppressing occurrence of an appearance defect.SOLUTION: A laminate 11 comprises a synthetic resin substrate 12, an acrylic polymer film 13 laminated on a back surface of the substrate 12, and a dielectric multilayer film 14 laminated on the acrylic polymer film 13.SELECTED DRAWING: Figure 1

The invention provides an adhesive composition and a laminate comprising the same, wherein the adhesive composition can easily achieve proper cohesive force and stress relaxation even if the solid content concentration is high. The adhesive composition of the present invention contains a (meth) acrylic polymer, and the structure of a cross-linked part after cross-linking in the (meth) acrylic polymer has an associative dynamic covalent bond. The laminate according to the present invention comprises a first member, a second member, and an adhesive layer that bonds the first member and the second member, and the adhesive layer is formed from the adhesive composition.

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 curing tape which exhibits high adhesiveness and excellent removability without depending on the touch of fingers. The curing tape is provided with a base material and an adhesive layer provided on the base material, the adhesive layer is formed from an adhesive composition containing a (meth) acrylic polymer and a crosslinking agent, and the adhesive layer has a probe adhesive area of 0.14-0.40 (inclusive) as measured under specific conditions.

Provided is an adhesive composition which exhibits sufficient adhesiveness when an adherend is joined, and which can be easily peeled off when the adherend is peeled off without contaminating the surface of the adherend. The adhesive composition contains an acrylic polymer (A), a photopolymerizable compound (B), and a polyolefin resin (C).