1084 results about "Acrylic polymer" patented technology

The specification relates to a wash-off label (100, 200) comprising a face (101, 301) and a pressure sensitive adhesive (102, 302) adjoined to the face, wherein the face (101, 301) comprises corona discharged filmic material and the pressure sensitive adhesive (102, 302) has a composition including at least one acrylic polymer comprising acrylic monomer(s) and / or non-acrylic comonomer(s) having a carbonyl group capable of undergoing a crosslinking reaction, amount of the acrylic monomer(s) and / or non-acrylic comonomer(s) having a carbonyl group capable of undergoing a crosslinking reaction being from 0.1 to 5 wt. % of monomer composition, and a crosslinking agent with dihydrazide functionality, amount of the crosslinking agent being from 20 to 150% with respect to the amount of the carbonyl groups capable of undergoing a crosslinking reaction. The wash-off label (100, 200) is detachable from a surface when exposed to an alkaline washing solution at a temperature of 85 degrees C. the detachability being such that the pressure sensitive adhesive (102, 302) remains attached to the face (101, 301). Further, the specification relates to a labelled item and use of the wash-off label for labelling an item. Still further, the specification relates to a label laminate web and a method of manufacturing the wash-off label as well as to a pressure sensitive adhesive composition for a wash-off label.

The invention relates to the technical field of chlorinated polyvinyl chloride plastics, in particular to a PVC corrosion-resistant cable protection pipe and a preparation process thereof. The invention aims to solve the problem that the mechanical property and the corrosion resistance of the existing PVC cable protection pipe cannot be considered at the same time. Chlorinated polyvinyl chloride and polyvinyl chloride are subjected to hot mixing to obtain matrix resin, and the corrosion-resistant additive, the composite flame retardant, the flexibilizer and other additives are added to obtain the cable protection tube. The corrosion-resistant additive is obtained by grafting and modifying nano silicon dioxide with epoxy resin and premixing with an ethylene-vinyl alcohol copolymer; the composite flame retardant comprises core layers of nitrogen series, phosphorus series and inorganic hydroxides and a shell layer of an acrylate polymer, and is obtained through a core-shell reaction; the cable protection pipe is prepared through a multi-step mixing process; by introducing the core-shell structure and the corrosion-resistant auxiliary agent, efficient flame retardance and corrosion resistance are achieved, stress is buffered through the flexible shell layer, and the mechanical property of the material is maintained.

The preparation method of the high-temperature-resistant diaphragm for the lithium battery comprises the following steps: uniformly mixing water, a dispersing agent and an inorganic ceramic material in a mass ratio of (65-75): (0.5-0.8): (35-25), stirring and grinding to obtain a mixed solution; a modified acrylic polymer binder, a polyacrylamide polymer binder, a wetting agent and the mixed solution are mixed to be uniform, high-heat-resistance coating slurry is obtained, and the mass ratio of the modified acrylic polymer binder to the polyacrylamide polymer binder to the wetting agent to the inorganic ceramic material is (1.5-2.5): (1.5-2.5): (0.03-0.06): 100; and coating two opposite surfaces or any one surface of a polyolefin base membrane with the high-heat-resistance coating slurry to form a coating on the corresponding surface of the polyolefin base membrane, and drying to obtain the high-temperature-resistant diaphragm for the lithium battery.

To provide: an adhesive composition which has excellent low viscosity when adjusted to a predetermined non-volatile content, and which, when used in an adhesive sheet, exhibits excellent releasability and is less likely to cause lifting or peeling from an adherend even after exposure to a high-temperature environment or a high-temperature and high-humidity environment; and an adhesive sheet employing the same.SOLUTION: An adhesive composition comprises an acrylic polymer (A) and a curing agent (B). The acrylic polymer (A) is a copolymer of a monomer mixture containing respective specific amounts of specific monomers (a1) and (a2). The amount of the curing agent (B) added is 0.01-5 pts.mass based on 100 pts.mass of the acrylic polymer (A). The gel fraction of an adhesive layer composed of the adhesive composition is 55-90%.SELECTED DRAWING: Figure 1

The invention relates to the technical field of debondable adhesives, in particular to an electrically debondable adhesive and a preparation method thereof. The electrode material comprises an acrylate polymer, a conductive filler, a plasticizer, an antistatic agent, a curing agent, a modified electrode material and an auxiliary agent, the modified electrode material is prepared by modifying a basic electrode material through a modifier, is used for improving the electrolysis speed of the electrically debondable adhesive, and interacts with the acrylic polymer to improve the bonding performance. By introducing the modified electrode material, the adhesive can quickly respond and realize quick debonding after a specific voltage is applied; the cost and the difficulty of disassembling and replacing elements can be greatly reduced, meanwhile, damage to the elements is avoided, and the maintenance efficiency and the reliability of the electronic equipment are improved. The adhesive disclosed by the invention can still keep good adhesive performance and conductivity after being used for a long time, and the service life of a product is prolonged.

The invention discloses a lignin-monofluoroacrylic polymer high-voltage lithium ion binder as well as preparation and application thereof. The binder is prepared from lignin, polyfluoroacrylic acid and copolymer thereof through esterification reaction. The preparation method comprises the following steps: firstly, preparing a monofluoroacrylic polymer through free radical polymerization, and then grafting lignin into a side chain of the monofluoroacrylic polymer by utilizing esterification reaction to form a three-dimensional network structure; the binder has the free radical scavenging capacity of lignin, and the characteristics of chelating transition metal ions and stabilizing a CEI interface of polymonofluoroacrylic acid. Compared with a commercial PVDF (Polyvinylidene Fluoride) binder, the binder material disclosed by the invention has the advantages that the adhesive force is improved by 5.6 times, and the voltage resistance reaches 4.93 V which is obviously higher than that of PVDF (4.58 V). Therefore, the binder can be used for preparing the positive electrode of the high-voltage lithium ion battery, and has remarkable performance advantages.

The invention discloses an exposed polymer cement waterproof coating with a permeable crystallization function and a preparation method thereof. The waterproof coating comprises a component A and a component B, the component A comprises acrylic polymer emulsion, fluorocarbon emulsion, methyl silicic acid, soluble inorganic silicate and other auxiliaries; and the component B comprises cement, a filler, a geopolymer, a nanoscale silicon-containing compound, cellulose ether and an optional pigment. The waterproof coating disclosed by the invention has the functions of repairing structural cracks by permeable crystallization in the structure and enhancing the waterproof function of the structure; the high-elasticity and high-strength coating film outside the structure has an external waterproof effect, and the structure is protected; and meanwhile, the comprehensive long-acting waterproof effect is achieved through the self-repairing function when the coating film is broken. The LED lamp has exposure performance, and is particularly suitable for maintenance engineering needing to be exposed and repaired.

A separator for a secondary battery comprising a porous polymer substrate; a first layer on at least one surface of the porous polymer substrate, wherein the first layer includes inorganic particles and a nonparticulate acrylic polymer having a glass transition temperature of 15° C. or less, wherein the nonparticulate acrylic polymer connects and fixes the inorganic particles; and a second layer on an upper surface of the first layer, wherein the second layer includes a particulate acrylic polymer having a glass transition temperature of 20°° C. to 50° C. The separator for a secondary battery has good adhesion with the electrode and can solve the resistance problem in the presence of the inorganic particles.

The present invention provides: an adhesive composition capable of forming an adhesive layer that has particularly excellent adhesive characteristics when voltage is not applied thereto, exhibits a sufficient reduction in adhesive force when voltage is applied thereto, and has excellent impact resistance; an adhesive sheet provided with an adhesive layer formed from the adhesive composition; and a bonded body of the adhesive sheet and an adherend. The present invention relates to an adhesive composition containing an emulsion-type acrylic polymer (A) and an electrolyte (B), wherein the emulsion-type acrylic polymer (A) contains a monomer unit derived from a cyano group–containing monomer.

In order to solve the problems that an existing acrylic polymer barrier coating for a paper-based material is insufficient in mechanical strength and prone to breeding bacteria, the invention provides a barrier coating composition for the paper-based material, a barrier coating and a paper base material. The barrier coating composition for the paper-based material comprises the following components: a water-based acrylic prepolymer, chitosan grafted polyvinyl alcohol, an inorganic filler, microcrystalline cellulose, water-based polyurethane, a polysiloxane grafted acrylic monomer, an epoxy group-containing acrylic monomer, 1, 4-butanediol diacrylate and a solvent. The barrier coating composition for the paper-based material provided by the invention has excellent water vapor barrier property and grease barrier property, and more importantly, the barrier coating composition for the paper-based material provided by the invention has relatively good antibacterial property on the premise of having excellent mechanical property, so that the barrier coating composition for the paper-based material provided by the invention can be used as a barrier coating for the paper-based material. The method is suitable for various food paper-based packaging products such as disposable paper cups, paper bowls and food boxes, and the food safety performance of the food paper-based packaging products is improved.

To provide a coated fertilizer having a hydrophilic surface.SOLUTION: A coated fertilizer comprises: a granular fertilizer core; a first coated layer that is formed on a surface of the granular fertilizer core and is composed of a first coating composition including an acrylic polymer; and a second coated layer that is formed on the first coated layer and is composed of a second coating composition including an acrylic polymer, fine silicon powder, polymer sponge powder, and a hydrophilic substance. A silica particle layer is provided on a surface of the fine silicon powder.SELECTED DRAWING: Figure 1

Described herein is a coating composition suitable for application to a panel. The coating composition exhibits stability upon exposure to various temperatures, such as temperatures which induce freezing and thawing. The coating composition comprises calcium carbonate; titanium dioxide; opacity pigment composite comprising TiO2 encapsulated within a precipitated calcium carbonate shell; calcined diatomaceous earth; calcium chloride, aluminum hydroxide; and vinyl acrylic polymer. Described herein are also building panels coated with the coating composition and methods of their formation.

The invention discloses a four-layer composite co-extrusion synthetic resin tile and a preparation method thereof, and relates to the field of resin tiles. A four-layer composite co-extrusion synthetic resin tile is characterized in that four material layers are co-extruded and thermally sealed into a whole, and the four material layers comprise a weather-proof surface layer, a first framework layer, a sound insulation and heat insulation layer and a second framework layer which are sequentially arranged from top to bottom; the sound insulation and heat insulation layer comprises the following raw materials in parts by weight: 90-100 parts of first PVC resin; 6-12 parts of a foaming agent; 1-2 parts of a lubricant; 1-3 parts of a heat stabilizer; 5-9 parts of a plasticizer; 10 to 20 parts of modified wood powder; the surface of the modified wood powder is coated with an acrylate polymer. The synthetic resin tile prepared by the invention has relatively strong sound insulation and heat insulation effects and cold shock resistance.

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 relates to the technical field of basement membrane emulsions, in particular to a basement membrane emulsion with an aldehyde removal function and a preparation method thereof.According to the basement membrane emulsion with the aldehyde removal function, an anionic emulsifier and a nonionic emulsifier are used in cooperation, the stability of emulsion particles can be improved, the used emulsifier can form a thick hydration layer, and the stability of the emulsion particles is improved; a good effect is achieved on the stability of latex particles; secondly, monomers, namely self-made adipic dihydrazide and self-made 3-hydroxybutenoic acid-2-ethylene methacrylate, capable of removing formaldehyde are compounded and then grafted to an acrylate polymer chain, so that the basic performance of the original emulsion is not influenced while functional groups for absorbing formaldehyde are retained; on the basis of improving the formaldehyde removal capability of the base film emulsion, the stability and durability of the self-made adipic dihydrazide and the self-made 3-hydroxybutenoic acid-2-ethylene methacrylate monomer can be improved, so that the base film emulsion can continuously play a role in removing formaldehyde in practical application.

The invention discloses a water-based acrylic polymer as well as a preparation method and application thereof. The water-based acrylic polymer is prepared by copolymerizing the following monomers in percentage by mass: 35-80% of acrylic acid; 10%-58% of an acrylic acid compound containing a monohydroxyl group; and 2%-10% of an acrylic acid compound containing polyhydroxy. The preparation method of the water-based acrylic polymer comprises the following steps: adding a nitrogen-containing compound aqueous solution into acrylic acid to carry out neutralization reaction until the pH value of the obtained solution is 6-8, and then adding a monohydroxyl-containing acrylic compound, a polyhydroxyl-containing acrylic compound and an initiator to carry out copolymerization reaction to obtain the water-based acrylic polymer. The water-based acrylic polymer is obtained. The acrylic acid binder prepared from the water-based acrylic acid polymer is high in flexibility and good in cohesiveness and can well adapt to high volume expansion of a silicon-based negative electrode when being used as the binder, and a lithium ion battery obtained through final assembly is excellent in cycle performance.

The invention relates to an open-air coal yard dynamic dust raising inhibitor and a preparation method and a preparation device thereof, and the inhibitor comprises the following components in percentage by weight: 3-5% of pulverized coal, 5-10% of starch grafted acrylic polymer, 5-10% of lauryl sodium sulfate, 5-10% of acrylamide, 5-10% of modified starch and the balance of water. 1-2% of a starch grafted acrylic polymer; 0.03 to 0.05 percent of lauryl sodium sulfate, 0.1 to 0.5 percent of acrylamide and 1 to 2 percent of modified starch; sodium dodecyl sulfate is chemically pure, and the inhibitor has the following advantages that 1, the inhibitor has good wettability and permeability, and can rapidly permeate into coal, effectively fix dust on the surface of sandy soil, reduce wind erosion and form a hard consolidation layer, so that the purpose of controlling and improving the sand damage environment is achieved; 2, the inhibitor has flexible coagulation property, and the inhibitor can cover the surface of dust, so that fine dust particles are coagulated into larger particles; and 3, the dust remover has certain viscosity and can effectively adsorb dust particles and reduce flying of the dust particles. And 4, manufacturing and spraying of the inhibitor are automatically controlled by the inhibitor preparation device, and the efficiency is high.

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 provides a fire-resistant low-voltage wire cable and a preparation method thereof, and belongs to the technical field of wire cables, the fire-resistant low-voltage wire cable comprises an internal cable core bundle and an outer sheath, the outer sheath is prepared from the following raw materials: a resin matrix, a composite flame retardant, a reinforcing filler and an anti-aging agent, the reinforcing filler is a glass fiber composite porous organic framework, the organic framework material is pretreated by an acrylic polymer, and the composite flame retardant is prepared by taking expanded graphite as a shell of a flame-retardant material and then performing hydroxylation modification by using a silicon source material. The preparation process is simple and suitable for industrial production, the prepared electric wire and cable outer sheath is good in environment friendliness, and through the combined action of the composite flame retardant and the reinforcing filler, the prepared outer sheath material has excellent fire resistance and flame retardance while keeping high mechanical strength.

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.

The invention relates to the technical field of pellet adhesives, in particular to a mineral powder cold-pressed pellet adhesive and a preparation method thereof. The preparation raw materials comprise 8-16% of humic acid, 3-8% of an acrylic polymer, 10-25% of lignin, 2-6% of pentosan, 30-45% of kaolin, 2-6% of dispersible latex powder and 5-10% of aluminum oxide. The kaolin adopts high-molecular-weight kaolin as a filler, so that a stronger bonding network can be formed, and the bonding strength and durability of the adhesive are remarkably improved; and the dispersible latex powder is uniformly mixed with other materials due to the dispersity of the dispersible latex powder, so that the defect of agglomeration caused by poor dispersity due to the adoption of high-molecular kaolin is overcome. The proportion of humic acid and lignin is smaller than that of inorganic materials such as kaolin, so that the influence of carbonization of humic acid and lignin on the mechanical properties of pellets can be weakened. And the acrylic polymer and the latex powder in the ingredients cooperate with each other, so that the problem that the viscosity of the adhesive is reduced due to the reduction of the proportions of the humic acid and the lignin is well solved.

The preparation method comprises the following steps: uniformly mixing 21-30 parts by mass of a polyvinyl alcohol aqueous solution, 42-54 parts by mass of a silicone acrylic polymer emulsion and 10-18 parts by mass of calcium sulfate whiskers, and carrying out spray drying to obtain the rod-like hydrophobic material. When the rod-like hydrophobic material is applied to mortar, after the polyvinyl alcohol film is dissolved in water, the silicone-acrylic polymer particles gather along the surfaces of the calcium sulfate whiskers to form a hydrophobic film. The invention also discloses waterproof mortar and a preparation method thereof. The waterproof mortar is prepared from the following components in parts by mass: 32 to 45 parts of cement, 6 to 16 parts of rod-like hydrophobic substance, 40 to 50 parts of aggregate, 1.0 to 2.6 parts of rod-like early strength agent slow-release substance, 0.2 to 1.0 part of retarder and 0.1 to 0.2 part of cellulose ether. According to the invention, the rod-like hydrophobic substance and the rod-like early strength agent slow-release substance are introduced into a waterproof mortar system to achieve the purposes of water resistance, quick drying, improvement of flexural and compressive strength and improvement of construction efficiency.

The invention discloses an acrylic polymer emulsion film-forming agent, which is prepared from the following raw materials in parts by weight: 70 to 80 parts of pre-emulsion I, 40 to 60 parts of pre-emulsion II, 60 to 70 parts of emulsifier solution, 5 to 10 parts of initiation solution I and 10 to 15 parts of initiation solution II. The trifunctional ethoxylated trimethylolpropane triacrylate and the hard monomer are used as crosslinking monomers to form a network structure prepolymer I with relatively high crosslinking density, so that the film-forming property of the seed coating agent can be improved. And the acrylate monomer containing the tertiary carbon structure and the soft monomer can form a linear prepolymer II, and in an alkaline environment, ester groups can be protected, the hydrolysis rate can be reduced, and the alkali resistance can be improved. The film-forming property and alkali resistance of the polymer are further improved, so that the polymer can still stably exist in water-rich and alkaline soil, and active ingredients are slowly released for seeds to use. And the prepared seeds are not adhered and clustered after being coated, so that large-scale seeding is facilitated.

The invention discloses an explosion-proof membrane capable of being quickly shaped and a preparation method of the explosion-proof membrane. The explosion-proof membrane comprises a base material layer, an energy dissipation layer, a self-healing layer and a self-adhesive layer which are sequentially compounded, the base material layer is a high-transmittance polyester base material with shape memory performance; the energy dissipation layer is located on the outer side of the base material layer and is of a gradient modulus structure. The self-healing layer is located on the outer side of the energy dissipation layer, and the self-healing layer is a low-modulus acrylate polymer matrix; the self-adhesive layer is located on the inner side of the base material layer. According to the method, the site construction period is shortened from the hour level to the minute level, the adaptability to the hyperboloid car window or dome daylighting roof complex special-shaped base is improved, and rapid shaping is achieved.

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 dispersion comprising core-shell-type fluorine-based resin particles having improved flowability and cohesion properties. Specifically, provided are particles, a mixture or slurry (dispersion) comprising same, and a preparation method therefor, the particles each having an acryl monomer added to a perfluorinated polymer particle dispersion so as to have a perfluorinated polymer core and an acrylic polymer shell.

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.

Provided is a pressure-sensitive adhesive sheet having excellent adherability to a flexible member, especially a polyimide, and also having excellent flexibility.　Specifically provided is a pressure-sensitive adhesive sheet formed from a pressure-sensitive adhesive agent composition containing an acrylic polymer (A), a radical polymerizable compound (B), and a photopolymerization initiation agent (C), wherein the photopolymerization initiation agent (C) includes a hydrogen abstraction-type photopolymerization initiation agent (C1) and an α-aminoalkylphenone cleavage-type photopolymerization initiation agent (C2).

The present invention has an object of obtaining an electrically peelable adhesive product that is strong in adhesibility when used, is excellent in peelability even though a low voltage is applied, and does not leave much adhesive deposit after being peeled. The present invention achieves the above object by virtue of an electrically peelable adhesive composition contained in the adhesive product, the adhesive composition comprising an acrylic polymer, an ionic liquid having an ionic conductivity of 10−4 S / cm or more to 10−2 S / cm or less, and an alkyl ether of a polyethylene glycol, and containing 5 parts by weight or more to 30 parts by weight or less of the ionic liquid and of the alkyl ether of the polyethylene glycol with respect to 100 parts by weight of the acrylic polymer.