66 results about "Polymethacrylic Acids" patented technology

The invention provides an anti-cancer medicine and food homologous composition and a preparation method thereof. The composition is prepared from the following components in parts by weight: 5 to 10 parts of lipoic acid, 30 to 50 parts of nano curcumin, 2 to 7 parts of berberine, 50 to 100 parts of beta-glucan, 15 to 35 parts of polymethylacrylic acid, 15 to 25 parts of herba hedyotidis diffusae extract, 7 to 15 parts of scutellaria barbata baicalein, 25 to 55 parts of astragalus polysaccharide, 8 to 18 parts of coix seed ester and 10 to 15 parts of cordyceps cicadae. Through a space-time targeting synergistic release mechanism of a bionic nanocellulose skeleton and in combination with pH / enzyme double-response intelligent regulation and control, three-stage precise synergistic effects of oxidation resistance, apoptosis promotion and immune activation are realized, the limitation that a traditional medicinal and edible composition is poor in targeting property, low in synergistic efficiency and uncontrollable in toxicity is broken through, and the medicinal and edible composition has a broad application prospect. High-efficiency and low-toxicity tumor multi-channel synergistic intervention is achieved in a natural component system for the first time, and the actual effect of the whole medicinal and edible composition on cancer and swelling resistance is improved.

A method for preparing an exhaust gas purifying catalytic device, comprising: providing a catalytic promoter loaded with a precious metal, and providing an oxide carrier; pulping together the oxide carrier, the catalytic promoter loaded with the precious metal, a binder, a functional regulator and water, to obtain a catalyst slurry; placing the catalyst slurry on a ceramic carrier, and obtaining an exhaust gas purifying catalytic device after the catalyst slurry is dried. The functional regulator comprises at least one of polyhydroxyethyl acrylate and polyhydroxyethyl methacrylate.

The application belongs to the technical field of sodium ion batteries, and particularly relates to a binder composition, a sodium ion battery positive electrode slurry and a sodium ion battery. The binder composition comprises 0.5-100% and 0-99.5% of a first binder and a second binder by mass percentage, the first binder is one or more of polyacrylic acid, polymethacrylic acid, poly-methyl-vinyl-ether-copoly-maleic acid, and the second binder is one or more of polyvinylidene fluoride, polyacrylonitrile-based binder, polyurethane-based binder and polyimide-based binder. A high-molecular polymer containing a carboxyl group (-COOH) is used as a binder composition component to prepare the sodium ion battery positive electrode slurry. The carboxyl group can be neutralized with alkaline substances in the positive active material of the sodium ion battery positive electrode slurry, so as to ensure the uniformity and fluidity of the positive electrode slurry, to obtain a uniform sodium ion battery positive electrode sheet, and to obtain a sodium ion battery with good electrochemical stability.

The invention belongs to the technical field of ceramic material preparation, and provides an aluminum oxide granulation powder composition and an aluminum oxide granulation powder preparation method, the aluminum oxide granulation powder composition comprises the following components by weight: 0.1-1 part of a dispersant; 100 parts of alumina powder; 5 to 10 parts of a binder; 0.3 to 1 part of a thickening agent; 0.1 to 0.5 part of a lubricant; the binder is selected from at least one of polyacrylic resin or polymethylacrylic acid resin, and the dispersing agent is ammonium polyacrylate.

The present application relates to fluorescent nanoparticles based on fluorinated zwitterionic random copolymer and its preparation method and application, the fluorescent nanoparticles include the single chain nanoparticles formed by poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine, the molecular chain end of the poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine is connected with ACQ type group selected from anthryl, perylene imide group and pyrene base or AIE type group selected from tetraphenyl ethylene base, carbazole base and cyanine-containing triphenyl ethylene group.The fluorescent nanoparticles based on the poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine of the present application that terminal fluorescent group is terminated, has excellent controllable fluorescent luminescence performance.It is considered that the single chain nanoparticles have isolation effect, avoid the fluorescence quenching effect of ACQ type group, and can provide limited microenvironment for AIE type group, ensure the fluorescent luminescence performance of nanoparticles.

The invention relates to the technical field of hemostatic materials, and provides chitosan-based in-situ self-gel powder as well as a preparation method and application thereof. The chitosan-based in-situ self-gel powder provided by the invention comprises modified chitosan-based powder and oxidized polysaccharide powder, the modified chitosan-based powder is prepared from poly (3-sulfopropyl methacrylate potassium salt) grafted chitosan and poly [2-(methylacryloyloxy)-ethyltrimethyl ammonium chloride] grafted chitosan. The chitosan-based in-situ self-gelling powder provided by the invention has an in-situ self-gelling function, can quickly absorb water to realize self-gelling under the triggering of body fluid or blood, has excellent wet tissue adhesion performance, is high in water absorption speed and good in hemostatic effect, is not influenced by a normal blood coagulation mechanism in a hemostatic process, and has good postoperative anti-adhesion performance; no chemical cross-linking agent is used in the preparation process of the chitosan-based in-situ self-gel powder, the chitosan-based in-situ self-gel powder has good biocompatibility and biodegradability, raw materials are easy to obtain, synthesis is simple, and the chitosan-based in-situ self-gel powder is economical and safe.

This invention relates to the field of polylactic acid (PLLA) technology, specifically to a PSMA / PDLA-modified PLLA composite film and its preparation method. The PSMA / PDLA-modified PLLA composite film of this invention comprises a blend of L-polylactic acid (LMA) and a melt blend of octadecyl methacrylate (OMA) and D-polylactic acid (DMA). The OMA / DMA melt blend is obtained by melt blending OMA, DMA, and an initiator. By introducing the OMA / DMA blend, the SMA homopolymer forms a microphase-separated structure with PLLA. The SMA homopolymer forms a soft phase region, improving the toughness of PLLA. Simultaneously, the stereocomplex formed by the PDLA and PLLA molecular chains "anchors" the PLLA matrix to the soft phase of the SMA homopolymer, thereby improving mechanical properties.

This invention belongs to the field of casting binder technology, and particularly relates to an environmentally friendly water glass casting binder with anti-aging function. The raw material composition of this invention includes: sodium water glass, lithium water glass, polymethyl methacrylate, and lithium carbonate, which enables: 1. Polymethyl methacrylate combined with lithium carbonate to provide more hydrogen bonds to the water glass binder system, changing the surface potential energy and solvation ability of the water glass, improving the stability of the water glass, and thus obtaining better "anti-aging" ability; 2. Lithium carbonate itself has the effect of a dispersant, and combined with water glass at a specific modulus, it can further improve the dispersibility of the sand mold; 3. Polymethyl methacrylate itself has basic bonding strength, and by limiting the modulus of the water glass, it can also appropriately improve the bonding strength of the entire binder; 4. The amount of organic polymethyl methacrylate added to this binder is sufficiently small, ensuring that the binder has sufficient safety and environmental protection advantages.

The present invention addresses the problem of providing an anaerobic adhesive composition for an electromagnetic steel sheet, said anaerobic adhesive composition having excellent peel strength and more particularly excellent cohesion disruption resistance. [Solution] An anaerobic adhesive composition for an electromagnetic steel sheet, characterized by comprising: 100 parts by weight of a polymerizable (meth) acrylic monomer (A) containing (a-1) a hydroxyalkyl (meth) acrylate and (a-2) a (meth) acrylic acid as main components; 1 part by weight to 15 parts by weight; 0.01 to 10 parts by weight of a hardening accelerator (C); and 0.1-30 parts by weight of a poly (meth) alkyl acrylate (D).

A mixture contains at least one amino-regulated polyether block amide (PEBA) and at least one poly(meth)acrylate selected from poly(meth)acrylimides, polyalkyl(meth)acrylates, and mixtures thereof. The mass ratio of PEBA to poly(meth)acrylate is 95:5 to 60:40. The polyalkyl(meth)acrylate contains 80% by weight to 99% by weight of methyl methacrylate (MMA) units and 1% by weight to 20% by weight of C1-C10-alkyl acrylate units, based on the total weight of polyalkyl(meth)acrylate. The mixture can be processed to give foamed mouldings. The mouldings can be used in footwear soles, stud material, insulation or insulating material, damping components, lightweight components, or in a sandwich structure.

The invention discloses a dispersing agent and a preparation method thereof as well as negative electrode slurry and application thereof, and relates to the technical field of dispersing agents. The dispersing agent disclosed by the invention is prepared from the following components: a styrene-N-vinyl pyrrolidone-vinylamine segmented copolymer and poly (methacrylic acid polyethylene glycol ester) laurate; the mass ratio of the styrene-N-vinyl pyrrolidone vinyl amine segmented copolymer to the poly (methacrylic acid polyethylene glycol ester) laurate is (3 to 6): 1. The steric hindrance effect of the styrene-N-vinyl pyrrolidone-vinylamine block copolymer and the dynamic wettability of the poly (methacrylic acid polyethylene glycol ester) laurate cooperate with each other, the dispersing and wetting effects are achieved at the same time, the dispersing performance is remarkably improved, and the obtained dispersing agent is suitable for being used in negative electrode slurry and can be used as a negative electrode material. The dispersion stability of the sizing material is improved.

Fluorescent core-shell particles comprising a core, a first shell disposed on a surface of the core, and a second shell disposed on a surface of the first shell, wherein the core comprises a first polymer selected from a group consisting of a poly(alkyl acrylate), a poly(alkyl methacrylate), and copolymers thereof, the first shell comprises a first polyamine and a second polymer selected from a group consisting of a poly(alkyl acrylate), a poly(alkyl methacrylate), and copolymers thereof, and the second shell comprises a second polyamine and a plurality of carbon dots, wherein at least a portion of the first polyamine is grafted to the second polymer; methods of use and preparation thereof.

This invention discloses a red pigment paste for color photoresist and its preparation method, relating to the field of photoresist technology. The red pigment paste for photoresist comprises the following materials: modified pigment red 177, propylene glycol methyl ether acetate, poly(methacrylic acid-co-acrylate) copolymer, acrylate resin, styrene-maleic anhydride copolymer, and antioxidant. This invention, by adding modified pigment red 177, works synergistically with the poly(methacrylic acid-co-acrylate) copolymer and polydimethyldiallyl ammonium chloride to inhibit pigment particle agglomeration, ensuring uniform dispersion of the pigment in the propylene glycol methyl ether acetate solvent, thus guaranteeing uniform and fine dispersion of the pigment paste. The antioxidant in this invention includes β-cyclodextrin, which can coat pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and UV-327, improving the compatibility of the pigment paste system and extending the storage life of the pigment paste.

The invention relates to the field of metal heat treatment quenching oil, and discloses cooling speed stable type overspeed quenching oil and a preparation method thereof. The cooling speed stable type overspeed quenching oil is prepared from the following raw materials in parts by weight: 85-95 parts of base oil, 2-4 parts of a cooling accelerant, 2-3 parts of a stabilizer, 1-3 parts of a dispersing agent, 0.5-1.5 parts of an antioxidant and 0.5-1 part of a brightener, the stabilizer is composed of ricinoleic acid polyester and polyalkyl methacrylate, and the dispersing agent is composed of stearoyl methacrylate and polyisobutylene succinimide. The overspeed quenching oil is used under the conditions of long-term high temperature and the like, has better quenching cooling stability, is not easy to deteriorate, and is suitable for industrial continuous heat treatment operation.

The present invention relates to poly alkyl (meth) acrylate polymers and methods of making these polymers. The invention also relates to a lubricating oil composition containing the polymer, and application of the polymer in the lubricating oil composition. The present invention relates to the use as a lubricant additive or as a synthetic base fluid in gear oil compositions, transmission oil compositions, hydraulic oil compositions, engine oil compositions, marine oil compositions, industrial lubricating oil compositions or in greases.

The present invention relates to a binder that can be used in a lithium secondary battery, particularly a lithium-sulfur battery, and is prepared by RAFT polymerization, comprises a polyalkyl methacrylate-derived block and a polyacrylic acid-derived block with a thiocarbonyl thio functional group at the center thereof, and comprises an aliphatic functional group at the end thereof. Therefore, electrical conductivity and elution of lithium polysulfide in an electrode using the binder are suppressed.

A separator for lithium-ion batteries and a modification method. The modification method comprises: using anisole as a solvent, octakis(chloropropyl)silsesquioxane as an initiator, methyl methacrylate as a monomer, cuprous chloride as a catalyst, and pentamethyldiethylenetriamine as a ligand, and synthesizing polymethacrylate-polyhedral oligomeric silsesquioxane by means of an atom transfer radical polymerization method; preparing a modified slurry from the polymethacrylate-polyhedral oligomeric silsesquioxane; and coating a surface of a base film of a separator with the modified slurry and drying same, so as to obtain a separator coated with polymethacrylate-polyhedral oligomeric silsesquioxane. The improved technique not only achieves significant effects in terms of improving the mechanical properties and thermal stability of a separator, but also realizes the optimization of cost efficiency and supply stability while maintaining good electrolyte wettability and reducing the internal resistance of a battery cell, thereby exhibiting potential in a wide range of applications.

This invention discloses a flexible, low-loss, phase-stable cable and its preparation method, relating to the field of power cable technology. The cable includes a conductor, an insulation layer, an outer conductor, a shielding layer, and an outer sheath. The insulation layer is obtained by wrapping a modified microporous PTFE tape. The modified microporous PTFE tape comprises the following raw materials in parts by weight: 85-95 parts PTFE resin, 65-15 parts PA, 3-6 parts compatibilizer POE-g-SMA, and 2-5 parts modified boron nitride nanosheets. The modified boron nitride nanosheets are doped with fluorine atoms and grafted with poly(trifluoroethyl methacrylate) on their surface. The modified microporous PTFE tape includes modified boron nitride nanosheets and PA6. PA6 is in-situ fiberized to form a three-dimensional fiber skeleton, which can enhance the resistance to deformation, reduce dielectric loss, and significantly enhance the pore structure of the micropores. Introducing the modified microporous PTFE tape into the insulation layer can maintain good flexibility, low loss, and high structural stability.

This flame retardant for plastics comprises any of a thermally depolymerizable polymer to which a water-soluble functional group, e.g., a carboxylic acid group or a sulfonic acid group, has been imparted, an alkali metal salt of the thermally depolymerizable polymer, and an alkaline-earth metal salt of the thermally depolymerizable polymer. Poly(methacrylic acid), for example, is preferred as the thermally depolymerizable polymer having a structure to which a water-soluble functional group has been imparted. Such flame retardant for plastics contains neither a halogen nor nitrogen nor phosphorus in the molecule and can suitably make general-purpose plastics flame-retardant.

The invention discloses an extremely-cold-resistant high-water-resistance energy storage cable and a preparation process thereof, and relates to the technical field of cables, and the structure of the cable sequentially comprises a conductor, an ethylene propylene diene monomer, a water-resistant filling layer, a water-resistant layer and a chlorinated polyethylene sheath from inside to outside; the waterproof layer comprises an aramid fiber-nylon composite layer, an organic-inorganic sol layer and a cold-resistant waterproof coating layer from inside to outside in sequence; the spandex-nylon composite layer is prepared from an aramid covered yarn layer on the surface of the water-blocking filling layer and a nylon layer covering the surface of the aramid covered yarn layer through melt extrusion; the aramid fiber wrap yarn layer is prepared from aramid fiber wrap yarn and interlayer nylon melt glue; the organic-inorganic sol layer is obtained by curing organic-inorganic sol prepared from polymethylacrylic acid, tetraethoxysilane, perfluoroalkyl trialkoxysilane and a composite solvent; and the cold-resistant water-blocking coating layer is obtained by curing a cold-resistant water-blocking coating prepared from an organic-inorganic filler, hydrogen fluoride ethylene propylene diene monomer and dichloromethane.

The invention belongs to the technical field of liquid resin, and provides a liquid resin system and application thereof in a composite material. The liquid resin system comprises polymethyl methacrylate, polymethacrylic acid, methyl methacrylate and methacrylic acid. The liquid resin system consists of PMMA, PMAA, MMA and MAA, is prepared by adopting a free radical polymerization method, and has better mechanical properties than a unitary PMMA resin system and a binary PMMA-MMA resin system; carboxyl in the MAA monomer can form hydrogen bonds or chemical bonds with groups such as hydroxyl on the surface of a reinforcement, so that the interface bonding force between the resin and the reinforcement is remarkably improved, and the weather resistance of PMMA and the functionality of MAA are both achieved; the viscosity and the reaction activity of a liquid resin system are regulated and controlled by adjusting the proportion of MMA and MAA and adjusting the type, the dosage and the like of an initiator; the prepared composite material is recycled by using MMA as a solvent.

The invention belongs to the technical field of lubricating materials, and particularly relates to layered hydrogel, a preparation method and application thereof and a recovery method of a lubricating coating. The invention provides layered hydrogel. The layered hydrogel comprises a substrate and a lubricating layer compounded on any surface of the substrate, the substrate is a copolymer of polymethylacrylic acid and polymethacrylamide, and the lubricating layer is obtained by dissociating a substrate material in a PBS (Phosphate Buffer Solution). In the invention, the micro-phase separated substrate provides excellent mechanical properties, and the lubricating layer on the surface contributes to an extremely low friction coefficient. The layered hydrogel can achieve both high bearing capacity and low friction characteristics. According to the preparation method, microphase separation is induced through solvent replacement, supramolecular hydrogel with a uniform structure and high strength is directly constructed, a lubricating layer is formed on the surface through a simple dissociation process, and integration of bearing and lubricating is achieved. A solvent replacement method is adopted, so that the body hydrogel has more excellent mechanical strength and lubricating property.

The present invention provides a flame-retardant water-based paint composition that can form a coating with good flame retardancy on buildings and building materials. [Solution] The flame-retardant water-based paint composition contains (A) a water-based binder resin and (B) a non-halogen-based water-soluble synthetic polymer flame retardant. As (B) the non-halogen-based water-soluble synthetic polymer flame retardant, a thermally depolymerizable polymer having a structure to which a water-soluble functional group having a specific structure is attached, its alkali metal salt, or its alkaline earth metal salt can be suitably used. In particular, poly(methacrylic acid), its alkali metal salt, or its alkaline earth metal salt can be suitably used.

The application provides a core-shell structure pesticide-loaded nanofiber and a preparation method thereof, and relates to the technical field of pesticides.The application is aimed at solving the problem that the existing pesticide application method not only causes waste of resources, but also causes serious pollution to the environment.The technical points of the application include: preparation of a spinning solution: cellulose acetate and polymethyl methacrylate are dissolved in N,N-dimethylformamide to obtain a mixed solution;pesticides that need to be released slowly are added to the mixed solution to obtain a spinning solution;preparation of the nanofiber: the spinning solution is added to an electrostatic spinning device for electrostatic spinning to obtain the pesticide-loaded nanofiber.The pesticide-loaded nanofiber with the core-shell structure has the following advantages: the cellulose acetate in the interior plays a supporting role;the carboxyl groups of the polymethyl methacrylate in the exterior act as functional groups, which not only enable the pesticides in the core-shell structure to be released slowly, but also enable the carboxyl groups to adsorb heavy metal ions in water.

This invention discloses a surface-modified metal halide perovskite nanorod composite luminescent material and its preparation method, comprising metal halide perovskite nanorods and a surface copolymer, wherein the surface copolymer is a sulfonic acid-terminated poly(4-vinylpyridine)-poly(trifluoroethyl methacrylate) block copolymer (P4VP-PTFEMA). This invention uses poly(4-vinylpyridine) (P4VP) and poly(trifluoroethyl methacrylate) (PTFEMA) to form a star-shaped 21-arm block copolymer under the initiation of cyclodextrin. After end-group sulfonation treatment, it can stably bind to the surface of metal halide perovskite nanorods, significantly improving the stability of metal halide perovskite nanorods in extreme environments such as ambient temperature, high temperature, and pure polar solvent environments, maintaining a high level of fluorescence intensity. Furthermore, the preparation process is simple, applicable to perovskite nanorods of different types and sizes, uses inexpensive raw materials, and the process is easily scaled up.

The invention belongs to the technical field of supercapacitor electrode materials, and particularly relates to a poly (lithium methacrylate-acrylamide) / lithium phosphate hydrogel electrolyte, a symmetric supercapacitor and a preparation method. The preparation method comprises the following steps: by taking methacrylic acid and acrylamide as comonomers, lithium hydroxide as a neutralizing agent, 2, 2 '-azobis (2-methyl propiamidine) dihydrochloride as an initiator and polyethylene glycol diacrylate as a cross-linking agent, preparing a poly (lithium methacrylate-acrylamide) hydrogel matrix through ultraviolet prepolymerization-two-stage heating polymerization; and soaking and adsorbing a lithium phosphate solution to prepare the hydrogel electrolyte. The problems that in the prior art, a hydrogel electrolyte is low in ionic conductivity and poor in mechanical stability, and a supercapacitor is low in specific capacitance, poor in rate capability and cycle life and complex in preparation process are solved.

The invention provides a deplating solution. The deplating solution comprises the following components in percentage by weight: 10%-30% of sulfuric acid, 0.5%-1.5% of stannous mono-sulphate, 0.5%-2.5% of sodium sulfate, 0.5%-2.5% of a complexing agent, 0.1%-0.5% of an antioxidant, 1%-3% of a copper protection agent, 0.1%-0.5% of an additive and the balance of water, wherein the complexing agent is any one or two of sulfamic acid, methanesulfonic acid, phenolsulfonic acid and citric acid; the antioxidant is any one of resorcinol, hydroquinone and ascorbic acid; the copper protection agent is a core-shell structure corrosion inhibition microsphere, the core-shell structure corrosion inhibition microsphere takes hollow silicon dioxide as a core, the surface of the core-shell structure corrosion inhibition microsphere is grafted with benzotriazole, the outer layer of the core-shell structure corrosion inhibition microsphere is coated with a layer of pH sensitive type polymethylacrylic acid hydrogel shell, and the particle size is controlled to be 5-20 microns; the additive is any one of polyethylene glycol and gelatin. By optimizing the formula of the deplating solution and especially upgrading the copper protection agent system, efficient and lossless deplating of the tin-containing plating layer is achieved, meanwhile, the tin and copper recovery purity is improved, and the service life of the deplating solution is prolonged.

The present invention relates to a fluorescent core-shell particle comprising a core, a first shell disposed on a surface of the core and a second shell disposed on a surface of the first shell wherein the core comprises a first polymer, the first polymer is selected from the group consisting of poly (alkyl acrylate), poly (alkyl methacrylate), and copolymers thereof; the first shell comprises a first polyamine and a second polymer selected from the group consisting of poly (alkyl acrylate), poly (alkyl methacrylate), and copolymers thereof; and the second shell comprises a second polyamine and a plurality of carbon dots, wherein at least a portion of the first polyamine is grafted to the second polymer.