32 results about "Polyhydroxyethyl Methacrylate" patented technology

The invention belongs to the field of polymer synthesis, and particularly relates to temperature response-type polyhydroxyethyl methacrylate and a preparation method thereof. The dibenzoyl peroxide isused as an oxidizing agent, and 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide or 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-propanamide is used as a reducing agent monomer to form a redox initiation system; water and methylbenzene are used as media, a nonionic surfactant is used as an emulsifier, and hydroxyethyl methylacrylate is used as a monomer, a polymerization reaction is carriedout at room temperature and normal pressure to obtain polyhydroxyethyl methylacrylate, and an alcoholic solution of polyhydroxyethyl methylacrylate has a high critical phase transition temperature; the method is simple and stable in polymerization system, low in polymerization cost, easy to operate, mild in condition, small in influence on the environment and low in energy consumption, and the molecular weight and the high critical phase transition temperature of the product are controllable within a certain range. The method is of great significance to theoretical research and large-scale application of temperature-responsive polymers.

The invention discloses ultraviolet cured wood paint and a preparation method thereof. The raw material formula of the ultraviolet cured wood paint comprises the following components in percentage by weight: 30 to 35 percent of modified unsaturated polyester resin, 10 to 20 percent of polyester acrylate, 10 to 15 percent of 1,6-hexanediol diacrylate, 5 to 10 percent oftrimethylolpropane propoxylate triacrylate, 3 to 5 percent of polyhydroxyethyl methacrylate, 0.2 to 0.6 percent of settling agent, 10 to 20 percent of transparent powder, 3 to 6 percent of talcpowder, 0.5 to 1.5 percent of photoinitiator 1, 3 to 5 percent of photoinitiator 2 and 0.2 to 0.6 percent of flatting agent. The ultraviolet cured wood paint can be used as a transparent base coat, is low in cost, simple in preparationmethod and environmentally-friendly, has high transparency, high film performance, high rubbing property and high leveling property, and can create huge economic and social benefit.

The invention discloses an environmental-friendly waterproof coating material. The environmental-friendly waterproof coating material is prepared from the following raw materials in parts by weight: 3.5-9 parts of polyhydroxyethyl methacrylate, 2.5-5 parts of benzyl tributyl ammonium chloride, 3.5-7 parts of titanium white, 6-12 parts of liquid silicon rubber, 1.5-2.8 parts of methylene dicyclohexane amine ethylenediamine, 1.2-2.7 parts of alkyl modified organic siloxane, 2.4-3.6 parts of alkyl naphthalene sulfonate formaldehyde condensate and 1.6-3.2 parts of 3-chloropropyne. Compared with the existing waterproof coating materials, the waterproof coating material has the advantages that the water resistance and waterproofing performance are higher, the tensile strength is high, the waterproof coating material is healthy and environmental-friendly, the environmental pollution is reduced, and wall body flaking caused by rainwater scouring can not occur during long-time use; the waterproof coating material can prevent acid rain scouring, and a coated film can not flake off after the coated film is subjected to rainwater scouring, so that the probability that loss is caused due to the fact that rainwater penetrates into wall faces and corrodes the wall faces is reduced.

The present invention relates to a method for modifying release of a therapeutically active agent from an elastomeric matrix, comprising providing a core comprising an elastomeric matrix and a therapeutically active agent; dipping the core to a coating solution of an elastomer, wherein the elastomer comprises 20-35 wt-% of a filler, calculated from the total amount of filler and elastomer; curingthe dipped core to provide a coated core. In this method the dipping is provided as a continuous process by pulling the core through the coating solution, using a pulling speed suitable for providinga coating thickness of 5-100 mu m; the filler is selected from silica, titanium dioxide, barium sulphate, carbon and mixtures thereof; the elastomer comprised in the core and the elastomer comprised in the coating solution are independently selected from poly(dimethyl) siloxanes, polyethylene vinyl acetates (EVAs), polyurethanes (PUs), polyhydroxyethyl methacrylates (PHEMAs) and polymethyl methacrylates (PMMAs).

The present invention relates to a method for modifying release of a therapeutically active agent from an elastomeric matrix, comprising providing a core comprising an elastomeric matrix and a therapeutically active agent; dipping the core to a coating solution of an elastomer, wherein the elastomer comprises 20-35 wt-% of a filler, calculated from the total amount of filler and elastomer; curing the dipped core to provide a coated core. In this method the dipping is provided as a continuous process by pulling the core through the coating solution, using a pulling speed suitable for providing a coating thickness of δ-IOO the filler is selected from silica, titanium dioxide, barium sulphate, carbon and mixtures thereof; the elastomer comprised in the core and the elastomer comprised in the coating solution are independently selected from poly(dimethyl) siloxanes, polyethylene vinyl acetates (EVAs), polyurethanes (PUs), polyhydroxyethyl methacrylates (PHEMAs) and polymethyl methacrylates (PMMAs).

The invention discloses a heat storage material for solar thermal power generation and a preparation method thereof, belonging to the technical field of new energy materials. The product developed by the present invention includes 60-80 parts of cement, 10-20 parts of molten salt and xerogel compound, 0.3-0.5 part of water reducing agent, and 100-200 part of aggregate; the molten salt and xerogel composite In the object, the molten salt is evenly dispersed in the pore structure of the xerogel; the xerogel is any one of polyoxyethylene-propylene oxide block copolymer and polyhydroxyethyl methacrylate. When preparing the molten salt and xerogel composite, first disperse the saturated molten salt solution and the polymer used in the xerogel, stir and dissolve; then refrigerate at 2-4°C for 8-12h, filter, wash, Dried and crushed to obtain molten salt and xerogel complex. The product obtained by the invention can have both the good heat conduction effect of molten salt and the structural stability effect of concrete.

The invention belongs to the field of polymer synthesis and discloses a method for preparing branched polyhydroxyethyl methacrylate at room temperature by inverse emulsion polymerization. Use dibenzoyl peroxide as an oxidizing agent, 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide as a reducing agent monomer to form a redox initiation system, water and toluene as the medium, the non-ionic surfactant as the emulsifier, and the hydroxyethyl methacrylate as the monomer. Polymerize at room temperature and pressure to obtain branched polyhydroxyethyl methacrylate. The polymerization system of the invention is simple and stable, the synthesis and purification of the reducing agent monomer are simple, and the polymerization cost is greatly reduced. The reaction does not require temperature control and pressurization, low energy consumption, easy operation, and less impact on the environment. The molecular weight of the obtained branched polyhydroxyethyl methacrylate is high, and the molecular weight and branching degree can be regulated in a wide range. This method is of great significance to the theoretical research and large-scale application of branched poly(hydroxyethyl methacrylate).

The invention discloses a carboxymethylation modification method of polyhydroxyethyl methacrylate. The method comprises the following steps: adding polyhydroxyethyl methacrylate into an organic solvent, fully stirring to enable polyhydroxyethyl methacrylate to be in a dispersed state, dropwise adding an aqueous alkali solution, carrying out an alkalization reaction at a constant temperature of 35-40 DEG C, adding sodium chloroacetate after the reaction is finished, heating the reaction system to 50-60 DEG C, carrying out etherification reaction under the condition of constant-temperature stirring, cooling a reactant to room temperature after the reaction is finished, regulating the pH value of the reactant to 6.8-7.2, carrying out suction filtration on the product, washing the filtrate, and drying to obtain the carboxymethylated modified polyhydroxyethyl methacrylate. The invention also discloses a modified polyhydroxyethyl methacrylate gel, which comprises the following components inpercentage by weight: 5 to 15 percent of carboxymethylated modified polyhydroxyethyl methacrylate , 0.5 to 0.7 percent of an initiator, 0.005 to 0.1 percent of lambda-type carrageenan and the balanceof water. The invention also discloses a drug excipient containing the modified polyhydroxyethyl methacrylate gel and an external gel.

The invention belongs to the field of polymer synthesis, and in particular relates to a temperature-responsive polyhydroxyethyl methacrylate and a preparation method. With dibenzoyl peroxide as oxidizing agent, 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide or 2-methyl-N-[3-(methyl ‑Phenyl‑amino)‑propyl]‑propionamide is a reducing agent monomer to form a redox initiation system, water and toluene are media, nonionic surfactants are emulsifiers, and hydroxyethyl methacrylate is a monomer. Polymerization reaction at room temperature and normal pressure to obtain polyhydroxyethyl methacrylate, and its alcohol solution has a high critical phase transition temperature. The polymerization system of the invention is simple and stable, the polymerization cost is low, the operation is easy, the conditions are mild, the impact on the environment is small, the energy consumption is low, and the molecular weight and high critical phase transition temperature of the product are controllable within a certain range. It is of great significance to the theoretical research and large-scale application of temperature-responsive polymers.

The present invention has bone tissue rack comprising pHEMA, nanometer TiO2 particle and HA, pHEMA with added nanometer TiO2 particle forms the rack, and HA layers are deposited onto the inner and the outer surfaces. The preparation process of the bone tissue rack includes: preparing the rack material via photo cross-linking and salt leaching method or melting to form and particle leaching method; soaking the rack material inside HA salt solution with urea and heating; and mineralizing treatment. The bone tissue rack of the present invention has no teratogenic, cancerogenic and other bad reactions, no toxic side effect, no pHEMA degradation, and no influence on cell activity.

The present invention discloses a method of polymethyl -aminate and polymethyl acrylic hydroxyl ethyl to improve the hydrophilicity and softness of polypeptide membrane.Alcohol, catalyst and solvents, in an inert atmosphere, react for a period of time, add butanol response for a period of time, and then add 3‑ hydroxyl propyate reactions, which may contain polymethyl acid ester with endboxyl group;Polymethytate, solvents, sync, and polypeptides of the polymeramine containing carboxyl groups, in an inert atmosphere, reacts for 2 to 3 days, and the polypeptide polyethylemate embedded segment; 3) in the dry reactionThe polypeptide polyacramine is added to the polypenicate, polymethylene acrylic hydroxyl ethyl ethyl, and solvents. In an inert atmosphere, mix for a period of time to form a film and dry with a flowing method.The preparation process of the present invention is simple, and the hydrophilicity and softness of the transformer membrane have greatly improved.

The invention provides a dual-network reinforced composite quick-drying gel cement material and a preparation method thereof. The material comprises the following components in parts by weight: 30-40parts of polyhydroxyethyl methacrylate; 35-48 parts of a carbon fiber-organic-inorganic double-network polymer; 15-20 parts of plant fiber; 10-20 parts of bentonite nanoparticles; 10-20 parts of a surfactant; 10-20 parts of graphene; 10-20 parts of hexagonal boron nitride; 2-5 parts of boric acid; 10-15 parts of tricalcium phosphate; 5-10 parts of a redox system initiator; 4-8 parts of a crosslinking agent; and 3-5 parts of a polycarboxylate superplasticizer. The carbon fiber-organic-inorganic double-network polymer produced by using industrial production waste is adapted to graft the plant fiber, and a good graft copolymerization effect with polyhydroxyethyl methacrylate is achieved, the flexural strength and ductility of the synthesized cement material are enhanced, and addition of graphene can make a cement system form a self-monitoring system that monitors various parameters of concrete.

A polyhydroxyethyl methacrylate modified phenolic foam and a preparation method thereof, relating to a phenolic foam and a preparation method thereof, the present invention relates to a polyhydroxyethyl methacrylate modified phenolic foam, the modified phenolic resin The raw materials of the method are phenol, sodium hydroxide, solid paraformaldehyde and polyhydroxyethyl methacrylate; surfactants, foaming agents and curing agents are used in the foaming stage, wherein the surfactant is Tween-80; Foaming agent is n-pentane; Curing agent is p-toluenesulfonic acid; Adopt the product prepared by the present invention, mainly utilize the hydroxyl group that polyhydroxyethyl methacrylate has and the methylol group generation etherification reaction of phenolic resin to generate ether bond, Furthermore, a graft copolymer with longer side groups is formed by ether bonds, which greatly improves the toughness of the material while maintaining good flame retardancy, and at the same time the compressive strength is also significantly improved, which is suitable for demanding External wall insulation construction.

The invention discloses a composite artificial cornea and a preparation method thereof. The composite artificial cornea comprises a central optical lens column made of polyhydroxyethyl methacrylate (PHEMA) and a corneal skirt structure made of acellular matrix hydrogel , and an intermediate sandwich grid support connecting the central optical mirror column and the corneal skirt structure, wherein the corneal skirt structure is provided with a nerve cell support layer and a corneal stromal cell support layer with cells adhered thereto. The composite artificial cornea is simple in structure, good in biocompatibility, easy to process, can well simulate the environment of the cornea in the body, and is favorable for transplantation.

The invention provides a hydrogel dressing and a preparation method thereof. The dressing is prepared from a sea-buckthorn extract, a Chinese atractylode rhizome extract, hyaluronic acid, polylysin, polyhydroxyethyl methacrylate, carrageenan, 2-hydroxyethyl methacrylate, vitamin C, polyvinyl alcohol, calcium chloride, borax, ammonium dihydrogen phosphate, glycerinum, mannose and deionized water. The preparation method comprises the following steps: firstly preparing the sea-buckthorn extract and the Chinese atractylode rhizome extract, respectively, adding such components as hyaluronic acid, polylysin, polyhydroxyethyl methacrylate, carrageenan, 2-hydroxyethyl methacrylate and ammonium dihydrogen phosphate to 1 / 2 parts by weight of ionized water to obtain a mixed liquid I, next, adding such components as vitamin C, polyvinyl alcohol, calcium chloride, borax, glycerinum and mannose to the rest parts by weight of deionized water to obtain a mixed liquid II, and finally, mixing the sea-buckthorn extract, the Chinese atractylode rhizome extract, the mixed liquid I and the mixed liquid II, namely performing a thermal reaction, thereby obtaining the hydrogel dressing. The hydrogel dressing is capable of promoting the healing of a wound, and lasting in antibacterial effect and low in production cost.

The invention discloses a method for preparing polyhydroxyethyl methacrylate-titanium dioxide nano-hybrid material, comprising the following steps: S1, preparation of nano-titanium dioxide loaded with silver on the surface; S2, polyhydroxyethyl methacrylate-titanium dioxide nanometer Preparation of hybrid materials. A method for preparing polyhydroxyethyl methacrylate-titanium dioxide nano-hybrid material provided by the invention is a preparation method that minimizes copper ion residues, the system does not need any additives, and the obtained nano-hybrid material has relatively high Good density chain improves the safety of polymer use and saves the preparation cost. The preparation method of the invention has simple steps, easy operation, mild preparation conditions, easy control and high efficiency.

The invention discloses a hydrogen peroxide response-type targeted medicine carrying nanomaterial and a preparation method, and belongs to the technical field of nanomaterials. The structural formulaof the hydrogen peroxide response-type targeted medicine carrying nanomaterial is shown in the description. The preparation method comprises synthesis of PHEMA (Polyhydroxyethyl Methacrylate), synthesis of PHEMA-Sim / Prv / Com / Lo and synthesis of PHEMA-Sim / Prv / Com / Lo-ISO-1. Nanoparticles prepared by the method have high medicinal utilization rate, and a function of targeting atherosclerotic plaques.