144 results about "Sodium methacrylate" patented technology

A method dewatering thin stillage process streams generated in the processing of grain to ethanol comprising adding to the process streams an effective coagulating and flocculating amount of an anionic copolymer comprising acrylic acid sodium salt, methacrylic acid sodium salt or 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt to form a mixture of water and coagulated and flocculated solids; and separating the water from the coagulated and flocculated solids using a dewatering device.

A method of dewatering corn stillage solids comprising adding to the solids an effective coagulating and flocculating amount of an anionic copolymer comprising acrylic acid sodium salt, methacrylic acid sodium salt or 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt to form a mixture of water and coagulated and flocculated solids; and separating the water from the coagulated and flocculated solids using a dewatering device.

A method dewatering thin stillage process streams generated in the processing of grain to ethanol comprising adding to the process streams an effective flocculating amount of an anionic copolymer comprising acrylic acid sodium salt, methacrylic acid sodium salt or 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt to form a mixture of water and flocculated solids; and separating the water from the flocculated solids using a dewatering device.

The invention relates to the technical field of sublimation transfer printing, discloses self-adhesive quick-drying sublimation transfer printing digital paper. The paper includes, from the bottom to the top, a base material sheet (1), a hydrophobic layer (2), a water-absorbing layer (3), an ink-absorbing layer (4) and a net-shaped surface layer (5), wherein the water-absorbing layer (3) includes interspace holes and is made of acrylic acid-2-acrylamide-2-sodium methacrylate copolymer; the net-shaped surface layer (5) is prepared from, in parts by weight, 25-45% of polyvinyl alcohol-vinyl acetate copolymer and 55-75% of sodium carboxymethyl cellulose; holes are formed in the hydrophilic end of the water-absorbing layer, so that the water contained in the ink can be adsorbed into the holes, and the beneficial effect that the ink can dry quickly after being transferred to a medium material is achieved. According to the invention, the net-shaped surface layer (5) structure facilitates quick absorption of the ink during the printing process; during the transferring process, the net-shaped surface layer can realize maximized adhesion to the medium material; the technical problems that the pattern is blurred or overlapped with another because of easy displacement during the printing ink absorption and transferring processes are solved.

The invention discloses a high wear-resistant low-smoke halogen-free irradiation crosslinking sheathing material and a preparation method thereof. The high wear-resistant low-smoke halogen-free irradiation crosslinking sheathing material is prepared from the following components in parts by weight: 20-40 parts of ethylene-vinyl acetate copolymer, 1-10 parts of modified ultra-high molecular weight polyethylene, 1-10 parts of ethylene-methacrylic acid sodium salt copolymer, 40-60 parts of aluminum hydroxide, 4-8 parts of carbon black, 1-5 parts of compatilizer, 0.3-0.9 parts of antioxygen, 0.4-1.0 parts of lubricant and 0.5-2 parts of silicone powder. The product has excellent wear resistance and low temperature resistance, and can pass a wear-resistant test.

The invention provides a hydrophilic lubricating coating for a medical device and a preparation method of the hydrophilic lubricating coating. The preparation method comprises the following steps: (1)dissolving a monomer, a silane coupling agent and an initiator in water to form a mixed solution, and carrying out free radical polymerization reaction under ultraviolet irradiation to obtain a hydrogel precursor solution for preparing the hydrophilic lubricating coating; wherein the monomer is selected from one or a combination of at least two of acrylic acid, methacrylic acid, sodium acrylate and sodium methacrylate; (2) coating the surface of the medical device with the hydrogel precursor solution obtained in the step (1); and (3) heating and curing the medical device coated with the hydrogel precursor solution obtained in the step (2) to form the hydrophilic lubricating coating. The hydrophilic lubricating coating provided by the invention can form a firm covalent bond with the medical device, so that the surface of the medical device has super-lubricating and hydrophilic characteristics, and the characteristics are stable and long-acting; the preparation method is simple and easyto implement, the coating does not need to be prepared in situ on device, and the technological process is simplified.

The invention belongs to the polymer material field and in particular to a poly(ester-ether) polymer antistatic agent. The polymer antistatic agent mainly comprises the following raw materials in parts by weight: 100 parts of poly(ethylene glycol) methyl ether methacrylate, 30-250 parts of methylmethacrylate, 2-50 parts of the mixture of sodium methacrylate or methacrylic acid and sodium carbonate, 1-30 parts of sodium silicate and 0.1-5 parts of azodiisobutyronitrile (AIBN). In the preparation method in the invention, unstable and poisonous sodium perchlorate is not adopted, thus the production process becomes more environmentally friendly. In addition, by adopting the preparation method, the temperature resistance characteristics of the product can be increased and the application rangecan be expanded; and the polymer antistatic agent can be used in the antistatic materials such as polyethylene terephthalate (PET), polybutyleneterephthalate (PA), polybutylene (PB), poly ethylene (PE), propene polymer (PP), poly styrene (PS), acrylonitrile butadiene styreneacrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC) and polyethylene (PLA). In the preparation method in the invention, the solid antistatic agent suitable for granulation can be obtained without adding coupling agent, thus the cost is lower, the electrical property is better and the surface resistivity is up to 106-107 omega/sq.

The invention discloses a method for preparing a polymer retanning fat-liquoring agent and the retanning fat-liquoring agent. The preparation method comprises the following steps of: preparing long-chain fatty alcohol maleic acid monoester by adopting C8-C18 long-chain fatty alcohol and maleic anhydride, preparing the long-chain fatty alcohol maleic acid monoester into long-chain fatty alcohol maleic acid monoester salt, and then dripping methacrylic acid octadecyl ester, aqueous solution of sodium methacrylate and aqueous solution of initiator into the long-chain fatty alcohol maleic acid monoester salt to perform aqueous emulsion copolymerization to form the polymer retanning fat-liquoring agent. The polymer retanning fat-liquoring agent contains terpolymer of the methacrylic acid octadecyl ester, the long-chain fatty alcohol maleic acid monoester and the methacrylic acid. The preparation method saves an organic solvent during synthesizing the retanning fat-liquoring agent so as to reduce environmental pollution, and meanwhile overcomes the defect of insufficient fat-liquoring performance of a long-chain fatty alcohol maleic acid monoester and methacrylic acid copolymer by introducing oleophilic methacrylic acid octadecyl ester monomer into the polymer.

The invention relates to an acid-proof latex paint, belonging to the technical field of coating. The latex paint contains the following components: polystyrene latex, polyvinyl acetate-ethylene emulsion, dispersing agent (sodium polymethacrylate), FCCHA, preservative (sodium pentachlorophenate), polyethylene glycol, polyurethane, hexanediol, diethylene glycol, pyrethroid, deionized water, titaniumdioxide and wollastonite in powder. The quality of the latex paint is improved, and the acid-proof property is better improved, so that the latex paint can completely resist the erosion of acidic substances of acid rain and the like.

The invention discloses a method for preparing a polycarboxylic acid high-efficiency slushing agent which belongs to the field of chemical building materials. The polycarboxylic acid high-efficiency slushing agent is prepared from the materials of acrylic acid, sodium methacrylate, maleic anhydride, polyoxypropylene ether sulfate, potassium peroxodisulfate, sodium hydroxide and deionized water in the assistance of a certain process conditions. The preparation method has the advantages that the production process is simple, and the product is non-toxic and suitable for various cements; and the preparation method has the characteristics that the raw material separation can be protected, so that concrete with consistent quality is manufactured; 2, high availability in a long time is kept; 3, slurry is reduced, and the deep precipitation of concrete is reduced; and 4, the polycarboxylic acid high-efficiency slushing agent has good slushing effect, collapse resistance, high water-reducing rate and high concrete workability.

The invention relates to the field of anticorrosive paint and in particular relates to flexible moisture-resistant water-based anticorrosive paint for bamboo-weaved rattan chairs. The anticorrosive paint is prepared from the following raw materials in parts by weight: 2-3 parts of sodium methacrylate, 0.01-0.02 part of disodium stannous citrate, 4-5 parts of aminosilane, 20-40 parts of acrylic emulsion with the solid content of 40%-50%, 18-24 parts of a waterborne polyurethane dispersoid with the solid content of 30%-40%, 0.5-0.8 part of a wetting agent, 1-2 parts of coco fatty acid diethanol amide, 12-18 parts of de-ionized water and 1-2 parts of an assistant. According to the anticorrosive paint, the acrylic emulsion is compounded with the polyurethane dispersoid, and aminosilane is added for modification, so that the paint is excellent in flexibility and environmental corrosion resistance, and a paint film is good in adhesion and resistant to heat and water; in combination with the materials such as the assistant with auxiliary film forming and drying effects, the wetting agent and disodium stannous citrate, the paint forms the dense and bright paint film on the surface of a bamboo material and is free of bad odor, environment-friendly and safe, and the mildew and rot phenomena of the rattan chairs are effectively improved.

The invention discloses a polycarboxylic acid water reducing agent with narrow molecular weight distribution and a preparation method thereof, belonging to the technical field of slump retaining agentpreparation. The polycarboxylic acid water reducing agent with narrow molecular weight distribution and the preparation method thereof realize that the molecular weight distribution and controllability of the obtained polycarboxylic acid high-efficiency water reducing agent are greatly improved. After propyl polyoxyethylene ether is mixed with a water-soluble initiator and a water-soluble activechain transfer agent, the obtained molecular weight distribution is narrower, and the dispersibility of the product is better. At the same time, sodium methacrylate sulfonate and modified acrylate compounds are added to facilitate improving of the early strength, slump retention, reinforcement and other properties of the prepared polycarboxylic acid water reducing agent; moreover, a heat preservation interlayer with an automatic regulation function is arranged in a reaction kettle, is beneficial to realizing the conversion of heat transfer and cold transfer in the heat preservation interlayer,improving the lifting sensitivity of the temperature in the reaction kettle, eliminating the need for manual temperature regulation, and effectively avoiding the influence on the preparation of the polycarboxylic acid water reducing agent caused by large temperature control difficulty.

The invention discloses methyl acrylate metal salt-intercalated and modified kaolin as well as a preparation method thereof, wherein the preparation method comprises the following steps: (1) pre-treatment of kaolin: the kaolin is dispersed in an N, N- dimethyl formamide (DFM) solvent, ultrasonically treated for about 2 hours at the constant temperature of 60 DEG C to obtain milk white kaolin dispersion liquid; (2) preparation of kaolin suspension liquid: the kaolin dispersion liquid obtained in the step (1) is centrifuged and separated at a high speed to remove the N, N- dimethyl formamide (DFM) solvent, and dried for 12 hours in vacuum to obtain a white kaolin stable phase; and then, the obtained kaolin stable phase is treated for 2-6 hours at 500 DEG C-650 DEG C in a muffle furnace, dispersed in an organic solvent and ultrasonically treated for 0.5 hour-3hours to obtain uniformly dispersed kaolin suspension liquid; and (3) preparation of methyl acrylate metal salt kaolin by intercalation and modification: wherein metal chloride aqueous liquor is added into the kaolin suspension liquid obtained in the step (2), ultrasonically treated for 1 hour-5 hours under power of 160W-400W, dropwise added with methyl sodium acrylate liquor in the suspension liquid, and uniformly stirred; and the solvent is evaporated and removed under 120 DEG C to obtain white methyl acrylate metal salt-intercalated and modified kaolin powder.

The invention provides a rapid microwave preparation method of glycidyl (meth)acrylate. The method is characterized in that (meth)acrylic acid, sodium carbonate or sodium hydroxide, and epichlorohydrin are used as raw materials. The preparation method comprises the following steps: preparing sodium (meth)acrylate, performing microwave vacuum drying on the sodium salt; performing a phase transfer catalytic reaction on sodium salt and epichlorohydrin under microwave irradiation, adding a polymerization inhibitor and a phase transfer catalyst in the system and reacting for 14 minutes. Through using the preparation method, the product conversion rate is up to more than 95%; compared with the traditional method, the time is reduced by about ten times; by adopting the method, the reaction rate of the product can be increased and the production period can be shortened; and the method is extremely high in industrial application value.

The invention discloses a preparation method of hyperbranched zwitterionic polyacrylamide and application of the hyperbranched zwitterionic polyacrylamide in oilfield exploitation. The preparation method comprises the following steps that S1, materials are prepared by mole; S2, 0.05-0.2 part of 4-dimethylaminopyridine and 0.01-0.05 part of dicyclohexyl carbodiimide are dissolved in 1-2 parts of diethyl ether to prepare a composite catalyst; S3, 2-3 parts of a cyclohexanol branching agent and 16-24 parts of ethylenic-bond-type unsaturated anionic monomers react with each other at 70-80 DEG C for 2-3 hours under the function of the catalyst; S4, 40-60 parts of acrylamide monomers, 6-12 parts of sodium methacrylate monomers, 10-18 parts of ethylenic-bond-type unsaturated cationic monomers andan initiator are added into the first reaction solution, and a polymerization reaction is carried out at 45-70 DEG C for 4-10 hours; S5, 2-6 parts of tetrabutyl titanate is added, the pH is adjustedto be 5.0, hydrolysis is carried out at 65-85 DEG C for 1-2 hours, and overnight standing, neutralization and drying are conducted. According to the method, with cyclohexanol as a hexahydroxy parent nucleus, the spherical polyacrylamide with a three-dimensional stereoscopic multi-arm compact structure is synthesized, the salt resistance and shear resistance are obviously improved, the molecular weight is high, and the polyacrylamide is easily dissolved in various solvents.

The invention discloses an aqueous softener which comprises, by weight, 20-25 parts of sodium tripolyphosphate, 15-20 parts of sodium dihydrogen phosphate, 15-20 parts sodium pyrophosphate, 10-15 parts of citric acid, 10-12 parts of dimethyl ethanolamine, 8-10 parts of fatty alcohol polyoxyethylene ether, 10-12 parts of monoethanolamine, 8-10 parts of sodium methacrylate, 10-15 parts of potassium polymetaphosphate, 8-10 parts of rosin resin and 10-12 parts of phenolic resin. The aqueous softener has the advantages that the softener is used for printing and dyeing fabric and clothing materials in the textile industry, hard water can be softened sufficiently, clothing material dying brightness is well guaranteed during printing and dyeing, and standard printing and dyeing is achieved.

The invention relates to the field of petroleum drilling, and particularly discloses a nanometer plugging agent and a preparation method thereof. The nanometer plugging agent is prepared from the following raw materials in parts by weight: 10 to 50 parts of vinyl monomer, 10 to 25 parts of allyl monomer, 5 to 15 parts of sodium methacrylate sulfonate, 2 to 10 parts of an emulsifier, 1 to 1.5 parts of an initiator, 15 to 55 parts of water, 5 to 10 parts of an organic emulsion, 15 to 25 parts of a filler and 5 to 10 parts of sepiolite. The organic emulsion is prepared from the following components in parts by weight: 1 to 1.5 parts of polylactic acid, 0.5 to 1 part of lignocellulose, 1 to 4 parts of stannic chloride, 0.3 to 0.5 part of sodium dodecyl benzene sulfonate, 0.1 to 0.2 part of benzimidazole, 0.5 to 1 part of gelatin, 2 to 3 parts of dimethyl sulfoxide and 1 to 1.5 parts of white oil. The nanometer plugging agent can plug micro-nano gaps, acting force between nano-particles and the stratum is large, the nano-particles are not prone to being separated from the gaps, a plugging rate is high, and high temperature resistance is high.

The invention discloses a method for improving the performance of a silane film on the surface of an aluminum alloy, which comprises the following steps: putting the polished aluminum alloy raw material into a cleaning solution to clean it; After mixing the ionic water and sodium methacrylate sulfonate, stir for 6-10 minutes, the preparation of the film-forming solution is completed, and then the mixed solution is placed in a non-ventilated place for hydrolysis, and the hydrolysis time is 3-5 hours; put the aluminum alloy material into In the prepared film-forming solution, after 2-5 minutes, add diisooctyl phosphate of 0.03-0.05 times the weight of the film-forming solution to the film-forming solution, continue to soak, take out the aluminum alloy material, and place it in a ventilated place for static Set to make a finished product. In the present invention, the silane film prepared on the surface of the aluminum alloy has strong adhesion, good wear resistance, and good corrosion resistance, and the uniformity and density of the film are good, which can effectively prevent aluminum alloy products from being The membrane at the middle surface is mechanically damaged.

The invention discloses a preparation method of an adsorbent resin used for plant flavone extraction. The preparation method comprises the following steps: using surface active agent modified nano calcium carbonate crystal whiskers, then using modified calcium carbonate crystal whiskers to be matched with a pore-foaming agent, using methyl methacrylate, styrene and sodium methacrylate to polymerize and prepare resin by using an antiphase emulsifiable method, and then preparing diluted hydrochloric acid to remove calcium carbonate inside the resin to obtain the adsorbent resin. The adsorbent resin prepared in the invention has the advantages of large specific surface area, more pore canals and large adsorbing capacity for flavone.