141 results about "Butenedioic acid" patented technology

The invention discloses aqueous acrylic acid-modified alkyd resin and a preparation method thereof. Basic alkyd resin of the aqueous acrylic acid-modified alkyd resin is prepared from an unsaturated fatty acid, benzoic acid, trimethylolpropane, pentaerythritol, maleic anhydride, isophthalic acid, ethylene glycol monobutyl ether and butanol. The aqueous acrylic acid-modified alkyd resin is prepared by adding styrene, methyl methacrylate, butyl acrylate, acrylic acid, a silane coupling agent, benzoyl peroxide, tert-butyl hydroperoxide, ethylene glycol monobutyl ether and a mixing neutralizer into the basic alkyd resin. According to the aqueous acrylic acid-modified alkyd resin and the preparation method thereof, the advantages of alkyd resin and acrylic resin are integrated, and a product has high gloss retention, color retention and weather resistance; a production process is simple, the raw materials are readily available, and the production cost is low; a paint production process is simple, water is used as a diluting agent, and safety and convenience in construction are ensured.

The invention provides siloxane-modified aspartic ester as well as a preparation method and application thereof. The aspartic ester has a siloxane structure and can enhance the adhesive force of a prepared coating layer onto inorganic and metal base materials. The preparation method comprises the following steps: during synthesis, firstly obtaining aspartate polyamines with un-reacted secondary amine groups through the reaction between diester butenediate and polyvinyl polyamine; then adding a silane coupling agent capable of reacting with an amine group to obtain the siloxane-modified aspartic ester. The siloxane-modified aspartic ester provided by the invention can be used as a two-component polyurea/polyurethane coating resin monomer to improve the adhesive force of the coating layer onto the base materials.

The invention discloses a chloroprene rubber gasket with high abrasion resistance. The chloroprene rubber gasket comprises the following raw materials in parts by weight: 135-145 parts of chloroprene rubber (CR)121, 10-15 parts of butyl rubber CBK139, 20-25 parts of low density polyethylene, 3-5 parts of acetyl triethyl citrate, 2-5 parts of dibutyl maleate, 1-2 parts of isooctyl dimercaptoacetate di-n-octyl tin and the like. The chloroprene rubber gasket has the beneficial effects that the gasket has good high temperature resistance, sealability, flame retardance and corrosion resistance and can work in such medias as acid, alkali and oil for a long time; the volume and hardness of the gasket are small in variation; the gasket does not adhere to metal surfaces; and the gasket has small friction coefficient and good abrasion resistance and has the advantages of softness of bonding with sealing surfaces, good weathering aging and ozone aging resistance, durability and the like.

A degradable unsaturated polyester-amidourea resin used for disposable food container, packing material, plastic bag, medicinal coating, capsule and slow-releasing material, etc is prepared from C2-C4 binary alcohol, anti-butenedioic acid or maleic anhydride, and urea through fusing and polycondensating. It can be modified by starch or calcium carbonate powder.

The invention provides a preparation method for fatty acid monoethanolamide succinate sulfonate. The preparation method is characterized by comprising the steps of generating amidation reaction by fatty acid and monoethanolamide to generate fatty acid monoethanolamide which is reacted with butenedioic acid or maleic anhydride to generate fatty acid monoethanolamide butenedioic acid ester, and generating salt formation reaction of the fatty acid monoethanolamide butenedioic acid ester and hydrosulphite to generate the fatty acid monoethanolamide succinate sulfonate. Compared with the prior art, trace cutting liquid prepared from the fatty acid monoethanolamide succinate sulfonate provided by the invention has high lubricating property, extreme pressure antiwear property and biological degradability; a high-end requirement on metal processing can be met only by using an extremely small amount of the trace cutting liquid; therefore, harm to the environment and workers is alleviated, and the pollution to the environment is reduced to the maximum extent.

The invention provides a water-soluble cationic polyaspartic ester and a synthesis method thereof. The substance has a 3-hydroxyazetidine structure. During synthesis, firstly butene diacid diester reacts with polyethylene polyamine to obtain polyaspartic ester polyamine with unreacted secondary amine group, and then adding epoxy chloropropane for reaction with the secondary amine group so as to obtain water-soluble polyaspartic ester with azetidine cationic group. The cationic polyaspartic ester monomer can be compounded with isocyanate to develop water-soluble polyurea or polyurea/polyurethane coating resin.

The invention discloses an early-strength type polycarboxylic acid water reducer and a preparing method thereof in the technical field of concrete additives. The preparing method adopts methyl allyl polyethenoxy ether, maleic anhydride and acrylamide as monomers and includes adding an oxidant, a reductant and a chain transfer agent, and performing copolymerization in water. The prepared water reducer has characteristics of good slump loss resistance and good cement adaptability, and has obvious early-strength reinforcing effects. Adjustment of the pH value by using an alkaline solution is not needed in a preparing process. The process is simple and easy in operation.

The invention discloses a hyperdispersant for pesticide. In a general formula, an M part comprises styrene, vinyltoluene, ethyl styrene, methoxy styrene and phenoxy styrene; an N part comprises various kinds of acrylic polyether ester and methacrylic polyether ester; an O part comprises acrylic acid ester containing tertiary amino group; and a P part comprises acyclic acid, methacrylic acid, butenedioic acid and maleic anhydride. The invention also provides a preparation method and application of the hyperdispersant. The hyperdispersant provided by the invention is applied to a pesticide suspension agent (SC) and is low in price, so that the cost of a sub-nano pesticide preparation is low. Therefore, the demand on original pesticide can be greatly reduced, and the pollution to environment and poison brought by production of original pesticide of the pesticide are greatly reduced; and in addition, poisonous residue for soil due to use of pesticide can be greatly reduced, and pesticide residue of crops can be reduced.

The invention provides a calcium carbonate modifier and a preparation method thereof. The calcium carbonate modifier is eleostearic acid estolide hydrolysate, which is prepared by taking eleostearic acid and maleic anhydride as materials to directly synthesize eleostearic acid estolide by one-step procedure and using a proper amount of water to hydrolyze the eleostearic acid estolide. The invention has the advantages of simple production process, low production cost, high yield, easy popularization and the like. The calcium carbonate modifier has more action points and can chemically react with calcium carbonate, thereby having better effect than the traditional stearic acid modifier.

The invention discloses a novel copolyster hot melt adhesive and a preparation method thereof. The preparation method is mainly characterized by comprising the following steps: selecting raw materials (including bisphenol A, maleic acid, terephthalic acid, other binary acids, 1,4-butanediol, other dihydric alcohols, a catalyst and a stabilizer) at a preset ratio; performing negative-pressure generation of a prepolymer at the low-temperature section; then completing normal-pressure esterification at the low-temperature section; after that, completing negative-pressure polycondensation at the high-temperature section; finally, preparing the novel copolyster hot melt adhesive product. The prepared novel copolyster hot melt adhesive product is greatly improved in dry cleaning resistance and not inferior to the washing resistance of a polyamide hot melt adhesive, on the basis of maintaining the comprehensive performance of a conventional copolyster hot melt adhesive product, and the integral cost of the prepared novel copolyster hot melt adhesive product is lower than that of the conventional polyamide hot melt adhesive.

The invention relates to the technical field of fluorescent porous materials, and particularly relates to a fluorescent porous material as well as a synthetic method and application thereof. A chemical formula of the fluorescent porous material disclosed by the invention is C26H16N7O9Cd2; a main ligand is 1,3,5-tri-benzene imidazolyl, an auxiliary ligand is butene diacid, and a solvent is N,N-dimethylformamide; the fluorescent porous material is prepared through a heating method of the solvent. The fluorescent porous material disclosed by the invention has simple raw materials, a preparation process is simple and easy, and the fluorescent porous material has higher heat stability and fluorescence emission property. In a process of detecting pesticide paraquat by adopting the material, thesensitivity is high, the detection selectivity is good, and the fluorescent porous material has good application prospects in the field of material science.

The invention discloses a method for synthesizing a flexible carboxylic acid and transition metal complex by taking Fe<3+>, Pb<2+> or Ba<2+> as a metal center and the 5-amino-1,2,4-triazole-3-carboxylic acid, succinic acid, malonic acid, adipic acid, butenedioic acid (cis, trans), 2,3-quinoline dicarboxylic acid or 2,5-dicarboxythiophene as an organic ligand, and provides an application of the complex serving as a catalyst to catalyze a phenol hydroxylation reaction. Through the method and application disclosed by the invention, by taking the synthesized complex as a catalyst to catalyze the phenol hydroxylation to obtain benzenediol, the yield can approach 74%; and the catalysis reaction is green and environment-friendly, and the catalyst is expected to become a novel catalyst for catalyzing phenol hydroxylation.

The invention discloses a reaction catalyst for preparing gamma-butyrolactone through maleic anhydride hydrogenation, and a preparation method and application thereof. The catalyst has a hierarchical pore structure and relates to two transition metals A and B and a silicon-based MFI molecular sieve. The micropore diameter of the MFI molecular sieve is 0.6 to 0.8 nm; and the component A of the catalyst metal part mainly refers to one or more than two of transition metal elements Fe, Co, Ni, Cu and Zn, the component B refers to one or more than two of metals Zr, Y, Hf, La, Ce, Sn and Ti, and active metal components are loaded in an in-situ synthesis or post-treatment mode. The invention provides the high-stability and high-efficiency catalyst for catalyzing maleic anhydride hydrogenation to prepare gamma-butyrolactone, and the preparation method thereof. Compared with a noble metal catalyst, the catalyst is cheaper in cost, can be comparable with the catalytic performance of the noble metal catalyst in the reaction, and has an industrial application prospect.

The invention provides a multifunctional polyaspartic acid ester mixture and a preparation method and application thereof. The preparation method of the polyaspartic acid ester mixture comprises the following steps: reacting mixtures of diaminodicyclohexylmethane and polyaminopolycyclohexylmethane in different mixing ratios with butenedioic acid diester to prepare a polyfunctional polyaspartic acid ester mixture; and after the reaction is finished, adding acrylonitrile into a system to eliminate unreacted primary amine. The method of the invention can solve the technical problems of uncontrollable operation time of polyaspartic acid ester, residual primary amine in reaction products and the like in the prior art; and the multifunctional polyaspartic acid ester mixture has the advantages ofadjustable operation time, improvement of solvent resistance of a two-component polyurea/polyurethane coating and the like when used as a component of the coating.

The invention relates to the technical field of scale inhibitors, particularly relates to a phosphorus-free and environment-friendly novel composite scale inhibitor which has stable performance and can solve the problem that the traditional polyphosphate scale inhibitor is easy to hydrolyze and has a poor calcium sulfate scale inhibition effect, and specifically relates to a composite scale inhibitor and a preparation method thereof. The composite scale inhibitor comprises the following raw material components in parts by weight: 12-20 parts of an itaconic acid-polyaspartic acid copolymer, 12-18 parts of an ethylene glycol itaconic acid-acrylamide-2-methyl propanesulfonic acid-maleic acid copolymer, 2-8 parts of sulfamic acid, 8-15 parts of sodium hydroxide, 1-5 parts of a surfactant and 46-52 parts of water. The compound scale inhibitor is small in dosage, not prone to scaling after being used and high in scale inhibition rate, the itaconic acid-polyaspartic acid copolymer in the compound scale inhibitor has very high temperature resistance and has scale inhibition and corrosion inhibition effects, itaconic acid is inserted into polymer molecules, and therefore, the scale inhibition and removal performances of the compound scale inhibitor are greatly superior to those of polyphosphate scale inhibitors.

The invention discloses a food acidity regulator and a preparing method thereof. The food acidity regulator can be obtained through agitating and then drying propanoic acid, sulfuric acid, methanoic acid, fumaric acid, hydrochloric acid, maleic acid, sodium benzoate, grains, citric acid, water, aspergillus niger, hydroxysuccinic acid, calcium carbonate and auxiliaries. The melting point of the product is 100-120 DEG C, and 1g of the product is dissolved in 1.4-1.5ml of alcohol, 1.7-1.8ml of ether, 0.7-0.9ml of methanol and 2.3-2.5ml of propyl alcohol. The solubility in 5 DEG C water is 48-50g/100g, the solubility in 25 DEG C water is 58-60g/100g, the solubility in 75DEG C water is 80-90g/100g, and the heavy metal content is 0.0005-0.001%. The food acidity regulator is odorless, has strong chelating capability on metal ions, can be used as an antioxidant synergist, a pH buffering agent and a preservative, has soft and lasting sourness and is easily absorbed by the body.

The invention provides a method for producing maleic acid disooctyl sodium sulfonate. The method adopts maleic anhydride and isooctanol as raw materials and comprises the following steps: (1) by taking a halogen-containing strong-acidity resin and a sulfonic acid agent as catalysts, synthesizing maleic acid disooctyl; and (2) performing sulfonation by using a liquid sulfonation agent. By adoptingthe process method provided by the invention, the esterification reaction velocity can be increased, energy conservation and consumption reduction can be achieved, meanwhile, the chromaticity of a product can be reduced, the catalysts are easy to recycle and reuse, and the effective utilization rate of the sulfonation agent can be increased. The method is simple and easy to operate, is safe and environment-friendly and is good in permeability, stable in quality and easy in on-scale industrial production, and the chromaticity of the product is less than or equal to 20Hazen.

The invention discloses an epoxy resin carton adhesive. The epoxy resin carton adhesive is characterized by being prepared from the following raw materials in parts by weight: 10-12 parts of E-42 epoxy resin, 3-4 parts of methylene bis-cyclohexaneamine, 4-5 parts of 2,4-toluene diisocynate, 2-3 parts of maleic anhydride, 40-45 parts of ethyl acetate, 3-4 parts of dibutyltin dilaurate, 5-6 parts of acrylic acid, 3-4 parts of butadiene, 4-5 parts of styrene, 6-8 parts of diglycol, 1-2 parts of morpholine, 4-5 parts of acetone, 4-5 parts of chloroform, 2-3 parts of cyclohexanone peroxide, 3-4 parts of neopentyl glycol, 1-2 parts of catechol, and 2-3 parts of polyisobutene. The epoxy resin carton adhesive disclosed by the invention is good in adhesive property, excellent in stretching performance, peel resistance and ageing resistance, high in adhesive strength, and better in the comprehensive performances of heat resistance, ageing resistance, and the like.

The invention discloses ABS (acrylonitrile butadiene styrene) antibacterial plastic. The ABS antibacterial plastic comprises the following components in parts by mass: 200-208 parts of ABS, 8-9 parts of metastannic acid, 11-12 parts of antimonous oxide, 10-15 parts of ammonium polyphosphate, 10-15 parts of montmorillonite, 10 parts of magnesium salt crystal whiskers, 10 parts of cis-butenedioic acid acidified PP (propene polymer), 10-13 parts of wollastonite fibers, 5-7 parts of silver-loaded zirconium phosphate, 7-8 parts of copper-loaded zirconium phosphate and 8-10 parts of zinc oxide crystal whiskers. The prepared ABS antibacterial plastic has a good antibacterial function, an obvious antibacterial effect can be achieved with low dosage; meanwhile, mechanical strength of the plastic is not influenced, especially a thermal deformation temperature, a mechanical temperature and electrical insulation property of a plastic product are not reduced; the ABS antibacterial plastic is uniform in dispersion, good in weatherability and good in durability, so that the ABS antibacterial plastic has long-term antibacterial property.

The invention discloses a low-smoke halogen-free cold-tolerant-type flame-retardant thermoplastic elastomer and a preparation method thereof. The thermoplastic elastomer is used for solving the problems that the existing flame-retardant thermoplastic elastomer contains halogen and antimony and is poor in cold tolerance. The thermoplastic elastomer is characterized by being prepared from powdery cis-butadiene rubber, polyethylene resin, a ethylene-maleic anhydride copolymer, powdery butadiene-acrylonitrile rubber, zinc oxide, stearic acid, paraffin oil, polyethylene wax, sulfur, dicumyl peroxide, an accelerator, an anti-aging agent, an antioxidant, antistatic carbon black, epoxy silicone resin, aramid slurry meal, dioctyl sebacate, tricresyl phosphate, a halogen-free flame retardant, a silane coupling agent and an antistatic agent. The thermoplastic elastomer has the advantages that under the premise of having good mechanical properties and processing property, thermoplastic elastomer can be used at the environment of -60 DEG C in a long term and excellent flame retardant property and environment friendliness are achieved and is a good material for manufacturing products such as cold-retardant flame-retardant conveyor belts, transmission belts, hoses, cables, automotive sealing products and rail damping products.

The invention discloses an aging-resistant power cable, which comprises a conductor, an insulating layer, a shielding layer and a sheath layer. The insulating layer is arranged outside the conductor. The shielding layer is arranged outside the insulating layer. The sheath layer is arranged outside the shielding layer. The insulating layer is made of silicone rubber and the silicone rubber includes the following raw materials: vinyl-terminated methyl vinyl silicon rubber, low-phenyl silicone rubber, butenedioic acid propylene glycol polyester, dicumyl peroxide, active magnesia, styrene, butyl oleate, vinyl-terminated silicone oil, oxidized polyethylene wax, white carbon black, powder quartz, silicon carbide, silica powders, super fine active clay, modified hollow glass microspheres, silane coupling agent KH-902, calcium zinc stabilizer, HPG antioxidant, and 4010 NA antioxidant. The aging-resistant power cable is excellent in mechanical performance and excellent in aging resistance.