48 results about "Dimethylbenzylamine" patented technology

A formulation for preparing a low density, full water blown polyurethane rigid foam includes an isocyanate component; an isocyanate-reactive component comprising from 30-50 wt % of a first polyether polyol having a functionality greater than 5 and an OH value from 350-550 mgKOH / g; from 5 to 25 wt % of a diol having an OH value from 100-300 mgKOH / g; and from 15 to 35 weight percent of a second polyether polyol having a functionality from 3 to 5; further including from 1.5 to 5 wt % of a catalyst selected from dimethylbenzylamine and / or 1,2-dimethyl-imidazole; from greater than 0 to 1 wt % of a trimerization catalyst selected from a glycine salt and / or tris(dimethyl aminomethyl) phenol; greater than 4.1 wt % water as a blowing agent; and any additional constituents selected such that the formulation, excluding the isocyanate component, totals 100 wt % and, the formulation absent the isocyanate component, has a dynamic viscosity from 540 to 864 mPa*s at 20° C. Processing under one-shot conditions can yield a rigid form having a molecular weight per crosslink ratio from 380 to 420. The formulation offers good processability, while the foam shows desirable dimensional stability and mechanical properties at unexpectedly low applied density.

The invention discloses a high performance modified polyurethane coating. The coating comprises isophorone diisocyanate, polytetramethylene ether glycol, alkynyl group-containing polyol, phenylboronic acid, trimethylol propane, N,N-dimethylbenzylamine, cerium hydroxide, acidified carbon nanotubes, organic modified montmorillonite, 2,3-dibromo tripropylborate, triethylamine, 3,3'-diamino-4,4'-dihydroxydiphenylsulphone, 1-sulfolane-3-ethoxycarbonyl-5-hydroxypyrazole, 1,4-bis(dimethylhydroxysily)benzene, a leveling agent, methylsilicone oil, a wetting agent, benzoic acid, propylene glycol, dihydroxyacetone, adipic dihydrazide, liquid styrene butadiene rubber, liquid nitrile butadiene rubber and water. The high performance modified polyurethane coating has the advantages of excellent flame retardation performance, high strength, good heat stability, strong adhesion to a substrate, and long service life.

The invention discloses a copper-clad plate reinforced by glass fiber cloth. The copper-clad plate comprises prepreg. The prepreg is obtained by soaking the glass fiber cloth in an epoxy resin adhesive and then dried. The epoxy resin adhesive is prepared from, by weight, 45-55 parts of dicyclopentadiene novolac epoxy resin, 15-25 parts of tetraphenol ethane epoxy resin, 0.3-3 parts of N,N-dimethylbenzylamine, 0.3-3 parts of zinc dioctanoate, 20-80 parts of ethyl acetate, 200-300 parts of high-dielectric-constant filler and 5-15 parts of fire retardant. The copper-clad plate is reinforced by the glass fiber cloth; through the reasonable matching, the types and amounts of the proper high-dielectric-constant filler and the proper fire retardant are preferentially selected, the dielectric constant, flame retardance and stripping strength are improved, comprehensive performance is quite excellent, the filler dispersing effect is good, cost is low, and the copper-clad plate is environmentally friendly and economical.

A preparation method of ethyl 6,8-dichlorooctanoate belongs to the technical field of preparation of organic compound intermediates. It uses N,N-dimethylbenzylamine as an acid-binding agent, first reacts 6-hydroxy-8-chlorooctanoic acid ethyl ester with a chlorination reagent in an organic solvent, and controls the reaction temperature, heats it after the reaction, and Control the heat preservation temperature and control the heat preservation time to obtain the reaction solution, add water to the layer, the upper layer is the organic phase, and rectify under reduced pressure to obtain 6,8-dichlorooctanoic acid ethyl ester, the lower layer is added with alkali to adjust the pH layer, and the upper layer is separated by Yuanming The powder is dehydrated to obtain N,N-dimethylbenzylamine for reuse. The chlorination ability is improved, the yield reaches about 95%, recycling is realized, waste water discharge is reduced, the process route is advanced, the process conditions are reasonable, the operation is simple and safe, the reaction yield is high, the production cost is low, and the three wastes are small.

The invention relates to a method of preparing a surfactant by alkali lignin by modification, belonging to the technical field of lignin utilization. The method comprises the following steps: by taking waste alkali lignin in industrial production as a raw material, first, carrying out reaction with dodecyl glycidyl ether and N, N-dimethylbenzylamine in dimethylsulfoxide; and then carrying out reaction with chlorosulfonic acid and neutralizing and dialyzing the product to obtain the alkali surfactant. According to the method provided by the invention, waste alkali lignin in industrial production is effectively utilized to facilitate the environmental protection, and meanwhile, the reaction conditions are mild without high temperature and high pressure conditions, and the reaction conditions are easy to control and adjust, so that the reaction process is simple, the production equipment is relatively simple, the product is low in cost, and the method has a very good industrial application prospect. The surface tension of the lignin surfactant prepared by the method reaches 29.17mN / m, thereby satisfying the active demands on industrial production and daily washing.

The invention discloses a cathode electrophoresis paint with high outdoor weather resistance. The cathode electrophoresis paint is characterized by being prepared from the following raw materials in parts by weight: 30-35 parts of epoxy resins, 18-26 parts of methylated amino resins, 4-7 parts of dimethylbenzylamine, 5-8 parts of maleic anhydride, 12-15 parts of isobutyl alcohol, 7-9 parts of butyl acrylate, 8-11 parts of ethoxyl metacrylic acid ester phosphate, 0.3-0.7 part of sodium antimonite, 1-2 parts of nano aluminum nitride, 13-17 parts of carbon black, 3-6 parts of graphite particles, 2-4 parts of expanded perlite, 2.1-3.5 parts of carboxymethylcellulose, 6-9 parts of ethylene propylene rubbers, 1.2-2.5 parts of silane coupling agents KH560, 12-16 parts of auxiliaries, 16-20 parts of ethylene glycol monoethyl ether acetate, 8-11 parts of propylene glycol monomethyl ether and 55-65 parts of deionized water. The cathode electrophoresis paint is scientific and reasonable in proportioning; epoxy resins and methylated amino resins are subjected to graft modification and are added into the raw materials, and other effective components are used at the same time, so that the prepared cathode electrophoresis paint has the advantages of high weather resistance, high coating luster, high modification property, security, environmental friendliness and the like; by utilizing the prepared coated object, the high weather resistance can be maintained under a poor outdoor environment, so that a higher requirement on coating performance can be met.

The invention discloses a thermal-insulation material for prefabricated building exterior walls. The thermal-insulation material is prepared from 100 parts by mass of a composite material and 120-140 parts of a curing agent through reacting and foaming, wherein the composite material is prepared from the following components in parts by mass: 85 to 100 parts of ordinary Portland cement, 55 to 62 parts of slag Portland cement, 6 to 9 parts of fly ash, 14 to 18 parts of expanded perlite, 16 to 24 parts of polypropylene fiber, 0.8 to1.5 parts of ash calcium powder, 40 to 55 parts of melamine formaldehyde resin, 48 to 54 parts of a polyurethane oligomer, 4 to 6 parts of polyacrylamide, 38 to 42 parts of sodium bicarbonate, 15 to 22 parts of a phosphorus-containing flame retardant and 1.1 to 1.4 parts of N, N-dimethylbenzylamine, wherein the curing agent is toluene diisocyanate. The thermal-insulation material has the advantages of being low in thermal conductivity, high in cracking resistance, deformation-free and cracking-free and can be applied to exterior wall external insulation of building energy-saving projects.

The invention discloses a pig manure deodorant. The pig manure deodorant comprises the following substances by mass: 0.5 to 1 part of alkylbenzyldimethylammonium chloride, 10 to 20 parts of ethylene glycol, 3 to 5 parts of citric acid diethyl ester and 40 to 60 parts of ethanol, with the balance being deionized water. The deodorant provided by the invention can effectively remove smelly substances in pig manure and has a sterilizing function, thereby guaranteeing the living environment of pigs to a certain extent while removing the stink of the manure. The deodorant has the advantages of easy availability of raw materials, producibility and low use cost.

The invention discloses an insulation polyurethane acrylate plastic paint and a preparation method thereof. The insulation polyurethane acrylate plastic paint comprises the following components: by weight, 20-30 parts of polyurethane acrylate, 5-8 parts of a photosensitizer, 5-10 parts of a sensitizer, 10-20 parts of stabilizers, 2-3 parts of calcium sulfite, 1-2 parts of benzophenone, 2-8 parts of N,N-dimethylbenzylamine, 5-14 parts of 2-trans-3,7-dimethyl-2,6- octadiene-1-ol, 6-12 parts of dimethyl distearylammonium chloride, 1-2 parts of aluminum chloride hexahydrate, 10-12 parts of acrylonitrile-butadiene-styrene and 1-13 parts of methacrylic acid. The insulation polyurethane acrylate plastic paint has the advantages of low cost, good insulation properties, low content and low toxicity of volatile matter, low high-temperature dielectric loss, good stability and good resistance properties.

The invention relates to an adamantane-containing quaternary ammonium salt ionic liquid and a preparation method thereof. The structural formula of the adamantane-containing quaternary ammonium salt ionic liquid designed and prepared by the invention is shown in the specification, and in the formula, n is equal to 6, 9 or 11. According to the adamantane-containing quaternary ammonium salt ionic liquid disclosed by the invention, 1-adamantanecarboxylic acid is used as a raw material, and the ionic liquid is prepared by the following three steps: firstly, carrying out acylating chlorination reaction on 1-adamantanecarboxylic acid and thionyl chloride to synthesize 1-adamantanecarbonyl chloride, carrying out esterification reaction on the 1-adamantanecarbonyl chloride and OH(CH2)nBr, and thencarrying out quaternization with N,N-dimethylbenzylamine to form the adamantane-containing quaternary ammonium salt ionic liquid. The adamantane-containing quaternary ammonium salt ionic liquid obtained in the invention has the characteristics of mild reaction conditions, easily available raw materials and high product purity, and has potential application prospects in the fields of supramolecular chemistry, catalysis, batteries, nano materials and the like.

The invention discloses a method for preparing and recovering recyclable epoxy asphalt, and relates to a method for preparing and recovering epoxy asphalt. 75-90 parts of base asphalt is heated to a fluid state, and 50-70 parts of maleic anhydride and 0.1-0.5 parts of 2,4,7,9-tetramethyl-5-decyne-4,7-diol are added to react to obtain Component A; mix 90-110 parts of furan-containing difunctional epoxy oligomer with 2-10 parts of N,N-dimethylbenzylamine to obtain component B; take 140-160 parts of A-component and 90-120 parts B component; B component is preheated at 60-80°C and stirred evenly when A component is cooled to the same temperature; the blend is solidified to obtain recyclable epoxy asphalt. The epoxy asphalt at the end of the use period is heated to a fluid state at 120°C; add regenerant and stir thoroughly; recure at 70°C for 24 hours to obtain recycled epoxy asphalt. Based on the reversible principle of dynamic covalent bonds, an epoxy asphalt that can be recycled based on the temperature regulation mechanism was prepared.

A formulation for preparing a low density, full water blown polyurethane rigid foam includes an isocyanate component; an isocyanate-reactive component comprising from 30-50 wt % of a first polyether polyol having a functionality greater than 5 and an OH value from 350-550 mgKOH / g; from 5 to 25 wt % of a diol having an OH value from 100-300 mgKOH / g; and from 15 to 35 weight percent of a second polyether polyol having a functionality from 3 to 5; further including from 1.5 to 5 wt % of a catalyst selected from dimethylbenzylamine and / or 1,2-dimethyl-imidazole; from greater than 0 to 1 wt % of a trimerization catalyst selected from a glycine salt and / or tris(dimethyl aminomethyl) phenol; greater than 4.1 wt % water as a blowing agent; and any additional constituents selected such that the formulation, excluding the isocyanate component, totals 100 wt % and, the formulation absent the isocyanate component, has a dynamic viscosity from 540 to 864 mPa*s at 20° C. Processing under one-shot conditions can yield a rigid form having a molecular weight per crosslink ratio from 380 to 420. The formulation offers good processability, while the foam shows desirable dimensional stability and mechanical properties at unexpectedly low applied density.

The invention provides a process for preparing 4-amino-N,N-dimethylbenzylamine. The process comprises the steps of: (1) adding solutions of 4-nitro benzyl bromide or 4-nitro benzyl bromide in an organic solvent in batches into an organic solvent containing dimethylamine and triethylamine to obtain 4-nitryl-N,N-dimethylbenzylamine, wherein the single batch feeding amount of 4-nitro benzyl bromide and the molar percentage of dimethylamine in the reaction system are smaller than 7 percent; (2) reducing 4-nityl-N,N-dimethylbenzylamine by using a reducing agent to obtain 4-amino-N,N-dimethylbenzylamine. According to the process, the side reaction mechanism and the effective control method of a new impurity bis(nitrobenzyl)-dimethyl ammonium bromide are studied, the reaction conditions are optimized, the entire process is simple and easily implemented, and the purity and yield of the product are high; and the process is suitable for industrial production.