20 results about "Dimethylbenzenes" patented technology

The application discloses a kind of super-soft weather-resistant, fast solidification type polyurethane sealant and preparation method thereof, it is related to polyurethane sealant technical field, the sealant is obtained by mixing according to proportion by A component and B component;The A component is composed of modified polyurethane prepolymer, first plasticizer, dimethylbenzene, first filler, gamma-glycidyl ether oxygen propyl trimethoxysilane, water-removing agent and isocyanate curing agent;The B component is composed of second 3 functionality polyether polyol, second filler, second plasticizer, organic tin catalyst and delay catalyst;The modified polyurethane prepolymer is prepared by tackifying resin, terminal hydroxyl polybutadiene and first 3 functionality polyether polyol;The sealant of the application can realize stable bonding to neoprene and polyurethane base material, and shows excellent high and low temperature resistance and curing-operation balance performance, effectively solve the contradiction between the curing speed and operating performance of existing polyurethane sealant, improve product application practicability.

The application belongs to the field of paint, and particularly discloses PU white primer, a preparation method and application thereof. The PU white primer comprises A component, B component and C component. The A component comprises hydroxyl acrylic acid resin, castor oil, dispersing agent, defoaming agent, cyclohexanone, silicon dioxide, titanium white powder, talcum powder, calcium carbonate, butyl acetate, leveling agent, organic tin and propylene glycol methyl ether acetate. The B component comprises butyl acetate, HDI trimer and isocyanate prepolymer. The C component comprises dimethylbenzene, butyl acetate, propylene glycol methyl ether acetate and dimethyl carbonate. The PU white primer has the advantages of water resistance, high temperature resistance, adhesion, adhesion, hiding power and strong flexibility, and has superior comprehensive performance, is green and safe, low in cost, and is very suitable for being used as wood and stone surface primer in kitchens, bathrooms and the like.

The application provides a coating main agent, an anticorrosive coating and an anticorrosive coating layer and application, and the coating main agent is prepared from raw material components including modified epoxy resin, zinc powder, barium sulfate, talcum powder, n-butanol, dimethylbenzene and functionalized graphene; wherein the modified epoxy resin is an epoxy-polyether block copolymer; the coating prepared from the coating main agent can obtain a coating layer with different potentials through a composite coating method, so that a coating layer with a matching film thickness less than or equal to 200 mu m and excellent corrosion resistance is obtained, and the coating layer can be widely used for the corrosion protection of large steel structures such as offshore drilling platforms, offshore wind power and bridges.

The present application relates to a kind of toluene, methylating agent is obtained in the production method of paraxylene concentration greater than 80% of dimethylbenzene with water vapor as medium to promote reaction.The main problem is that in the existing toluene shape selective methylation fixed bed reaction process, hydrogen and / or nitrogen are used as carrier gas to promote the reaction, which causes high fixed equipment investment, high device material requirements and other problems.The present application solves the problem by shape selective methylation of toluene and methylating agent, adding water vapor instead of hydrogen and / or nitrogen as carrier gas as medium to promote the reaction, and the catalyst para-selectivity is 80-95%, the laboratory life can reach 1000 hours, which can better solve the problem.The method has the advantages of high product purity, no complex separation, simple operation, low fixed asset investment, low material consumption, etc., and can be used for the industrial production of paraxylene.

The application discloses a low-foam glass substrate cleaning solution, relates to the technical field of cleaning solutions, and comprises 25-40 parts by weight of dimethylbenzene, 20-35 parts by weight of propylene glycol methyl ether acetate, 10-20 parts by weight of n-butanol, 15-25 parts by weight of ethanol, 5-10 parts by weight of a wet dispersant and 1-4 parts by weight of an inhibitor; wherein the dimethylbenzene is alkyl-closed dimethylbenzene closed by alkyl; and the wet dispersant is a polydimethylsiloxane grafted / PLR-1900 wet dispersant. The application has the effect of significantly inhibiting foaming; the alkyl-closed dimethylbenzene in the application can effectively remove photoresist residues and grease, and cooperates with the wet dispersant to realize the effects of preventing contaminants from being re-stained and watermarks from being stained.

The application discloses a thin cold laminating material and a preparation process thereof, and belongs to the technical field of cold laminating materials. The thin cold laminating material comprises a base film layer, a release layer coated on the base film layer, an imaging layer coated on the release layer, an aluminum plating layer plated on the imaging layer, and a protective glue layer coated on the aluminum plating layer. The imaging layer raw material components comprise butanone, ethyl acetate, an imaging layer resin base, and color powder. The imaging layer resin base is obtained by copolymerization of methyl methacrylate, hydroxyethyl methacrylate, an unsaturated stabilizer tri (allylbenzene) imidazoline, and 2,4,6-tri (2-allylphenoxy) -1,3,5-triazine. The release layer raw material components comprise tetraethyl orthosilicate, octaphenylcyclo tetrasiloxane, tetra-vinyl tetramethyl cyclo tetrasiloxane, dimethyl siloxane mixed ring, n-heptane, and 3,5-di-tert-butyl salicylaldehyde. The protective glue layer comprises methyl methacrylate, hydroxyethyl methacrylate, butyl acrylate, dimethylbenzene, and glycidyl acrylate.

The application discloses a kind of cascade catalyst and its preparation method and preparation method of p-xylene, it is related to catalyst technical field.The cascade catalyst includes first layer catalyst and second layer catalyst that are arranged in cascade and mass ratio is 1: (0.1~10), first layer catalyst is copper doped ZnO-ZrO2, the mass percentage of Cu in first layer catalyst is 0.1-20 wt%;Second layer catalyst includes metal modified molecular sieve, and the modified metal element in metal modified molecular sieve includes at least one of Si, Zn and Ga, and the content of modified metal element is 1wt%~20wt%.The cascade catalyst provided by the application can be used as the catalyst for preparing p-xylene from CO2-rich synthesis gas and toluene after activation, can significantly improve CO, CO2 and toluene conversion rate, effectively inhibit the isomerization reaction of dimethylbenzene, improve the selectivity of target product p-xylene.

This invention relates to a lithium battery immersion cooling medium composition, its preparation method, and its application. The lithium battery immersion cooling medium composition comprises a base oil, a flame retardant, an antioxidant, and pentaerythritol ester; the base oil is a polyalphaolefin, and the flame retardant comprises 3.1-4.2 parts by weight of triisopropylphenyl phosphate, 1.7-3.9 parts by weight of trixylenol phosphate, 2.5-7.8 parts by weight of tert-butylphenyltriphenyl phosphate, 1.6-5.5 parts by weight of isodecyl diphenyl phosphate, and 3.2-6.7 parts by weight of triphenyl phosphate. This lithium battery immersion cooling medium composition maintains good flame retardant performance under low viscosity conditions, better meeting the requirements for lithium battery immersion cooling.

The application discloses a squalene-based rubber antioxidant and a preparation method thereof. The preparation method comprises the following steps: S1, dissolving squalene in an organic solvent, then adding m-chloroperbenzoic acid, and obtaining an epoxidized squalene solution after reaction; S2, adding an inorganic alkali solution into the above solution, separating and removing an aqueous phase, and then removing a solvent in an organic phase to obtain epoxidized squalene; S3, adding the epoxidized squalene into dimethylbenzene to dissolve, adding p-aminodiphenylamine and an organic amine catalyst, and heating in an inert gas atmosphere, and obtaining a squalene-based antioxidant solution after reaction, and finally removing the solvent and the catalyst to obtain the squalene-based rubber antioxidant. The prepared antioxidant has good compatibility with common non-polar rubber, has a plasticizing effect, is beneficial to rubber processing, can participate in a rubber vulcanization reaction, effectively reduces migration and precipitation of the antioxidant in a rubber product during storage and use, and effectively improves anti-aging performance of the rubber product.

The application discloses a preparation method of a high-emissivity super-black modified multi-level pore Y zeolite molecular thermal control coating, and belongs to the technical field of super-black materials. The coating comprises carbon black, a matting agent, a zeolite molecular sieve, a resin material, talcum powder, nano silicon dioxide, bentonite and dimethylbenzene. The hemispherical emissivity of the coating can reach 0.93-0.94, the coating has good matting performance and thermal cycle performance, and after 100 times of thermal cycles at a temperature of 100-100 DEG C under normal pressure, the coating has uniform appearance, no bubbles, no cracks, no peeling, and the hemispherical emissivity changes by not more than 0.02. Meanwhile, the adsorption amount of the coating to vacuum pollutant molecules reaches 198.4 mg.g ‑1 The coating has excellent space environment adaptability, and the preparation method is simple and easy to implement, and large-scale industrialized preparation can be easily realized.

The present application relates to the technical field of paint, and discloses an anticorrosive paint composition, which comprises component A and component B; the component A comprises the following raw materials: epoxy resin, isosorbide modified polypyridine, sericite powder, talcum powder, dispersing agent, defoaming agent, dimethylbenzene and n-butanol; the component B comprises the following raw materials: phosphate-based curing agent, accelerator DMP-30, dimethylbenzene and n-butanol; the isosorbide modified polypyridine and the phosphate-based curing agent are respectively involved in the preparation process of the component A and the component B of the paint, so that the prepared paint has excellent corrosion resistance, heat resistance and adhesion, significantly prolongs the service life of the coating, plays an excellent protective effect in the field of metal surface protection, and additionally endows the coating with antibacterial ability, so that the coating can meet the use requirements in various environments.

The application relates to the technical field of antistatic agents, and particularly discloses an oil antistatic agent and a preparation method thereof. The oil antistatic agent is prepared from the following raw materials: octadecylamine, modified AMPS, tetraethylammonium chloride, deionized water, double-modified polyether, dimethylbenzene, methanol, a low-temperature stabilizer and an initiator. The modified AMPS is obtained by modifying AMPS with a low-temperature modifier, and the low-temperature modifier comprises glycerol and urea. The double-modified polyether is a product obtained by modifying polyoxyethylene polyoxypropylene ether with ammonia gas and butanol. The antistatic agent has good low-temperature stability and can be well adapted to the oil storage and transportation scene in the winter of the northern alpine region.

The application discloses a preparation method of high-efficiency oil-based wax removal and prevention agent, which comprises uniformly mixing dimethylbenzene, straight-run gasoline, oil-soluble surfactant, rapid penetrating agent and nano-montmorillonite composite viscosity reducer to prepare the high-efficiency oil-based wax removal and prevention agent. The nano-montmorillonite composite viscosity reducer has long-chain oil-wet groups and sodium sulfate hydrophilic groups on the molecular structure, the structure of the oil-wet groups is similar to that of paraffin wax, the oil-wet groups can be eutectic with paraffin wax, the wax crystal cannot continue to grow, the hydrophilic groups stretch outside, hinder the combined paraffin wax with the three-dimensional network structure, and prevent the mutual adhesion of the wax crystals. The nano-montmorillonite can become the nucleation point of paraffin wax, change the structure and morphology of the wax crystal, increase the liquid oil flow space, and reduce the flow resistance of the crude oil, thereby playing the function of reducing the viscosity of the crude oil. The oil-soluble surfactant contains polyisobutylene structure, quaternary ammonium salt structure and aromatic hydrocarbon structure on the molecular structure, and the three structures are synergistic, so that the wax removal and prevention efficiency of the material is improved.

The application discloses a cold zinc spraying aerosol paint and a preparation method thereof. The cold zinc spraying aerosol paint comprises the following components in parts by mass: 40-70 parts of metal powder, 5-11 parts of film-forming resin, 20-40 parts of solvent, 0.3-1.0 parts of leveling agent, 0.3-0.8 parts of dispersing agent, and 0.4-01.2 parts of anti-settling agent. The metal powder comprises zinc powder. The film-forming resin is a compound of acrylic resin and epoxy resin. The solvent is a mixed solvent of dimethylbenzene and butanone. The leveling agent is poly (dimethylsiloxane) -graft-(perfluoro-2-methyl-2-propanol polyether). The product has excellent storage stability, construction performance and long-term corrosion resistance and durability.

The application discloses a kind of anti-carbon dioxide corrosion corrosion inhibitor and its preparation method and application, belong to oil and gas field corrosion protection technical field, the application provides a kind of corrosion inhibitor, its raw materials include, molar ratio is 1.0~1.2:0.8~1.2:1.2~2.0:1.0~1.4:1.0~1.4 of oleic acid, boric acid, dimethylbenzene, triethylene tetramine, carbonic acid dioctyl ester.It also provides its preparation method, according to molar ratio, take raw material, with oleic acid to obtain imidazoline intermediate by triethylene tetramine as raw material, again by carbonic acid dioctyl ester quaternary ammonium, preparation double ring imidazoline quaternary ammonium salt class corrosion inhibitor.It also provides the application of the corrosion inhibitor in the prevention of carbon dioxide corrosion.The corrosion inhibitor has good corrosion inhibition effect, simple preparation method, stable structure, and the corrosion inhibition effect is still superior in high salinity environment.

The application relates to an alcohol-based environment-friendly clean fuel and a preparation method thereof, and relates to the technical field of fuels.Taking weight parts as a basis, the alcohol-based environment-friendly clean fuel comprises the following components: 15-35 parts of methanol, 5-12 parts of ethanol, 2-5 parts of dimethylbenzene, 1-3 parts of benzene, 3-7 parts of 60-90 petroleum ether, 8-15 parts of a combustion improver, and 2-6 parts of an additive; the additive is prepared from oil and fat soap, polyoxoethylene sorbitan tetraoleate and Span 80; and the combustion improver is prepared from octanol, glycerol, isopropyl alcohol and acetone. By adding the specific additive and the specific combustion improver, the two are used in combination, the combustion stability of the alcohol-based environment-friendly clean fuel is improved, the combustion heat value of the alcohol-based environment-friendly clean fuel is improved, an alcohol-based environment-friendly clean fuel with stable combustion and high heat value is prepared, and the use demand in fields such as automobiles can be met.

The present application relates to the field of paraxylene production, and discloses a method for producing paraxylene and co-producing dimethylnaphthalene. The method comprises: separating C5 + raw materials to obtain C6, C7 and C8 + components; selectively performing hydrodealkylation reaction on the C8 + component to obtain C8 + product; performing aromatic hydrocarbon separation on the C8 + product to obtain C8 component, C9-C 10 component and C 10 + component; performing disproportionation and transalkylation reaction on at least part of the C9-C 10 component and the C7 component to obtain a product rich in dimethylbenzene; performing demethylation reaction on the C 10 + component to obtain C 10 -C 11 component and C 12 + component; performing transalkylation reaction on the C 10 -C 11 component and the remaining part of the C9-C 10 component to obtain a product rich in 2,6-dimethylnaphthalene. The method can realize high-value utilization of by-product naphthalene series and co-production of 2,6-dimethylnaphthalene.