31 results about "Propylene dichloride" patented technology

The process of producing logistic tray with waste plastics relates to utilization of waste plastics. Waste polyethylene and polypropylene plastics are produced into logistic tray through the steps of washing, drying, sorting, crushing, adding modifier and injection molding. The modifier comprises propylene dichloride resin, calcium carbonate, stearate and surfactant polyethylene glycol. The present invention produces logistic tray with waste plastic completely and is environment friendly, and the produced logistic tray has high strength, durable and with less deformation.

The invention provides a technology for preparing epoxypropane from propylene chlorohydrin through a single acid process. According to the invention, firstly, chlorine reacts with water so as to generate hypochlorous acid and hydrogen chloride, and hydrogen chloride is removed with calcium carbonate before the propylene chlorohydrin reaction, so that chlorine and propylene are prevented from coming into contact with each other to generate propylene dichloride and chloropropanol and hydrogen chloride are prevented from coming into contact with each other to generate propylene dichloride. Propylene and chlorine are added. According to the invention, the yield of epoxypropane can be obviously increased. According to the invention, only epoxypropane is distilled in a saponification distillation process, the operation of steam stripping for propylene dichloride is not required and the energy consumption can be obviously reduced. Calcium chloride in saponification wastewater is converted into sodium chloride and calcium carbonate under the effect of sodium carbonate; the calcium carbonate is reused for removing hydrogen chloride generated from hypochlorous acid reaction or preparing calcium carbonate commodity; the saponification wastewater containing sodium chloride is used for electrolysis alkali preparation or evaporation concentration and membrane separation concentration so as to acquire industrial sodium chloride.

Disclosed is a preparation method of 2-acetoxyl group methoxy group-1.3-propylene dichloride. The following substances are extracted according to weight ratio: 250kg of 1.3-dichloro-2-propyl alcohol, 60kg of paraformaldehyde, 3.68kg of vitriol, 250kg of acetic anhydride and 5kg of potassium acetate; the 1.3-dichloro-2-propyl alcohol, the paraformaldehyde and the vitriol are added to a clean and dry reaction still and are warmed slowly, the temperature rises to 96 DEG C to 98 DEG C in 2 hours, and heat preservation is carried out for 2 hours; the temperature is lowered to 10 DEG C after heat preservation, the acetic anhydride is dropped to the reaction still, and the temperature is kept between 15 DEG C and 20 DEG C; after the acetic anhydride is added, the temperature rises to 35 DEG C to 40 DEG C, and heat preservation is carried out for 10 hours; the potassium acetate is added to the reaction still, stirring is conducted, the acetic anhydride is recycled in vacuum to 100 DEG C, the temperature is lowered to 20 DEG C, and filtering is conducted; and filter liquor is pumped into a rectifying still, steamed cut fraction in a state of 115 DEG C/10mmHg is collected, and the 2-acetoxyl group methoxy group-1.3-propylene dichloride with 80% of weight yield and more than or equal to 95% of content is obtained. According to the preparation method of the 2-acetoxyl group methoxy group-1.3-propylene dichloride, production cost is reduced, and yield is improved.

The invention relates to an industrial device and a continuous rectification method for extracting 1,2-propylene dichloride from chlorohydrin process epoxypropane waste liquid. The method comprises the following steps: rectifying the epoxypropane waste liquid, condensing stage by stage, rectifying, condensing, and separating to obtain 1,2-propylene dichloride. The method has the advantages that obtained 1,2-propylene dichloride is colorless, transparent and free of pungent smell and has the purity of 95%-99% by weight and the yield of 90%-95%, and equipment corrosion is avoided. According to the continuous rectification process, an azeotropic agent-water does not need to be added, so that the problem of equipment corrosion is avoided; meanwhile, the rectification process is continuously carried out, so that the production efficiency is high and the product quality is stable; moreover, the rectification process can be continuously carried out along with the industrial device for epoxypropane production by adopting the chlorohydrin process, so that the discharge amount of the epoxypropane waste liquid is greatly reduced and the economic benefits of enterprises are increased.

The invention discloses a supported catalyst for preparation of 1, 2-propane diamine through catalysis. The 1, 2-propane diamine is prepared by a method comprising main synthesis steps of adding 1, 2-propylene dichloride, ammonia water, and the supported catalyst into a reaction kettle; rotating the reaction kettle in a homogeneous phase reactor at constant speed; carrying out amination at reaction temperature of 140 DEG C-170 DEG C so as to prepare the 1, 2-propane diamine, wherein the yield of the 1, 2-propane diamine is more than 65%; and after reaction, firstly removing unreacted ammonia gas, and then distilling at normal pressure so as to obtain a 1, 2-propane diamine aqueous solution. The supported catalyst has the advantages that the yield of the 1, 2-propane diamine prepared by catalysis of the supported catalyst is relatively high; the byproduct 1, 2-propylene dichloride generated in production of chloropropene is taken as the raw material, so that the production cost is greatly lowered; the reaction process is simple, the operation is convenient; the method is safe and environment-friendly and is beneficial to industrial production.

The invention discloses a reactive dye color fixing agent and a preparation method thereof. The color fixing agent is prepared from the following raw materials in parts by weight: 41-49 parts of bisphenol S, 5-13 parts of propylene dichloride, 10-18 parts of dimethyl formamide, 17-25 parts of dimethyl sulfoxide, 3-7 parts of fatty alcohol-polyoxyethylene ether and 13-21 parts of dichloroacetic acid. The preparation method comprises the steps of mixing the bisphenol S with the dimethyl sulfoxide and the dimethyl formamide, heating and stirring an obtained mixture; then, adding a fatty alcohol-polyoxyethylene ether solution, heating and stirring; after that, adding the propylene dichloride, heating and stirring; dropwise adding a dichloroacetic acid solution, heating and stirring, and cooling to the room temperature to obtain the reactive dye color fixing agent. The color fixing agent prepared by the method has the advantages of being high in dyeing fastness, capable of obviously improving dry-wet rubbing fastness and color fastness to washing, and the like under the interaction of all the raw materials, and enables reactive dyes basically not to have color change when being used for carrying out color fixation on the reactive dyes; furthermore, the reactive dye color fixing agent is formaldehyde-free, environment-friendly, free from secondary pollution, simple in production technology, suitable for industrial production and especially suitable for the field of color fixation of the reactive dyes.

The invention provides an environment-friendly energy-saving cleaning agent. The cleaning agent is prepared from, by weight, 20-70 parts of propylene dichloride and 30-80 parts of tetrachloroethylene. The preparation method of the environment-friendly energy-saving cleaning agent comprises the steps of mixing and uniformly stirring substances in the formula at the normal temperature. Previous trichloro ethylene is replaced with the cleaning agent, and compared with the previous trichloro ethylene, the cleaning agent is higher in durability, low in smell, free of toxicity, applicable to low temperature, low in volatility, simple in process and suitable for mass production.

The invention discloses an anti-rusting and anticorrosive finish coat for steel and iron and a preparation method thereof. Xylene, polystyrene, butyl acrylate, ethyl acetate, propylene glycol, titanium pigment, barium sulfate, propylene dichloride, trimethylolpropane, phthalic anhydride, butanol, styrene, benzoyl peroxide and tricresyl phosphate are weighed and taken; the raw materials are agitated, and then are ground, so as to prepare the anti-rusting and anticorrosive finish coat for the steel and the iron. A paint film is uniform and bright in appearance, has water resistance lasting for 1 to 5 months, viscosity of 20s to 60s, flexibility of 1mm to 3mm, adhesive force of level 1, ageing resistance lasting for 60d to 80d, shock strength of 55kg/cm to 95kg/cm, fineness of 12 to 16 microns, solid content of 42 to 48 percent, surface drying time of 10h to 14h and actual drying time of 16h to 20h; the anti-rusting and anticorrosive finish coat for the steel and the iron can be widely produced and used for continually replacing existing materials.

The invention discloses a fuel oil additive mixture, which is composed of the following formula components by mass percentage: 20-50 parts of triethylamine, 30-50 parts of ethylene glycol, 30-50 parts of ethylenediamine, 15-50 parts of acetone, 20-40 parts of ethyl acetate, 30-40 parts of isooctyl nitrate, 20-40 parts of nano-iron oxide, 30-50 parts of glyceryl monooleate, 10-30 parts of palmitic acid, 5-10 parts of carbon tetrachloride, and 10-30 parts of propylene dichloride. The fuel oil additive mixture provided by the invention can clear carbon deposit, clean the fuel oil system, enhance the power performance, improve atomization, save fuel oil, prevent corrosion, prevent rust and lubricate, protect the engine, reduce noise, reduce wear, prolong the engine life, eliminate black smoke, and lower emission.

The invention relates to an antiseptic paint for an inner wall of an automotive water tank and a preparation method of the antiseptic paint. The antiseptic paint is mainly prepared from the following components: dibutyl phthalate, a TGIC (triglycidyl isocyanurate) curing agent, diacyloxyheptane dibutyltin, borax, ammonium polyphosphate temperature-resistant aid, acidic oxidant, a sand ripple agent, fumed silica, transparent zinc oxide, asbestos powder, nanosilicon dioxide, chlorinated rubber, titanium dioxide, talcum powder, barium sulfate, an anti-settling agent, a defoaming agent, pigments, titanium white powder, bamboo shoots, water, smoked plum, radix astragali seu hedysari, poria cocos, fritillary bulb, fructus aurantii, radix angelicae sinensis, sodium tripolyphosphate, hydrolytic polymaleic anhydride, sodium xylene sulfonate, alkylphenol polyoxyethylene, ethylene glycol monoethyl ether condensate, methylene dichloride, methylene trichloride, propylene dichloride, phenol, methanoic acid, hydrofluoric acid and paraffin. The paint prepared by adopting the preparation method is free from extraneous odor, has the formaldehyde content far lower than the national standards, releases a unique aroma at the same time, is suitable for use in household appliances and furniture, has high high-temperature resistance and cold resistance, and effectively overcomes the defects of an existing paint.

The invention discloses an antioxidant corrosion inhibitor. The antioxidant corrosion inhibitor is prepared through the steps of charging dicyanodiamine, a catalyst and zeolite into a reaction kettleand adding propylene dichloride to obtain an intermediate body; pasting starch, adding acrylamide, and continuously adding an initiating agent in the mixing process to obtain a copolymer; and chargingthe intermediate body, the copolymer, benzotriazole, sulfide and silicate into the reaction kettle in sequence to be fixed and then cooled to the indoor temperature to obtain the antioxidant corrosion inhibitor. Through the antioxidant corrosion inhibitor, a compact and firm protective film can be formed on the surfaces of oil gas equipment and a gathering transport pipeline in a moist high-temperature environment, and corrosion of a sewage medium to the oil gas equipment and the gathering transport pipeline is effectively prevented. The antioxidant corrosion inhibitor has the excellent high-temperature antioxidant performance.

The invention discloses a paint remover capable of rapidly removing paint. The paint remover comprises in parts by weight, 25 parts of dichloromethane, 30 parts of trichloromethane, 10 parts of propylene dichloride, 7 parts of paraffin, 15 parts of phenol, 10 parts of glycerin, 11 parts of eucalyptus oil and 15 parts of formic acid. The paint remover is simple in raw material, low in cost and toxicity, rapid in paint removing speed, good in effect and can be used for removing coatings of epoxy resin paint and organic silicon and amino baking paint.

The invention discloses a method for synthesizing 1,2-propane diamine. The method takes 1,2-propylene dichloride as a raw material and specifically comprises the following steps: (1) feeding a catalyst, a solvent water and 1,2-propylene dichloride into a high-pressure reaction kettle, and closing the high-pressure kettle; (2) introducing liquid ammonia into the reaction kettle; and (3) rapidly raising the temperature to be 160-180 DEG C, keeping the temperature to react for 250-300 minutes, cooling to be the room temperature, and slowly discharging redundant ammonia gas to be recycled within longer than 10 hours. The method is economic and environment-friendly, the utilization rate of 1,2-propylene dichloride is improved, the yield of the 1,2-propane diamine is improved, the cost is saved, and the emission of pollutant is reduced.

The invention provides a paint thinner. The paint thinner is characterized by being prepared from, by weight, 20-30 parts of propylene dichloride, 12-16 parts of n-butyl acetate, 5-15 parts of butanone, 15-20 parts of ethyl acetate, 13-17 parts of ethyl butyrate, 3-7 parts of silicone oil, 10-15 parts of dodecyl phosphate salt and 1-5 parts of glycerinum. The paint thinner has the advantages of being convenient to use, low in cost and harmless to the human body.

The invention discloses a cleaning agent for live electrical equipment whose constituents by weight percentage are, propylene dichloride 95-99.5%, dimethicone 0.5-5%.

The invention discloses an organosilicon-aluminum powder corrosion inhibitor preparation method, an organosilicon-aluminum powder corrosion inhibitor and application of the organosilicon-aluminum powder corrosion inhibitor. The preparation method includes (1), preparing a cellulose acetate precursor from cellulose acetate butyrate, propylene dichloride, acetic ether and ethylene glycol; (2), preparing organosilicon heat-resistant aluminum paint from organosilicon-modified acrylic resin, hydroxy acrylic resin, the cellulose acetate precursor, an adhesion promoter, nano-montmorillonite, aluminum paste and butyl acetate; (3), mixing the organosilicon heat-resistant aluminum paint with a curing agent so as to obtain the organosilicon-aluminum powder corrosion inhibitor. The organosilicon-aluminum powder corrosion inhibitor is high in operating temperature and good in anticorrosion effect and can be particularly applied to atmospheric corrosion protection of steel 91/P91 of power station boiler pipes.

The invention relates to a preparation method of multielement alcohol amine and belongs to the technical field of organic chemicals. The preparation method comprises the following step: continuously-flowing propylene dichloride and alcohol amine added stepwise react on a solid catalyst on design equipment to synthesize the multielement alcohol amine. The invention provides a deep processing methodof the propylene dichloride, and the problem that other application ways of the propylene dichloride pollute the environment is solved, the used catalyst can be regenerated and repeatedly used, therefore, the deep processing method belongs to a pollution-free chemical process; the preparation method of the multielement alcohol amine provided by the invention has the advantages of mild condition,low operation cost, high production efficiency and flexible functionality adjustment of multielement alcohol amine, and is suitable for industrial production.

The invention relates to a powerful metal adhesive. The powerful metal adhesive is prepared from the following components: chloroprene rubber, styrene, waterborne polyurethane resin, liquid paraffin, methylbenzene, dimethyl carbonate, propylene dichloride, methyl methacrylate, alkylphenol polyoxyethylene ether sodium sulfate and organic tin catalysts. Through experiments, the special waterborne polyurethane resin can be replaced, so that the adhesion properties such as viscosity and peeling strength and the like of the adhesive are greatly improved; the powerful metal adhesive has obvious effect and broad market prospects.