519 results about "1-Chloropropane" patented technology

The invention relates to epoxy resin polymer mortar and a production process thereof. The mortar is prepared from the following components in parts by weight: 15-20 parts of epoxy resin slurry, 2-4 parts of an active diluent, 6-8 parts of a curing mixture and 70-80 parts of a base material which are mixed, stirred and mixed, wherein the epoxy resin slurry is prepared from bisphenol A epoxy resin E51, modified epoxy resin, organic bentonite and dioctyl phthalate; the active diluent is prepared from epoxy chloropropane, fatty alcohol and trichloropropane; the curing mixture is prepared from 85 parts of modified phenolic aldehyde amine, hydroxy-terminated liquid nitrile rubber, 2-(3, 4-expoy cyclohexyl) ethyl triethoxyl silane, lauryl phenylacetate and resorcinol; the base material is prepared from ordinary portland cement, quartz sands, hydrophobic expanded perlite, refined graphite powder and sericite powder. The epoxy resin polymer mortar provided by the invention not only has excellent mechanical property and wear resistance, but also has a good adhesive performance, and can be integrally formed with substrate concrete.

The invention relates to a method for processing high-salinity organic wastewater generated in a saponification cyclization procedure in a process of producing epoxy chloropropane by using glycerol as material. The processing method comprises the following steps: firstly carrying out four-effect evaporation on the high-salinity organic wastewater to obtain concentrated salt slurry; then dewatering and centrifugally separating the concentrated salt slurry to obtain sodium chloride solid; conveying mother liquor with high glycerin content to a glycerin refining unit to be used as the material, condensing and recovering wastewater vapor. The method and a device for processing wastewater disclosed by the invention are simple, easy to operate and control, high in efficiency and obvious in economic benefit, not only can effectively process industrial wastewater to be up to the national emission standard, but also can effectively recover sodium chloride in the wastewater, and create a new profit growth point for an enterprise.

This invention discloses a glycerol method for preparing epoxy chloropropane. The method comprises: (1) introducing dried HCl gas through 95% glycerol at 90-110 deg.C in the presence of absolute acetic acid, and reacting for 1-3 h; (2) adding the obtained dichloropropanol into a round bottom flask loaded with solid super-strong alkali catalyst, equipping condensing and drying tubes, stirring, heating to 70-90 deg.C, reacting for 3-5 h, filtering, and separating the catalyst to obtain chloropropane.

A method of producing a chlorinated hydrocarbon having 3 carbon atoms, comprising a conversion step for converting a chloropropane represented by the following formula (1) into a chloropropane represented by the following formula (2) by reacting it with chlorine in the presence of anhydrous aluminum chloride.

CCl₃—CCl_(2-m)H_m—CCl_(3-n)H_n  (1)

(In the above formula (1), m is 1 or 2, and n is an integer of 0 to 3.)

CCl₃—CCl_(3-m)H_(m-1)—CCl_(3-n)H_n  (2)

(In the above formula (2), m and n are the same integers as in the formula (1), respectively.)

The invention relates to a treatment method for high-salinity organic wastewater generated in a production process of epoxy chloropropane from glycerol. The treatment method comprises the steps of: performing hydrolysis reaction on the high-salinity organic wastewater; performing advanced oxidization or wet oxidization; and concentrating and drying. The method is simple and convenient in process flow, easy to operate and control, and environment-friendly; inorganic precipitates in the wastewater can be recovered for producing building materials; organic chlorine-containing compounds in the wastewater are decomposed into glycerol, and the decomposition rate is up to more than 95%; two major pollutants in the wastewater, namely, calcium chloride and glycerol, are utilized for generating an environment-friendly snow-melting agent, so that the pollutant resource recovery is realized. Organic pollutants in the wastewater generated in the advanced oxidization or wet oxidization can be mineralized; calcium chloride in the wastewater is utilized for producing industrial calcium chloride. The treatment method has the beneficial effect that 'zero release' of the wastewater generated in a cyclization step in the production process of epoxy chloropropane from glycerol can be realized.

The invention relates to a preparation method for cationic-type activated carbon. The preparation method comprises the steps of washing, drying and crushing activated carbon, and oxidizing the activated carbon by concentrated hydrochloric acid or sulfuric acid so that the surface of the activated carbon has hydroxy; heating to the temperature of 80-87 DEG C under the condition of water bath, then adding epoxy chloropropane and N-N dimethylformamide, and stirring and reacting for 0.5-1.5h; and adding ethanediamine to react for 1-1.5h, then continuously dripping triethylamine to react for 0.5-1h, cooling to room temperature, and washing and drying so as to obtain the cationic-type activated carbon. An activated carbon product is the cationic-type activated carbon with positive charges, has a cationic group and a hydroxyl group, further has biodegradability, and is applicable to removing anionic-type pollutants in water.

The embodiment of the invention discloses a CMC starch glue which comprises the following components in percentage by mass: 6-8% of corn starch, 5-8% of sodium hydroxide (30% of solution), 0.5-2% of hydrogen peroxide (30% of solution), 0.3-1% of borax, 6-12% of epoxy chloropropane, 0.05-0.2% of sodium carboxymethylcellulose and the balance of water, totaling 100%. By adding sodium carboxymethylcellulose to consume redundant water and forming high polymers by virtue of hydroxylation reaction during starch dextrinization, the initial adhesive force and quick dryness of the starch glue are improved.

The invention provides a method and a system of the method for synthesizing epoxy chloropropane by dichloropropanol. By utilizing the method and the system, the defect that a large number of wastewater is generated by a steam direct heating steam stripping saponification method is overcome. The method comprises the following steps that: an indirect heating circulation injection saponification reactor is adopted; dichlorohydrin, alkali and circulation saponification liquid enter a kettle body through an outer circulation pump for cyclization reaction to generate the epoxy chloropropane; azeotrope formed by the generated epoxy chloropropane and water is instantly steamed from the top of the kettle body; the azeotrope enters into an oil-water separator after being condensed as an oil layer is crude epoxy chloropropane; a part of a water layer flows back to the saponification reactor; a part of the water layer enters into a water-phase steam stripping tower; the epoxy chloropropane flowing out from the top of the steam stripping tower is subjected to heat exchange with the saponification liquid for condensing; the epoxy chloropropane flows back to the oil-water separator after being condensed so as to recover the epoxy chloropropane in water phase; steam stripping tower residual liquid of the epoxy chloropropane is removed, wherein a part of the residual liquid is used for preparing alkali liquid and a part of the residual liquid is discharged; and salty mud generated in the kettle body is settled to a swinging filter machine from the bottom of saponification reactor, wherein filter residue is recovery salt, and filter liquid is saponification waste liquid.

The invention discloses a cationic electromigration imidazoline quaternary ammonium salt which is prepared by the following steps: (1) synthesizing imidazoline from C5-C18 fatty acid and diethylenetriamine; and (2) carrying out cationization reaction on the imidazoline and quaternizing reagent (comprising sodium monochloroacetate, epoxy chloropropane, epoxyethane, chloroacetic acid ethanol ammonium salt and sodium 3-chloro-2-hydroxypropyl sulfonate) in a mol ratio of 1:(1.0-1.2) at 70-90 DEG C under the condition of the pH value 3-4 for 6-8 hours, thereby obtaining the cationic electromigration imidazoline quaternary ammonium salt. When being used in a concrete reinforcing bar corrosion inhibitor, the cationic electromigration imidazoline quaternary ammonium salt can be used for reinforcing bar restoration in new concrete structures and built concrete structures. The restoration belongs to nondestructive restoration, and has the advantages of high migration rate and environment friendliness.

A convenient and economical process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane (HCFC-243) by the reaction of 1,1,1,3,3-pentachloropropane (HCC-240) with hydrogen fluoride in the presence of an activated hydrofluorination catalyst. Also, the selective fluorination of hydrochlorocarbons and/or hydrochlorofluorocarbons, or mixtures thereof is shown. A HCFC-243 reaction product yield of greater than 40% is obtained.

The invention discloses a preparation method and application technology of an epoxy chloropropane modified flax adsorbent. The preparation method is characterized by washing waste short fiber flax of a flax textile factory by using water, drying and crushing; processing by using NaOH and OP water solution and drying to obtain degummed flax; adding the following components in percentage by mass in a reactor: 22-40% of epoxy chloropropane, 12-25% of degummed flax, 4-8% of NaOH, 5-10% of isopropyl alcohol and 32-55% of water, wherein the sum of all the components is 100%; stirring at the constant temperature of 55-65 DEG C, carrying out backflow reaction for 1.0-4h, cooling, washing by using de-ionized water, carrying out suction extracting and filtering until the filtrate is neutral, washing by using a small amount of ethanol, drying in a 50-55 DEG C vacuum drying box, so as to obtain the epoxy chloropropane modified flax. The adsorbent has very high adsorbing capacity to basic dye, has high regeneration property, can be used repeatedly for several times, and is low in cost and environment-friendly.

The invention provides a preparation method of a strontium ferrite-SiO2/carbon nanotube/hydrogenated bisphenol A epoxy resin composite wave-absorbing material. The preparation method comprises the following steps: preparing a strontium ferrite-SiO2 composite material from nitrate, ethyl orthosilicate, absolute ethanol and the like by a sol-gel process; and preparing the strontium ferrite-SiO2/carbon nanotube/hydrogenated bisphenol A epoxy resin composite wave-absorbing material from the strontium ferrite-SiO2 composite material, carbon nanotube, hydrogenated bisphenol A, epoxy chloropropane and the like. The composite material has the advantages of favorable transparency, low viscosity and easy casting, has electric loss and magnetic loss properties, and thus, has important application value in the fields of stealth technology, electromagnetic shielding, human body safety protection and the like.

The present invention provides a method for efficiently preparing 2,3,3,3-tetrafluoropropene (HFO-1234yf) by a simple and economically advantageous method that is suitable for implementation on an industrial scale. The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the step of: (1) in a reactor, (1-1) reacting 1,1,1,2,3-pentachloropropane with hydrogen fluoride in an amount of 10 to 100 mol per mole of the 1,1,1,2,3-pentachloropropane 1; (1-2) in the presence of chromic oxide represented by composition formula: CrOm (1.5<m<3) or fluorinated chromic oxide obtained by fluorinating the chromic oxide; (1-3) in the presence of oxygen in an amount of 0.02 to 1 mol per mole of the 1,1,1,2,3-pentachloropropane; and (1-4) in the gas phase within a temperature range of 320 to 390 degrees centigrade, thereby obtaining a reaction product containing 2,3,3,3-tetrafluoropropene.

Disclosed is a process for preparing a highly pure 1,1,1,2,3-pentachloropropane product. The method comprises 1-a) providing a reaction mixture comprising ethylene, carbon tetrachloride and a catalyst in a principal alkylation zone to produce 1,1,1,3-tetrachloropropane in the reaction mixture; 1-b) treating the reaction mixture obtained in step 1-a) to obtain a 1,1,1,3-tetrachloropropane feedstock; 2-a) contacting the 1,1,1,3-tetrachloropropane feedstock with a catalyst in a dehydrochlorination zone to produce a reaction mixture comprising 1,1,1,3-tetrachloropropane and 1,1,3-trichloropropene; 2-b) treating the reaction mixture obtained in step 2-a) to obtain a 1,1,3-trichloropropene feedstock; 3-a) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone; and 3-b) treating the reaction mixture obtained in step 3-a) to obtain the highly pure 1,1,1,2,3-pentachloropropane product.

This invention provides a process for producing 2-chloro-3,3,3-trifluoropropene, comprising: reacting anhydrous hydrogen fluoride with at least one chlorine-containing compound selected from the group consisting of chloropropanes and chloropropenes represented by specific formulas in a gas phase in the presence of a chromium atom-containing fluorination catalyst while heating, the reaction being carried out in the presence of molecular chlorine or with a water content in the reaction system of 300 ppm or less. This invention enables suppression of catalyst deterioration and efficient production of 2-chloro-3,3,3-trifluoropropene in a simple and economically advantageous manner on an industrial scale.

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.