30 results about "Ethylene glycol monopropyl ether" patented technology

The invention relates to a method for preparing the designed herbicide pretilachlor intermediate chloride ether. Under the action of organic amine catalyst, the chloride ether can be obtained by ethylene glycol monopropyl ether and bis (trichloromethyl) hydroxyphenyl in the organic solvent through the following chemical equation: HOC2H4OC3H7+Cl3COCOOCCl3 arrow ClC2H4OC3H7+CO2+HCl. The method replaces the traditional chlorination reagent with the bis (trichloromethyl) hydroxyphenyl, such as, thionly chloride, phosphorus oxychloride and hydrogen chloride, etc., and the potential safety hazard can be eliminated from the process source by using the novel chlorination reagent. Simultaneously, the emissions of pollutants are greatly reduced, and the method is a cleaning process with mild reaction conditions, safe and reliable operating process and high product yield, and has good industrialization implementation value and social economic benefits.

The invention discloses an anti-condensation coating. The anti-condensation coating comprises the following components in parts by weight: 12-30 parts of zinc oxide, 8-16 parts of benzoyl peroxide, 10-20 parts of dibutyl phthalate, 10-20 parts of triphenyl phosphate, 2-10 parts of isopropyl acrylate, 20-80 parts of styrene, 120-200 parts of butyl acrylate, 40-120 parts of acrylic acid, 80-100 parts of methyl methacrylate, 10-20 parts of ammonium zinc carbonate, 20-40 parts of titanium dioxide, 10-20 parts of ethylene glycol monopropyl ether and 6-12 parts of ethyl acrylate. The anti-condensation coating provided by the invention is simple to prepare, adopts nontoxic production raw materials, has good using effects, is environment-friendly, can form tough coats and has lasting anti-condensation property and waterproofness.

The invention discloses a method for preparing ethylene glycol monopropyl ether. The method is mainly etherification reaction of n-propanol and ethylene oxide in the presence of methyl disulphonate serving as a catalyst. The catalyst for catalyzing the ethoxylation of the n-propanol is high in activity, products are in narrow distribution, the selectivity is high, the conversion rate of the ethylene oxide reaches 100 percent, and the yield of the ethylene glycol monopropyl ether is more than 95 percent.

The invention relates to a concrete crack repairing additive, in particular to an organic silicon resin emulsion modified high-molecular polymer crack repairing additive, and a preparation method anda use method thereof. Every 100 parts by weight of the repairing additive contains 2-20 parts by weight of an organic silicon resin emulsion, 2-6 parts by weight of a coalescing agent, 1-7 parts by weight of a water reducing agent and 0.2-1 part by weight of a defoaming agent, with the balance being water, wherein the solid content of the organic silicon resin emulsion is 45%-55%, and the film-forming agent is at least one of selected from a group consisting of propylene glycol butyl ether, ethylene glycol monopropyl ether and propylene glycol methyl ether acetate. By controlling the organic silicon resin emulsion, the water reducing agent and the defoaming agent within the above ranges, the strength, coalescence, film-forming property and stability of the organic silicon resin emulsion are brought into full play, and the cement mortar prepared from the repairing additive has good strength performance and durability and is suitable for repairing fine concrete cracks with sizes of 0.3-2.5 mm.

The invention discloses a modified polytetrafluoroethylene coating for a centrifugal pump and a preparation method thereof and relates to the technical filed of coatings for centrifugal pumps. The modified polytetrafluoroethylene coating is prepared from the following raw materials in parts by mass: 90-100 parts of polytetrafluoroethylene, 50-60 parts of polyphenylene sulfide, 45-50 parts of organosilicone resin, 30-40 parts of ethylene glycol monopropyl ether, 25-30 parts of talc powder, 25-30 parts of quartz powder, 15-20 parts of fumed silica, 40-45 parts of epoxidized soybean oil, 10-15 parts of a titanate coupling agent, 18-22 parts of calcium carbonate, 15-20 parts of polydimethylsiloxane, 12-16 parts of dibutyl tin dilaurate, 10-15 parts of a toughening agent, 8-12 parts of an acrylic acid flatting agent, 5-10 parts of modified zinc phosphate, 5-10 parts of aluminum tripolyphosphate, 40-45 parts of methylisobutyl ketone and 20-25 parts of xylene. The coating prepared by the preparation method has good adhesion to the centrifugal pump and the formed coat has the advantages of very strong corrosion resistance, abrasion resistance and anti-aging property so that the service life of the centrifugal pump is prolonged.

The invention discloses a circulation clean production method of N-propoxyl ethyl-2, 6-diethylaniline. The circulation clean production method comprises the following steps: benzene sulfonyl chloride and propylcellosolve carry out esterification reaction to produce a benzene sulfonic acid (2-propoxyl group) ethyl ester, the benzene sulfonic acid (2-propoxyl group) ethyl ester and 2, 6-diethylaniline carry out N alkylation reaction to produce N-propoxyl ethyl 2, 6-diethylaniline, i.e. and rough amidogen ether, the rough amidogen ether is rectified to produce the N-propoxyl ethyl-2, 6-diethylaniline, i.e. fine amidogen ether. The invention has easy operation and clean processing. On one hand, the invention overcomes the shortage of the traditional technology by preferably selecting sulfonic acid chloride; on the other hand, salt obtained from the preferably selected sulfonic acid chloride through alkylation reaction is easy to recover, and the salt is back used for producing sulphonic acid ester again after being simply processed, thereby the invention greatly enhances the economic and the social benefits of the product.

The invention discloses fireproof mould-proof coating rubber which comprises the following components in parts by weight: 40-80 parts of isopropyl acrylate, 12-16 parts of epoxy resin, 40-50 parts of ethylene glycol monopropyl ether, 20-40 parts of ethyl acrylate, 12-24 parts of benzoyl peroxide, 10-20 parts of dibutyl phthalate, 8-16 parts of polyester, 20-30 parts of butanediol acrylate, 4-6 parts of trimethylolpropane, 10-20 parts of butanediol, 10-20 parts of methoxyphenol, 8-12 parts of acrylamide and 10-20 parts of styrene. The fireproof mould-proof coating rubber disclosed by the invention is simple to prepare; the adopted production raw materials are nontoxic, and the application effect of the coating rubber is good; and the coating rubber is environment-friendly and can form a firm bright film when acting on leather surface decoration.

The invention discloses a heat-absorbing paint which is prepared by the following steps: uniformly dispersing a light absorber, a film former, a solvent and aids by ball milling, adding a film forming aid, and mixing to obtain the solar heat-absorbing paint. The heat-absorbing paint is prepared from the following raw materials in parts by weight: 50-100 parts of film former, 10-30 parts of film forming, 35-55 parts of light absorber, 20-50 parts of solvent and 10-30 parts of aids. The film forming aid is hexanediol butyl ether acetate, ethanediol monopropyl ether or the like. The preparation method of the film former comprises the following steps: mixing casein and gelatin according to the weight ratio of (5-10):(2-3), adding water, immersing at 15-22 DEG C, transferring to a normal temperature environment, adding a mixed solution composed of ethyl acrylate and polydimethylsiloxane in a weight ratio of (1-2):(1-3), reacting, stirring, and carrying out ultraviolet irradiation for 10-15 minutes, thereby obtaining the modified casein-gelatin. The film former is modified and used as a critical raw material for preparing the paint, so that the prepared paint has favorable weather resistance and water resistance under outdoor conditions. The preparation technique is simple and understandable, and ensures the heat absorption efficiency of the heat-absorbing paint.

The invention provides a preparation method and system of ethylene glycol monopropyl ether. The preparation method adopts the following reaction equations: n-propanol and ethylene oxide react under the action of a catalyst to synthesize an ethylene glycol monopropyl ether crude product; and rectification under vacuum is carried out on the crude product to obtain an ethylene glycol monopropyl etherfinished product. The preparation system comprises an addition and rectification integrated reaction kettle; the addition and rectification integrated reaction kettle comprises a reaction kettle mainbody; a rectification tower is connected above the reaction kettle main body; the reaction kettle main body comprises a reaction feed port, a reaction discharge port and a material steam outlet; thematerial steam outlet is connected with the rectification inlet of the rectification tower; the rectification tower is provided with the rectification inlet and a rectification outlet and is also connected with a vacuum device. The ethylene glycol monopropyl ether prepared by the method has high purity (more than or equal to 99.8%) and few byproducts.

A domestic sewage disinfectant, the composition is composed of the following weight ratios: 1 part of N-dihydroxyethylglycine, 9 parts of fatty acid glycerides, 10 parts of aminophenyl, 11 parts of propanol, 7 parts of nitrilotriacetic acid, poly 9 parts of hexamethylene guanidine, 10 parts of polyoxyethylene alcohol ester, 11 parts of polyethylene glycol, 4 parts of chlorhexidine, 8 parts of alkanolamide, 9 parts of ethylene glycol monopropyl ether, 10 parts of aminopropionic acid 11 parts of propylene glycol, 12 parts of p-chloro-m-xylenol, 14 parts of sodium alginate, 15 parts of polyhexamethylene biguanide, 16 parts of polyoxyethylene ether, 4 parts of polyvinylpyrrolidone, 6 parts of chlorhexidine salt, 7 parts of mucopolysaccharide, 8 parts of dextran, 9 parts of aldehyde phenyl, 10 parts of betaine, 14 parts of alkyl dimethyl ammonium salt.

The invention discloses a disinfectant for livestock and poultry shed. The disinfectant comprises potassium permanganate, formalin, ethylene glycol monopropyl ether, ethylene diamine tetraacetic acid and water. The invention has a reasonable formula, good usage effect and low production cost.

The invention relates to a production method of 2-propoxyethyl chloride and belongs to the technical field of fine chemical intermediate organic synthesis. The synthesis process comprises the following steps: preparing a crude product by taking ethylene glycol monopropyl ether and excessive sulfoxide chloride as main raw materials and adopting an efficient catalyst through heating and heat preservation, wherein the reaction rate is controlled by dropwise adding sulfoxide chloride; and performing neutralization, hydrolysis, and liquid separation after standingto obtain 2-propoxyethyl chloride. Compared with the existing process, the synthesis process has the advantages that the catalyst has higher catalytic efficiency and is cheap and easily available; the technological process is simple and convenient; the catalyst used in the existing process and hydrochloric acid in the crude product form a complex easily, so that the product has precipitates and the product yield is influenced; and the crude product prepared by the catalyst is clear and transparent, the product can be obtained without water washing, the quality is stable, the product content reaches above 99.5 percent, the yield is more than 99.0 percent, the production cost is lower, and the synthesis process is particularly suitable for industrialized production.

The invention discloses a mildewproof coating which comprises, by weight, 40-80 parts of acrylic isopropyl ester, 20-40 parts of epoxy resin, 20-28 parts of ethylene glycol monopropyl ether, 30-40 parts of ethyl acetate, 18-24 parts of benzoperoxide, 10-20 parts of dibutyl phthalate, 8-16 parts of polyester, 20-30 parts of butanediol acrylate, 4-6 parts of trimethylolpropane, 10-20 parts of butanediol, 10-20 parts of metoxyphenol, 20-40 parts of zinc ammonium carbonate and 10-20 parts of titanium dioxide. The mildewproof coating is simple to make, and nontoxic production raw materials are selected and adopted, so that using of the coating has good effect and is environment-friendly, and a solid shining film can be formed acting on coating the surface of leather.

The invention provides a synthesis method of an antagonist medicine intermediate o-nitrobenzoic acid. The method mainly comprises the following steps of adding 3mol of 2-ethyl-3-nitrophenol and 4 to 5mol of ethylene glycol monopropyl ether solution into a reaction container; raising the solution temperature to 30 to 35 DEG C; controlling the stirring speed being 150 to 170 rpm; maintaining the state for 30 to 50min; then, adding 6 to 7mol of triphenylphosphine powder; continuously performing reaction for 60 to 90min; lowering the solution temperature to 5 to 8 DEG C; separating out solid; performing filtering; sequentially using propionic anhydride solution for washing and triethylamine solution for washing; then, performing recrystallization in the 2-methyl pentane solution; performing dewatering by a dewatering agent; obtaining crystal o-nitrobenzoic acid.

The invention discloses waterproof anti-condensation glue. The waterproof anti-condensation glue comprises the following ingredient in parts by weight: 100-120 parts of epoxy resin, 80-120 parts of butyl acetate, 12-30 parts of zinc oxide, 8-16 parts of benzoyl peroxide, 10-20 parts of dibutyl phthalate, 10-20 parts of triphenyl phosphate, 2-10 parts of isopropyl acrylate, 20-80 parts of styrene, 10-20 parts of zinc ammonia carbonate, 20-40 parts of titanium dioxide, 10-20 parts of ethylene glycol monopropyl ether and 6-12 parts of ethyl acrylate. The waterproof anti-condensation glue is simple to manufacture, good in using effect, environmental-friendly, capable of forming tough coatings and durable in anti-condensation and waterproof performance. In addition, the producing raw materials are free of toxicity.