30results about How to "High sulfonation rate" patented technology

The invention relates to a method for preparing alpha-sulfonic fatty acid ester by sulfonating fatty acid ester, comprising the following steps: injecting the fatty acid ester and a sulfonating agent into a micro-structural reactor (5) and a reactor (6) inside diameter of which is a micro passage respectively, mixing and sulfonating the fatty acid ester and the sulfonating agent, controlling the reaction temperature between 50 and 100 DEG C, and controlling the reaction materials to stay for 1ms to 1s in the micro-structural reactor (5) and stay for 0.5 to 30 minutes in the micro-passage reactor (6); and then injecting the reaction materials into a micro-passage reactor (7), aging the reaction materials at a reaction temperature between 50 and 100 DEG C, and controlling the reaction materials to stay for 0.5 to 30 minutes in the micro-passage reactor to obtain the alpha-sulfonic fatty acid ester. In the method, the novel micro-structural reactor is adopted, the defect of difficult control due to strong reaction heat release in the prior art is overcome, the materials can be mixed evenly, the released reaction heat can be removed in time, the reaction time can be controlled accurately, and the method has the advantages of good sulfonating efficiency, simple and safe operation and good product quality.

The invention discloses a preparation method of triblock polymers with suspension nanometer zero-valent irons. The preparation method comprises the steps of utilizing an atom transfer radical polymerization(ATRP) method to synthetize triblock polymers of poly(t-butyl methacrylate), polymethyl methacrylate and polrvinyl benzene, hydrolyzing the poly(t-butyl methacrylate) to prepare polymethacrylic acid using trifluoroacetic acid, and finally sulfonating the polrvinyl benzene to prepare polystyrolsulfon acid using sulfuric acid acetyl. The method improves the original three-step reaction into a one-step reaction in the synthetic process of the polymers, thereby reducing the operation steps, reducing the consumption of raw materials, improving reaction stability and improving the productivity of aimed compounds; and adding trifluoroacetic acid in a hydrolysis process, so that the hydrolysis process is thorough and the reactivity and the suspension property of products are improved. The experiment results show that the triblock polymers comprise functional groups in required target products, the molecular weight can reach about 100 thousand, and the stabilization time of suspension effects of nanometer zero-valent irons can reach more than two months.

The invention discloses a sulfonated leather greasing agent containing fatty acid low-carbon ester. The sulfonated leather greasing agent containing fatty acid low-carbon ester disclosed by the invention is prepared by comprising the following steps: sulfonating by taking saturated fatty acid low-carbon ester as the raw material so as to obtain sulfonated fatty acid low-carbon ester, adding grease or modified grease, uniformly mixing, putting in an aging tank to age, decolourizing, and finally, adjusting pH of the decolourized sulfonated fatty acid low-carbon ester to be 4-8 so as to obtain the leather greasing agent. The invention further discloses a preparation method of the leather greasing agent. Because of being a liquid product, the leather greasing agent disclosed by the invention is convenient for down-stream customers to use; furthermore, the leather greasing agent is steady in property and has good fillibility; and thus, leather is plump and soft in hand feeling and smooth in surface.

The invention a method for green synthesis of tertiary oil recovery petroleum sulfonates in a high gravity reactor and belongs to the field of fine chemicals. The method comprises the steps: using distillate oil as a raw , sulfonating and aging the distillate oil through the high gravity-screw combination reactor to obtain an obtained petroleum sulfonate surfactant, and then neutralizing the obtained petroleum sulfonate surfactant. The method is mainly characterized in that the wide distillate oil is used as the raw material, and gas phase SO3 is used as a sulfonation agent; the petroleum sulfonates obtained after neutralizing with ammonium hydroxide is free of solvent removal process, so that the process is shortened; sulfonation efficiency is high, the content of active matters is high and the interfacial tension is low; and in the method, the production equipment and process which can realize processing strengthening, safety, high efficiency and cleaning are used. The method is suitable for scale and continuous production of the tertiary oil recovery petroleum sulfonates.

A method of using SO3-air mixture to produce alkylphenol sulfonic acid and salts thereof through sulfonating the alkylphenol via a film sulfonator belongs to sulphonate preparing technology field. The invention uses alkylphenol as raw material, and uses the SO3-air mixture to sulfonate the raw material via the film sulfonator to obtain alkylphenol sulfonic acid, and uses alkaline solution such as NaOH to neutralize thealkylphenol sulfonic acid to obtain alkylphenol sulphonate. The alkylphenol used is a alkylphenol containing one or two C1-C20 straight-chain or branched chain alkyl. The alkylphenol sulfonic acid and salt thereof prepared by the method has high sulphonation rate, low free oil content, low inorganic salt content and producing no spend acid, which is no corrosion to equipments and helpful for environmental protection.

The invention discloses a comb-shaped multi-hydrophilic chain rosin block polyether sulfonate and a preparation method thereof. The general structural formula of the rosin block polyether sulfonate is: wherein, m is an integer of 0-100, n is an integer of 0-100, and m and n are not 0 at the same time. The preparation method is as follows: first modify the rosin with aconitic acid to obtain the aconitic acid modified rosin, then polymerize the aconitic acid modified rosin, propylene oxide and ethylene oxide to obtain the rosin block polyether, then SO 3 The rosin block polyether is sulfonated by a falling film method as a sulfonating agent to obtain a comb-shaped multi-hydrophilic chain rosin block polyether sulfonate. The rosin block polyether sulfonate of the present invention has a comb structure, has 4 hydrophilic chains, has strong emulsifying performance, good dispersion stability, and its preparation method is simple, and can be widely used in the emulsification and dispersion of pesticides, coatings, Ink and other fields.

The invention discloses a method for sulfonating chitosan oligosaccharides, which specifically comprises the following steps: first preparing a chitosan oligosaccharide solution, and then mixing sodium dodecylbenzenesulfonate, monoalkyl titanate, ethanol and sulfuric acid solution to prepare To obtain the sulfonated reagent, add the composite sulfonated reagent into the chitosan oligosaccharide solution, stir and mix, react in a water bath at 50-90°C for 1-5h, cool to room temperature after the reaction, and place the reaction product in a dialysis bag in distilled water Dialyze, and finally dry the intercepted product to obtain sulfonated chitosan oligosaccharide. The method has the advantages of simple operation, low energy consumption, high yield and high purity of sulfonated products.

The invention relates to a synthesis method of disodium oleate. The synthesis method of the disodium oleate comprises the following steps: performing reaction on oleic acid, methanol and p-toluenesulfonic acid to obtain methyl oleate; performing addition on the methyl oleate and ethylene oxide to obtain methyl oleate ethoxylate; and performing sulfonated addition reaction on an intermediate product and sodium hydrogen sulfite to obtain methyl oleate ethoxylate sulfonate, performing saponification reaction, and performing extraction and separation on ethyl acetate and a saturated sodium chloride aqueous solution of 30 percent by weight to obtain the disodium oleate. The synthesis method of the disodium oleate has the following advantages: the raw materials are rich and can be regenerated, and the sulfonation rate is high; the solvent used in the preparation process is cheap, easily available and recyclable; and reaction is mild, energy consumption is low, sulfonation rate is high and yield is high.

The invention belongs to the technical field of resin and particularly relates to tire casting gypsum powder containing a sulfonated melamine formaldehyde resin water reducing agent and a preparation method of the tire casting gypsum powder. The tire casting gypsum powder containing the sulfonated melamine formaldehyde resin water reducing agent comprises raw materials of quartz, gypsum, water and the sulfonated melamine formaldehyde resin water reducing agent. Formaldehyde resin in the tire casting gypsum powder containing the sulfonated melamine formaldehyde resin water reducing agent is stable in molecular weight, and is favorable in dispersion for the gypsum powder and is high in water reducing rate in the tire casting application.

The invention discloses a resource disposal method for kraft wood pulp black liquor, which belongs to the fields of pulp and paper making, environmental protection and resource comprehensive utilization. In this process, the cooking black liquor from kraft wood pulp papermaking is centrifuged to remove water-insoluble matter, and then filtered with a ceramic ultrafiltration membrane, and the filtrate is reused; Purification, washing and purification, vulcanization reaction, evaporation concentration and simultaneous sulfonation modification, spray drying to produce sodium lignosulfonate. The acid analysis waste liquid is treated with alkali recovery process to recover sodium sulfide and reuse it for cooking and pulping. The present invention recycles the black liquor of kraft process wood pulp, and the produced sodium lignosulfonate product has high purity and good quality, and when used in concrete water reducer, each performance index meets the standard requirements of concrete high-efficiency water reducer .