44 results about "3-Dichloro-2-propanol" patented technology

A method of highly selective catalytic hydrochlorination of glycerine and / or monochloropropanediols to the dichloropropanol products 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol, carried out in at least one continuous reaction zone at reaction temperatures in the range of 70-140° C. and with continuous removing of the water of reaction, the liquid feed containing at least 50% by weight of glycerine and / or monochloropropanediols. The method can be carried out in a continuously operating one-step circulation reactor or a cascade of continuous flow reactors of the liquid-gas type.

A low-temp high-speed demulsifier for the water and wax contained crude oil is prepared through the block copolymerization between phenolamine resin, epoxy propane and epoxy ethane to obtain star branched polyether, reacting on water-soluble cross-linking agent, and adding additive.

The invention relates to a synthesis method of epoxypropyltrimethylammonium chloride. The method comprises the following steps: adding dichloroethane and epichlorohydrin in a reaction bottle in turn at 20-30 DEG C, injecting trimethylamine gas in the reaction bottle in a constant speed, reacting for 8-10h after injecting, reducing temperature to 5-15 DEG C while stopping stirring, filtrating to obtain white crystals; adding water to separate dichloroethane, heating with water bath to 60-70 DEG C, performing reduced pressure distillation, taking samples to test, stopping distillation when the concentration of epoxypropyltrimethylammonium chloride solution reaches 69%, and reducing temperature to obtain the desired product. The method overcomes the defect that the existing synthesized epoxypropyltrimethylammonium chloride contains impurities; intermediate 3-chloro-2-hydroxypropyltrimethyl ammonium chloride is not needed to prepare and the product is directly prepared so as to avoid the preparation of impurity 1,3-dichloro-2-propanol and bisquaternary ammonium salt, has high product quality and save the cost.

The invention discloses a method for purifying a cationic etherifying agent via a phosphate ester extraction agent. According to the method, the crude product of the cationic etherifying agent is extracted and purified by taking a phosphate ester compound as an extraction agent so as to remove epoxy chloropropane and 1,3-dichloro-2-propanol remaining in the cationic etherifying agent product. When the extraction is carried out, the final extraction agent rich in the epoxy chloropropane and the 1,3-dichloro-2-propanol is regenerated, wherein a regeneration environment is maintained as an alkaline environment by adopting an alkaline liquor; the regenerated extraction agent is recycled aiming at the extraction of the crude product of the cationic etherifying agent; and meanwhile, the recycled epoxy chloropropane is cycled into the synthesized cationic etherifying agent to be utilized. Compared with the prior art, the method disclosed by the invention is simple in process, simple and convenient to operate, less in equipment investment, economical and environmentally friendly.

The invention relates to a flame retardant bis[tris(1,3-dichloro-2-propoxy)silicon-acyloxy]ethane compound and a preparation method thereof. The structure of the compound is represented by a formula shown in a drawing. The preparation method comprises the steps of reacting silicon tetrachloride with 1,3-dichloro-2-propanol of a mole which is equal to that of silicon tetrachloride in an organic solvent at the temperature below 25 DEG C, then, dropwise adding glycol of a mole which is 0.5 times that of silicon tetrachloride, heating to the temperature of 65-80 DEG C after completing dripping, and reacting for 7-10 hours; then, dropwise adding 1,3-dichloro-2-propanol of a mole which is 2-3 times that of silicon tetrachloride, and carrying out heat-preservation reaction for 6-10 hours at the temperature of 70-90 DEG C; then, adding an acid binding agent, and carrying out heat preservation for 1 hour while stirring; purifying, thereby obtaining the flame retardant bis[tris(1,3-dichloro-2-propoxy)silicon-acyloxy]ethane. The compound disclosed by the invention has high flame retarding efficacy due to the synergism of silicon and chlorine and is suitable for serving as a flame retardant for materials, such as polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin and the like, and the preparation method is simple and is low in cost, so that the industrial production is facilitated.

The invention discloses a gel polymer binder for a lithium sulfur battery electrode material and a preparation method thereof. The preparation method comprises the following steps: (1) weighing 1,3-dichloro-2-propanol and polyethylene glycol, uniformly mixing, introducing N2 to deoxygenize, adjusting temperature, keeping constant temperature, adding a catalyst to accelerate a polymerization reaction, extracting a target product 1,3-dichloro-2-propyl alcohol polyethylene glycol ether, and then adjusting the pH value of the solution with an alkaline solution; (2) weighing a sulfosalt, completely dissolving the sulfosalt in distilled water, adjusting temperature, keeping constant temperature, and adding elemental sulfur to prepare a polysulfide salt; (3) mixing a product 1,3-dichloro-2-propyl alcohol polyethylene glycol ether in the step (1) and a product polysulfide salt in the step (2), adjusting temperature, keeping constant temperature, taking out a gel-like substance, and rotatably evaporating at a certain temperature to obtain a gel polymer binder for a lithium sulfur battery. The gel polymer binder prepared by the invention has the characteristics of easiness in operation, good bonding effect, high electrode active material utilization rate, good battery rate capability and the like.