44 results about "Stearoyl chloride" patented technology

The invention discloses an application of a raw material composition in preparation of a biodegradable insect trapping plate. The raw material composition comprises the following components in parts by weight: 5-20 parts of modified papermaking waste, 50-90 parts of a biodegradable resin and 1-10 parts of auxiliaries, wherein the modified papermaking waste comprises 100 parts of papermaking waste,1-50 parts of a modifier and 0.1-5 parts of a phase transfer agent, and the modifier is one or more of stearoyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chloride andtrichloroacetyl chloride. The master batch of the biodegradable insect trapping plate and the biodegradable insect trapping plate can be completely degraded by microorganisms in the nature, so that the environment is not polluted, waste utilization can be achieved, and the cost is reduced. The modified papermaking waste is adopted, so that the compatibility of the modified papermaking waste and biodegradable resin can be effectively improved, and the tensile strength and elongation at break of the biodegradable insect trapping plate are improved. The insect trapping amount of the biodegradable insect trapping plate is obviously superior to that of a traditional PP insect trapping plate and that of a traditional PVC insect trapping plate.

The invention relates to a method for producing stearoyl chloride and homologs thereof by liquid-phase phosgenation, which is characterized in continuous operation. The method comprises the following steps: simultaneously adding a raw material A, a catalyst and phosgene into a main photochemical reaction kettle (5), reacting in the main photochemical reaction kettle (5) and a photochemical reaction mature kettle (6), removing the phosgene by a negative pressure phosgene removal column (7), and decolorizing by a stearoyl chloride product decolorizing device (8) to continuously generate the stearoyl chloride product, wherein the raw material A is one of stearic acid and homologs thereof, or the mixture of two or three of the homologs. The invention solves the problems of long reaction time, low phosgene utilization ratio, multiple byproducts, low product purity, difficulty in absorbing and utilizing the generated HCl and CO2 gases, and the like in the existing technique for producing stearoyl chloride by gas-phase phosgenation, and provides a high-efficiency environment-friendly high-quality production technique of stearoyl chloride, homologs and homologic mixtures thereof.

The invention relates to a decoloring method of crude stearyl chloride which is characterized by comprising the following steps: pre-heating colored crude stearyl chloride to 80-200 DEG C in a pre-heater, sending the pre-heated colored crude stearyl chloride into an evaporator and circularly evaporating at 120-250 DEG C under an absolute pressure of 5Pa-50Kpa, pumping heavy components at the bottom of the evaporator into a tar concentrating devise by using a recycle pump to perform further concentration and evaporation, discharging the colored heavy component tar from the bottom for processing, cooling down gas phase at the top of the evaporator and the tar concentrating devise by using a condenser and a subcooler to obtain colorless pure stearyl chloride products. According to the invention, continuous decoloring of crude stearyl chloride containing heavy components is realized with high yield and low cost of process. Compared with activated carbon adsorption decoloring technology, the invention is applicable to removal of high boiling tar from heat sensitive materials due to low saturation of the product.

The invention belongs to the technical field of medicines, and in particular relates to a combretastatin A4 derivative preparation, wherein the derivative is obtained through the reaction between combretastatin A4 and stearyl chloride under the substitution reaction condition and under the condition that an acid-binding agent exits, and the structural formula of the derivative is as follows (shown in the description). The invention further provides a nanometer preparation of the derivative. The preparation has the advantages of improving the anti-tumor effect of medicines, enhancing the stability of the medicines, reducing the toxic and side effects of the medicines, etc.

The invention relates to a method for continuously producing stearoyl acid chloride. The method comprises steps as follows: a, stearic acid and a catalyst are continuously and proportionally fed from a liquid phase feeding port in the top of a first bubble tower and sequentially enter a second bubble tower and a third bubble tower in a streaming manner; through forced circulation of a first tower bottom pump, a second tower bottom pump and a third tower bottom pump, a crude productstearoyl acid chloride is finally discharged out of a discharging port in the third tower bottom pump and then enters an acyl chloride refining procedure; b, fresh phosgeneenters a gas phase feeding portand continuously bubbles through the first bubble tower and the third bubble tower, exhaust of the first bubble tower enters the middle of the second bubble tower, exhaust of the third bubble tower enters the bottom of the second bubble tower, unreacted phosgene in exhaust of the first bubble tower and the third bubble tower continuously participates in reaction in the second bubble tower, and exhaust from the top of the second bubble tower enters a follow-up hydrochloric acid absorption procedure. According to the method and the device, the quality of stearoyl acid chloride produced through reaction is good, the crude productstearoyl acid chloride can be higher than 97.5%, the tar content of the crude product is low, and the follow-up treatment is easy.

The invention discloses a preparation method for a heatproof highly-basic anion exchange resin with great exchange capacity. The preparation method comprises the following steps: preparing a first material from 3-methyl-3-hydroxymethyloxetane, trimethylol propane, sodium methylate, boron trifluoride ethyl ether, 2,3-glycidyltrimethylammonium chloride, N,N-dimethyl formamide and modified white carbon black; preparing a water phase and an oil phase; adding the oil phase into the water phase and continuing to add dichloroethane and sulfuryl chloride to prepare a second material; adding cetyl dimethyl tertiary amine into the second prefabricated material, carrying out mixing and adding 1,6-hexamethylene-bis(cyanoguanidine) and sodium ethoxide to prepare a third prefabricated material; and adding nitrobenzene, anhydrous AlCl3, stearoyl chloride, chlorododecane and chlorocycloparaffin to prepare the heatproof highly-basic anion exchange resin with great exchange capacity. The anion exchange resin prepared in the invention has good thermal stability and great exchange capacity.

The invention discloses a graphene dispersing agent, a preparation method thereof and a preparation method of graphene. 9-anthracenemethanoland stearoyl chloride are subjected to an affinity acyl substitution reaction to prepare the small-molecular graphene dispersing agent, the small-molecular graphene dispersing agent is used for liquid-phase stripping of graphite to prepare graphene, the efficiency is high, the environment is protected, the preparation process is simple, and the reaction conditions are mild and easy to control.

The invention discloses a raw material composition and master batch of a biodegradable material and a preparation method and application thereof. The raw material composition of the biodegradable material comprises the following components in parts by weight: 20-80 parts of polylactic acid, 1-40 parts of poly(butylene adipate-co-terephthalate), 1-40 parts of modified papermaking waste and 1-20 parts of an auxiliary agent, and the raw material composition of the modified papermaking waste comprises the following components in parts by weight: 100 parts of papermaking waste, 1-50 parts of a modifier and 0.1-5 parts of a phase transfer agent, wherein the modifier is one or more of stearoyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chloride and trichloroacetylchloride. The biodegradable master batch and the material are easy to degrade in nature, the raw materials are renewable, and the cost is low. The prepared biodegradable material has good bending strength, flexural modulus and notch-free impact strength.

The invention discloses a method for preparing esterified porous starch by virtue of a solvent method. The method disclosed by the invention comprises the following steps: mixing porous starch with triethylamine at normal temperature, adding anhydrous carbon tetrachloride and stearyl chloride, mixing and reacting, then separating out precipitates, washing and drying, so that the esterified porous starch is obtained. The method disclosed by the invention has the advantages that technological process is simple, production cost is low, yield of the prepared esterified porous starch is more than 93.08%, continuous large-scale production can be realized, and esterification degree of the obtained esterified porous starch can reach 1.7*10<6> peak area per gram and acidity can reach 10.47 DEG T.

The invention provides a stearoyl chloride phosgene recovery method. The method comprises the following steps that firstly, tail gas generated stearoyle chloride production is introduced into a falling-film absorption tower; secondly, the temperature-increased gas is introduced into a cooling tower; thirdly, the cooled materials are introduced into a NaOH solution; thirdly, the discharged materials are transferred into a synthesizing kettle to be heated; fourthly, the materials of which the gas is exhausted are heated and filtered, and meanwhile the exhausted gas is continuously introduced into the NaOH solution; lastly, the gas is introduced into a filtering tank with drying agents, and then the gas is recovered. According to the stearoyl chloride phosgene recovery method, the production technology is adopted, and meanwhile temperature control is very important; the rest gas in the tail gas can be removed, and environmental pollution caused by direct emission of the tail gas is avoided; meanwhile, phosgene can be further recovered, the cost is lowered, the overall phosgene waste can be reduced, and the purity of the recovered recoverable phosgene is 69.9%-78.9%.

The invention discloses a PVC micro-foaming profile, a raw material and a preparation method and application of the PVC micro-foaming profile. A raw material composition of the PVC micro-foaming profile comprises 1-20 parts of modified papermaking waste, 20-80 parts of PVC resin, 20-80 parts of inorganic minerals, 1-15 parts of an impact modifier, 1-5 parts of a plasticizer, 1-8 parts of a foamingagent, 2-20 parts of a polyvinyl chloride foaming regulator and 1-8 parts of a PVC stabilizer. The raw material composition of the modified papermaking waste comprises 100 parts of papermaking waste,1-50 parts of a modifier and 0.1-5 parts of a phase transfer agent, wherein the modifier is one or more of stearoyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chlorideand trichloroacetyl chloride. According to the PVC micro-foaming profile, the modified papermaking waste is used as a raw material, so that the cost is reduced; the prepared PVC micro-foaming sectional material is smooth in surface, uniform in internal cell size and low in density, and the tensile strength and the bending strength are improved.

The invention discloses an agarose-based emulsifier. Raw materials comprise agarose and a fatty acid derivative, wherein the molar ratio of the agarose to the fatty acid derivative is (1:2)-(1:4), themolar weight of the agarose is metered by disaccharide units, and the fatty acid derivative is acetyl chloride, propionyl chloride, butyryl chloride, valeryl chloride, hexanoyl chloride, capryloyl chloride, decanoyl chloride, lauroyl chloride, myristoyl chloride, palmitoyl chloride or stearoyl chloride. The invention further discloses a preparation method of the agarose-based emulsifier, esterification modification of the agarose is realized by adopting a solvent method, the process is simple, the efficiency is high, and industrial production is easy to realize. The agarose-based emulsifier has a potential application prospect in the industries of medicines, cosmetics and foods.

The invention provides a stearoyl chloride phosgene synthesis method. The method comprises the steps of 1, heating stearic acid; 2, heating the catalyst DMF; 3, introducing phosgene into a first-order reaction chamber continuously; 4, spraying heated stearic acid downwards through a spraying device, and spraying the heated catalyst DMF downwards through the spraying device at the same time; 5, introducing gas which does not react completely into a second-order reaction chamber; 6, introducing gas which does not react completely into a third-order reaction chamber; 7, introducing gas into a tail gas processing device; 8, rectifying materials obtained after reaction is conducted in the first-order reaction chamber, the second-order reaction chamber and the third-order reaction chamber, so that a finished product is obtained. By the adoption of the production technology, the contact area of reactants can be increased, reaction time can be shortened, increase of by-products can be avoided, and therefore reaction efficiency is improved, cost is reduced, and phosgene waste is reduced.

The invention provides a supermolecule hydrogel system loaded with 10-hydroxycamptochecine and a method for preparing the supermolecule hydrogel system. The supermolecule hydrogel system comprises fatty acid esterified grafted polyvinyl alcohol, alpha-cyclodextrin and the 10-hydroxycamptochecine. At least two types of fatty acid chloride and polyvinyl alcohol are simultaneously esterified to obtain the fatty acid esterified grafted polyvinyl alcohol, the fatty acid chloride selectively includes at least two types of hexanoyl chloride, octanoyl chloride, lauroyl chloride, myristoyl chloride, oleoyl chloride and stearyl chloride, and every two carbon chains of the selected fatty acid chloride are different from each other by six carbon atoms at least. The supermolecule hydrogel system and the method have the advantages that the 10-hydroxycamptochecine can be released from the supermolecule hydrogel system at constant speeds, accordingly, hydrogel is high in safety, the method is simple, and the supermolecule hydrogel system is high in drug-loading capacity and good in stability.

The invention belongs to the technical field of nanomaterials, and particularly relates to an oil-water separating membrane material and a preparation method and application thereof. The oil-water separating membrane material is characterized in that an initiation system composed of copper oxide nanowires and ethyl alcohol is used for initiating pyrrole monomers to be subjected to in-situ oxidation-reduction polymerization on the surfaces of the copper oxide nanowires, a compact polypyrrole coating layer is formed, and a CuO (Cu2O)@ppy material of a core-shell structure is constructed; and a super-hydrophobic and super-oleophylic oil-water separating membrane material is obtained by modifying the surface of the material with super-hydrophobic stearoyl chloride, has excellent photo-thermal conversion performance, extremely high corrosion resistance and long service life, can be repeatedly used, and can be used for realizing efficient purification and recovery of crude oi. The crisis of energy shortage is relieved, meanwhile, sewage recycling is completed, and the environmental problem is relieved.

The invention provides a preparation method of pentaerythritol tetraisostearate. The preparation method specifically comprises the following steps: S1, taking pentaerythritol and isostearoyl chlorideaccording to a molar ratio of 1: (3.8-4.8), and putting the pentaerythritol and the isostearoyl chloride into a reaction kettle; and S2, carrying out a reaction for 0.5-12 h at a reaction temperatureof 80-150 DEG C under a vacuum pressure of-0.1 MPa to-0.05 MPa so as to obtain the pentaerythritol tetraisostearate product. The method does not need a catalyst; the reaction conditions are mild, thereaction temperature is greatly reduced, and a conventional enamel reaction kettle can be used; reaction time is short, and energy consumption is low; the product is light in color and high in quality; the method is simple in post-reaction treatment and suitable for industrialization.