39results about How to "Play a role in dissolution" patented technology

The invention relates to the field of medicine, and in particular relates to a cefprozil compound, and dispersible tablets, a dry suspension and a preparation method thereof. The cefprozil compound is a crystal, and an X-ray powder diffraction diagram obtained by Cu-K alpha ray measurement is shown in figure 1. Through experimental detection, the cefprozil dispersible tablets and the dry suspension have the advantages of superior stability and quite good smell and taste, and are quite suitable for clinical application.

The invention discloses a grinding roller shock absorption grinding wheel adjustable in hardness. Composition of the grinding roller shock absorption grinding wheel comprises white fused alumina, single-crystal corundum, black silicon carbide, phenolic resin liquid, phenolic powder, epoxy resin, sodium salt, ice crystal powder, and pyrite ore powder. The grinding roller shock absorption grinding wheel utilizes dissolution action of water in cooling liquid on the sodium salt in the composition of the sand wheel, and controls dissolution speed of the sodium salt by controlling cooling liquid flow. The strength of resin binder bonding grinding material is gradually reduced in the process that the sodium salt is gradually dissolved by water. The purpose of reducing the hardness of the sand wheel in a controllable mode can be achieved in the process. The grinding roller shock absorption grinding wheel is adjustable in hardness and strong in universality, greatly reduces the number of grinding roller grinding machines configured by a user, simultaneously greatly reduces labor amount and auxiliary work hours for frequent replacing of grinding wheels, and is favorable to improving production efficiency of grinding and cutting rollers.

The invention relates to an oxcarbazepine sustained release tablet and a preparation method thereof. According to the method adopted by the invention, raw materials are specially treated together with an auxiliary material first to prepare oxcarbazepine composition, and the particle size of the oxcarbazepine composition is strictly controlled. KG-802 is added into an extra auxiliary material. According to the oxcarbazepine sustained release tablet prepared with the method provided by the invention, the use of a large amount of a cosolvent namely sodium lauryl sulfate in an original developed preparation is avoided, the toxicity of a preparation finished product to a human body after taking is reduced, and the pollution to the environment in a preparation process is reduced; and compared with a reference product on sale, release curves in release media with different pH values can keep similar, the bioequivalence of an in-vitro test is ensured, and the release curves of the release media with different pH values are more similar to one another in comparison with the preparation on sale. The oxcarbazepine sustained release tablet provided by the invention is prepared by adopting a conventional granulation and tabletting process, the process is simple, and the oxcarbazepine sustained release tablet is suitable for large-scale production.

The invention belongs to the technical field of fuel additives and particularly relates to a liquid fuel additive. The additive is prepared from, by weight, 10-25 parts of cleaning agent, 5-15 parts of propanediol butyl ether, 3-11 parts of methylsilicone oil, 2-9 parts of n-hexane, 2-8 parts of dioctyl phthalate, 2-7 parts of methyl cyclopentadiene, 1-8 parts of diethylene glycol dinitrate, 1-7 parts of butyl acetate, 1-5 parts of benzyl alcohol and 1-6 parts of dispersion agent. The liquid fuel additive effectively improves the power and the cetane number of fuel, improves diesel storage stability, improves combustion performance and combustion efficiency of fuel, and achieves energy conservation and emission reduction.

The invention relates to the technical field of fuel additives, in particular to an automobile fuel additive. The automobile fuel additive is made of, by weight, 8-24 parts of pentaerythritol, 5-21 parts of polyether amine, 2-10 parts of methyl benzoate, 1-5 parts of 1-vinyl imidazole, 1-7 parts of isopropyl acetate, 2-10 parts of ethylene glycol monobutyl ether, 1-5 parts of ethylene carbonate, 4-14 parts of 2-ethyl hexyl nitrate and 1-9 parts of isooctane. The automobile fuel additive has the advantages that excellent cleaning, purifying and corrosion preventing effects can be realized by the automobile fuel additive, gasoline can be effectively saved, and exhaust emission can be reduced.

The invention relates to a pretreatment method for freezing and fresh-keeping of meat products. The method comprises the steps of low-voltage electric field treatment, non-freezing liquid dipping and freezing and composite coating agent coating protection treatment. The freezing preservation pretreatment method disclosed by the invention is simple to operate and easy to realize; by using a low-voltage electric field, the meat state can be remarkably improved before coating, and the combination efficiency of the composite coating agent is improved; the anti-freezing agent and the antioxidant are used, so that ice crystal growth can be effectively prevented in the meat freezing storage process, and protein condensation and denaturation are effectively prevented; the coating agent is used for forming a coating on the surface of the meat, so that the meat is effectively prevented from being dried, and the freezing quality of the meat is guaranteed. The meat product treated by the composite meat product coating agent treated by utilizing an oligosaccharide low-temperature protection mechanism and a coating protection effect is not easy to dry and brown in a freezing storage process, and the frozen product is good in quality and good in unfreezing quality.

The invention relates to the technical field of fuel additives, in particular to an automobile fuel combustion enhancing additive. The additive is prepared from, by weight, 8-24 parts of 3-hydroxybenzoic acid, 5-21 parts of ethylene carbonate, 2-10 parts of 3-methylphenol, 1-5 parts of alcohol polyoxyethyleneether carboxylate, 1-7 parts of sodium alkyl benzene sulfonate, 2-10 parts of ehtylene glycol monobutyl ether, 1-5 parts of trialkyl phosphate, 4-14 parts of 1,5-binitro pentane and 1-9 parts of triphenylmethane. The additive has a remarkable smoke abatement and discharge function, the emission of harmful substances is reduced, gasoline is saved, and the combustion performance of automobile fuel is effectively improved.

The invention relates to the technical field of fuel additives, and in particular, relates to a diesel oil efficiency-increase and emission-reduction additive prepared from the following raw materials in parts by weight: 8-24 parts of 1-hexyl-3-methylimidazolium bromide, 5-21 parts of dimethylformamide, 2-10 parts of methyl benzoate, 1-5 parts of succimide, 1-7 parts of methyl silicone oil, 2-10 parts of 2-diethylaminopyridine, 1-5 parts of 3-methylphenol, 4-14 parts of methyl nitrate, and 1-9 parts of ethyl nitrate. The diesel oil efficiency-increase and emission-reduction additive has the advantages of good cleaning purification and anti-corrosion effects, effectively saves diesel oil, reduces exhaust gas emission, and significantly reduces emissions of black smoke and particulate matters.

The invention belongs to the technical field of fuel oil additives, and particularly relates to an energy-saving fuel oil additive. The additive is prepared from, by weight, 10-25 parts of a cleanup agent, 5-15 parts of 2-hexanol, 3-11 parts of di-n-butyl phosphite, 2-9 parts of mono-alkyl ester of fatty acids, 2-8 parts of dicapryl phthalate, 2-7 parts of 3-hydroxy benzoic acid, 1-8 parts of hydroxypropyl methyl cellulose, 1-7 parts of tritolyl phosphate, 1-5 parts of methyl tert-butyl ether and 1-6 parts of 2,4-dimethylphenol. The additive allows fuel oil to be fully combusted, increases the combustion efficiency, saves the fuel oil, reduces the cost, reduces emission and protects the environment.

The invention belongs to the technical field of fuel, and particularly relates to fuel with reduced particulate matter emission. The fuel is made of, by weight, 45-65 parts of diesel, 10-20 parts of methanol and 0.1-0.6 part of diesel additives. The diesel additives comprise, by weight, 8-20 parts of tricresyl phosphate, 6-16 parts of ethylene carbonate, 5-13 parts of polyisobutylene succinimide, 5-9 parts of triethylene tetramine, 1-6 parts of alkylphenol ethoxylates, 1-5 parts of cyclohexylamine and 1-5 parts of 2-2-ethylhexyl phosphonic acid mono-2-ethylhexyl acrylate. The fuel with the reduced particulate matter emission has the advantages that the fuel can be sufficiently combusted and is high in combustion efficiency, the particulate matter emission can be obviously reduced, harmful gas emission also can be obviously reduced, accordingly, energy can be saved, and environments can be protected.

The invention provides a method for recovering heavy metal from copper-containing sludge. The method comprises the following steps that rhizobium japonicum, pseudomonas onions and lactobacillus are mixed to prepare mixed bacterial powder, the copper-containing sludge is inoculated with the mixed bacterial powder, fermentation is conducted, and a fermentation product is obtained; and then a first part of concentrated hydrochloric acid, a phosphoric acid aqueous solution and a second part of concentrated hydrochloric acid are sequentially added into the fermentation product, stirring is conducted, a reaction is carried out, centrifuging is conducted, and then a supernatant and sediment I are obtained; the supernatant is replaced with excessive iron wires to obtain sediment II; and the sediment I is dissolved with concentrated hydrochloric acid for a reaction to obtain sediment III, and the sediment II and the sediment III are combined to obtain sponge copper. Heavy metal, especially copper, in the copper-containing sludge is recovered, and efficient resource utilization of the copper-containing sludge is achieved.

The invention discloses an electrochemical polishing solution suitable for 3D printing of titanium alloy, and belongs to the polishing technology. The electrolyte is formed by mixing potassium chloride, perchloric acid, citric acid, ethylene glycol, deionized water and an additive, and comprises the following components of, 40%-120 g/L of sodium chloride, 1%-10% of perchloric acid, 25-80 g/L of citric acid, 25%-40% of ethylene glycol, 2-10 g of an additive and the balance deionized water. The electrochemical polishing solution is mild in formula component, environmentally friendly, economical,simple, stable in performance, capable of being recycled under the condition that mother liquor is supplemented, high in cost performance, small in harm to the human body, environmentally friendly, low in corrosion to workpiece equipment, free of extreme temperature or voltage and current and the like and suitable for industrial production.