481results about How to "Shorten the dissolution time" patented technology

The invention belongs to a technique for analyzing elements of an alloy, and relates to a method for measuring the contents of aluminum, titanium, manganese, nickel, tungsten and iron in a cobalt-base alloy. The method adopts an inductively coupled plasma atomic emission spectrometer and is different according to different measured elements and different tungsten contents; when high-content tungsten is dissolved, the volume of test solution needs to be maintained between 20 and 40 mL, or the tungsten is easy to be separated out; by performing interference experiments and spectrogram analyses, the method finds the optimal analytical line, overcomes the interferences caused by a plurality of elements such as major elements of cobalt, chromium, tungsten and the like in the cobalt-base alloy, and improves the measuring accuracy; the sample dissolving speed is accelerated, and the sample dissolving time is shortened to 2 hours from about two or three days; and the method has wide measuring ranges including: 0.05 to 0.30 percent of the aluminum, 0.05 to 0.30 percent of the titanium, 0.05 to 1.00 percent of the manganese, 0.05 to 24.00 percent of the nickel, 0.05 to 20.00 percent of the tungsten, and 0.05 to 3.00 percent of the iron.

The invention discloses laundry liquid and a preparation method thereof. The laundry liquid is prepared by the following materials in percentage by mass: 0.1 to 5.0 percent of oleophylic modified polymer, 0.2 to 5.0 percent of carboxylic acid polymer, 1 to 25.0 percent of nonionic surfactant, 1 to 25.0 percent of anionic surfactant, 0.01 to 1.5 percent of enzyme, 0.1 to 15.0 percent of enzyme stabilizer, 0.5 to 8.0 percent of foam control agent, 0.5 to 10 percent of other auxiliary agents and the balance of water. By the preparation method of the laundry liquid, the production time can be reduced by about 30 percent, and the laundry liquid is efficiently produced; and the prepared laundry liquid has high detergency to mud and oil stains and high stain redeposition resistance.

A hair relaxer includes at least one specific mercapto compound such as 2-methoxyethyl 3-mercaptopropionate, 2-mercapto-4-butanolide and 2-mercapto-4-butyrolactam. The hair relaxer can achieve an excellent effect of shaping and relaxing hair over a wide range of pH values from weak acidity to weak alkalinity. In particular, the hair relaxer displays a more superior hair shaping and relaxing performance in a weakly acidic to neutral pH range. Consequently, the hair relaxer can drastically reduce the damage to the hair and skin and can reliably perform straightening, uncurling, curling and other hair processing.

The invention discloses an anionic polyacrylamide water-in-water emulsion water shutoff profile control agent, and a preparation method and a using method thereof. The anionic polyacrylamide water-in-water emulsion water shutoff profile control agent consists of an anionic polyacrylamide water-in-water emulsion and a cross-linking agent. The preparation method comprises the following steps: adding deionized water, a stabilizing agent, part inorganic salts, nonionic monomers, anionic monomers, a chelating agent and (a chain transfer agent) into a reaction container, stirring uniformly, adjusting the pH value to a suitable range, introducing nitrogen to remove oxygen, adding an initiator to initiate a reaction, adding the remaining part inorganic salts in a reaction process, preserving heat, and discharging materials to obtain the anionic polyacrylamide water-in-water emulsion. The using method of the anionic polyacrylamide water-in-water emulsion serving as a water shutoff profile control agent comprises the following steps: diluting the water-in-water emulsion on situ or on line to prepare a uniform aqueous solution with a certain concentration, adding a certain amount of the cross-linking agent under the condition of stirring, stirring uniformly and injecting the aqueous solution into a stratum to realize the purpose of improving crude oil recovery rate.

The invention relates to the technical field of batteries, in particular to a lithium ion battery and a preparation method thereof. The lithium ion battery is characterized in that the lithium ion battery comprises a positive plate, a negative plate, a diaphragm, an electrolyte and a battery housing. The positive plate comprises a positive current collector and positive slurry, and the negative plate comprises a negative current collector and negative slurry, wherein the ratio of the capacity of the negative plate to the capacity of the positive plate is 1.41-9.41. According to the lithium ionbattery, the ratio of the capacity of the negative plate to the capacity of the positive plate in the battery is optimized, the surplus capacity is supplemented through a lithium supplementing technology, and the parameters of the positive plate and the negative plate are optimized, so that the cycle performance, the safety performance and the rate charging performance of the lithium ion batteryare improved, and the lithium ion battery has the characteristics of high rate and long service life.

The invention provides a water-in-oil associated non-crosslinked fracturing fluid concentrating and thickening agent, which is prepared from the following components in percentage by mass: 25-50wt% of a dispersion medium, 18-40wt% of a disperse phase, 20-40wt% of a hydrophobic associated polymer fracturing fluid thickening agent and 2.5-6wt% of a compound emulsifier, wherein the dispersion medium is an organic solvent incompatible with water; the disperse phase is water; the compound emulsifier is the compound emulsifier compounded by an emulsifier of which the HLB value is 3-7 and an emulsifier of which the HLB value is 8-10; and the sum of the content of various components is 100wt%. The stabilization time of the prepared concentrating and thickening agent is greater than 120d and the dissolution time is smaller than 1min. The solution property of the fracturing fluid prepared from the concentrating and thickening agent is superior to that of the fracturing fluid which is directly prepared from corresponding fracturing fluid thickening agent dry powder.

The invention provides a method for detecting the zirconium content in tantalum-cobalt-base alloy in a microwave solution sample dissolving manner. The method comprises the analyzing steps of: weighing a sample; preparing a sample solution; preparing a calibration solution; drawing a working curve; measuring the concentration of zirconium in the sample solution; and calculating a measurement result, so as to obtain the zirconium content. The problems that the sample is difficult to dissolve, a measurement spectral line is interfered seriously and the like can be overcome, so that the sample dissolving speed is greatly accelerated; the spectral interference of a base body on measurement elements can be avoided by base body matching; and the accuracy of the measurement is improved. The method has the advantages of rapid sample solution and measurement, simplicity and convenience in operation, and good labor and material saving performance.

An oral disintegrating tablet of paracetamol is prepared from paracetamol, water-soluble filler, disintegrant, lubricant, and wetting agent or adhesive.

The invention provides a heat-resistant and salt-tolerant polymer oil-displacing agent and a preparation method thereof. The heat-resistant and salt-tolerant polymer oil-displacing agent has the structure shown in the formula (I) (in the description); both a structural unit, namely a structural unit of sulfonic acid containing a phenyl group and hydroxyl groups, shown in the formula (I-1) (in the description) and a structural unit of sodium-3-acrylamido-3-methylbutanoate are introduced onto a polyacrylamide molecular main chain, so that the heat-resistant and salt-tolerant polymer oil-displacing agent has good high temperature resistance and salt tolerance when being applied to polymer flooding in an oil field; when acting on a high-temperature or high-salinity oil reservoir of which the temperature is higher than 80 DEG C and the formation water salinity is greater than 30000 mg.L<-1> (Ca<2+> and Mg<2+> are greater than 1665 mg.L<-1>), the polymer oil-displacing agent has the advantage that the oil recovery ratio is greatly increased in comparison with other polymer oil-displacing agents under the same conditions, so that an effective solution is provided for further improvement of the polymer flooding effect.

The present invention relates to nicotine lozenge compositions comprising reduced levels of buffering agents from traditional nicotine lozenges and which provide optimal oral pH and prompt nicotine absorption in a smaller, more convenient dosage form.

The invention relates to the technical field of pharmaceutical preparation, in particular to an orally disintegrating tablet containing imatinib mesylate and a method for preparing the same, wherein the orally disintegrating tablet comprises effective amount of the imatinib mesylate and a pharmaceutic adjuvant which is acceptable in pharmacy and can rapidly collapse and release drugs in an oral cavity. The orally disintegrating tablet containing the imatinib mesylate has the advantages of faster action speed compared with the prior tablets and capsulated drugs, has convenient use and good taste in taking, and is more suitable for children, the elderly, and patients who can not swallow solid medicines.

Disclosed is a method for preparing high purity biodiesel from crude oils. The method comprises the steps of: pre-treating the crude oil raw material to remove impurities; pre-esterifying the pre-treated crude oil raw material under the effect of a catalyst of concentrated sulfuric acid; and then carrying out an ester exchange reaction in the presence of an alkali catalyst; recycling methanol, and separating glycerol, so as to obtain a crude fatty acid methyl ester; and subjecting the obtained fatty acid methyl ester to purification, distillation and segmentation to obtain a high-purity fatty acid methyl ester.

The invention relates to an extraction method for laetrile. Hypercritical carbon dioxide is adopted to be added with an absolute ethyl alcohol entraining agent; in hypercritical carbon dioxide equipment, extraction is carried out to bitter almond meal after degreasing in an extraction kettle; then primary separation, secondary separation and low-temperature crystallization are carried out, and a crude product of the laetrile is obtained. After the crude product of the laetrile is dissolved by using absolute ethyl alcohol secondarily, the temperature is reduced to minus 3 DEG C to 4 DEG C, thus obtaining a fine product of the laetrile. The extraction method for the laetrile has simple and convenient extraction procedure, short extraction time, target products with high yield and low overall cost; the products do not have harmful residual solvents.