41results about How to "Does not affect solubility" patented technology

The invention relates to a polymer mobility control agent suitable for a high-temperature and high-salinity harsh reservoir and a preparation method of the polymer mobility control agent, and the polymer mobility control agent is mainly used for solving the problems that the polymer in the prior art is poor in heat and salt resistance and long-term stability, and cannot meet the requirements of tertiary oil recovery. In order to better solve the problems, the technical scheme adopted by the invention is as follows: an amphoteric hydrophobic association polymer is prepared from the following raw materials in parts by weight: 5-99.9 parts of a non-ionic water-soluble monomer, 0-50 parts of an anionic monomer or/and cationic monomer, 0.1-10 parts of a hydrophobic monomer with surface activity, 0-20 parts of a viscosity stabilizer and 0-20 parts of a surfactant. The preparation method can be applied to industrial production and application of the polymer mobility control agent for the high-temperature and high-salinity harsh reservoir.

The invention relates to an oil displacing system for increasing oil recovery in high temperature high salt mid-low permeability oil reservoir, and a preparation method thereof, and aims to solve the problems that in the prior art, hydrophobic associated polymer can easily obstruct the holes of sandstone formation, the injection performance of oil displacing agent is bad in the immediate vicinity of wellbore, the oil displacing agent can only applied to mid-high permeability oil reservoirs, and the hydrophobic associated polymer can easily react with oil displacing surfactant to generate chromatographic separation. The oil displacing agent comprises the following components in parts by weight: 0.01 to 1 part of adsorption resisting agent, 0.05 to 3 parts of hydrophobic associated polymer, 0.2 to 5 parts of oil displacing surfactant, and 91 to 99.8 parts of water; wherein the adsorption resisting agent is one or more of nonionic surfactant and anionic surfactant. The provided oil displacing agent well solves the problems mentioned above, and can be applied to the onsite oil displacing in a mid-low permeability oil reservoir.

The invention relates to an oil-displacement composition with improved injectivity, and a preparation method and application thereof. The main objective of the invention is to overcome the problems of poor injectivity at zones near a well on site due to proneness to obstruction at pore throats of strata caused by strong adsorption effect of hydrophobic associated polymers on the surface of sandstone. The oil-displacement composition with improved injectivity comprises, by weight, 0.01 to 1 part of an anti-adsorption agent, 0.3 to 3 parts of a hydrophobic associated polymer and 96 to 99.69 parts of water, wherein the anti-adsorption agent is at least one or a mixture of two or more selected from a group consisting of nonionic surfactants and anionic surfactants. The oil-displacement composition provided by the invention perfectly overcome the above-mentioned problem and can be used for on-site injection of a polymer fluidity control agent into a high-temperature high-salt severe oil reservoir for oil displacement.

The invention discloses a woody flower nutrient solution. 100 to 260 parts of calcium nitrate, 50 to 160 pars of potassium nitrate, 8 to 32 parts of borax and 2 to 18 parts of rare earth are measure to be sequentially mixed and dissolved in 600 to 1000 parts of clean water with pH value of 4.5 to 6.0, and then 1 to 4 parts of film-forming agent water solution is added to be mixed to a homogenous solution so as to obtain the product. The woody flower nutrient solution is free from containing hormone, agricultural chemicals and substances which are harmful to the environment, and is safe and reliable. The moisture and penetration of the fertilizer on the surface of the woody flower leaves can be remarkably improved, the absorption of Ca can be improved, the utilization rate of the fertilizer can be improved, the nutrient elements can be instantly compensated during the crucial growth period of the woody flower, the growth and the flowering of the crops can be promoted, and the floweringphase can be prolonged. The product has the advantages of high concentration and high stability and is applicable to the storage and the transportation.

The invention discloses a waterproof breathable water-soluble protective material, and relates to the technical field of protective products. The waterproof breathable water-soluble protective material comprises a water-soluble spunbond base material and a hydrophobic coating, or the waterproof breathable water-soluble protective material comprises the water-soluble spunbond base material, the hydrophobic coating and a barrier layer, the raw material of the water-soluble spunbond base material is selected from at least one of polyvinyl alcohol, water-soluble cellulose, polyethylene glycol and water-soluble chitosan, the hydrophobic coating is selected from at least one of a fluorine/silicon resin material, alkoxy silane and an inorganic nano material; and the barrier layer is selected from at least one of a water-soluble melt-blown non-woven fabric, a water-soluble centrifugal spinning non-woven fabric, a water-soluble swelling non-woven fabric and a water-soluble electrostatic spinning non-woven fabric. The waterproof breathable water-soluble protective material is high in barrier efficiency and good in air permeability, and can effectively solve the problem that the protective performance and the air permeability of the existing water-soluble protective material cannot be achieved at the same time.

The present invention discloses a levodopa preparation. The levodopa preparation comprises the following components, 13-36 wt% of levodopa, dopa decarboxylase inhibitor in weight ratio of 1: (4-10) tolevodopa, arginine in ratio of (0.3-1.0) to total moles of levodopa and dopa decarboxylase inhibitor, meglumine in ratio of (0.05-0.8): 1 to total moles of levodopa and dopa decarboxylase inhibitor,pH regulator used for adjusting pH of solution to 9.6-10, 0.01-1 wt% of antioxidant, 0.01-0.5 wt% of EDTA and balance of water. The levodopa preparation is a high-concentration solution preparation, and the unit volume of the preparation can be reduced to 3 mL. The levodopa preparation can be used in combination with the second generation of patch pump to improve the use convenience and medicationcompliance in patient treatment. The invention also discloses a preparation method and an application of the levodopa preparation.

The present invention is menthol water dissolving technique in daily chemical and medicine technology field. Tween-80 in certain ratio is used as solabilizer to make liposoluble menthol become water soluble, and this expands the application range of menthol to oral cavity refreshing spray, mouth wash, beverage, externally applied prickly heat water, etc. The present invention has the features of safety, no toxic side effect and convenient use.

The invention discloses a high-concentration levodopa preparation. The high-concentration levodopa preparation comprises the following components: 13-36% of levodopa by weight, a dopa decarboxylase inhibitor with a weight ratio of 1:(4-10) to levodopa, arginine with a molar ratio of (0.4-1):1 to the sum of the mole number of levodopa and dopa decarboxylase inhibitor, meglumine with a weight ratioof (0.5-0.65):1 to arginine, a pH regulator for adjusting the pH value of a solution to 10.1-10.9, 0.01-1% of an antioxidant by weight, 0.01-0.5% of EDTA and the balance water. The high-concentrationlevodopa preparation is a high-concentration solution preparation, the volume of the preparation per unit can be reduced to 2 mL, the preparation can be combined with an infusion pump of the smallestvolume, and the preparation can be carried and used for 24 hours conveniently and continuously by patients, so that use convenience and medication compliance of patient treatment are improved greatly.The invention also discloses a preparation method and application of the high-concentration levodopa preparation.

A welding sealing method for preventing crevice corrosion from being generated between an iron anode and a copper alloy flange comprises the annular iron anode and the copper alloy flange, the peripheral surface of the annular iron anode is embedded into a center hole of the copper alloy flange in a matched mode, and the two ends of the annular iron anode and the two ends of the copper alloy flange are flush with each other. The welding sealing method is characterized in that the contact interfaces of the two ends of the annular iron anode and the copper alloy flange are subjected to welding sealing. The welding sealing method has the advantages that the contact faces between the iron anode and the cooper alloy flange are sealed and protected in a welding mode, the phenomenon of water seepage through the contact faces is avoided, the problem of crevice corrosion is solved thoroughly, it is ensured that the iron anode can reach the required and designed service life, and the dissolving property of the iron anode in seawater and the protection function and effect of the iron anode to a seawater pipeline are not affected in the protection validity period.

The invention relates to a method for detecting the concentration of chloride ions in turbid formation liquid. The method for detecting the concentration of the chloride ions in the turbid formation liquid comprises the following steps: (1) taking the turbid formation liquid as a test liquid, centrifuging, and layering the solution; (2) adding a reagent 1 into the layered upper-layer solution, uniformly shaking, heating in a water bath, and cooling to room temperature; (3) adding a reagent 2 into the cooled reaction solution, uniformly mixing, fixing the volume, and standing; (4) preparing a chloride ion standard solution with known concentration, and treating by adopting the method in the step (1) and the step (3); (5) comparing the turbidity of the treated test solution with the turbidity of the chloride ion standard solution to obtain the chloride ion concentration in the turbid formation solution. According to the method for detecting the concentration of the chloride ions in the turbid formation liquid, a traditional visual turbidimetry is improved, suspended solids in the formation liquid are eliminated, interference of the suspended solids in the formation liquid on detection of the concentration of the chloride ions is reduced, and the accuracy of detection of the concentration of the chloride ions in the formation liquid is improved.

The invention discloses an energy-saving preparation method of low-ingredient xylo-oligosaccharide powder. The method comprises the following steps: (1) concentrating an xylo-oligosaccharide solution, of which the mass concentration is 1-6%, through triple-effect concentration until the mass concentration is 15-25%, wherein the content of xylo-oligosaccharide in the xylo-oligosaccharide solution is 65-75%; (2) concentrating the xylo-oligosaccharide solution, of which the mass concentration is 15-25%, through scraper evaporation until the mass concentration is 55-85%, wherein for the scraper evaporation, the temperature is controlled to 90-120 DEG C, the evaporating pressure is -0.08 to -0.098MPa, the discharging temperature is controlled to 85-115 DEG C, and the revolving speed of scrapers is controlled to 3-5m/s; (3) directly feeding the xylo-oligosaccharide solution obtained in the step (2) into a vacuum belt drier for evaporation drying and crushing, thereby obtaining the low-ingredient xylo-oligosaccharide powder without excipient. The preparation method disclosed by the invention has the advantages that the time for high-temperature concentration is shortened, the generation of pigments is reduced, and the chromaticity of xylo-oligosaccharide is lowered; the excipient is not added to the xylo-oligosaccharide powder, so that the solubility of the product is improved, the taste of the product can be genuine, and the range of use of the xylo-oligosaccharide powder is enlarged.

The invention provides a granular macroelement water-soluble fertilizer. The granular macroelement water-soluble fertilizer comprises nitrogen fertilizers, phosphorus fertilizers, potassium fertilizers, trace element fertilizers and ATOP solution. The ATOP solution accounts for 3%-5% of the total quantity of the granular macroelement water-soluble fertilizer and is compound solution of polyhydroxyl aldehyde, water-soluble binders and dispersing agents, and a mass ratio of water to the polyhydroxyl aldehyde to the water-soluble binders to the dispersing agents is (55-65):(35-45):(0.8-1.2):(0.8-1.2). The invention further provides a method for preparing the granular macroelement water-soluble fertilizer. The granular macroelement water-soluble fertilizer and the method have the advantages that macroelement water-soluble fertilizers can be granulated by the aid of the ATOP solution, components in the high-content granular macroelement water-soluble fertilizer manufactured by the aid of the method can be completely dissolved in water, accordingly, the solubility of the granular macroelement water-soluble fertilizer can be improved, the granular macroelement water-soluble fertilizer canbe quickly dissolved and absorbed after being applied by users, the utilization rate of the granular macroelement water-soluble fertilizer can be increased, the lasting time of the granular macroelement water-soluble fertilizer can be prolonged, and nutrients can be persistently supplied; the granular macroelement water-soluble fertilizer is convenient to use, top dressing can be particularly pertinently carried out by the granular macroelement water-soluble fertilizer for planting fruit trees, labor force can be reduced, and the labor cost can be saved.

A method for extracting and separating high-purity polysaccharides from plant flowers is disclosed and comprises the following steps: (1) drying fresh plant flowers, adding an alcoholic solution withthe concentration of more than or equal to 80%, soaking, and carrying out residue-liquid separation, (2) removing the solvent from the obtained alcoholic solution to obtain a crude flavone product, removing the solvent from the obtained residues, adding a salt solution with the saturation degree of 35-57%, and repeatedly extracting to obtain an extracting solution, (3) combining the extracting solutions, and sequentially passing through cation exchange resin, anion exchange resin and lower column water to obtain a crude polysaccharide aqueous solution, (4) adding n-butyl alcohol into the crudepolysaccharide aqueous solution for repeated extraction, combining n-butyl alcohol layer solutions and concentrating to obtain a water-soluble saponin product, combining water layers, concentrating and evaporating water, adding ethanol for precipitation, separating precipitate, and drying to obtain a polysaccharide product. According to the method, the problem of removing protein in the polysaccharide solution can be solved, crude products of medicinal components such as flavone and water-soluble saponin can be obtained through separation, and high-content polysaccharide substances can be obtained.

The invention discloses a plastic packaging film for production of laundry gel beads as well as a preparation method and application of the plastic packaging film. The improved plastic packaging film is prepared from the following raw materials in parts by weight: 80 to 100 parts of polyvinyl alcohol, 0.1 to 0.5 part of a regulator, 0.1 to 0.5 part of a plasticizer, 0.1 to 0.2 part of compound polylactic acid, 0.2 to 0.5 part of a neutral drying agent, 0.1 to 0.5 part of a bitter agent, 0.05 to 0.2 part of an antistatic agent and 0.1 to 0.5 part of a stabilizer, wherein the regulator is a mixture of any one selected from itaconic acid, acrylic acid and maleic acid and sulfonic acid salt. According to the invention, on one hand, the acid and alkali resistance of the plastic packaging film can be improved, and on the other hand, the alcoholysis degree range of polyvinyl alcohol can be widened; and meanwhile, the energy-saving and efficient melt blow molding preparation method is matched for use, so the problems that a plastic packaging film is dissolved slowly and incompletely when meeting water are solved, production cost is reduced, storage and use are convenient, and then, clothes washing efficiency is improved.

The invention discloses a new aluminum electobath anode configuration scheme, including an aluminum electrobath, an anode carbon block and feeding points. The invention is characterized in: (1) all the feeding points are arranged on the junction points of four groups of anode carbon blocks; (2) the gaps of anode carbon blocks of the adjacent two groups at the feeding points are widened; while the gaps of anode carbon blocks of the adjacent two groups at the non-feeding points are narrowed; and (3) the four corner of the anode carbon blocks at the feeding points are cut off, so that the feeding points has a large space. The invention also discloses an anode carbon block as an embodiment of the new aluminum electrobath anode configuration scheme, which is characterized in that two corners of one end of the long axis of the carbon block are cut off. The invention is simple, easy to operate, as well as has remarkable effect; since the effective working area of anode is increased, consumption of yield per unit is saved and yield per unit area of the electrobath is increased.

The invention discloses a method for detecting the acidity of cream. According to an existing method for detecting the acidity of the cream, extra water is not added into a to-be-titrated cream sample mixture, water addition is bad for cream dissolution and the accuracy of determining the acidity of the cream is affected since the cream is not readily soluble in water on the basis of common knowledge in the field. However, an inventor adds an appropriate amount of water in the process of preparing the cream sample mixture for the first time, the solubility of the cream is not affected, the color change stability of phenolphthalein is improved and the retention time of an end color is prolonged and can be up to over 30s. Meanwhile, the shaking degree in the titration process is not specifically requested in water addition, finally the end color is easy to recognize, the determination difficulty on the acidity of the cream is reduced and the accuracy of the acidity is improved.