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148 results about "Sodium polyaspartate" patented technology

Sodium polyaspartate is a sodium salt of polyaspartic acid. It is biodegradable condensation polymer based on the amino acid aspartic acid.

Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof

The invention relates to a neutral blockage removing agent composition used for an oil recovery formation in an oilfield. The neutral blockage removing agent composition is prepared from the following raw materials in parts by weight: 10-14 parts of polyepoxysuccinic acid amine, 35-40 parts of diethylenetriaminepentaacetic acid amine, 33-37 parts of hydroxyl succinic acid amine, 20-25 parts of polyacrylamide, 7-10 parts of sodium polyaspartate, 10-14 parts of sodium gluconate, 10-15 parts of activated clay, 20-25 parts of potassium peroxodisulfate, 9-11 parts of hydroxyl butanedioic acid amine, 4-7 parts of sodium salicylate, 5-9 parts of hexamethylene tetramine, 0.2-0.3 part of vanadium pentoxide, 2-5 parts of starch, 5-8 parts of alpha-sulphonated fatty acid methyl ester and derivative thereof (MES) and 0.1-0.3 part ofdiethyl ethanolamine. The neutral blockage removing agent composition is used for the blockage removal of an oil pumping well and a screw pump well in the oilfield, can effectively solve the problems of cleaning blockage removal of the oil pumping well and the screw pump well in the oilfield and the corrosion of oil recovery equipment, has high blockage removing speed, is neutral and is free of corrosion; waste liquid for blockage removal can be degraded and does not need to be discharged onto the ground to be subjected to sewage treatment, no corrosion, dead angle, precipitation or secondary well blockage are generated, and more safety and more reliability are realized as compared with traditional pickling blockage removing, biological blockage removing and solvent blockage removing.
Owner:兰州熙瑞化工科技有限公司

Coated slow-release compound fertilizer containing oxidized graphene

The invention relates to the field of compound fertilizers, in particular to a coated slow-release compound fertilizer containing oxidized graphene. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1,250-2,000-mesh diatomite, 0.1-0.2 part of gibberellins, 20-24 parts of potassium dihydrogen phosphate, 10-12 parts of silkworm excrement, 8-10 parts of sawdust, 15-18 parts of diphosphorus pentoxide, 6-8 parts of sodium polyaspartate, 10-12 parts of a calcium magnesium phosphate fertilizer, 8-12 parts of peat soil, 2-4 parts of ferrous sulfate, 9-13 parts of potassium fulvate, 15-18 parts of decomposed cattle manure, 2-4 parts of withered persimmon leaves, 1-2 parts of sodium molybdate, 10-12 parts of wheat straw powder, 1-2 parts of oxidized graphene, 3-4 parts of fructooligosaccharides, 20-25 parts of waterborne polyurethane emulsion, 1-2 parts of an epoxy silane crosslinker and 4-5 parts of an assistant. According to the compound fertilizer, various raw materials are used; multiple nutritional ingredients are provided; the nutritional ingredients are coated with diatomite and a slow-release coating agent, so that the nutrient loss is hardly caused, the fertilizer efficiency lasts for a long time, the crop yield and the crop quality can be remarkably improved, and the planting benefit is relatively high.
Owner:HEFEI CHANGRUN AGRI TECH

Composite scale inhibitor as well as preparation method and application thereof

The invention discloses a composite scale inhibitor, comprising sodium polyaspartate and hydroxy-ethylidene-di-phosphonic acid in the mass ratio of 1:20-1:1. The composite scale inhibitor can be prepared by mixing the sodium polyaspartate with the hydroxy-ethylidene-di-phosphonic acid according to the mixture ratio, adjusting the pH value to be 1-5 and uniformly stirring. The composite scale inhibitor is applied to equipment for preparing salts and is especially suitable for mirabilite type brine vacuum equipment for preparing salt; and when the composite scale inhibitor is applied, the addition of refined brine water is 5-25mg/L. The binary composite scale inhibitor has favorable scale inhibiting effect and corrosion inhibiting effect, thereby effectively preventing the system and the equipment for preparing salts from being scaled due to the continuous enrichment of calcium and magnesium ions in the mirabilite type brine water; and the scale inhibiting rate is over 94 percent. Whenin use, the composite scale inhibitor is simple for preparation, convenient for operation and relatively low in cost, so that the composite scale inhibitor has favorable practicability and the use value.
Owner:自贡市轻工业设计研究院有限责任公司 +1

Production method of multielement microelement amino acid chelating fertilizer

The invention discloses a production method of a multielement microelement amino acid chelating fertilizer and relates to the manufacturing of fertilizers for agriculture, particularly a preparation method of a common microelement chelating fertilizer for crops. By using sodium polyaspartate as a chelating agent, the microelement chelates and a macroelement fertilizer are combined to produce the fertilizer. The obtained fertilizer is applied to soil and dissolved, and the microelements are driven by the osmotic pressure caused by absorption of the macroelements to be close to the root system, so that the absorption efficiency is remarkably improved; in addition, the different microelement chelates are respectively synthesized in different reaction kettles and controlled by using a flowmeter and added to the fertilizer according to the required proportion, so that the flexibility of the microelement formula is guaranteed to be suitable for different requirements of different crops in different regions. According to the production method disclosed by the invention, different microelement chelates mixed in a buffer tank enter into a compound fertilizer granulating device through an atomizing distributor so as to ensure that the different microelements and the microelements and macroelements are uniformly mixed, so that the fertilizer application effect is guaranteed.
Owner:SINOFERT HOLDINGS

Composite resistivity silicon scale inhibitor for preventing silicon dioxide dirt deposition in industrial water conditioning system

InactiveCN100545212CAvoid depositionReduce the total concentration usedScale removal and water softeningDiethylenetriamineAdipic acid
The invention belongs to the technical field of industrial water treatment, and specifically relates to a composite silicon dioxide scale inhibitor for preventing the deposition of silica scale in industrial water treatment systems, that is, adding adipic acid / amino-terminated polysaccharides to industrial water treatment systems Composite silicon and scale inhibitor of ether / diethylenetriamine copolymer and sodium polyaspartate, the weight ratio of adipic acid / amino-terminated polyether / diethylenetriamine copolymer to sodium polyaspartate is 10 : 1 to 2: 1, so that the two polymers can exert a stable and synergistic effect of preventing the deposition of silica scale in the industrial water treatment system. The adipic acid / amino-terminated polyether / diethylenetriamine copolymer used in the present invention is a nonionic polymer containing ether bonds, secondary amine bonds, and peptide bond structures, and has the function of obviously preventing the deposition of silica scale in water . The sodium polyaspartate used in the composite silicon and scale inhibitor of the present invention can significantly improve the effect of adipic acid / amino-terminated polyether / diethylenetriamine copolymer for preventing the deposition of silicon scale. The invention provides a phosphorus-free, biodegradable, environment-friendly method for preventing the deposition of silicon scale in an industrial water treatment system.
Owner:TONGJI UNIV

Slow release fertilizer special for fruit trees and preparation method thereof

The invention relates to a slow release fertilizer special for fruit trees and a preparation method thereof and belongs to the technical field of the fertilizer. The technical problem to be solved is to provide the slow release fertilizer special for fruit trees. The technical scheme adopted for solving the technical problem is as follows: the slow release fertilizer special for fruit trees is composed of an inorganic core material and an organic packaging material; the inorganic core material comprises the following components in parts by weight: 20-30 parts of ammonium bicarbonate, 10-15 parts of urea, 10-15 parts of calcium oxide, 10-15 parts of monopotassium phosphate, 3-5 parts of magnesium sulfate, 3-5 parts of zinc sulfate and 3-5 parts of manganese sulfate; the organic packaging material comprises the following components in parts by weight: 30-40 parts of animal dung, 5-8 parts of buddleia, 3-5 parts of wintergreen oil, 3-5 parts of shrimp shell powder, 3-5 parts of fishbone dust, 3-7 parts of waste bacteria stick, 4-7 parts of ultrafine coal ash, 4-7 parts of sodium polyaspartate, 3-5 parts of glycine, 3-5 parts of cysteine, 3-5 parts of nicotinamide and 0.05-0.2 part of yeast. The slow release fertilizer special for fruit trees provided by the invention can obviously increase the sugar content and can improve the crop quality. The slow release fertilizer special for fruit trees can be widely applied to the field of the fruit tree fertilizer.
Owner:YICHENG COUNTY JINGHUA AGRI FORESTRY & ANIMAL HUSBANDRY COMPREHENSIVE DEV
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