Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

916 results about "Soft water" patented technology

Soft water is surface water that contains low concentrations of ions and in particular is low in ions of calcium and magnesium. Soft water naturally occurs where rainfall and the drainage basin of rivers are formed of hard, impervious and calcium-poor rocks. Examples in the UK (United Kingdom) include Snowdonia in Wales and the Western Highlands in Scotland.

Method for synthesizing carboxyl butadiene-styrene latex used for cement group water-proofing material

This invention relates to a synthesis method for carboxylated styrene-butadiene latex used in the cement-based waterproof coating. The preparation method involves 30 to 50 shares of butadiene or isoprene isoprene, 30 to 55 shares of styrene, 0.1 to 5 shares of methyl acrylate , 1 to 5 shares of itaconic acid, 1 to 8 shares of n-butyl acrylate butyl acrylate, 1.2 to 2.8 hares of emulsifier, 0.3 to 1.2 hares of initiator potassium supersulphate, 0.2 to 0.8 shares of molecular weight regulator, 0.01 to 0.5 shares of pH buffer sodium bicarbonate, 0.01 to 5 shares of electrolyte, 0.01 or 5 shares of chelating agent ethylenediamine tetraacetic acid or endrate disodium and 100 to 150 shares of soft water for polymerization. The electrolyte is the combination of potassium phosphate and disodium hydrogen phosphate, with the ratio of 3 to 2: 1; in the polymerization reaction, monomer and a variety of agents are added with intermission. And reaction temperature control adopts the two-step laddered control. When the conversion rate reaches 99.0 percent, the mixture experiences the vacuum degassing treatment. The latex produced by the present invention is of good compatibility with the additives as the paint during the paint preparation. The prepared paint is of excellent fluidity, water retention and machinery stability under the high-cut condition. The improved mortar has the advantages of good permeability, high bond strength and so on.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Small-particle-size carboxylic styrene-butadiene latex and its preparation method

The invention belongs to the technical field of seed emulsion polymerization, relates to a preparation of a high polymer material, and especially relates to a small-particle-size carboxylic styrene-butadiene latex and its preparation method. Technical problems comprising unadjustable particle size, bad mechanical stability, bad chemical stability and the like of latexes in the prior art are solved in the invention. The preparation method which adopts a seed emulsion polymerization technology and adopts butadiene and styrene as monomers comprises the following steps: adding soft water, a seed latex, an electrolyte, a chelating agent and a pH buffering agent; heating; adding functional monomers, unsaturated carboxylic acid, a molecular weight adjustment agent, a composite emulsifier and an initiator; degassing when the conversion rate reaches above 98%; cooling; and synthesizing the carboxylic styrene-butadiene latex. Compared with the prior art, the preparation method of the small-particle-size carboxylic styrene-butadiene latex has the advantages of realization of the adjustment of the particle size of the latex, and simple operation; and compared with present carboxylic styrene-butadiene latexes, the carboxylic styrene-butadiene latex prepared in the invention has the advantages of narrow monodispersion, good fluidity, excellent mechanical stability and excellent chemical stability.
Owner:WEIFANG LANLI NEW MATERIAL CO LTD

Blow molded polyvinyl alcohol membrane and production method thereof

The invention provides a polyvinyl alcohol membrane. The polyvinyl alcohol membrane is produced through blow molding of melt-processible polyvinyl alcohol resin, the tensile strength of the polyvinyl alcohol membrane is not lower than 20 MPa, the melt-processible polyvinyl alcohol resin comprises effective amounts of polyvinyl alcohol, a plasticizer, soft water and a processing assistant, the degree of polymerization (DP) of the polyvinyl alcohol is 1000-3500, the degree of hydrolysis (DH) of the polyvinyl alcohol is greater than 72 (mol)% and is smaller than 99.9 (mol)%, the plasticizer is at least one of glycerol, polyethylene glycol and triethylene glycol di-2-ethylhexoate, and the processing assistant is at least one of talcum powder, silica, oleamide and saturated aliphatic dicarboxylate. The method has the advantages of simple process, less device investment, small occupied area, and realization of blow molding of normal-temperature, medium-temperature and high-temperature water soluble membranes. The method is mainly used for producing double-layer membranes, and the membranes can be directly processed to produce various water-soluble bags, and the water-soluble bags are used in the field of medium and low end packaging application, and can be used as a pesticide and chemical engineering product inner packaging liner bag, a hospital washing packaging bag and a refuse bag.
Owner:CHINA PETROCHEMICAL CORP +2

Melt extrusion-casting/calendering molded polyvinyl alcohol membrane and production method thereof

InactiveCN106189008ALower melt processing temperatureReduce processing temperatureFlat articlesProcedure AgentsPolyethylene glycol
The invention provides a polyvinyl alcohol membrane. The polyvinyl alcohol membrane is produced through casting or calendering molding of melt-processible polyvinyl alcohol resin, the tensile strength of the polyvinyl alcohol membrane is not lower than 25 MPa, the melt-processible polyvinyl alcohol resin comprises effective amounts of polyvinyl alcohol, a plasticizer, soft water and a processing assistant, the degree of polymerization (DP) of the polyvinyl alcohol is 1000-3500, the degree of hydrolysis (DH) of the polyvinyl alcohol is greater than 72 (mol)% and is smaller than 95 (mol)%, the plasticizer is at least one of glycerol, polyethylene glycol and triethylene glycol di-2-ethylhexoate, and the processing assistant is at least one of talcum powder, silica, oleamide and saturated aliphatic dicarboxylate. A production method of the polyvinyl alcohol membrane has the advantages of simple process, less device investment, small occupied area, and formation of normal-temperature and medium-temperature water-soluble membranes through melt extrusion casting/calendering. The method is mainly used for producing single-layer membranes which are applied to the fields of hydrographics transfer printing base membranes, printing paper hot melt adhesive membranes, agricultural membranes and other medium-and-high end products.
Owner:CHINA PETROCHEMICAL CORP +2

Multifunctional soft water valve for soft water supplement

The invention discloses a multifunctional soft water valve for soft water supplement, which comprises a valve body, a bonnet, an ejector, a fixed valve slice and a movable valve slice. The movable valve slice is connected with a valve rod. A water inlet, a water outlet, a sewage discharge outlet, an outer joint of a filter element, an inner joint of the filter element and a salt-absorbing inlet are arranged on the soft water valve. Flow channels for an ejector inlet and an ejector outlet are arranged inside the soft water valve. The multifunctional soft water valve for soft water supplement is characterized in that seven through holes including a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole, a sixth through hole and a seventh through hole are arranged on the fixed valve slice. Each through hole is respectively communicated with one of the water outlet, the ejector outlet, the ejector inlet, the outer joint of the filter element and the inner joint of the filter element. A water inlet channel, a conducting blind hole and a sewage discharge channel are arranged on the movable valve slice, the water inlet channel is communicated with the water inlet, and the sewage discharge channel is communicated with the sewage discharge outlet. The multifunctional soft water valve for soft water supplement has the advantages of capability of supplementing soft water to brine box, high flow rate, water and salt economization and environmental protection.
Owner:YUYAO YADONG PLASTIC

Method for producing cross-linking powder nitrile-butadiene rubber with medium and high nitrile content

The invention relates to a method for producing cross-linking powder nitrile-butadiene rubber with medium and high nitrile content; the method comprises the steps of synthesizing nitrile-butadiene rubber slurry, then flocculating the nitrile-butadiene rubber slurry followed by separating and powdering, and dehydrating and drying. In the stage of polymerization reaction, potassium carbonate is added to be a buffering agent of the reaction, and the mixed liquor of diethylhydroxylamine, hydroxylamine sulphate, potassium hydroxide and soft water is used as a composite terminator; in the stage of separating and powdering, WSL and DLTP are added to be an antiager, and univalent sodium salt and bivalent magnesium salt or univalent sodium salt or bivalent calcium salt are taken as a flocculant forcarrying out flocculating, separating and powdering on the nitrile-butadiene rubber slurry at 30-75 DEG C. The invention is simple in production technique, easy for operation, low in production cost,less in energy consumption and high in conversion rate which can be more than 95%; a novel composite terminator is adopted, so that mooney is stable and termination effect is good; the rubber powderis finer, and dispersity during processing is improved; and the heat-resistant quality of the product is very good, the wear resistance is good, and the invention can satisfy the requirement on application in high friction composite brake shoes of trains.
Owner:HUANGSHAN HUALAN TECH

Method for exploiting coal bed gas by hydraulic drilling and pressure relieving

The invention discloses a method for exploiting coal bed gas by hydraulic drilling and pressure relieving. The method comprises the following steps of: drilling a large-caliber well to the coal bed(9), building a coal bed gas exploitation well(1) capable of adding water, discharging water and discharging gas, making a sleeve pipe(2) arranged on the drilling well, and performing mechanical drilling at the bottom of the well; making a well-sealing device arranged on an opening of the coal bed gas exploitation well(1), and making a ground water pump(3), a coal-water separating device(4) and a gas storage device(5) arranged; distributing water-discharging devices(8) and flushing robots(6) on both sides in the coal bed gas exploitation well(1), wherein the flushing robots(6) are connected with the ground water pump(3) by soft water pipes and can continuously flush the coal down in caves at the bottom of the well to form a pressure relieving space(7); discharging the coal-water mixture to the coal-water separating device(4) by the water-discharging devices(8); and discharging the coal bed gas continuously generated by the coal bed(9) after pressure relieving to the gas storage device(5) by the coal bed gas exploitation well(1). The method has the advantages of easily solving the problem of early exploiting the coal bed gas in the coal mass with looseness, extremely low permeability and high bursting, eliminating bursting risk and lowering a gas content of the coal mass.
Owner:ZHENGZHOU UNIV +2

Technique for continuously producing high purity hydrogen by water electrolysis

The invention discloses a technology for continuously producing high-purity hydrogen by water electrolysis, which utilizes soft water deprived of dissolved air as a raw material and finally obtains a high-purity hydrogen product conforming to the national standard GB/T 7445 by electrolysis, catalytic deoxidization and adsorption dewatering. The main steps are as follows: (1) the deprivation of the dissolved air in water: a small amount of oxygen is adopted to carry out counter-current bubbling back blowing to the raw material water so as to deprive nitrogen and other dissolved gases in the water; (2) water electrolysis: an industrial electrolysis unit is used for electrolyzing the nitrogen-deprived soft water, and industrial electrolysis hydrogen is obtained from the cathode of an electrobath; (3) catalytic deoxidization: Pd or Pt is taken as a catalyst, and the H and O in hydrogen are electrolyzed to react and generate water; and (4) dewatering and drying: the molecular sieve constant pressure temperature swing adsorption technology is adopted to deprive the water in the hydrogen so as to obtain the high-purity hydrogen. The technology is the improvement of the existing industrial hydrogen producing technology by electrolysis, and can continuously produce high-purity hydrogen, with the advantages of low investment, no environment pollution and high hydrogen recovery rate.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND

Gasification dry dedusting technology

The invention discloses gasification dry dedusting technology which comprises the following technological steps: 1) the semi-water gas or the water gas from a normal-pressure or micro-positive pressure gasification furnace with gasification pressure of smaller than or equal to 0.1 MPa of smaller (gauge pressure) is dedusted by a cyclone dust collector to remove most of the dust, and then the gas enters a combined waste pot to exchange heat with soft water and saturated vapor to reduce temperature; 2) after temperature reduction, the semi-water gas or the water gas enters a soft water heater, the flow of the soft water is adjusted to reduce the temperature of the semi-water gas or the water gas going through the soft water heater once again; 3) after further temperature reduction, the semi-water gas or the water gas enters a bag-type dust collector to be dedusted and purified, wherein the air in the bag-type dust remover is replaced by inert gases; and 4) after fine dedusting, the semi-water gas or the water gas enters a spacing exchanger to reduce the temperature to 35-45 DEG C by a coolant and is prepared for producing or synthesizing ammonia or methanol. The technology has the advantages of avoiding the direct contact of the semi-water gas or the water gas with water, reducing the water consumption, enhancing the dedusting efficiency, protecting the environment, saving investment and operating expenses, and having great significance in environmental protection and large economic benefit.
Owner:CHINA NAT OFFSHORE OIL CORP +2

Multifunctional soft water valve

The invention discloses a multifunctional soft water valve, which comprises a valve body, a cover, an ejector, a fixed valve plate and a movable valve plate, wherein the soft water valve is provided with a water inlet, a water outlet, a drain outlet, a first filter core interface, a second filter core interface and a salt absorbing port; an ejector outlet and an ejector inlet are formed in the soft water valve; the fixed valve plate is provided with a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole and a sixth through hole; the first through hole is communicated with the first filter core interface; the second through hole is communicated with the fifth through hole, and is communicated with the second filter core interface; the third through hole is communicated with the ejector inlet; the fourth through hole is communicated with the ejector outlet; the sixth through hole is communicated with the water outlet; the first through hole is adjacent to the second through hole; the second through hole is adjacent to the third through hole; the third through hole is adjacent to the fourth through hole; and the movable valve plate is provided with a water inlet channel, a conduction blind hole and a pollution discharge channel. The multifunctional soft water valve has the beneficial effects of practicability, large flow, saving in salt, environment friendliness and prolonging of the service life of the valve body.
Owner:YUYAO YADONG PLASTIC

Corrosion and scale inhibition method for soft water closed circulation system

The invention discloses a corrosion and scale inhibition method for a soft water closed circulation system, and relates to the technical field of water treatment. The method comprises the following steps: A, regulating the pH value of a soft water closed circulation system to 8.5-10; B, adding deoxidizer into the soft water closed circulation system of which the pH value is regulated in the step A, wherein the addition concentration of the deoxidizer is 5-30 mg/L; and C, adding scale inhibitor and corrosion inhibitor into the soft water closed circulation system subjected to deoxidation treatment in the step B, wherein the addition concentration of the scale inhibitor is 1-100 mg/L, and the addition concentration of the corrosion inhibitor is 1-20 mg/L. According to the invention, soft water is deoxidized, and a tiny amount of scale inhibition component is added on the basis of deoxidation according to the mass of the soft water; the method is non-toxic and environment-friendly, and discharged water can not cause pollution to the environment even if the system leaks; the method is applicable to a high-temperature soft water system such as a blast furnace soft water system and the like; the method is low in cost; and the corrosion inhibition property is obviously enhanced to ensure that the method is superior to a molybdenum-phosphorus system formula commonly used at present.
Owner:LIUZHOU SHENGPENGYUAN ENVIRONMENTAL PROTECTION TECH CO LTD

Production method of vehicle top using wet treatment

The invention relates to a production method for vehicle top wet processing, in particular to a vehicle top which is mounted at the top part of the vehicle, plays the roles of heat isolation, sound isolation and beautification as well as belongs to the technical field of the interior decorating piece of the vehicle. The invention is characterized by selecting a PU material as the base material of the top, heating, rolling glues on the front surface and the back surface as well as spraying soft water on the PU material; laying a combination layer and cutting a roll type material; then pressing and forming, cooling and shaping, cutting by a water cutter and packaging into a box and warehousing after inspection. The production method of the invention realizes the performance indexes of the sound suction, heat resistance, light weight and high intensity of a top assembly, reaches the international top level of Grade three, greatly reduces the weight of the top, meets the requirements of the light weight design of the whole vehicle; during the working procedure of rolling glues, the PU material is adopted to carry out flow operation of glue rolling on the front surface and back surface, heating and shaping; the technique is stable; the rigidness of a product is high; besides, the product can not be broken or droop; no semi-finished products are accumulated during the process, thus saving the manufacturing cost; the whole production process of the product does not generate harmful matters; besides, the product belongs to environment-friendly product.
Owner:广州吉兴汽车内饰件有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products