2299 results about "Sodium lignosulfonate" patented technology

The invention relates to a method for preparing an aromatic compound by direct catalytic cracking of lignin. Under the combined action of a catalyst and a solvent, industrial lignins such as natural lignin, sodium lignin sulfonate, alkali lignin and dealkalized lignin are used as raw materials and are selectively cracked into the aromatic compound derived from C6-C9 phenolic group, guaiacol group or syringyl through the catalytic process. The conversion rate of the raw materials reaches over 50%, and the guaiacol group and the syringyl aromatic compound account for over 90% in a cracking product. The method has the characteristics of cheap raw materials, high conversion rate, high yield of the aromatic compound and mild reaction condition.

The invention provides an environment-friendly silt curing agent, which is manufactured through the following steps: one or two among fly ash, calcium sulfate, sodium sulfate, sodium carbonate and potassium carbonate, one or two among slag, slag combination, potassium hydroxide, calcium oxide, sodium silicate or silicon dioxide, one or two among carbide slag, lime or gypsum, as well as one or two among triethanol amine surfactant, calcium lignosulfonate or sodium lignosulfonate form a plurality of optimal compound formulations according to respective attributes, are optimized, compounded, ground till the Brinell specific surface areas are between 300 and 900 m2/kg respectively and then mixed, wherein particle sizes are between 0.00040 and 0.5 mm. As a large amount of waste is utilized, the curing agent saves raw materials, solves the problems about waste discharge and environmental pollution, controls waste through waste, and has important significance to environmental protection. The invention aims to provide the environment-friendly silt curing agent which has strong adaptability to a plurality of types of silt and soil, is good in curing effect, good in durability after curing and capable of utilizing industrial waste, and can be widely applied to fill engineering, embanking or embankment reinforcement engineering, road engineering and other fields.

The invention relates to a non-bleeding concrete pumping admixture with high durability and high slump retaining, the raw material weight percentage composition of which is: 25 to 45 percent of naphthalene series water reducer, 2 to 6 percent of polycarboxylic series of water reducer, 1 to 4 percent of sodium lignosulfonate, 0.5 to 2 percent of sodium gluconate, 0.2 to 2 percent of triterpenoid saponin, 0.5 to 3 percent of carboxymethyl cellulose, 0.2 to 1 percent of silicon oil, and 40 to 65 percent of water; the non-bleeding concrete pumping aid with high durability and high slump retaining has the advantages of low slump loss and low cost, no bleeding, restraining the shrinkage of concrete, and controlling the fissure of concrete.

An effective conditioner-fertilizer of low and competitive cost particularly formulated for restoring or improving the cultivation properties and productivity of saline or alkaline soils, comprising: a) a chelating substance, for example sodium tripolyphosphate; b) a pH modifying or buffering substance, for example an inorganic acid; c) a surfactant, for example polyethylenglycols; and optionally, d) a plant nutrient substance, for example humic extracts which can advantageously derived from the pecan husk. The synergistic combination of polyphosphates, pH modifying and buffering substances and surfactants in the conditioner-fertilizer formulation significantly improves its effectiveness at a competitive cost. Other ingredients may also be added, for example, sodium lignosulphonate, calcium lignosulphonate and the like for modifying the physical structure of soils. The conditioner-fertilizer can be applied directly to the soil before plantation, mixed with the irrigation water or to the leaves during plant growth.

The invention relates to a liquid cement grinding aid which can obviously reduce the dosage of trolamine and does not contain urea. The grinding aid comprises the following compositions in weight percentage: 1 to 10 percent of trolamine, 5 to 10 percent of diglycol, 1 to 10 percent of trimeric sodium phosphate, 10 to 30 percent of molasses, 0 to 20 percent of sodium thiosulfate, 0 to 10 percent of air entraining component and the balance being water, wherein the air entraining compositions are triterpenoid saponin air entraining agent, sodium lignin sulfonate or a mixture of the triterpenoid saponin air entraining agent and the sodium lignin sulfonate at any proportion. The invention obviously reduces the dosage of the trolamine, does not contain the urea, lowers product cost and simultaneously facilitates the environmental protection. The sodium thiosulfate has the function of exciting mixed materials of cement and can improve the initial strength and the later strength of the cement, thereby effectively improving the service performance of the cement grinding aid. The triterpenoid saponin air entraining agent and the sodium lignin sulfonate have the action of the auxiliary aided grinding and simultaneously properly entrain air to reduce the water consumption of the cement standard consistence.

The invention relates to calcium carbonate filler, and specifically relates to wear-resistant surface modified calcium carbonate filler. The modified calcium carbonate filler is prepared from the following raw materials in parts by weight: 200 parts of calcium carbonate powder, 1-2 parts of iron-ore slag powder, 4-5 parts of polytetrafluoroethylene, 1-2 parts of graphene, 1-2 parts of hexadecyl trimethyl ammonium bromide, 1-2 parts of polyacrylamide, 1-2 parts of titanium dioxide, 2-3 parts of dimethyl disulfydryl stannum isooctyl acetate, 2-3 parts of sodium lignin sulfonate, 2-3 parts of hydroxyl silicone oil and 4-5 parts of an assistant. According to the modified calcium carbonate powder provided by the invention, calcium carbonate is modified by adopting various surfactants such as hexadecyl trimethyl ammonium bromide, polyacrylamide, sodium lignin sulfonate and hydroxyl silicone oil. The performance indexes of the modified calcium carbonate powder such as oil factor, viscosity and activating rate are improved, and the modified calcium carbonate powder is easier to disperse and compatibilize in a macromolecular polymer. When the modified calcium carbonate powder is used to fill a PVC (Polyvinyl Chloride) material, the reinforcing effect of the modified calcium carbonate is more excellent than unmodified calcium carbonate.

The invention relates to leaking stoppage cement slurry for well cementation and a preparation method thereof. The leaking stoppage cement slurry consists of the following components in parts by weight: 100 parts of oil-well cement, 50-150 parts of water, 0.01-8 parts of fibrilia, 1-20 parts of dispersing agent, 1-20 parts of filtrate reducer, 5-50 parts of alkali regulator, 1-10 parts of retarder and 0-1 part of defoaming agent, wherein the dispersing agent is lauryl sodium sulfate or sodium hexametaphosphate; the filtrate reducer is 2-acrylamide-2-methylpropanesulfonic acid or hydroxyethylcellulose; the alkali regulator is silicon powder; the retarder is sodium lignin sulfonate or citric acid; the defoaming agent is dimethyl silicon oil or tributyl phosphate; and the fibrilia is one or the mixture of two or more of jute, flax, hemp, ramie and sisal. The invention effectively solves the problem of leakage loss of cement slurry and inherent brittleness of set cement in the well cementation process on the premise of meeting various engineering performances required by the well cementation and provides the guarantee for subsequent operation of oil well gas.

The invention relates to preparation and an application of paint waste water treatment agents. The paint waste water treatment agents comprise viscosity reducing agent A and flocculants B, wherein the viscosity reducing agent A is aqueous solution, is formed by compounding organic bentonite, 6501 nonionic surface active agents and high-molecular polymers prepared from formaldehyde and three kinds of organic compounds: aniline, urea and starch through reaction, has high electric neutrality and can fast neutralize paint particle charges, so dope loses the viscosity. The flocculants B is aqueous solution, is formed by compounding sodium alginate aqueous solution, sodium lignosulphonate aqueous solution and chitosan modified cation polyacrylamide aqueous solution with the molecular weight being 8 to 12 million, has high coacervation effect and can gather paint particles losing the viscosity. The paint waste water treatment agents have good viscosity reduction and coacervation effects on water-soluble and fat-soluble dope. When the paint flocculants are applied to paint spraying waste water treatment, the agent A and the agent B are sequentially added into paint-containing circulating water, more than 90 percent of paint in the waste water can be cleaned.

The invention relates to an enhanced liquid cement grinding aid capable of improving the grinding efficiency of a cement grinding mill and enhancing the strength of cement. The liquid cement grinding aid comprises the components with the weight percentages as follows: 10 to 20 percent of triethanolmine, 5 to 10 percent of triisopropanolamine, 3 to 5 percent of diethylene glycol, 2 to 5 percent of sodium formate, 2 to 5 percent of sodium acetate, 1 to 3 percent of sodium lignosulfonate, 10 to 20 percent of desugarized molasses, 5 to 10 percent of glycerin, and water.

The invention discloses a super-retarding polycarboxylic acid water reducer and a preparation method and a using method thereof. The super-retarding polycarboxylic acid water reducer is directly synthesized in the presence of ammonium sulfate by using allyl polyethylene glycol (with number-average molecular weight of 600 to 2,400), methyl acrylate, maleic anhydride, sodium lignosulphonate and sucrose fatty acid ester and by neutralizing with sodium hydroxide. The price of the raw materials is low, the product performance is stable, and the market prospect is bright.

The invention relates to a fracturing fluid for the fracturing construction of coal bed gas well. In general, a coal bed gas well cannot be put into operation before the fracturing construction. Owing to the characteristics of small harm, low cost, convenient preparation and the like, the active water is extensively applied to the fracturing construction of coal bed gas well. The typical active water fracturing fluid is generally prepared from clear water, anti-swelling agent (typically potassium chloride) and cleanup additive (typically complex of surfactants, typical cleanup additive for oil field is D-60 and HP-8, etc.) based on certain proportions. The active water fracturing fluid shows, when being used for the fracturing construction, the defects of high frictional resistance and no dispersion effect on coal dusts generated in the process of the fracturing construction. The active water fracturing fluid according to the invention is prepared in a manner of adding the typical active water fracturing fluid with drag-reducing agent (anionic or nonionic polyacrylamide) and coal dust dispersing agent (lignosulfonate, such as sodium lignin sulfonate) based on the mass percents as below: 1%-2% of potassium chloride, 0.02% to 0.06% of drag-reducing agent and 0.01% to 0.03% of dispersing agent. The fracturing fluid according to the invention has the characteristics of simple formula, the effect of reducing frictional resistance of construction tubular columns and uniformly dispersing coal dusts, small harm to coal bed and easy flowback.

The invention relates to an oil field fluid loss additive for drilling liquid and its producing method and the application of the treating agent in the process of producing drilling liquid system. The treating agent utilizes the cation monomer dimethyl diallyl ammonium chloride can make the sodium lignin sulfonate and the sulfonated-methyl brown coal graft induced by FeCl3 so as to produce a new fluid loss agent with the resistance to salt and collapse at high temperature. The composed product integrates the brown coal and lignin. The cation introduction improves the resistance to collapse. The weak crosslinking function of the Fe3+ makes the heat resistance improved further based on the brown coal. Therefore, the product can be widely applied in different complicated conditions such as high temperature deep well, gypsum/slat bed, stratum with a bad water sensitivity, fragility stratum and etc. and has a good prospect.

The invention discloses abamectin microcapsule powder prepared from a lignin-based wall material and a method for preparing the abamectin microcapsule powder by use of the lignin-based wall material. The method comprises the following steps: dissolving a purified amido sodium lignosulfonate wall material and an emulsifying agent in water so as to prepare an aqueous solution to obtain a water phase; dissolving an abamectin tech in an organic solvent to obtain an organic phase; uniformly adding the organic phase into the water phase under a rotating condition, and then shearing; and then regulating the pH value of a dispersion liquid and performing a complex coacervation reaction; cooling, adding a cross-linking agent for a cross linking reaction, performing centrifugal separation, filtering and drying to obtain the microcapsule powder. The preparation process of the abamectin microcapsule powder is simple, the wall material is environmentally friendly and degradable, and abamectin tech photolysis can be prevented; the prepared microcapsule is relatively high in drug-loading rate and entrapment rate and obvious in slow release effect, and regulation and control on release can be realized within a certain pH range.

The invention discloses a lead-acid storage battery lead paste, comprising a positive lead paste and a negative lead paste, wherein the positive lead paste comprises the following components: regenerated lead powder, red lead, polytetrafluoroethylene, ultra-fine tetrabasic lead sulfate, sodium perborate, graphite, polyester staple fiber, glass fiber, antimonous oxide, dilute sulfuric acid and deionized water; and the negative lead paste comprises the following components: regenerated lead powder, red lead, barium sulfate, barium stearate, sodium lignosulfonate, humic acid, semi-carbonized wood chips, polyester staple fiber, modified graphene, dilute sulfuric acid and deionized water. According to the lead-acid storage battery lead paste disclosed by the invention, the problem of poor over-discharge performance and charge acceptance capability of a storage battery can be improved, and the service life of the storage battery can be prolonged.

The invention discloses a straw pulp papermaking black liquor water-coal slurry dispersant and a preparation method thereof. The prescription of the water-coal slurry dispersant is counted by mass portion and includes 20 portions of condensed straw pulp papermaking black liquor of 50 to 60 percent; 25 to 50 portions of aldehydes, 20 to 60 portions of carbonyl compounds and 25 to 50 portions of sulfonating agents. The preparation method thereof is to prepare the water-coal slurry dispersant by carrying out graft sulfonation and polycondensation on the condensed straw pulp papermaking black liquor, the aldehydes, the carbonyl compounds and a sulfonating agent. The materials of the invention have abundant sources and low cost; the production cost is low; the water-coal slurry dispersant prepared by the invention has excellent water solubility and surface activity as well as excellent slurry preparing performance to the water-coal slurry under a lower addition; the dispersing viscosity reduction performance of the water-coal slurry dispersant is far superior to lignin sulfonate; aiming at different coal varieties, the water-coal slurry dispersant achieves or exceeds the efficiency of naphthyl sulfonate formaldehyde condensate; besides, the anti-shearing performance of a slurry body is excellent; the application range to the coal varieties is broad; the water-coal slurry dispersant is novel, effective and environment-friendly.

The invention provides a lead-acid storage battery negative lead plaster capable of inhibiting hydrogen evolution and a preparation method. The technical scheme of the lead-acid storage battery negative lead plaster is as follows: the lead plaster is prepared from the following solid raw materials in parts by weight: 100 parts of lead powder, 1-3 parts of carbon source, 0.15-1.0 part of zinc source, 0.3-2 parts of barium sulfate, 0.1-0.5 part of sodium lignosulfonate and 0.01-0.5 part of fibers. The lead-acid storage battery negative lead plaster provided by the invention is characterized in that a certain quantity of zinc-containing compounds and different types of carbon are added to the negative lead plaster, so that the grain size and the microstructure of the lead negative material are improved, and therefore, the purposes of increasing the capacity of a lead-acid battery, enhancing the ability of the battery to accept charging and improving the charge-discharge cycle stability of the battery are achieved. Tests indicate that the doping of the zinc compound in the negative lead plaster causes the hydrogen evolution potential at the cathode of a lead-acid storage battery to be more negative, so that the hydrogen evolution difficulty is increased, the hydrogen evoluted is reduced, the consumption amount of an electrolyte in the use process is reduced and the service life of the battery can be prolonged; and furthermore, the odds of unsafe accidents such as explosion and the like are reduced to a certain extent.

Disclosed is an oil soluble pesticide nm capsule and preparation method, having weight ration of: pesticide: 0.5-4%; high molecular compound: 8-25%; mixed-surfactant: 8-20%; cosurfactant 3-10%; crosslinking agent 0.5-1.0%; organic solvent 3-10%; water: added to 100%, wherein the high molecular compound is selected from sodium lignosulfonates, chitosan, gum arabic or glutin, one or two is/are selected for agglutination reaction, forming capsule skin of the nm capsule; the capsule core is pesticide bulk drug, selected from diflubenzuron, emamectin benzoate, abamectin, imidacloprid, ivermectin or highly active cypermethrin. The mixed-surfactant adopts nonionic surfactant and anionic surfactant for compound. The pesticide nm controlled release preparation prepared by the invention is easy in storage, high in stability, large in drug-loading rate and high in dispersion.

The invention discloses a preparation method and application of pH-responsive amino sodium lignosulphonate. The preparation method comprises the following steps: dissolving sodium lignosulphonate in water to prepare a sodium lignosulphonate water solution, regulating the pH of the solution to be 10-13, and activating at 50-70 DEG C for 0.5-1.0 hour; adding an amination modifier, dropwise adding an aldehyde reagent, and reacting at 70-90 DEG C for 2-4 hours after the dropwise adding, so as to obtain an amino sodium lignosulphonate water solution; extracting the obtained amino sodium lignosulphonate water solution by virtue of an alcohol reagent, washing residual solids by virtue of petroleum ether after the extraction, and carrying out freeze drying on washed remnants. The amino sodium lignosulphonate prepared by virtue of the preparation method has remarkable pH response characteristic; by regulating the pH of the water solution of the product, the molecular configuration and the aggregation extent of the product can be changed, and a regular nanoparticle structure can be spontaneously formed; the amino sodium lignosulphonate can be used as a wall material to be applied field of pesticide microcapsules and is hopefully applied to the field of lignin-based nanometer materials.

The invention discloses a negative plate of a lead-carbon battery and a preparation method thereof. The negative plate consists of lead powder, active carbon, carbon black, barium sulfate, sodium lignosulfonate, humic acid, short fiber and sulfuric acid. The battery prepared by the negative plate has the advantages that the charging acceptance can be effectively improved, the sulfation phenomenon of the negative electrode under high-rate partial state of charge (HRPSoC) is effectively relieved, the times of 2C charge-discharge rate circulation (3%DOD) under 50% state of charge can reach 18442, and compared with the traditional lead-acid storage battery, the cycle life can be prolonged by more than two times.

The invention provides a method for preparing sodium lignosulfonate. The method comprises the following steps: (A) providing a lignin suspension; (B) regulating the pH value of the suspension to 4.8-8.5; (C) sequentially adding sodium sulfite and formaldehyde to the suspension with pH value of 4.8-8.5, reacting and filtering to obtain filtrate; (D) mixing the filtrate with a sealant and reacting to obtain sodium lignosulfonate. The method provided by the invention has the advantages that the reaction between lignin and sodium sulfite and formaldehyde is controlled by controlling the adding order of sodium sulfite and formaldehyde; the filtrate obtained through filtering after reaction is reacted with the sealant to react with the free phenol hydroxyl, so that obtained sodium lignosulfonate has good dispersion property, excellent performance when used as the dye dispersant and little textile staining while having high heat stability.