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

2073 results about "Hydroxymethyl cellulose" patented technology

Double-coated hollow glass microbead heat-insulated coating and preparation method thereof

The invention discloses double-coated hollow glass microbead heat-insulated coating and a preparation method thereof. The double-coated hollow glass microbead heat-insulated coating is prepared from the following raw materials in percentage by weight: 20 to 30 percent of organic silicon modified styreneacrylic emulsion, 9 to 13 percent of double-coated hollow glass microbead, 8 to 12 percent of titanium dioxide rutile, 5 to 8 percent of talcum powder, 17 to 23 percent of heavy calcium, 1.5 to 2 percent of glycol, 0.13 to 0.2 percent of hydroxymethyl cellulose, 0.6 to 1 percent of dispersing agent, 0.35 to 0.45 percent of defoaming agent, 0.15 to 0.19 percent of wetting agent, 0.08 to 0.13 percent of multifunctional aid, 1.0 to 1.5 percent of film-forming aid and the balance of water. Reflective heat-insulated coating is prepared by performing pretreatment on hollow glass microbeads by a double-coated method, selecting silicone/acrylic emulsion as a base material, using the pretreated hollow glass microbeads, the titanium dioxide rutile, the talcum powder, the heavy calcium and the like as pigment fillers and adding a certain amount of fillers. The coating can improve reflectivity and weather resistance, and has the beneficial effects of environmental friendliness, energy conservation, simple production process, good dispersing effect, low cost, stable performance and long service life.
Owner:SHENYANG JIANZHU UNIVERSITY

Water soluble fertilizer containing high-concentration humic acid and preparation method thereof

The invention provides a water soluble fertilizer containing high-concentration humic acid. The water soluble fertilizer comprises, by weight, 15-25 parts of a water soluble humic acid salt, 18-25 parts of urea, 9-15 parts of dipotassium hydrogen phosphate, 8-13 parts of potassium acetate, 0.5-2 parts of borax, 0.1-10 parts of polyglutamic acid, 1-5 parts of rhamnolipid, 5-10 parts of a hydroxymethyl cellulose aqueous solution and 30-40 parts of water. The water soluble fertilizer has humic acid content greater than or equal to 150g / L. The invention also provides a preparation method of the water soluble fertilizer containing high-concentration humic acid. The preparation method comprises the following steps of 1, carrying out heating stirring of the water soluble humic acid salt and water to obtain a humic acid salt solution, 2, adding dipotassium hydrogen phosphate, potassium acetate, borax, polyglutamic acid, rhamnolipid and urea into the humic acid salt solution, and carrying out heating stirring to obtain a mixed solution, and 3, carrying out emulsification of the hydroxymethyl cellulose aqueous solution and the mixed solution to obtain the water soluble fertilizer containing high-concentration humic acid. The water soluble fertilizer has obvious fertilizer efficiency, is environmentally friendly, stable and uniform and has a wide application range.
Owner:陕西鼎天济农腐殖酸制品有限公司

Controlled release composition

InactiveUS20080254124A1Easy for to follow prescribed regimenConstant of releasePowder deliverySolution deliveryEthyl(hydroxyethyl)celluloseCellulose acetate
A composition for controlled delivery of at least one active substance into an aqueous medium by erosion at a preprogrammed rate of at least one surface of the composition, comprising a matrix comprising the active substance, the matrix being erodible in the aqueous medium in which the composition is to be used, and a coating having at least one opening exposing at least one surface of said matrix, the coating comprising a first cellulose derivative which has thermoplastic properties and which is substantially insoluble in the aqueous medium in which the composition is to be used, and at least one of a second cellulose derivative which is soluble or dispersible in water, a plasticizer, and a filler. The coating is a coating which crumbles and / or erodes upon exposure to the aqueous medium such as a body fluid. The first cellulose derivative may be, e.g., ethylcellulose, cellulose acetate, cellulose propionate or cellulose nitrate, and the second cellulose derivative may be, e.g. methylcellulose, carboxymethylcellulose or salts thereof, cellulose acetate phthalate, microcrystalline cellulose, ethylhydroxyethylcellulose, ethylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxymethylcellulose or hydroxymethylpropylcellulose.
Owner:EGALET LTD

Acidating agent for newborn piglet feed and preparation method thereof

The invention discloses an acidating agent for newborn piglet feed and preparation method thereof, relating to the feed additive field. The acidating agent is composed of the following raw materials by parts by weight: 40-55 parts of L-lactic acid, 20-25 parts of boletic acid, 2-4 parts of citric acid and 21-38 parts of auxiliary material, wherein the auxiliary material comprises the following components: 2-3% of dextrin, 7-8% of carboxymethyl cellulose cellulose sodium, the balance white carbon black; the raw materials added with water, mixing and spray granulation are carried out, so as to produce liquidity uniform granules. Pure organic acid composition is adopted, not only pH value of gastrointestinal tract can be reduced, but also sterilization anticorrosion can be realized, so as to regulate and control flora balance of gastrointestinal tract, thus being beneficial to breeding and growth of beneficial fungus such as lactic acid bacillus, inhibiting quantity of harmful fungus such as colibacillus and the like, improving animal anti-stress effect and improving animal immunity; and the acidating agent can directly participate in internal supersession, release energy, promote absorption of mineral substance, vitamin and nutritive material and improve animal production performance.
Owner:JINAN TIANTIANXIANG

Method for preparation of electrode slurry

The invention relates to a preparation method of electrode pulp, which comprises the step that binding agent, conductive agent and dissolvent are mixed and agitated evenly. The invention is characterized in that the conductive agent is mixed with the binding agent, electrode active material and the dissolvent in the form of conductive agent dispersion, the conductive agent dispersion includes the conductive agent, conducting dispersing medium, dispersant and stabilizer, the dispersant is chosen from one or more of polyacrylamide, polyvinylpyrrolidone, hydroxy ethyl cellulose, polyacrylic ester, dodecyl polyethylene oxide ester, polycaprolactone and alkyl acid and the stabilizer is chosen from on or more of polyvinylidene fluoride, polyfluortetraethylene, polyacrylamide, polyvinylpyrrolidone, methylol cellulose, droxyethylcellulose and polyacrylic ester. The battery which is prepared by utilizing the method provided by the invention has the advantages that the battery capacity is high, the discharging platform is stable, the circulation is good, and the internal resistance change is little; and simultaneously, the invention overcomes the disadvantages that the using quantity of organic solvent is large, the cost is high and the pollution to the environment is large when the pulp is prepared in the prior art.
Owner:BYD CO LTD

Method for preparing heat-sensitive moisture-retaining central line filter stick of cigarette

InactiveCN102068038ARelease stabilityReduce sensory stimulationTobacco smoke filtersMolding machineDiluent
The invention discloses a method for preparing a heat-sensitive moisture-retaining central line filter stick of a cigarette. The method comprises the following steps of: mixing sodium alginate, methylcellulose and hydroxymethyl cellulose, then adding a bonder in an amount which is 1 to 10 percent based ,on the weight of the mixture to obtain an inclusion, mixing 7-10 parts of humectant and 5-10 parts of inclusion uniformly, and standing for 30 minutes to obtain a micro-capsule prebonded body; adding the micro-capsule prebonded body into a spray dryer, adjusting the spray drying pressure to be between 10 and 20MPa, and performing spray drying to obtain micro-capsule powder; and diluting the micro-capsule powder by 5 to 20 times by using diluents, wherein the obtained mixture is used for performing dip-coating on a central line of a filter stick, drying at the temperature of between 80 and 120 DEG C to obtain a moisture-retaining central line, and molding the prepared heat-sensitive moisture-retaining central line by using a filter stick molding machine to form the central line filter stick. By the method, the steady release of the humectant can be realized, and the heat-sensitive moisture-retaining central line filter stick has long storage time, can improve the aroma concentration and smoking quality of cigarettes, and can be industrially produced easily.
Owner:CHINA TOBACCO GUIZHOU IND

Hydrogel fire extinguishing agent and use method thereof

The invention discloses a hydrogel fire extinguishing agent. The hydrogel fire extinguishing agent is white powder and obtained in the manner that 5-10 parts of acrylic polymers, 10-15 parts of carboxy methyl cellulose, 10-15 parts of corn starch, 5-10 parts of dispersing agent, 10-20 parts of fire retardant, 1-3 parts of hydrocarbon surfactant and the like undergo modified treatment. The obtained fire extinguishing agent has the conventional water cooling fire extinguishment function, and the fire extinguishing agent and water can form a hydrogel film resistant to high temperature, good in fire resistance and high in coverage performance and adhesion performance, and the hydrogel film can isolate air, extinguish fire by smothering and effectively prevent the fire from burning again; if the fire extinguishing agent is sprayed to an unburned area close to the fire, an isolation strip can form, so that the spreading tendency of the fire can be effectively controlled, and the fire extinguishing efficiency can be significantly improved. Besides, fire extinguishment residues are free of pollution, easy to degrade, safe, environmentally friendly and free of doing harm to human beings, plants and the like. In this way, the hydrogel fire extinguishing agent is wide in application range, can be applied to civil facilities, public facilities, plant-station disaster relief, forest fire and the like, the dosage of the fire extinguishing agent is small, and therefore the hydrogel fire extinguishing agent has significant advantages.
Owner:RUNTAI RESCUE EQUIP TECH HEBEI CO LTD

Controlled release composition

InactiveUS20050019405A1Easy for to follow prescribed regimenConstant of releasePharmaceutical non-active ingredientsCoatingsEthyl(hydroxyethyl)celluloseCellulose acetate
A composition for controlled delivery of at least one active substance into an aqueous medium by erosion at a preprogrammed rate of at least one surface of the composition, comprising a matrix comprising the active substance, the matrix being erodible in the aqueous medium in which the composition is to be used, and a coating having at least one opening exposing at least one surface of said matrix, the coating comprising a first cellulose derivative which has thermoplastic properties and which is substantially insoluble in the aqueous medium in which the composition is to be used, and at least one of a second cellulose derivative which is soluble or dispersible in water, a plasticizer, and a filler. The coating is a coating which crumbles and/or erodes upon exposure to the aqueous medium such as a body fluid. The first cellulose derivative may be, e.g., ethylcellulose, cellulose acetate, cellulose propionate or cellulose nitrate, and the second cellulose derivative may be, e.g., methylcellulose, carboxymethylcellulose or salts thereof, cellulose acetate phthalate, microcrystalline cellulose, ethylhydroxyethylcellulose, ethylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxymethylcellulose or hydroxymethylpropylcellulose.
Owner:EGALET LTD

Solid medical ultrasound coupling patch and preparing method thereof

The invention discloses a solid medical ultrasound coupling patch and a preparing method thereof. The solid medical ultrasound coupling patch is prepared from a sodium alginate polymer, carrageenan, xanthan gum, hydroxymethyl cellulose, propylene glycol, glycerol, a preservative and deionized water. The preparing method comprises the steps that the sodium alginate polymer, glycerol, pure water andthe like are taken according to the mass ratio, mixed, heated and stirred evenly, and the mixture is discharged after heat-preservation defoaming is carried out, and then forms products of various specifications and shapes through filling. The solid medical ultrasound coupling patch is convenient to use and has excellent sound conduction and isolation effects; when medical personnel are in contact with infectious patients, the functions of preventing the risk of cross infection in a hospital and protecting the medical personnel are achieved after separation. The solid medical ultrasound coupling patch serves as a coupling medium, is specially applied to black and white ultrasonic equipment, color Doppler ultrasound equipment and the fields of ultrasound focusing and ultrasound treatment,and is suitable for the superficial surface, soft tissue, muscle bones, milk glands and thyroid glands of the human body and other parts where a liquid gel medium is difficult to use in ultrasound application.
Owner:SHENZHEN MINHAO TECH CO LTD

Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material

The invention provides a method for preparing a water-coal-slurry additive taking enzymatic hydrolysis lignin as a raw material. In the method, the chemical activity of the enzymatic hydrolysis lignin is utilized to directly perform polycondensation with sodium hydrogen sulfite, sodium metabisulfite, acetone and methanal to a prepare enzymatic hydrolysis lignin-sulphonated acetone-methanal condensation polymer (LSAF); the enzymatic hydrolysis lignin-sulphonated acetone-methanal condensation polymer (LSAF) is compatible with other types of surfactants, and is compounded with the surfactants, such as sodium dodecyl benzene sulfonate, PVA, carboxymethyl cellulose sodium and the like to prepare the water coat slurry which has higher stability and lower viscosity; and the liquidity of the water coat slurry is improved. The enzymatic hydrolysis lignin replaces the partial petrochemical raw materials to prepare modified high molecular materials, which not only lowers the cost of high molecular materials, but also can save the consumption of the petrochemical materials, and can generate significant social benefit; and the processing technique for preparing the water-coal-slurry additive taking the enzymatic hydrolysis lignin as a raw material is simple, is easy to implement and has good effect.
Owner:FUZHOU UNIV

Self-repairing concrete and preparation method thereof

ActiveCN110240457AImprove crack resistanceReduce initial widthFiberDodecylsulfonic acid
The invention discloses self-repairing concrete and a preparation method thereof. The self-repairing concrete comprises the following raw materials, in parts by weight: 200-300 parts of cement, 350-450 parts of sand, 800-1000 parts of gravel, 60-100 parts of water, 60-80 parts of sodium alginate, 35-55 parts of calcium chloride, 10-20 parts of sodium dodecyl sulfonate, 35-55 parts of hydroxymethyl cellulose, 40-60 parts of anti-cracking fibers, 10-20 parts of a silane coupling agent, 5-10 parts of a water reducing agent, 15-30 parts of calcium oxide and 20-30 parts of repair capsules; and the preparation method comprises the following steps: mixing the cement, the sand, the gravel, the sodium alginate and the hydroxymethyl cellulose under stirring, adding the sodium dodecyl sulfonate, the anti-cracking fibers and the silane coupling agent, performing mixing under stirring for 10-20 min, adding the water reducing agent and the water, performing stirring for 40-50 min, adding the calcium chloride and the calcium oxide, performing stirring for 20-30 min, finally adding the repair capsules, and performing stirring to obtain the self-repairing concrete. The self-repairing concrete provided by the invention has the advantages that the raw materials for preparing the concrete are easy to obtain, the construction is convenient, cracks of the concrete can be subjected to self repairing and the strength is higher after the cracks are repaired.
Owner:北京建工一建工程建设有限公司

Micro-suspension self-selection water shutoff and profile control agent and application method thereof

ActiveCN102516960AEliminate cloggingThe space occupied by the blockage is formed to eliminate the mechanical blockage of the water flowDrilling compositionSealing/packingHigh water contentSodium hydroxide
A micro-suspension self-selection water shutoff and profile control agent. A layer self-selection water shutoff and profile control agent applied to oil deposit with middle and high water content can carry out self-selection water shutoff and profile control in a layer of complex oil deposit with middle and high water content, a lateral well and a secondary big pore channel. The water shutoff and profile control agent comprises 5-50% of asphalt, 1-5% of olefin, 0.5-1.0% of octadearyl dimethyl ammonium chloride, 0.1-0.15% of carboxymethyl cellulose sodium, 5-15% of stable control agent sodium hydroxide aqueous solution and the balance of water. The preparation method comprises step of processing the raw materials into stable micro fluid suspension with a particle size of 1 mum-1mm through machinery crushing and grinding by a colloid mill. The invention has the following beneficial effects: the water shutoff and profile control agent can be applied to layer self-selection water shutoff and profile control of oil deposit with high water content; a main agent asphalt can be dissolved in light oil completely but not in water; plastic colloid can be precipitated; and blocking of different strength can be realized through reasonable selection and assembly of softening points of the main agent.
Owner:PETROCHINA CO LTD

Hot-blast furnace pipe packing material and preparation method therefor

The invention discloses a hot-blast furnace pipe packing material and a preparation method therefor. The packing material is prepared from the ingredients in parts by weight: 100 parts of dry mattersand 10-25 parts of silica sol, wherein the 100 parts of dry matters comprise high bauxite, flint clay or mullite particles, silicon carbide particles, high bauxite or corundum powder, metal-nonmetal composite powder, activated alumina micropowder, calcined alumina micropowder, clay micropowder, carboxymethyl cellulose or hydroxymethyl cellulose and a curing agent. The packing material disclosed bythe invention is pollution-free to environments, is good in fluidity in construction time, is not prone to settlement, can be thoroughly packed into small slits during pressed-in repair, can be constructed at high temperatures and can also be cured at normal temperatures; the packing material can be tightly bonded to a material of a pressed-in area; the packing material has good strength propertyat all temperatures; the packing material has low linear shrinkage in service temperature intervals and has good thermal shock stability; and industrial wastes of other industries are utilized, so that the utilization ratio of resources is increased.
Owner:CHINA JINGYE ENG +2
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