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137 results about "Sodium bisulphite" patented technology
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Breviscapine infusion preparation and its preparing method
InactiveCN1425385AInfusion stabilityOvercome the disadvantages of poor clarityOrganic active ingredientsCardiovascular disorderMedicineArginine
The Breviscapine infusion preparation is compounded with Breviscapine as main component, glucose or sodium chloride, propylene glycol, L-arginine, sodium bisulphate, EDTA-2Na and water for injection through certain technological process. The preparation is suitable for great dosage application clinically to avoid cross infection caused by intermediate links. In addition, the present invention is clear and stable.
Owner:上海博泰医药科技有限公司
Preparation method of star polymer
ActiveCN102093505AHigh molecular weightLower the polymerization initiation temperaturePolymer scienceMeth-
The invention discloses a preparation method of a star polymer, belonging to the technical field of petroleum extraction. The method adopts a redox initiation system, and carries out water solution radical copolymerization on three water-soluble monomers, including tert-butyl acrylate, 2-acrylamido-2-methylpropane sulfonic acid and acrylamide. The redox initiation system comprises trihydroxymethyl phenol, persulfate, hydrogen peroxide, urea, sodium formaldehyde bisulfite, azoisobutyronitrile, chain transfer agent and surfactant. The molecular weight of the star polymer prepared by the method is 8-15 million; the star polymer is water-soluble; the content of the residual monomers in the product is less than or equal to 0.1 wt%; and the star polymer and a crosslinking system, which is composed of water-soluble phenolic resin and polyethylene imine, can form a movable gel system for carrying out deep profile control on a high-temperature high-salt oil reservoir of which the salinity is 117000 mg / L and the temperature is 140 DEG C.
Owner:PETROCHINA CO LTD
Textile water-based pigment printing binding agent and preparation method
ActiveCN102605648AMeet printing requirementsHigh fastnessEster polymer adhesivesDyeing processTextile printerPolymer science
The invention relates to a textile water-based pigment printing binding agent and a preparation method. The textile water-based pigment printing binding agent is prepared in a way that acrylonitrile, ethyl acrylate, butyl acrylate, crylic acid, hydroxyethyl methacrylate, acrylamide, sodium dodecyl sulfate, alcohol dodecyl polyoxyethylene (10) ether, deionized water, ammonium persulfate and sodiumhydrogen sulfite are subjected to emulsion polymerization and then are mixed with pyrolysis closed polyurethane crosslinking agent according to proportion. The product is cured in low temperature condition, has remarkable advantages in the aspects of dry rubbing fastness, wet rubbing fastness, soaping fastness and the like, is simple and easily-controllable in production operation, and is energy-saving and environment-friendly.
Owner:LIAONING FIXED STAR FINE CHEM
Stabilized nalmefene hydrochloride injection and its preparation
ActiveCN1895251AReasonable compositionSimple processOrganic active ingredientsNervous disorderGlucose polymersD-Glucose
A high-stability nalmefene hydrochloride injection is prepared from nalmefene hydrochloride (0.005-0.2 W / v %) and the medicinal carrier chosen from sodium chloride, glucose, beta-cyclodextrin, dextran, pectose, sorbitol, etc. Its preparing process is also disclosed.
Owner:西藏易明西雅医药科技股份有限公司
Composite sulfited vegetable oil leather fat-liquoring agent and method for preparing same
InactiveCN101285107AGood low temperature storageGood fatliquoring performanceLeather impregnationMaleic anhydrideSOYBEAN SEED OIL
The invention relates to a complex sulfited vegetable oil leather fat liquor and a method for preparing the same. The complex fat liquor contains sulfited vegetable oil, granulesten, chloridized soybean oil methyl ester, alkyl sulfonyl amine, liquid paraffin and auxiliary emulsifying agent. Firstly, vegetable oil is reacted with monoethanol amine to obtain amidated vegetable oil, the amidated vegetable oil is reacted with maleic anhydride to obtain succinic acid monoester, then the succinic acid monoester undergoes an esterification reaction with low carbon alcohol to obtain succinic acid diester, and the succinic acid diester is reacted with sodium bisulfite to obtain the sulfited vegetable oil. Then the granulesten, the chloridized soybean oil methyl ester, the alkyl sulfonyl amine, the liquid paraffin and the auxiliary emulsifying agent are imported into the sulfited vegetable oil, and the complex sulfited vegetable oil leather fat liquor can be obtained by emulsifying and adjusting contents of effective substances. The product has strong electrolyte-resistant ability, leather using the product to make a fat liqoring is soft and moist and has good elasticity, and the fat-liquoring effect can be maintained for a long time.
Owner:WENZHOU UNIVERSITY
Acrylate copolymer emulsion, and aqueous industrial anticorrosive paint adopting acrylate copolymer emulsion as film forming substance
ActiveCN105859936AReduce the temperatureGuaranteed compactnessAnti-corrosive paintsCross-linkSodium bisulfate
The invention discloses an acrylate copolymer emulsion, and belongs to the technical field of aqueous coatings. The acrylate copolymer emulsion comprises, by weight, 450-550 parts of deionized water, 1-2 parts of an anionic surfactant, 5-8 parts of a reactive emulsifier, 3-15 parts of hydroxypropyl acrylate, 50-160 parts of methyl methacrylate, 20-75 parts of butyl acrylate, 200-410 parts of styrene, 5-10 parts of methacrylic acid, 3-10 parts of an adhesion function monomer, 2-9 parts of a cross-linking monomer, 3-10 parts of a cross-linking agent, 0.1-3 parts of an antifoaming agent, 0.8-2 parts of an initiator, 3-5 parts of ammonia water, 0.8-2 parts of an antiseptic, 0.1-1 part of tert-butyl hydroperoxide and 0.1-0.8 parts of sodium bisulfate. The invention also discloses an aqueous industrial anticorrosive coating adopting the acrylate copolymer emulsion as a film forming substance. The coating has the advantages of high adhesion to a substrate, high water resistance and high salt spray resistance.
Owner:HENGSHUI XINGUANG CHEM
Gum rosin base emulsifier and preparation and use thereof
ActiveCN101298029AEasy to useGood compatibilityTransportation and packagingMixingPolyethylene glycolOctanol
The invention discloses a rosin-based emulsifier and a preparation method and application thereof. The rosin-based emulsifier having the following structural formula is prepared by the steps of reaction between rosin and octanol, addition reaction with acrylic acid, condensation reaction with polyethylene glycol, esterification with maleic anhydride and conjugated reaction with sodium bisulfite. The rosin-based emulsifier prepared by the invention has little effect on the performance of a rosin ester emulsion, can emulsify rosin ester directly without remixing with other surfactants and the rosin ester emulsion prepared has the advantages of small particle size, stable storage and good performance.
Owner:江西金安林产实业有限公司
Electrostatic flocking adhesive for high fastness carpet and preparation method thereof
ActiveCN105294925ARaise the ratioImprove dry and wet rubbing fastnessEster polymer adhesivesPhosphoric Acid EstersPolymer science
The invention provides an electrostatic flocking adhesive for a high fastness carpet and a preparation method thereof. The raw materials comprise, by weight, 3.5-4.3 parts of a reactive anionic emulsifier, 25-27 parts of a reactive nonionic emulsifier, 3.9-4.1 parts of methacrylic acid polyether phosphate ester, 0.9-1.2 parts of itaconic acid, 4.9-5.1 parts of N-hydroxymethyl acrylamide, 0.9-1.2 parts of acrylamide, 1.5-2 parts of methacrylamide ethyl ethylene urea, 3.9-4.1 parts of methacrylic acid, 2.4-2.6 parts of hydroxyethyl methylacrylate, 3.9-4.1 parts of glycidyl methacrylate, 180-185 parts of n-butyl acrylate, 50-53 parts of acrylonitrile, 47-50 parts of methyl methacrylate, 1-1.1 parts of ammonium persulfate, 0.5-0.55 part of sodium bisulfite, and 258-272 parts of deionized water; a polymer emulsion formed by the seeded emulsion polymerization is supplemented with water solution containing 24-25 parts of ammonium polyphosphate and mixed to prepare the electrostatic flocking adhesive for high fastness carpet, wherein the adhesive has good wear resistance, moisture resistance and flame resistance.
Owner:LIAONING FIXED STAR FINE CHEM
Amino acid injection and preparation method thereof
ActiveCN101401785APain reliefReduce clinical adverse reactionsOrganic active ingredientsMetabolism disorderAntioxidantThreonine
The invention discloses an amino acid injection, commonly known as propranolol, which relates to a pharmaceutical preparation containing 18 kinds of amino acids. The amino acid injection contains the following components per 1,000 milliliters: isoleucine, leucine, methionine, phenylalanine, threonine, tryptophan, valine, glycine, alanine, glutamic acid, aspartic acid, proline, serine, cystine, lysine hydrochloride or lysine acetate, arginine hydrochloride or arginine, histidine hydrochloride or histidine, tyrosine or acetyl tyrosine, and sodium bisulfite or sodium meta-bisulphite. The osmotic pressure ratio of the amino acid injection is lower than 1.8, which effectively reduces the pain for a patient in infusion; the added quantity of antioxidant is small, which can reduce the clinical adverse reactions; and an infusion bottle body is large, which is convenient to mix liquid in clinical application.
Owner:GUANGDONG LITAI PHARM CO LTD
Method for preparing composite tan fatting agent from discarded phospholipid
The invention discloses a process for preparing retannage fatting agent by waste phosphatides, belonging to the leather chemical industry technology field. The process comprises firstly amidating waste phosphatides by utilizing diethanolamine, then esterifying through maleic acid, modifying esterification fat by using chloride salt, and finally sulfating fat by utilizing sodium acid sulfite, thereby preparing a novel fatting agent which has the functions of retannage and stuffing. The process can prepared leather fatting agent which is suitable to different models and requests and patterns through regulating proportions of each raw material component and has the characteristics of simple operation, simple device and low cost and the like. The retannage fatting agent of the invention has strong cohesion with leather fiber and excellent absorption property, which can make the leather which is filled fat much softer, compact, well developed, and the effect can be remained in long term.
Owner:NINGBO UNIVERSITY OF TECHNOLOGY
Method for preparing modified betaine type amphoteric surfactant used for tertiary oil recovery
InactiveCN101891655AEase of industrial productionHigh yieldTransportation and packagingSulfonic acids salts preparationBetaineSodium bisulphite
The invention provides a method for preparing a modified betaine type amphoteric surfactant used for tertiary oil recovery. In the method, sodium bisulphite, epichlorohydrin and long-chain alkyl tertiary amine serving as raw materials are subjected to ring-opening reaction and quaterisation to form the amphoteric surfactant used for displacement of reservoir oil. Because the amphoteric type oil displacement agent for tertiary oil recovery is a modified sulfonate betaine type surfactant, the modified betaine type amphoteric surfactant for tertiary oil recovery of the invention has higher performance compared with the conventional surfactants. The surfactant of the invention has the advantages of typical and mature method, high interfacial activity, high efficiency and environmental protection and high universality.
Owner:程玉桥
Preparation method of cation-type waterborne polyurethane wool anti-felting emulsion
InactiveCN104878604AGood storage stabilitySolid content adjustableAnimal fibresBursting strengthPolymer science
The invention relates to a preparation method of cation-type waterborne polyurethane wool anti-felting emulsion, and belongs to the field of wool fabric finishing auxiliaries. According to the preparation method of the cation-type waterborne polyurethane wool anti-felting emulsion, polyisocyanate is used as a hard segment, polyether polyol is used as a soft segment, an amine compound is used as a cation chain extender and sodium hydrogen sulfite or methyl ethyl ketoxime is used as an end-capping reagent; the adopted technical route is pre-polymerization reaction-hydrophilic chain extending reaction-end capping reaction-neutralization reaction-self-emulsifying reaction. The anti-felting emulsion synthesized by a self-emulsifying method has the characteristics of being excellent in storage stability, adjustable in solid content and convenient to use, the size change of wool knitting fabrics caused by felting during washing is remarkably reduced, the bursting strength, dyeing depth and dyeing fastness of the wool knitting fabrics are improved, and good application prospect is provided.
Owner:XINJIANG UNIVERSITY +1
Method for synthesizing chitosan cross-linked polymaleic anhydride super absorbent resin
The invention discloses a method for synthesizing chitosan cross-linked polymaleic anhydride super absorbent resin. The method is as follows: biodegradable N-maleoyl chitosan is used as a cross-linking agent, maleic anhydride (MA) and acrylic acid (AA) are used as raw materials, and ammonium persulfate and sodium bisulfite are used as initiating agents; an aqueous solution free radical polymerization reaction is performed to synthesize the biodegradable super absorbent resin; an orthogonal experiment method is used to optimize the synthesis conditions to obtain optimum synthesis conditions. The chitosan cross-linked polymaleic anhydride super absorbent resin prepared using the method provided by the invention is good in water absorption, swelling dynamic performance, water retention capability under natural conditions, repeated water absorption, pH sensitivity and biodegradability.
Owner:QINGDAO WINCHANCE TECH
Antibacterial high water-absorbent resin and method for preparation thereof
The invention relates to a method for producing a bacteria repellency high hydroscopicity resin, which belongs to a kind of functional polymer materials. The resin is produced by long chain quaternary ammonium salt cationic monomers with the structure of allyl group, acrylic anionic monomers neutralized partly by natrium hydroxydatum and acrylamide non-ionic monomers using the process of redox initiation system aqueous solution polymerization method. The oxidation agent is sodium peroxydisulfate or ammonium peroxodisulfate, reducing agent is sodium sulphite or sodium bisulphate, cross linking agent is N, N'-Methylenebisacrylamide and quaternary ammonium salt assisting solvent is aliphatic alcohol polyoxyethylene ether. The said high hydroscopicity resin has a good water-absorbing and water-holding capacity, high gel strength and chemical stability, and a particularly good bacteria repellency.
Owner:ZHONGKAI UNIV OF AGRI & ENG
Production method of leather in which hexavalent chromium content reaches the standard
InactiveCN1807655AAvoid it happening againReduce generationTanning treatmentGallic acid esterAcrylic resin
The invention discloses a leather mark-reaching producing method of hexavalent chromium, which comprises the following steps: placing the basket wet leather in barrate to wash; adding in water, degreasant, aminic acid liquor; discharging liquor; putting in water, modified glutaral, chromium powder, sodium thiosulphate; discharging liquor; adding in water, sodium acid sulfite, sodium thiosulphate, neutralization multiple tanning agent PAK-N apocenosis; discharging liquor; adding in water, synthetic tanning agent, acrylic resin tanning agent ART-1, bayberry extract, dye, sulfating modified adeps lanae fatting agent, synthetic fatting agent SES201, SCF synthetic fatting agent, DF recombination fatting agent, gallic acid, eldopaque and formaldehyde solution; discharging liquor; filling water; discharging liquor in the end. The invention prevents every nucleus of hexavalent chromium produced.
Owner:SHAANXI UNIV OF SCI & TECH
Pigment printing imitated reactive printing adhesive and preparation method thereof
ActiveCN102619103AGood flexibilityImprove adhesion fastnessEster polymer adhesivesDyeing processIsooctyl acrylateTextile printer
The invention relates to pigment printing imitated reactive printing adhesive and a preparation method thereof. The pigment printing imitated reactive printing adhesive is polymer emulsion prepared from fatty alcohol-polyoxyethylene ether (peregal O-25), sodium dodecyl benzene sulfonate, butyl acrylate, dimethyl aminopropyl methacrylamide, glycidyl methacrylate, iso-octyl acrylate, methyl methacrylate, acrylic acid, ammonium persulphate, sodium hydrogensulfite and deionized water through polymerization by using seeded emulsion. The pigment printing imitated reactive printing adhesive product has obvious advantages in indexes such as softness, rub fastness and fastness to washing, and quality of the pigment printing imitated reactive printing product can be obviously improved.
Owner:LIAONING FIXED STAR FINE CHEM
Supplementing culture medium for CHO cell culture and preparing method and application thereof
ActiveCN110343666APromote growthGuaranteed survival rateGenetically modified cellsCulture processThiamine hclTryptophan
The invention relates to a supplementing culture medium for CHO cell culture and a CHO cell culture method. The supplementing culture medium comprises amino acids, vitamins, sodium hydroxide and waterfor injection. According to the total mass of the supplementing culture medium, the supplementing culture medium comprises, by mass, 4.8-19.75% of amino acids, 0.00925-0.13% of vitamins, 1.25-5.5% ofsodium hydroxide and the balance water for injection, wherein the amino acids include L-aspartic acid, L-tyrosine, L-threonine, L-tryptophan and L-glutamic acid, and the vitamins include riboflavin,folic acid, vitamin B12, biotin, menadione sodium bisulfite, thiamine hydrochloride and L-ascorbic acid. By means of the supplementing culture medium and the cell culture method, CHO cell growth can be optimized, and the capacity of cells of expressing target protein can be improved.
Owner:TONGHUA DONGBAO PHARMA
Resistance reduction agent for oil well fracturing and preparation method of resistance reduction agent
InactiveCN105238383ARaw materials are easy to getSimple processDrilling compositionSolubilityHydrophilic monomer
The invention provides a resistance reduction agent for oil well fracturing. The resistance reduction agent for oil well fracturing comprises components A and components B., and the ratio of the components A to the components B is 20:80. The components A comprise 25-37.5 parts of acrylamide, 5-50 parts of hydrophilic monomers, 2.5-10 parts of sodium hydroxide, 1.25 parts of persulfate and 150.25-215.25 parts of water. The components B comprise 450-880 parts of hydrophobic monomers, 100-400 parts of spans, 10-100 parts of alkylphenol ethoxylates and 10-50 parts of alcohol amine salt type anionic fluorocarbon surfactants. Raw materials of the resistance reduction agent are easy to obtain, the preparation technology is simple, water solubility is good, friction resistance is reduced by more than 60%, the interface tension is below 10-2 mN / m after gel breaking, when the resistance reduction agent is used, fast flowback can be achieved while no discharge adding agent needs to be added, and wide application prospects are achieved.
Owner:西安长庆化工集团有限公司
Matte involucra coating adhesive for textile and preparation method thereof
ActiveCN102493195AImprove stabilityGuaranteed emulsificationFibre treatmentIsooctyl acrylatePolymer science
The invention discloses a matte involucra coating adhesive for textile and a preparation method thereof. The matte involucra coating adhesive for textile is prepared from the following components in parts by weight: 2-2.5 parts of fatty alcohol-polyoxyethylene ether, 1.5-2 parts of sodium dodecyl sulfate, 100-105 parts of ethyl acrylate, 25-30 parts of iso-octyl methacrylate, 1.5-2 parts of 2-hydroxyethyl methacrylate, 3.5-4 parts of N-hydroxymethyl acrylamide, 1.5-2 parts of triethylene glycol dimethacrylate, 30-34 parts of styrene, 4-4.5 parts of acrylic acid, 0.4-0.5 part of ammonium persulfate, 0.4-0.5 part of sodium hydrosulfite, 270-340 parts of deionized water and a proper amount of ammonia water with weight percentage concentration of 20-22% by the steps of synthesizing into emulsion by pre-emulsification and initiated polymerization, and then adding 7-12 parts of thickener, 0.2-1.0 part of wetting dispersant and 10-50 parts of delustering agent. The product has mild gloss, soft handfeel, strong involucra feel and excellent firmness.
Owner:LIAONING FIXED STAR FINE CHEM
Secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier and preparation method thereof
InactiveCN107383391AImprove hydrophilicityEnhanced charge strengthOrganic compound preparationSulfonic acids salts preparationSolventHydroxymethyl
The invention discloses a secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier and a preparation method thereof, wherein the secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier is prepared from the following raw materials N-hydrogenated tallow-1,3-propylene diamine, an alcohol solvent, N-hydroxymethyl acrylamide, epichlorohydrin and sodium bisulfite according to a molar ratio of 1:(5.00-11.00):(3.00-3.10):(2.00-2.30):(2.10-2.50), and the alcohol solvent is ethanol, methanol or isopropanol. According to the present invention, the preparation method has advantages of easily available raw material, low production cost, simple process and no requirement of high temperature reaction; and the obtained secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier can emulsify a variety of different types of asphalts, and can be used for preparing cationic emulsified asphalts, and the emulsified asphalt prepared from the secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier has advantages of fine and uniform property and good storage stability.
Owner:SHANDONG UNIV
Compositions for controlling the psyllids trioza erytreae and diaphorina citri, vectors of bacteria of the genus candidatus liberibacter, which cause the most serious known disease of citrus, namely huanglongbing (HLB)
The present invention relates to the use of compositions that, when applied to citrus, are capable of controlling the psyllids Trioza erytreae and Diaphorina citri, vectors of bacteria of the genus Candidatus liberibacter, which cause the disease known as Huanglongbing (HLB), deemed to be the most destructive disease currently to affect citrus crops worldwide. These compositions may contain, without distinction, or jointly, as active components, vitamin K3, soluble derivatives thereof (preferably menadione sodium bisulphite [MSB]) or sparingly soluble derivatives thereof (preferably menadione nicotinamide bisulphite [MNB]), with respective concentrations of between 0.0001 and 200 ppm, 0.001 and 10 000 ppm, preferably vitamin K3 between 0.001 and 100 ppm, MSB between 0.01 and 5000 ppm, and MNB between 0.01 and 5000 ppm. Said compositions are applied preferably by spraying to the aerial part of the plant or via the irrigation system, and may be mixed with a variety of additives, such as organic and inorganic fertilizers, insecticides, nematocides, fungicides, bactericides, acaricides or herbicides.
Owner:CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)
Tannic acid preparation for treating burn, bedsore and diaper dermatitis and preparation method thereof
InactiveCN103040849AReduce exudationInhibit growthOrganic active ingredientsDermatological disorderMonoglycerideGlycerol
The invention relates to a tannic acid preparation and a preparation method, and the tannic acid preparation is characterized by comprising, by weight, 2-30% of tannic acid, 40-75% of pharmaceutical adjuvants, and 20-50% of water. The pharmaceutical adjuvants used in the preparation comprise glycerin, monoglyceride stearate, beeswax, Vaseline, paraffin, tween, span, sodium bisulfate, ethylparaben, etc. The preparation method comprises the following steps: dissolving tannic acid by a little water or ethanol, heating to 55-85 DEG C to prepare an oil phase and a water phase, finally adding the water phase into the oil phase under uniform stirring, and performing condensation and split charging to obtain the tannic acid preparation. The preparation comprises paste agents (ointment, plaster), cream, emulsion, oil agents, water aqua, and the like, and the tannic acid content can be determined by a spectrophotometric method. The prepared tannic acid preparation conforms with medicine standards, and is suitable for the treatment of burn, bedsore and diaper dermatitis (neonatal red buttock) and the like.
Owner:XINXIANG MEDICAL UNIV
Method for Terminating or Reducing Water Flow in a Subterranean Formation
InactiveUS20090260813A1Optimize post treatment productionMinimizing and blocking waterflowFluid removalDrilling compositionWater productionPhenol
This invention relates to a method of reducing the deleterious effects of water production in a subterranean formation by placing an aqueous phase polymer and / or resin, which at a designated set up time, solidifies and blocks water conduits. This invention pertains specifically to a method of conditioning well bores and placing the polymer and displacing the polymer and / or resin to establish post treatment gas and oil permeability. Novel polymers and / or resins for use as a water barrier are disclosed, typified by phenoformaldehyde containing 1-2 weight % of at least one of sodium bisulphite, sodium metabisulphite or mixtures thereof. The method includes selecting a well having sizable hydrocarbon reserves with a production history of decrease of oil or gas production with concurrent increase of water production.
Owner:TERVITA
Bleaching method for bleaching deinked waste pulp
ActiveCN101560740AAvoid pollutionImprove the shortcomings of the yellowish color of the bleaching systemPaper recyclingPulp bleachingSodium borohydrideSodium bisulphite
The invention discloses a bleaching method for bleaching deinked waste pulp. The bleaching method has the advantage of avoiding the environment pollution caused by the conventional bleaching using sodium hydrosulfite and thiourea dioxide. The method is an environment friendly reducibility bleaching method which has great improvement on the whiteness of the waste pulp and low cost. The method can overcome the defect of a yellow color system lying in the conventional bleaching through the sodium hydrosulfite. In addition, sulphate used in the method can selectively be sodium bisulphite or sodium pyrosulfite so as to further improve the whiteness after the waste pulp is bleached and reduce the dosage of sodium borohydride. A chelating agent is at least one of sodium silicate, disodium edta or tetrasodium salt, and diethylene triamine pentacetic acid or sodium tripolyphosphate. Additives and the dosage of the additives can be adjusted according to the actual metallic ion content in the waste pulp so as to improve the bleaching efficiency and reduce the cost of the bleaching medicine for unit whiteness improvement.
Owner:NINGBO ASIA PULP & PAPER +1
Heatproof salt-resistant oil well cement fluid loss agent, preparation method and application thereof
InactiveCN106467724ASuitable for a wide temperature rangeAdaptableDrilling compositionMeth-Sodium bisulfate
The invention relates to a heatproof salt-resistant oil well cement fluid loss agent. The salt-resistant oil well cement fluid loss agent comprises the following components in parts by weight: 100 parts of water, 8-12 parts of 2-acrylamide-2-methylpropanesulfonic acid (AMPS), 4-6 parts of acrylamide (AM), 4-6 parts of N,N-dimethylacrylamide (DMAA), 1-3 parts of vinyl sulfonic acid (VSA), 2-4 parts of vinyl imidazole (VM), 1-3 parts of methyl allyl polyethenoxy ether (HPEG-2400), 1-3 parts of sodium hydroxide (NaOH), 0.1-0.3 parts of ammonium persulfate, and 0.1-0.3 parts of sodium bisulfate. The invention also relates to a preparation method of the additive and an application of the additive.
Owner:CHINA PETROLEUM & CHEM CORP +1
Whitening and water replenishing complex
InactiveCN102871863BInhibition of secretionAchieve whitening effectCosmetic preparationsToilet preparationsTripropylene glycolSkin elasticity
Owner:CHENGDU DAME GREEN COMMODITY
Preparation method of multi-copolymerized high salt tolerant acrylic resin
The invention discloses a preparation method of a multi-copolymerized high salt tolerant acrylic resin. Specifically, 99.98% high purity acrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, potassium carbonate, starch, and acrylamide are adopted as raw materials, ammonium peroxydisulfate and sodium bisulfate are taken as redox initiators, and N, N-methylene-bisacrylamide is employed as a crosslinking agent to synthesize the multi-copolymerized high salt tolerant acrylic resin. By adding multielement components, an advanced level of the product is achieved, and fast absorption of multi-salt components is realized. The structural strength of the product is reinforced. Manual labor is substantially reduced, automatic operation of the product is realized, and the product stability is ensured. The anti-degradation property of the product is prolonged, thus being more conducive to the health and environmental protection of consumers during use of the product.
Owner:弭希海
Asymmetric succinic acid ester type Gemini surfactant and preparation method thereof
InactiveCN104998582AEasy to degradeSave raw materialsTransportation and packagingSulfonic acids salts preparationActive agentSuccinic acid
The invention relates to an asymmetric succinic acid ester type Gemini surfactant and a preparation method thereof. The Gemini surfactant comprises two hydrophilic groups and two hydrophobic chains. Compared with a traditional single-head (hydrophilic group) and single-tail (hydrophobic group) surfactant, the performance is more excellent, and the surfactant is a novel efficient surfactant. Fatty monoethanol amide and lauryl alcohol succinate monoester are taken, and boric acid is added for performing a catalyst temperature raising reaction; cooling is performed, and sodium bisulfite is added for a reaction; chloroacetic acid is added for a reaction; the asymmetric succinic acid ester type Gemini surfactant is prepared through washing, filtering and drying. The asymmetric succinic acid ester type Gemini surfactant is based on natural fatty acid which is low in price and easy to obtain. The prepared surfactant has the excellent performance of a traditional Gemini surfactant and further has good market applicability because of the characteristics that the preparing process is simple, and raw materials are low in price.
Owner:SHAANXI UNIV OF SCI & TECH
Watermark-free heat transfer printing adhesive
InactiveCN1670101AGood initial adhesionEasy to scrubUnsaturated alcohol polymer adhesivesPolyvinyl alcoholAdhesive
The invention discloses a kind of nonwatermark heat transfer glue which is used in heat transfer art for cementing action as well as makes the colour of the transfer paper get through transfer film up to the materials which need transfer. The formulation is: water of 1000 shares, polyvinyl alcohol 0588 of 100-150 shears, polyvinyl pyrrolidon of 20-30 shears, boracic acid of 3-4.5 shears, acrylamide of 30-80 shears, glycerin of 20-50 shears, ammonium peroxodisulfate of 0.05-0.2 shear, sodium acid sulfite of 0.05-0.2 shear, sodium dodecylbenzene sulfonate of 2-4 shears, sorbitan monostearate of 2-4 shears and alkylphenol polyvinyl ether of 2-4 shears. The one-rotation transfer percent of pass is more than 99%. The said nonwatermark heat transfer glue can be coated on anti-theft gates, fireproof doors, iron furniture, filing cabinets, section bars, wooden furniture, ceramics and transfer paper with all kinds of patterns.
Owner:苏州市丛岭胶粘剂有限公司
Sagittaria sagittifolia beverage with original taste and processing method of sagittaria sagittifolia beverage
InactiveCN104983009APrevent browningAdd flavorFood ingredient as antioxidantFood ingredient as clouding agentBiotechnologyAmylase
The invention relates to a sagittaria sagittifolia beverage with an original taste and a processing method of the sagittaria sagittifolia beverage, and belongs to the technical field of food processing. The sagittaria sagittifolia beverage comprises the following components in percentage by weight: 6-9 parts of sagittaria sagittifolia, 0.01-0.05 part of sodium bisulfite, 0.005-0.05 part of liquefied alpha-amylase, 2-5 parts of white granulated sugar or xylitol, 0.03-0.05 part of sodium salt of carboxy methyl-cellulose, sodium alginate or agar, 0.01-0.05 part of fatty acid glyceride and 85-90 parts of purified water. The processing method comprises the working procedures of pretreatment of raw materials, pulping, filtration, enzymolysis, enzyme deactivation, blending, homogenization, degasification, filling and sealing, sterilization, inspection and like. The sagittaria sagittifolia beverage is strong in flavor, and has the natural and nutritional characteristics; besides, the production process is clean and environmentally friendly, the technology is simple, and industrialized production is easy to achieve.
Owner:YANGZHOU HEZHIFANG FOOD
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