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768 results about "Ph range" patented technology
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Like foods and fluids, your own body has a pH level, and it's actually rather specific. The acceptable range for your pH is between 7.1 and 7.5, according to Alkalize for Health. Anything above this range is considered alkaline, while scores below the range indicate acidity.
Novel dinuclear metal complex and pyrophosphate assay using the same
InactiveUS20050119497A1Increase electron densityEnhanced electron donationUltrasonic/sonic/infrasonic diagnosticsGroup 8/9/10/18 element organic compoundsElectronic densityPyrophosphate
A novel coordination complex formed by dinuclear metal complexation is provided. The complex is a dinuclear metal complex of a compound, wherein the compound comprises a conjugation ring system substituted with: a) an electron donating group selected from —OH, —SH and —NH2; b) an indicating group selected from a chromogenic group, a fluorescent group and an electrochemical group; and c) two binding auxiliary groups, in combination with the electron donating group each of which being coordinated with the metal to provide an anion bonding site, wherein as the complex binds to a anion, the coordination of the electron donating group with the metal is weakened and electron donation of the electron donating group to the conjugation ring system is reinforced such that the reinforced electron donation by the electron donating group is transferred through the conjugation ring system to the indicating group to produce an indicating signal concomitant with the change of its electronic density. The coordination complex shows high sensitivity and high selectivity for pyrophosphate over other anions in an aqueous solvent over a wide pH range. Therefore, the complex is useful for pyrophosphate assay as a pyrophosphate sensor.
Owner:SEOUL NAT UNIV FOUND
pH sensitive lipids based on ortho ester linkers, composition and method
InactiveUS6897196B1Improved endosome-disruptingOrganic active ingredientsBiocideLipid formationCycle time
Owner:RGT UNIV OF CALIFORNIA
Process for chromatographic separation of peptides and nucleic acid, and new high affinity ion exchange matrix
InactiveUS6090288ACation exchanger materialsComponent separationChromatographic separationTransferrin
PCT No. PCT / SE97 / 00237 Sec. 371 Date Dec. 29, 1998 Sec. 102(e) Date Dec. 29, 1998 PCT Filed Feb. 14, 1997 PCT Pub. No. WO97 / 29825 PCT Pub. Date Aug. 21, 1997Process for separating off a peptide or a nucleic acid by an anion exchanger (I) characterized in that a) the anion exchanger (I) exhibits ligands, which (i) contain a primary, secondary or tertiary amino group and (ii) are covalently bound to an organic polymer (matrix), b) there on a carbon atom at a distance of 2 or 3 atoms away from an amino nitrogen in the ligands is a hydroxyl group or a primary, secondary or tertiary amino group, and c) the maximum elution ionic strength in the pH range 2-14 for at least one of the proteins transferrin, ovalbumin 1, ovalbumin 2, beta -lactoglobulin 1 and beta -lactoglobulin 2 on the anion exchanger is higher than the elution ionic strength required for a quaternary comparative ion exchanger.
Owner:GE HEALTHCARE BIOPROCESS R&D
Method for producing basic copper chloride, cupric sulfate pentahydrate from copper-containing etching waste liquid
ActiveCN101391800AEfficient removalImprove product qualityCopper chloridesMultistage water/sewage treatmentCopper chlorideSulfate
The invention relates to a method for producing copper chloride hydroxide and blue vitriod by using cupriferous etching wastewater; the method comprises the following steps: acidic copper chloride etching wastewater and alkaline copper chloride etching wastewater are neutralized and crystallized to get acidic copper chloride crystal under the condition of strictly controlling filling liquid and the Ph range of a reaction kettle, and then pumped and filtrated, and centrifugated; part of the obtained alkaline copper chloride crystal is dried to obtain finished products while the other is added with NaOH solution for alkali conversion to obtain copper oxide, and then is acidulated by sulphuric acid, crystallized, washed, centrifugated, and dried to obtain blue vitriod products. The method for producing blue vitriod by directly using sulphuric acid-oxyful etching wastewater includes the following steps: sulphuric acid-oxyful etching wastewater and composition brass wasterwater in a PCB manufacture are blended together and added with NaOH to form cupric hydroxide precipitation which filtrated, washed, and then acidulated by sulphuric acid to obtain copper sulphate solution; after the copper sulphate solution is cooled, crystallized, centrifugated and dried, and the blue vitriod is obtained.
Owner:HUIZHOU DONGJIANG ENVIRONMENTAL PROTECTION TECH
pH Sensitive Emulsion System
An oilfield treatment fluid in the form of an emulsion wherein the emulsion contains at least one treatment agent sequestered within a phase of the emulsion, wherein the emulsion is stable when the pH is maintained within a predetermined range, and breaks to release the at least one treatment agent when the pH is changed to a release pH value outside the predetermined stable pH range.
Owner:SCHLUMBERGER TECH CORP
Carrier ampholytes of high pH range
Carboxylic acid-substituted polyalkylene polyamines in which amine nitrogen atoms on the polyamine backbone structure are replaced by guanidine groups provide a pH range extending into high pH values. These substances are useful as carrier ampholytes in isoelectric focusing.
Owner:BIO RAD LAB INC
Post-treatment for anodized aluminum
InactiveUS6511532B2Improve corrosion-resistanceImprove adhesion bonding propertySurface reaction electrolytic coatingPretreated surfacesWater solubleSURFACTANT BLEND
Composition for post-treating anodized aluminum and aluminum alloys and the process for using said composition to improve the corrosion-resistance, abrasion, and adhesion bonding properties of the anodized aluminum and its alloys. The composition comprises an acidic aqueous solution having a pH ranging from about 2.5 to 4.5 containing effective amounts of trivalent chromium salts, alkali metal hexafluorozirconates, an alkali metal fluoro-compound e.g. fluoroborates and / or fluorosilicates, and effective amounts of water soluble thickeners and surfactants.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Compositions for the removal of organic and inorganic residues
InactiveUS20050119143A1Soap detergents with organic compounding agentsSurface-active detergent compositionsCarboxylic acidSolvent
A composition and method using same for removing photoresist and / or processing residue from a substrate are described herein. In one aspect, there is provided a composition for removing residue consisting essentially of: an acidic buffer solution having an acid selected from a carboxylic acid or a polybasic acid and an ammonium salt of the acid in a molar ratio of acid to ammonium salt ranging from 10:1 to 1:10; an organic polar solvent that is miscible in all proportions in water; a fluoride, and water wherein the composition has a pH ranging from about 3 to about 7.
Owner:VERSUM MATERIALS US LLC
Hydrogen generation from water split reaction
A composite material comprising a mechanical mixture of aluminum oxide(s) and / or aluminum hydroxide(s) and aluminum (Al) metal, which when submerged in water, produces hydrogen gas at or near to neutral pH. The phenomenon has been demonstrated reproducibly. The evolution of hydrogen gas is dependent on several factors, namely, temperature, pH, proportion and particle size of ingredients and mixing conditions. The water split reaction proceeds for the mass ratio of Al to the oxide or hydroxide varying in the entire range up to the 99% of additive(s). The reaction proceeds in a pH range of water, 9>pH>4, and water temperature, from about 10° C. to 90° C.
Owner:THE UNIV OF BRITISH COLUMBIA
PH stable chromatographic media using templated multilayer organic/inorganic grafting
ActiveUS20060070937A1Ion-exchange process apparatusPhysical/chemical process catalystsChromatographic separationSorbent
An advanced silica gel sorbent for use in chromatographic separations that has been chemically modified by surface polycondensation of a trifunctional and / or difunctional organosilane. The chromatographic media exhibits a wider pH range and improved pH stability as compared to other silica gel based sorbents, while retaining all other positive aspects attributed to silica gel based sorbents. A method of forming the advanced silica gel sorbent by Templated Multilayer Inorganic / Organic Grafting.
Owner:PHENOMENEX INC
Alcohol-free fountain solution with high viscosity and low surface tension
InactiveCN103935150AHigh effective contentReduce pollutionPrinting pre-treatmentAlcohol freeAqueous alcohol
The invention discloses alcohol-free fountain solution with high viscosity and low surface tension. The alcohol free fountain solution with high viscosity and low surface tension comprises the following components by weight, 30-55 parts of alcohol solvents, 2-6 parts of buffer agents, 3-8 parts of wetting agents, 1-4 parts of surface active agents, 0.3-2.2 parts of antifoaming agents, 0.5-3 parts of thickening agents, 0.5-1.2 parts of anticorrosion and bactericidal agents, 1-3 parts of penetrating agents, 0-2 parts of electrolyte and 20-45 parts of viscosity modifier water. The fountain solution is free of volatile solvents containing alcohol and isopropyl alcohol and pollution to the environment, the surface tension ranges from 4*10-2N / m to 7*10-2N / m, pH ranges from 4.8 to 5.5, the heat conduction rate ranges from 800mus / cm to 1200mus / cm, and therefore, quality requirements of the fountain solution can be met better.
Owner:苏州禾川化学技术服务有限公司
Dinuclear metal complex and pyrophosphate assay using the same
InactiveUS7279588B2Ultrasonic/sonic/infrasonic diagnosticsGroup 8/9/10/18 element organic compoundsElectronic densityPyrophosphate
Owner:SEOUL NAT UNIV FOUND
Enterococcus faecium for feeding and applications thereof
InactiveCN102304483AConducive to preservationLong storage timePowder deliveryBacteriaFreeze-dryingAntibiotic Y
The invention relates to enterococcus faecium for feeding as well as a freeze-drying fungicide and applications thereof, and discloses enterococcus faecium LAB12 CGMCC (China General Microbiological Culture Collection Center) No.4847 which is grampositive cocci, has no spores, grows well on an MRS agar plate, forms a round bacterial colony with the diameter of 0.5-1mm within 48 hours and is used for feeding, and the bacterial colony is round, smooth and upheaved, and is a shape of grey white dewdrop; the enterococcus faecium grows in a facultative anaerobic condition; the growth temperature range is 10 DEG C-45 DEG C; the optimum growth temperature is 30 DEG C-40 DEG C; and the growth pH value is 4-10, and the optimum pH value is 6.0. The freeze-drying fungicide formed by the bacterial strain is nontoxic and harmless, is gastric juice resistant, is cholate resistant, has a high inhibitory effect for multiple harmful bacteria, has a long quality guarantee period, can be widely applied to birds and livestock breeding to strengthen the animal disease-resistant capability, and is expected to be the substitution of antibiotics for feeding.
Owner:北京金泰得生物科技股份有限公司
Alkali-resistant disperse dye complex
The invention discloses an alkali-resistant disperse dye complex, and relates to disperse blue BR-based alkali-resistant disperse dye complexes suitable for dyeing in a wide pH range. The complex comprises (1) alkali-resistant disperse dye blue complex, or (2) alkali-resistant disperse dye blue complex, or (3) alkali-resistant disperse dye black complex. The disperse dye complex of the invention has good dispersibility, dyeing stability and good reproducibility, and can effectively avoid the problems of stains, flaws, chromatic aberration and the like caused by dirt such as slurry, oil stain,wax and the like on fibers; and the pH value has wide range during use, dyeing can be performed in the pH range of 4.0 to 11.25, the dyed fabrics have full hue, and the dyed fabrics with predominant color fastness performance such as washing fatness, daylight fastness and the like can be obtained without reduction clearing.
Owner:HANGZHOU JIHUA JIANGDONG CHEMICAL CO LTD
Organic recycling with metal addition
InactiveUS20050039508A1Reduce slurry viscosityAvoid flowAnimal corpse fertilisersAlkali orthophosphate fertiliserSolubilityIron sulfate
The invention is directed to methods for producing a granular nitrogen fertilizer from an organic material comprising adding a metallic salt to said organic material to form a slurry. Preferably the organic material comprises dewatered biosolids and contains water from a scrubber. Metallic salts that can be used comprise a salt of iron, zinc, or a mixture thereof. Preferred iron salts comprises ferric sulfate or ferric oxide, and preferred zinc salts comprises zinc sulfate or zinc oxide. Preferably, the metallic salt is mixed with an acid such as sulfuric acid to form an acidified metal salt. Slurry pH ranges from approximately 2-2.5. The acidified metal salt is added to the organic material in sufficient quantity to lower viscosity of the slurry such that the resulting fluid does not hinder fluid flow during operation. When the metallic salt comprises acidified ferric sulfate or ferrous sulfate, sufficient iron can be present to produce a fertilizer product with 0.1 weight percent to 10 weight percent iron sulfate calculated on a dry weight basis. The invention is also directed to fertilizer products made by the methods of the invention. Preferred products are granules and the metallic salt increases product hardness. Fertilizer granules preferably contain metal that is bioavailable to a plant when used as a fertilizer. Solubility of the metal of the product in water is enhanced, and the product is low staining.
Owner:UNIFIED ENVIRONMENTAL SERVICES GROUP +1
Composition for odor control
ActiveUS20050115895A1Promote growthInhibition productionSpecific water treatment objectivesWater contaminantsSpecific enzymeWaste stream
A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating compound, which both decreases the amount of gaseous H2S and puts the aqueous phase into a pH range where naturally occurring bacteria can more easily metabolize the sulfide. The composition also includes one or more nitrate salts which will accomplish longer term prevention of odors. Specific bacteria are incorporated into the formulation to insure that the nitrate has the right type and amount of bacteria present to prevent formation of and / or consume sulfide. Specific enzymes are incorporated into the formulation to promote oxidation of sulfide.
Owner:EVOQUA WATER TECH LLC
Integrated technology in sequential treatment of organics and heavy metal ions wastewater
InactiveUS20050274678A1Reduce impactQuality improvementWaste water treatment from metallurgical processSedimentation separationSurface finishSludge
This invention offers an integrated technology in sequential treatment of wastewater. Low biodegradable organics and heavy metal ions are both contained in wastewater from surface finishing processes. The aim of the invention is to find the solution for treatment of organics and heavy metal ions in complicated wastewater that contains organics and heavy metal ions sequentially. Low biodegradable organics are oxidized by a fenton process with pH ranging from 2 to 5 and temperature ranging from 20° C. to 100° C. Heavy metal ions are then treated by a ferrite process with pH ranging from 8 to 12 and temperature ranging from 20° C. to 100° C. The integrated technology of the fenton process and the ferrite process (2FP) is advantageous to treat the wastewater from surface finishing processes, decrease the production of iron sludge caused in the fenton process and increase the quality of ferrite products.
Owner:NAT CHENG KUNG UNIV
Use of quaternaries compound in floating silicate mineral
The invention relates to the field that biquaternary ammonium compounds are applied in silicate mineral flotation, and discloses a collector which applies the biquaternary ammonium compound with the constitutional formula shown as the formula I in bauxite or ironstone reverse flotation desiliconization. In the formula I, R<1> and R<2> are alkyls with 6-18 carbon atoms; R<3>, R<4>, R<5> and R<6> are respectively methyl, ethyl, -(CH2CH2O)nH, or -(CH(CH3)CH2O)nH, wherein, n is equal to 1-6; R<7> is alkylene with 2-6 carbon atoms; and X is Cl, Br or I. The collector of the invention has strong ability to collect quartz, kaolinite, illite and pyrophyllite, and is applicable to the silicate mineral separation from the bauxite or ironstone by reverse flotation, the suitable pH range of the flotation pulp is 5-13, and the dosage is equal to 50-500 g / t according to the content change of the silicate mineral in ores.
Owner:CENT SOUTH UNIV
Synergistic compositions for the selective control of tumor tissue
Owner:KREUTZ WERNER
Chitosan graft ternary polymerization polymeric flocculant and its preparation method and use
InactiveCN1654497AImprove performanceWater/sewage treatment by flocculation/precipitationAluminium chlorohydrateNon ionic
The present invention discloses one kind of chitosan-grafting ternary copolymer flocculant and its preparation process and application. Chitosan is first dissolved in acid solution and made to produce grafting polymerization with non-ionic monomer, cationic monomer and non-ionic surfactant under the action of initiator at 30-75 deg.c for 2-6 hr; and the reaction product is then added with alkali to regulate the pH value to 3.5-5.5, so as to obtain the chitosan-grafting ternary copolymer flocculant. The produced flocculant is used in sewage treatment, and has treating effect higher than available marketable flocculants, small use amount, wide application pH range, large flocculated product, fast deposition and other advantages.
Owner:SOUTH CHINA UNIV OF TECH
Polishing compositions and methods for polishing cobalt films
ActiveUS20160068710A1Good removal effectGood choiceSemiconductor/solid-state device manufacturingSurface treatment compositionsDielectricPhysical chemistry
The present disclosure relates to polishing compositions that can polish Cobalt (Co) films in semiconductor substrates containing a multitude of films including Co, metals, metal oxides and dielectrics. These polishing compositions comprise an abrasive, a weak acid acting as a removal rate enhancer (RRE), a pH adjuster, and an azole-containing corrosion inhibitor (CI). The RRE, pH adjuster and CI have a pKa in the 1-18 range (1 (pKamin)<pKa<18 (pKamax)). The pKa values of the individual components are related to the pH of the polishing composition / slurry (pHslurry) by the following equation: pKamin+6<pHslurry<pKamax−6. The polishing composition also has less than about 100 parts per million (ppm) of sulfate ions and less than about 100 ppm of halide ions, and operates in the 7-12 pH range.
Owner:FUJIFILM ELECTRONICS MATERIALS US
Pretreatment for aluminum and aluminum alloys
InactiveUS6669764B1Reduce electrical contact resistanceImprove adhesionPretreated surfacesSolid state diffusion coatingChromium CompoundsZinc compounds
Pretreated aluminum and aluminum alloys and the process and composition for pretreating said aluminum and its alloys to provide a coating with color recognition for identification purposes and to improved the corrosion-resistance, electrical conductivity, and adhesion properties which comprises pretreating said aluminum and its alloys with an effective amount of an acidic aqueous solution having a pH ranging from about 2.5 to 5.5 comprising water soluble trivalent chromium compounds, alkali metal hexafluorozirconates, divalent zinc compounds, alkali metal fluoro-compounds, and effective amounts of water soluble thickeners, surfactants or wetting agents.
Owner:CHIEF OF NAVAL RES
Method for on-site treatment of oil and gas well waste fluids
InactiveUS7022240B2Economic treatmentRaise the pHTreatment involving filtrationCentrifugal force sediment separationSites treatmentLiquid waste
An apparatus and method for on-site treatment and reclamation of oil and gas well waste water or fracturing fluids. The mobile treatment process and apparatus provide both chemical precipitation and filtration to treat the drilling fluid waste to a technically and environmentally acceptable level allowing for reuse. Alkaline treating agents are applied to the drilling waste fluids, as they are pumped through the treatment apparatus, to increase the pH of the fluid waste to a preferred pH range and to also cause selective soluble contaminants in the fluids to form a precipitate. The waste fluid is allowed to clarify as the precipitate of insoluble contaminants, through flocculation, settle and form a sludge at the bottom of the drilling pit. The clarified fluids are then filtered to satisfy applicable industry and environmental requirements.
Owner:FLUID RECOVERY SERVICES
Hydrolysis resistant organomodified silyated surfactants
Organomodified silylated surfactant compositions that exhibit resistance to hydrolysis over a wide pH range
Owner:MOMENTIVE PERFORMANCE MATERIALS INC
Stabilized, aqueous silicon dioxide dispersion
ActiveUS7374787B2Stable rangePigmenting treatmentOther chemical processesZeta potentialSilicon dioxide
An aqueous dispersion, having a silicon dioxide powder having a silicon dioxide content of 10 to 60 wt.%, wherein the aqueous dispersion is stable in the pH range of 2 to 6, the aqueous dispersion additionally contains at least one compound, which is at least partially soluble in aqueous solution in the pH range 2 to 6 in the form of polyvalent cations, these being stable in a silicate-like environment as an anionic component of the particle surface of the silicon dioxide powder, the quantity of cation-providing compound in relation to the surface of the silicon dioxide is 0.001 to 0.1 mg cation-providing compound / m2 silicon dioxide surface, the cation-providing compound being calculated as the oxide, and the zeta potential of the aqueous dispersion has values of less than or equal to zero.
Owner:EVONIK DEGUSSA GMBH
Post-treatment for metal coated substrates
InactiveUS6663700B1Metal-working apparatusSolid state diffusion coatingChromium CompoundsZinc compounds
Aqueous compositions for post-treating metal coated substrates such as cadmium-plated steel, and zinc-nickel coated substrates and the process for using said compositions to provide a color recognizable coating and to improve the corrosion-resistance, abrasion, electrical, and adhesion properties of the coating. The post-treatment composition comprises an acidic aqueous solution having a pH ranging from about 2.5 to 5.5 and contains effective amounts of trivalent chromium compounds, alkali metal hexafluorozirconates, at least one divalent zinc compound, alkali metal fluoro-compounds, and effective amounts of water soluble thickeners, wetting agents or surfactants.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Enzymatic cleaner having high pH stability
InactiveUS20030089381A1High activityImprove efficiencyOrganic detergent compounding agentsSoap detergents with inorganic compounding agentsMicroorganismOrganic matter
The present invention is directed to a cleaning composition comprising: (a) an enzyme in an amount effective to promote cleaning; (b) viable microorganisms in an amount effective to degrade and promote the degradation of organic materials; (c) a surfactant; and (d) an aqueous carrier; said cleaning composition maintaining at least 95% enzymatic activity at a pH range of from about 5.5 to about 13.5.
Owner:TREYCO SUPPLY
Enzymatic cleaner having high pH stability
InactiveUS7183248B2Organic detergent compounding agentsSoap detergents with inorganic compounding agentsMicroorganismOrganic matter
The present invention is directed to a cleaning composition comprising: (a) an enzyme in an amount effective to promote cleaning; (b) viable microorganisms in an amount effective to degrade and promote the degradation of organic materials; (c) a surfactant; and (d) an aqueous carrier; said cleaning composition maintaining at least 95% enzymatic activity at a pH range of from about 5.5 to about 13.5.
Owner:TREYCO SUPPLY
Water-based offset lithographic newspaper printing ink
A single fluid water-based offset lithographic news ink comprising water; a macromolecular resin binder comprised of a resin soluble in water regardless of the pH of the water, a rosin salt resin soluble in water at pH ranging from 7.5 to 10 and an aqueous emulsion polymer; pigment; a water dispersible soy bean based polymer; and a hydroxyethylehtylene urea re-wetting agent.
Owner:SUN CHEM CORP
Color change surgical prep solution
InactiveUS20080081020A1Antibacterial agentsUltrasonic/sonic/infrasonic diagnosticsPh regulationSolvent
This invention discloses a surgical prep solution formulation, either film forming or non-film forming, that changes color upon a change in pH to indicate that the solvent has sufficiently evaporated. The major components of this surgical prep solution include: antimicrobial agents, solvents, pH adjusters, color changing pH indicators, and optionally: film forming polymers, dyes and viscosity regulators. The pH of the solution may rise or fall depending on the pH of the original solution as compared with the normal pH range of the acid mantle of the human skin or the normal pH range of a sterilizing solution. As the pH changes, the pH indicator may cause the surgical prep solution to change color. Concurrently, as the fluids evaporate, the pH indicators interact with atmospheric CO2, causing the solution to change color based on the pH of the solution. The solution may also be used as coating for medical devices.
Owner:CAREFUSION 2200 INC
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