74 results about "Aminopolycarboxylic acid" patented technology

Polishing slurry is caused to be present between a surface of a soft magnetic layer and a polishing tool such as a polishing pad and the surface of the soft magnetic layer and the polishing tool are moved relative to each other. The polishing slurry contains silica particles as abrading particles, compounds containing carboxylic acid and amino polycarboxylic acid and an oxidizing agent as a polishing accelerator, organic and/or inorganic compound of phosphoric acid, nitride and/or nitrite as an anti-corrosion agent and a pH conditioner such that the slurry has pH value between 4 and 11.

Described is a method for treating wood, in which the wood is brought into contact with a mixture of liquid or water-soluble organic ammonium carboxylate and an active ingredient which repels invertebrates, characterized in that the organic ammonium carboxylate has the formula (1):

[NR¹R²R³R⁴]⁺_n[R⁵(COO)_n]⁻ⁿ  (1),

in which R¹, R² and R³ are selected from hydrogen, substituted and unsubstituted alkyls containing 1-6 carbon atoms, R⁴ is a substituted or unsubstituted alkyl containing 1-6 carbon atoms, R⁵ is hydrogen, a substituted or unsubstituted hydrocarbon containing 1-6 carbon atoms and n is an integral 1-6 and whereby wood-preservative active ingredient contains a chelating agent which repels invertebrate, which chelating agent is selected from an aminopolycarboxylic acid or a salt thereof, a hydroxy acid or a salt thereof or a phosphonate or a salt thereof or a mixture of chelating agents which belong to two of more groups thereof.

The invention is directed to a method of chemically-mechanically polishing a a surface of a substrate, comprising contacting a surface of a substrate comprising nickel-phosphorous with a chemical-mechanical polishing composition comprising wet-process silica, an agent that oxidizes nickel-phosphorous, and an aminopolycarboxylic acid, wherein the polishing composition has a pH of about 1 to about 5, and abrading at least a portion of the nickel-phosphorous to polish the substrate.

The invention provides application of acyl amino polycarboxylic acid/hydroximic acid like compound in mineral flotation. A structural formula of the acyl amino polycarboxylic acid/hydroximic acid likecompound is shown as a formula (I); (shown in the description) wherein R in the formula (I) represents aliphatic hydrocarbyl of C<6>-C<18>, n=1-3, and M1, M2, M3 and M4 are separately selected from one or several of -OH, -ON, -OK, -NHOH, -NHON or -NHOK. And n<1>=1-3, n<2>=1-3, and n<3>=1-3. The acyl amino polycarboxylic acid/hydroximic acid like compound is used as a collecting agent to enhance the chelation and recognition action on metal oxidized ores, facilitate ordered arrangement of the collecting agent on the mineral surface, effective flotation recovery is carried out on tungstenores, rare earth ores, tin ores, lithium ores, phosphorus ores, manganese oxide ores, cooper oxide ores, fluorites or titanium iron ores, the acyl amino polycarboxylic acid/hydroximic acid collectingagent has the advantages of high collecting capacity, high selectivity, low ton ore use amounts and the like, and is especially suitable for processing difficultly selected fine grain ores.

The invention belongs to the technical field of sulfur recovery and particularly relates to a system and a method for reducing sulfur dioxide emission concentration of a sulfur recovery device and a desulfurization agent. The desulfurization agent comprises aminopolycarboxylic acid chelate iron, an aminopolycarboxylic acid chelating agent, acrylamide and fatty alcohol polyoxyethylene ether-9 and water. The system comprises a complex iron desulfurization device, the sulfur recovery device and a liquid sulfur tank gas stripping device; tail gas generated by degassing of a liquid sulfur tank and the sulfur recovery device is purified in a complex iron desulfurization system, so that various factors causing sulfur dioxide emission of the sulfur recovery device are radically eliminated from the source; the sulfur dioxide concentration of flue gas after incineration is guaranteed to be lower than 50 mg/Nm<3>; thermal reaction and conversion parts of an existing sulfur recovery device are not changed, so that the investment is low and the running cost is low; air is utilized for degassing of the liquid sulfur tank and serves as regeneration air of the complex iron desulfurization system, so that the running cost of liquid sulfur degassing purification is reduced; a comprehensive and complete solution is provided for reducing the sulfur dioxide emission concentration of the sulfur recovery device.

[Problem] To provide a thixotropic agent having excellent thixotropic properties. [Solution] A thixotropic agent contains a clay mineral compound formed from a phyllosilicate mineral having between layers at least one of an alkali metal ion and alkaline earth metal ion as the interlayer metal ion. A metal complex compound obtaining by bonding an aminopolycarboxylate or a derivative of the aminopolycarboxylate to the interlayer metal ion is, as the active species, introduced between the layers of the phyllosilicate mineral to produce the clay mineral compound.

The invention discloses a novel continuous automated reaction process for preparing an aminopolycarboxylic acids chelating agent and belongs to the technical field of aminopolycarboxylic acids chelating agents. Production is conducted through a flow reactor, a whole reaction system is under DCS automation control, and the process comprises the following steps: 1, material blending and mixing, wherein raw materials are continuously and stably pumped into a batcher for mixing, so that a liquid mixture is obtained; 2, preheating treatment, wherein the liquid mixture is pumped out of the batcher through a material delivering pump, and the liquid mixture which is pump out is subjected to heating treatment through a heater; 3, reaction and generation, wherein heated liquid materials and formaldehyde or heated liquid materials and a glycolonitrile solution are added into the reactor for a reaction, ammonia gas generated through the reaction is discharged through the top of the reactor and collected, and a reaction solution is drained through the bottom of the reactor and delivered to the acidification procedure for after-treatment through the material delivering pump, so that the aminopolycarboxylic acids chelating agent is obtained. By means of the process, the aminopolycarboxylic acids chelating agent can be produced in a continuous and automated mode, and stability of the reaction process is improved.

The present invention relates to a method for synthesizing a electron-ion mixed conducting material with a K2NiF4 structure of the La2-xSrxNi1-yMeyo4+delta system. The carbonate or hydroxide of various component elements is mixed with diethylenetriamine pentaacetic acid in deionized water according to the stoichiometric ratio of synthetic product, the mixture is heated and agitated so that the carbonate or hydroxide is dissolved completely to form clarifying and transparent solution of precursor, and then the transparent glass state aminopolycarboxylic acid complexes precursor is obtained by means of heating and drying; finally, the complexes precursor is heated to create the ultramicro composite powder with single K2NiF4 structure. The present invention has a simple synthesizing technology, a low synthesizing temperature, a short synthesizing time, a controllable synthesizing process, and an excellent repeatability. The synthetic product has a high phase purity, fine and uniform particles, and can be widely used as the cathode of moderate temperature solid oxide fuel battery, and used for the electrochemical sensor and the oxygen separation membrane, and has a broad application prospect.

A cleaning composition is provided. The cleaning composition includes at least one polyamino-polycarboxylic acid or at least one salt thereof, at least one solvent, at least one substituted or non-substituted phenethylamine and water. The solvent is selected from a group consisting of glycols.

The present invention provides a method for treating a wastewater which enables one to treat a difficultly biodegradable wastewater, particularly an organic wastewater containing aminopolycarboxylic acids to substantially decrease COD at a low cost, in which the method for treating an organic wastewater containing aminopolycarboxylic acids, comprising subjecting the organic wastewater containing aminopolycarboxylic acids to a high-speed electrolytic oxidation treatment, particularly, a method for treating an organic wastewater which comprises conducting treatment with microorganism subsequent to the high-speed electrolytic oxidation treatment.

The invention provides an indium oxalate dissolving agent composition, which solves the prior problems. The indium oxalate dissolving agent chemically dissolves and removes the indium oxalate deposited on a wet etching device of a transparent conductive film formed by a tin indium oxide (ITO) film or an indium zinc oxide (IZO) film. The invention relates to a dissolving agent composition for dissolving and removing the indium oxalate deposited in the etching device system, characterized in that: the dissolving agent composition is an aqueous solution containing an alkali component and one or more two kinds of compounds selected from aminopolycarboxylic acid and its salt. The invention also relates to a cleaning method in the etching device system using the dissolving agent composition.

A process for curbing of emissions of toxic metals and chelating agent from remediated soils, sediments and other substrates contaminated with toxic metals, said process comprising: (a) remediation of contaminated soil, sediment and other substrate with washing solution, said washing solution comprising EDTA or other chelating agent from the group of aminopolycarboxylic acids and their salts and mixtures thereof; (b) addition of 0.05-5% (w/w, dry weight) of zero-valent Fe or Fe compounds from the group of Fe-oxides and Fe-oxide-hydroxides into the slurry phase of soil, sediment and other substrate; (c) mixing of Fe-amended slurry; (d) separation of solid phase of remediated and Fe-amended soil, sediment and other substrate; (e) ageing of remediated and Fe-amended soil, sediment and other substrate for 0.5-45 days.

The invention discloses a zinc phenanthroline aminopolycarboxylate complex as well as a preparation method and an application thereof in anti-tumor drugs, and belongs to the field of an anti-tumor technology. The zinc phenanthroline aminopolycarboxylate complex disclosed by the invention is prepared by mixing, heating and reacting zinc salt, aminopolycarboxylic acid and phenanthroline in an aqueous phase. The complex is relatively strong in anti-tumor activity, and can be used as a raw material for preparing liver cancer and breast cancer treating drugs; compared with platinum-based anti-tumor drugs which are commonly used at present, the complex disclosed by the invention has the characteristics of high anti-tumor activity, low toxic and side effects, short crystallization and separation time, good water solubility, high purity, low raw material cost, simple preparation method and the like.

Flexographic printing members are prepared by developing an exposed flexographic printing member precursor with an aqueous flexographic developer. The aqueous flexographic developer comprises: a) a fatty acid composition consisting of one or more saturated or unsaturated fatty acids or alkali metal salts thereof, each saturated or unsaturated fatty acid or alkali metal salt thereof independently having 12 to 20 carbon atoms, the fatty acid composition being present in an amount of 0.25-2.0 weight %, and at least 85 weight % of the fatty acid composition is composed of one or more C18 mono- orpoly-unsaturated fatty acids or alkali metal salts thereof; b) an aminopolycarboxylic acid or alkali metal salt thereof in an amount of 0.05-0.30 weight %; c) a buffer compound in an amount of 05-0.60weight %; and d) water. Such aqueous flexographic developers can also be provided in concentrated form and appropriately diluted before or during use.