15 results about "Hypohalite" patented technology

Provided is a treatment liquid for etching a transition metal on a semiconductor wafer, the treatment liquid comprising: (A) a hypohalite ion or periodate ion; and (B) an alkylammonium salt represented by the following Formula (1).(wherein a is an integer from 6 to 20, R1, R2, and R3 are independently a hydrogen atom or an alkyl group having carbon number from 1 to 20, and X− is a bromine-containing ion), and a method of etching a transition metal by bringing the treatment liquid for semiconductor wafers into contact with the transition metal used in a semiconductor formation process.

A method of producing crystalline cellulose from a cellulosic material includes the step of reacting the cellulosic material in an aqueous slurry comprising a transition metal catalyst and a hypohalite solution.

A cleaning concentrate dilution system includes a dual chamber system in which a plurality of concentrated formulations are provided, including a first formulation provided in a first chamber and including a hypohalite, and a second formulation provided in a second chamber and including one or more components that are sensitive to concentrated hypohalite, such as certain surfactants and certain fragrances. The system further includes a dispensing container that receives the first and second formulations as well as water to dilute the first and second formulations within the dispensing container.

The present invention relates to a method of preparing an organosulfur compound, and more particularly, to a method of preparing an organosulfur compound including a step of synthesizing an organosulfur compound by reacting specific compounds with a metal hypohalite under a ruthenium catalyst in a mixed solvent containing water and an organic solvent, wherein the metal hypohalite is introduced in a solid state and a portion thereof reacts in an undissolved state. According to the present invention, the present invention has an effect of providing an organosulfur compound preparation method capable of preparing an organosulfur compound in high yield due to excellent reaction stability, short reaction time, and reduced side reactions.

According to the wastewater treatment device for synchronously removing uranium, manganese and ammonia nitrogen through the oxidation method and the using method, a novel pipeline mixer is adopted as a reaction device, compared with a traditional technology, a stirring device is omitted, the whole technological process is closed, no leakage risk exists, and the cost is low. An oxidizing agent hypohalite solution is added into the wastewater through a pipeline dosing port, and precipitates are removed after full reaction, so that the content of uranium, manganese and ammonia nitrogen in the wastewater can be greatly reduced. The method has the advantages of few types of chemicals, no need of special process, easiness in large-scale implementation, small occupied area and suitability for batch wastewater treatment of uranium tailings ponds and the like.

The present invention provides a semiconductor wafer treatment liquid, the treatment liquid including at least one hypohalite ion, and at least one anion species selected from halate ion, halite ion and halide ion, wherein at least one of the anion species has a content of 0.30 mol / L or more and 6.00 mol / L or less relative to the treatment liquid.

The present invention relates to a water treatment method for treating water, comprising the steps of adding a treatment agent a) containing at least one hypohalitic acid to the water to be treated, adding a treatment agent b) comprising at least one alkali metal hypohalite salt or at least one aqueous alkali metal hypohalite salt solution to the water to be treated, and adding a treatment agent c) comprising at least one peroxide or an aqueous solution of a peroxide to the water to be treated, in order to obtain treated water. Furthermore, the present invention relates to an apparatus for carrying out the water treatment method according to the invention.

The application discloses N-halamine antibacterial microspheres of a maleimide copolymer and a preparation method and application thereof, and belongs to the technical field of antibacterial materials. The maleimide copolymer crosslinked microspheres can simultaneously contain maleamic acid groups and maleimide groups, and after halogenation by a hypohalite, the amide groups / imide groups can be modified into N-halamine groups with antibacterial effects. The N-halamine antibacterial microspheres of the maleimide copolymer can efficiently kill staphylococcus aureus and escherichia coli.

The invention discloses N-halamine antibacterial microspheres of a maleimide copolymer as well as a preparation method and application of the N-halamine antibacterial microspheres, and belongs to the technical field of antibacterial materials. The N-halamine antibacterial microspheres of the maleimide copolymer have the advantages that acylamino / imide groups can be modified into N-halamine groups with antibacterial effects after the N-halamine antibacterial microspheres of the maleimide copolymer are subjected to halogen amination by the aid of hypohalide acid salts, and the N-halamine antibacterial microspheres of the maleimide copolymer can be used for efficiently killing staphylococcus aureus and escherichia coli.

This invention relates to a halogenated amine-based antibacterial porous organic polymer-based composite fiber material, its preparation, and its application. The preparation method uses cellulose-based fibers as the substrate and melamine chloride and polyamine compounds as precursor monomers for the halogenated amine-type porous organic polymer. Through a surface activation-in-situ synthesis reaction, a composite fiber material modified with a high-density secondary amine-based porous organic polymer is obtained. This is followed by a hypohalite rinsing treatment to obtain an antibacterial halogenated amine porous organic polymer composite fiber material (NX-POP@Cell). Compared with existing technologies, the method provided by this invention achieves high-density grafting of antibacterial halogenated amine structures onto cellulose fibers through a simple and efficient preparation method, resulting in a final material exhibiting rapid and efficient contact sterilization performance. It has significant market potential in fields such as water filtration and medical protection.

A semiconductor processing liquid comprising a carboxylic acid and a hypohalite ion, wherein the concentration of the carboxylic acid is 0.0001-1.0 mol / L, the hypohalite ion is at least one selected from the group consisting of hypochlorite and hypobromite ions, the concentration of the hypohalite ion is 0.0001-3.0 mol / L, and the pH of the semiconductor processing liquid at 25°C is 7.0-14.0.

The invention relates to the technical field of organic synthesis, in particular to a preparation method of 1, 4-butanediamine, which comprises the following steps: S1, heating and melting adipic acid, and carrying out ammonification reaction on the adipic acid in the molten state and ammonia gas; s2, after the ammoniation reaction is finished, raising the temperature to carry out dehydration reaction, enabling by-product water and unreacted ammonia gas to enter a recovery device through a condensation system, and carrying out dehydration reaction to obtain adipamide; and S3, after the dehydration reaction is finished, adding a hypohalite aqueous solution and alkali, heating for reaction, and after the reaction is finished, performing post-treatment purification to obtain a 1, 4-butanediamine product. The preparation method of the 1, 4-butanediamine is good in selectivity, the purity of the prepared 1, 4-butanediamine is 99.5% or above, and the yield of the prepared 1, 4-butanediamine is 90% or above. The preparation method disclosed by the invention is simple to operate, low in raw material price, mild in reaction condition, small in danger coefficient and convenient for industrial production.

The present invention is for an acidic cleaning composition which has excellent cleaning performance, low toxicity and good antimicrobial efficacy. The inventive acidic cleaning compositions are capable of sanitizing or disinfecting a variety of hard surfaces. The inventive acidic cleaning compositions can take a variety of forms, such as: disinfecting wipes, all-purpose disinfecting sprays, kitchen cleaners, bathroom cleaners, toilet cleaners, etc. The compositions may meet EPA DfE requirements, EPA category III or IV requirements, and / or be safe for use on food contact surfaces without rinsing. The compositions may include citric acid, an anionic surfactant, a non-volatile glycol solvent, a fatty acid, and water. The compositions may be free of other sanitizing acids, quaternary ammonium compounds, biguanides, peroxides, hypohalites, etc., and have a pH of less than 2.5. The composition may provide sanitization or disinfection against a target microbe within 5 minutes or less, or 4 minutes or less.

The present invention is for an acidic cleaning composition which has excellent cleaning performance, low toxicity and good antimicrobial efficacy. The inventive acidic cleaning compositions are capable of sanitizing or disinfecting a variety of hard surfaces. The inventive acidic cleaning compositions can take a variety of forms, such as: disinfecting wipes, all-purpose disinfecting sprays, kitchen cleaners, bathroom cleaners, toilet cleaners, etc. The compositions may meet EPA DfE requirements, EPA category III or IV requirements, and / or be safe for use on food contact surfaces without rinsing. The compositions may include citric acid, an anionic surfactant, a non-volatile glycol solvent, a fatty acid, and water. The compositions may be free of other sanitizing acids, quaternary ammonium compounds, biguanides, peroxides, hypohalites, etc., and have a pH of less than 2.5. The composition may provide sanitization or disinfection against a target microbe within 5 minutes or less, or 4 minutes or less.

Disclosed is an impurity removal and modification method for pyrolysis carbon black of waste tires, the method comprising: dispersing pyrolysis carbon black of waste tires in an alkali solution of potassium ferrate; adding hypohalite; leaving to stand for layering; and performing centrifugation and washing on a lower-layer slurry to obtain a stably dispersed pyrolysis carbon black / water suspension. This modification method can be operated simply and easily; and by means of the method, ash in pyrolysis carbon black of waste tires can be effectively removed, and the pyrolysis carbon black is then stably dispersed in water. In addition, the modification method is low in production cost, and is green and environmentally friendly, and a waste liquid thereof can be recycled.