33 results about "Polyethylene glycol alkyl ether" patented technology

A method for maintaining a consistent, low viscosity profile of a unit dose detergent composition for enhanced hydration and dissolution upon hydration including the steps of: (1) A method for maintaining a consistent, low viscosity profile of a unit dose detergent composition for enhanced hydration and dissolution upon hydration including the steps of: (1) providing the detergent composition including: about 2.5 to about 15 wt. % of a polyglycol, an alkyl-ether sulfate, a linear alkylbenzene sulfonate, and a fatty alcohol ethoxylate, wherein the alkyl-ether sulfate, linear alkylbenzene sulfonate, and fatty alcohol ethoxylate are collectively present in an amount of 30 to 70 wt. %, by weight of the detergent composition; and (2) encapsulating the detergent composition in a pouch made of a water soluble film.

The invention discloses a collecting agent for flotation of complex and difficult-to-treat copper sulfide silver ore, which is prepared by mixing the following components in percentage by mass: 55 to 75 percent of sulfur nitrogen nitrile ester, 20 to 40 percent of ethionine ester and 5 to 15 percent of polyethylene glycol alkyl ether. The collecting agent disclosed by the invention not only has very strong collecting performance, but also has foamability, so that the cost of a foaming agent can be saved in production; due to the fact that the collecting agent MT-23 is high in capacity, the total consumption of the agent per ton of ore is extremely low; the flotation cost is saved by more than 25% compared with that of an existing agent; the collecting agent is non-toxic, odorless and easy to degrade, belongs to a green and environment-friendly mineral separation collecting agent, and has a wide popularization prospect. By the adoption of the method, the recovery rate of copper and silver can be remarkably increased on the premise that the quality of copper-silver concentrate products is guaranteed, and the method has the advantages of being simple in technological process, stable, reliable, high in applicability, simple in reagent system, small in reagent dosage, convenient to add and the like.

The invention relates to the technical field of in-vitro detection, in particular to a kit for determining glucose content and application thereof. The kit comprises an anti-chyle interference reagent, and the anti-chyle interference reagent is selected from one or more of a polyethylene oxide fatty alcohol nonionic surfactant, a polyethylene oxide-propylene oxide fatty alcohol nonionic surfactant, a polyethylene glycol alkyl ether nonionic surfactant and a mixed fatty glyceride nonionic surfactant. On the basis of basic components of the glucose determination kit, 0.01%-10% of one or more specific surfactants are added into a detection reagent, so that the interference of chyle in a lipid blood sample on glucose determination is eliminated, and the accuracy of glucose detection in the lipid blood sample is improved; the reagent is simple in component and easy to produce and prepare; and the cost is low, and commercialization is easy.

The invention relates to the technical field of in vitro detection, in particular to a kit for measuring glucose content and its application. The kit includes an anti-chylopathic interference reagent selected from the group consisting of poly(ethylene oxide) fatty alcohol nonionic surfactants, poly(ethylene oxide-propylene oxide) fatty alcohol nonionic surfactants. One or more of the non-ionic surfactants of polyethylene glycol alkyl ethers, mixed fatty acid glycerides non-ionic surfactants. The invention is based on the basic components of the glucose determination kit, and adds 0.01% to 10% of one or several specific surfactants in the detection reagent, so as to eliminate the interference of chyle in the lipid blood sample to the glucose determination, and improve the lipid blood level. The accuracy of glucose detection in the sample; the reagent composition is simple, easy to produce and prepare; the cost is low, and it is easy to commercialize.

The invention discloses an application of a hydroxyl-terminated polymer in the preparation of a multifunctional polyurethane soft foam dressing, which comprises hydrophilic substances including hydroxyl-terminated polyethylene glycol alkyl ether, single-terminated hydroxyl polyvinylpyrrolidone and hydroxyl-terminated polyether quaternary Mix ammonium salt with surfactant and water to make functional foaming component A; then react polyether polyol, chain extender and catalyst with polyisocyanate to prepare polyurethane prepolymer component B; The flexible foaming component A and the polyurethane prepolymer component B are mixed and foamed to prepare a multifunctional polyurethane soft foam plastic, which is used to produce a product with the functions of hydrophilicity, water absorption, moisturizing, antibacterial, sterilizing, hemostasis, and promoting healing. Medical dressing.

Super-concentrated liquid rinse cycle fabric softeners are provided which contain more than 35 %, by weight, of a fabric softening system based on an amidoamine fabric softener, such as bis(tallow amidoethyl)-2-hydroxyethyl amine and a quaternary diester fabric softener, such as N-methyl, N,N,N-triethanolamine ditallow ester quaternary ammonium salt. A fatty alcohol ethoxylate surfactant and a polyethylene glycol polymer or a polyethylene glycol alkyl ether polymer are integral components of the liquid composition. The super-concentrated compositions may be used at low levels or may be further diluted prior to use.

The invention discloses a preparation method of a second monomer for an acrylonitrile-based copolymer solid-solid phase change material, a method for preparing the acrylonitrile-based copolymer solid-solid phase change material from the second monomer, and a method for preparing an energy-storage and temperature-adjustment fiber / film from the phase change material prepared from the second monomer. The second monomer is prepared by the steps of enabling polyoxyethylene alkyl ether to react with sodium in methylbenzene, then enabling the reactant to react with an allyl monomer containing acyl chloride groups to obtain a crude product, and washing and carrying out liquid separation on the crude product. The acrylonitrile-based copolymer solid-solid phase change material prepared from the second monomer has the melting point being lower than the decomposition temperature and is applicable to melt spinning. The fiber / film with favorable energy-storage and temperature-adjustment performances can be prepared by mixing the acrylonitrile-based copolymer solid-solid phase change material with a thermal stabilizer and then spinning and filming under molten conditions.

The invention discloses a thermoplastic cellulose-based solid-solid phase transition material and a preparation method thereof. The preparation method comprises the following steps: 1, drying cellulose or a cellulose derivative; 2, respectively dissolving a cross-linking agent and polyethylene glycol alkyl ether in an organic solvent I to obtain a cross-linking agent solution and a polyethylene glycol alkyl ether solution, adding the polyethylene glycol alkyl ether to the cross-linking agent solution in a dropwise manner, adding a catalyst, and reacting for 0.5-10h to obtain a prepolymer solution, wherein a mole ratio of the polyethylene glycol alkyl ether to the cross-linking agent is 1:1; and 3, dissolving cellulose in an ionic liquid to obtain a cellulose solution, adding the prepolymer solution, acid anhydride and a catalyst to the above obtained cellulose solution, carrying out a polymerization reaction for 2-24h to obtain a finally obtained mixture, adding the finally obtained mixture to deionized water or an organic solvent II for precipitation, repeatedly washing the above obtained precipitate with deionized water 2-3 times, and carrying out vacuum drying to obtain the thermoplastic cellulose-based solid-solid phase transition material. The phase transition material has a good thermal stability and a melting processing performance, and can be blended with a thermoplastic copolymer matrix for melting processing.

The invention discloses a high-temperature-resistant and anti-oxidation alloy copper foil plating solution and its application. The plating solution is composed of the following raw materials: stannous sulfate, zinc sulfate, auxiliary additives, brighteners and water; the auxiliary additives are At least two of citric acid, tartaric acid, sodium gluconate, ammonium sulfate, triethanolamine, polyethylene glycol alkyl ether and vanillin; the brightener is peptone and / or gelatin; Application in the preparation of high temperature resistant and oxidation resistant alloy copper foil. The copper foil coating produced by the invention is dense, smooth and bright; the copper foil has high thermodynamic stability, and the zinc-tin alloy coating also has good high-temperature corrosion resistance, and can be used in the manufacture of high-precision printed circuit boards.

The present invention provides a method of enriching a lipopeptide in a microbial cell culture, the method comprising mixing an amphiphilic sulfonate and / or an amphiphilic sulfate with the cell culture to induce the formation of aggregates containing the lipopeptide, centrifuging the cell culture to generate a supernatant fraction and a pellet fraction, separating the pellet fraction from the supernatant fraction, and mixing the pellet fraction with a polyoxyethylene glycol alkyl ether to release the lipopeptide from the aggregates. Also provided is a method of purifying an exopolysaccharide from a microbial cell culture, the method comprising mixing an amphiphilic sulfonate and / or an amphiphilic sulfate with the cell culture to induce the formation of aggregates, centrifuging the cell culture to generate a supernatant fraction and a pellet fraction, separating the supernatant fraction from the pellet fraction, adding alcohol to the supernatant fraction to precipitate the exopolysaccharide; and removing the precipitated exopolysaccharide from the supernatant fraction.

A bondable blood-friendly polymer is a terpolymer or a quadripolymer at least formed by polyethylene glycol alkyl ether acrylate or polyethylene glycol alkyl ether methacrylate (I), and zwitterionic acrylic ester or zwitterionic methacrylic ester (II), and acrylic acid or a methacrylate derivative with an epoxypropyl group, an isocyanate group, a trialkoxy silane, a hydroxyalkyl group, a propargyl group or a quaternary ammonium group (III). In the present invention, the blood-friendly polymer with a potentially-bondable group has the following advantages: although the water insolubility thereof is implemented by using the hydrophobicity physical effect of an existing higher alkyl acrylate linkage, the blood friendliness of a coating is reduced due to the existence of a great number of hydrophobic chain links in the polymer; and a physical coating is slowly desolventized from the surface to be ablated in the application process of the physical coating. A disclosed bondable blood-friendly polymer coating not only can overcome these defects, but also can improve the blending property thereof. Disclosed are composition, a structure and a preparation method of the bondable blood-friendly polymer.