33 results about "Stabilizing Agents" patented technology

The invention provides an organic and inorganic composite aluminium alloy non-chromium passivation treatment fluid, pertains to the field of metal materials, relates to a problem of treatment of metal material surface, and in particular to a passivation treatment fluid which can improve the corrosion resistance of the aluminium alloy surface and does not contain hexavalent chromium. The passivation treatment fluid is characterized in that organic resin such as waterborne acrylic resin, polyurethane or the like is adopted as a film forming agent, and a ferrate inorganic passivating agent, a stabilizing agent and a curing agent are added to prepare an organic and inorganic composite passivation solution; the concentration weight percentages of the components in the passivation solution are as follows: 10 to 25 percent of organic resin film forming agent of waterborne acrylic resin or polyurethane, 0.01 to 2 percent of ferrate inorganic passivating agent, 0.05 to 5 percent of sodium silicate passivation solution stabilizing agent, and 0 to 5 percent of curing agent; phosphoric acid is used for adjusting the pH value to 4-6; and the balance is deionized water. The method of roll coating, dip coating or the like is adopted for evenly coating the passivation solution on the surface of the aluminium alloy, then non-chromium passivation film with good corrosion resistance is obtained after curing at the temperature above 80 DEG C, and the passivation solution meets the requirement of environment protection.

Hydrofluoroolefins and hydrochlorofluoroolefins contaminated with acid and/or iron compounds are purified and stabilized by contacting the haloolefin with a solid adsorbent such as alumina and then combining the purified haloolefin with one or more stabilizers such as an epoxide. The purified, stabilized haloolefins thus obtained are useful in a wide variety of end-use applications, including, for example, as refrigerants, propellants, foaming agents, fire suppression or extinguishing agents, and solvents.

The invention relates to polyurethane foam forming compositions which produce hydrophilicized polyurethane foams, in particular foams which are suitable as wound dressing foams. These compositions comprise (I) a polyurethane dispersion and (II) specific additives including one or more alkylpolyglycoside. The process of producing these foams comprises frothing and drying these polyurethane foam forming compositions.

The present invention relates to a new process of synthesizing conductive polymers from monomers substituted with amine group. The process provides simple synthesizing steps for the conductive polymers without using other additives such as stabilizers or emulsifiers. The conductive polymers synthesized according to the present invention have highly enhanced solubility in common organic solvents and electrical conductivity compared to conventional conductive polymers. Therefore, the conductive polymers synthesized according to the present process can be utilized in applications that require high electrical conductivity, for example an electromagnetic interference shield or a transparent electrode of thin film, as well as in specific applications such as various conductive films, fibers, polymer blends, battery electrodes or conductive etch mask layers.

An insect repellent composition containing citronella oil, D-limonene, 2 or more synergists, and 3 or more essential oils as the active ingredients. The preferred essential oils are geranium oil, rosemary oil and peppermint oil, but other essential oils may be used. In the preferred embodiment the synergists are aldehyde C-14 and aldehyde C-18. As desired, vanillin may be used as a stabilizer, and fragrances, fragrance enhancers and surfactants may be utilized.

The invention discloses an antibacterial and hydrolysis-resistant thermoplastic polyurethane elastomer and a preparation method of the polyurethane elastomer, and belongs to the field of high molecular materials. The polyurethane elastomer is prepared from the following raw materials by mass percentage: 40-70% of hydroxyl-terminated polyhydric alcohol, 20-40% of diisocyanate, 4-15% of micromolecular dihydric alcohol chain extender, 1-5% of hydrolysis stabilizer, 0.1-0.5% of antioxidant, 0.1-0.5% of light stabilizer, 0.1-0.5% of mildewproof agent, 0.5-1% of lubricant and 0.001-0.005% of catalyst. The mildewproof agent is added, so that the antibacterial property of the polyurethane elastomer is improved, and the service life of the polyurethane elastomer is prolonged; the hydrolysis stabilizer is added, so that the problem of degradation of the polyurethane elastomer in a hygrothermal environment is solved; and compared with current commonly used disc method and casting method technologies, a product synthetized by the polyurethane elastomer has the characteristics of stable extrusion, uniform molecular weight and few colloidal crystal point.

The invention discloses an activated carbon-supported ruthenium-based ammonia synthetic catalyst and a preparation method thereof. The preparation method comprises the steps of with potassium ruthenate K2RuO4 H2O as a metallic ruthenium precursor, liquid ammonia and acetic acid as a stabilizer of ruthenium impregnation liquid, alkaline metal and alkaline-earth salts or bases as aids, and activatedcarbon as a supporter, performing impregnating to obtain the activated carbon-supported ruthenium-based ammonia synthetic catalyst. The activated carbon-supported ruthenium-based ammonia synthetic catalyst prepared herein is free of chlorine ions; active ingredients and the aids are distributed evenly on the catalyst; the prepared catalyst has stable performance, high activity, and good safety ofuse and is suitable for industrial production and application.

The EAFD stabilizer for returned concrete and mixer drum wash water includes various methods of using EAFD as a stabilizer in making concrete. The potentially hazardous stockpile of EAFD can be used in practical construction, which has a positive impact on the environment. A certain amount of EAFD is added to cement being mixed or to wash water and acts as a stabilizer, the wash water being used to make a cement mixture. This resultant EAFD stabilized concrete mixture stabilizes overnight.

The invention discloses a high-molecular self-lubricating material and a preparation method of the high-molecular self-lubricating material. The high-molecular self-lubricating material is prepared from the following ingredients in parts by weight: 100 parts of polybutylene terephthalate resin, 5 to 30 parts of aramid fiber, 3 to 20 parts of wear-resistant agents, 5 to 12 parts of toughening agents, 0.1 to 2.0 parts of antioxidants and 0.1 to 2.0 parts of stabilizing agents. The high-molecular self-lubricating material has the advantages that the mechanical property is excellent; the wear-resistant performance is excellent; the dimension stability is high. The invention also discloses a plate spring flanged bushing, which is made of the high-molecular self-lubricating material through injection molding. The plate spring flanged bushing has the advantages that the structure is simple; the weight is light; the maintenance is avoided; the abrasion resistance is realized.

The invention discloses a preparation method for silicone-acrylic miniemulsion. The preparation method comprises the following steps: mixing acrylate monomers, organosilicone monomers and a stabilizer, stirring until complete dissolution, and obtaining an oil-phase mixture, wherein the organosilicone monomers include non-functional organosilicone monomers and functional organosilicone monomers, and the non-functional organosilicone monomers include methyltrimeth(eth)oxysilane, propyltrimeth(eth)oxysilane or phenyltrimeth(eth)oxysilane; dissolving an emulsifier and water, and stirring uniformly to obtain a water-phase mixture; adding the oil-phase mixture into the water-phase mixture, producing a hydrolysis-emulsification reaction, performing ultrasonic miniemulsification, and producing a miniemulsion polymerization reaction of a mixed solution in an oxygen-free condition at 50-70 DEG C to obtain the silicone-acrylic emulsion. The preparation method is used for performing miniemulsion polymerization on a monomer system consisting of the non-functional organosilicone monomers, the functional organosilicone monomers and the acrylate monomers, the prepared silicone-acrylic miniemulsion is relatively high in both silicon content and solid content, and the coagulation rate can be reduced to 0%.

The invention discloses an environment-friendly composite alkaline foam cleaning agent and a preparation method thereof. The environment-friendly composite alkaline foam cleaning agent is prepared from water, sodium hydroxide, a foaming agent, a foam stabilizing agent, a dispersing agent, a chelating agent and alkylolamide. The foam cleaning agent has the advantages of being high in permeability,efficient, clean, easy to flush and the like, can form a large amount of rich and delicate foam in the use process, has long half-life and wall hanging time, can be attached to the surface of equipment for 25 min or longer, can rapidly infiltrate dirt to soften, loosen and emulsify the dirt, reduces adhesion of the dirt, can completely remove the dirt of the equipment and has lower cost.

The invention provides an aluminum profile chromate-free passivation agent. The chromate-free passivation treatment agent includes, by weight percent, one or more of hexafluorozirconic acid, hexafluorotitanic acid, zirconium tetrafluoride, potassium fluozirconate and fluosilicic acid, water soluble phenolic resin, carboxymethyl cellulose, a silane coupling agent, sodium nitrate, an alkaline adjusting agent, a rare earth additive, an auxiliary and deionized water. The auxiliary is one or more of a stabilizing agent, a pH adjusting agent, a thickening agent, a leveling agent, a coalescing agent, a wetting agent and an antioxidant. The metal surface treatment agent is used for treating a metal product, the antirust performance of the product can be obviously improved, especially, the surfaces of aluminum and aluminum alloy products can be treated.

The invention relates to the technical field of modified emulsified asphalt for road engineering, and particularly relates to modified emulsified asphalt for a superthin wearing course. The emulsified asphalt is prepared from the following components in percentage by weight: 45.0-68.0 percent of asphalt, 3.0-4.0 percent of an emulsifying agent, 0.25-0.45 percent of a cationic quick breaking emulsifying agent, 0.5-2.0 percent of a stabilizing agent, 1-5 percent of auxiliary and the balance of water. By adopting the scheme, the modified emulsified asphalt for a superthin wearing course is prepared, has a solid content of more than 67 percent, is quick in emulsion breaking speed, is capable of generating a relatively thick asphalt film after emulsion breaking, and has excellent adhesive performance and waterproofing performance, wherein the dynamic viscosity at 60 DEG C of evaporated residues of the emulsified asphalt is more than or equal to 1800Pa.s.

The invention relates to a production method for preparing polyvinyl chloride fibers for hair by a melting method, which belongs to the production field of polyvinyl chloride fibers. The production method is realized through the following steps: (1) mixing PVC resins, a plasticizer, a stabilizing agent, a lubricant, an antioxygen agent, and organic montmorillonite according to a certain proportion; (2) performing melting and spinning by a screw extruder; (3) stretching fibers spun in the step (2), processing the stretched fibers by an extraction agent, further stretching the processed fibers so as to obtain dimensionally stable PVC fibers for hair; (4) recycling the plasticizer separated by distilling residual treating liquids, and the extraction agent with a low boiling point. The residual volume of the plasticizer in the PVC fibers prepared by the production method disclosed by the invention is small, the migration of small molecules during the use of products is effectively avoided, and the contractility of the fibers is greatly lowed, so that the lustrousness of the fibers is more similar to that of human hair. The technological method is simple, the cost is saved, and continuous high-efficiency production can be realized.

The invention provides a preparation method of organic tin-free vinyl chloride-isobutyl vinyl ether copolymer resin (chlorine ether resin for short). The preparation method comprises the steps of adding the materials including deionized water, an emulsifying agent, a buffer agent and the like into polymerizing kettle, heating to a specified temperature, adding an emulsified mixture of the materials including vinyl chloride, isobutyl vinyl ether, deionized water, an emulsifying agent, a buffer agent, stabilizers and the like and materials including an initiator and the like in a batch or continuous manner to generate polymerization, and adding the stabilizers in the later period of the reaction, so as to obtain the organic tin-free chlorine ether resin, wherein the stabilizers are substances containing non-organic tin stabilizers with epoxy groups. The prepared organic tin-free chlorine ether resin has good thermal stability and can be applied to the fields of ink, coatings and the like of tools, foods and medical products. The preparation method has the advantages that the chlorine ether resin does not contain organic tin and has good thermal stability.

The invention discloses a kit for detecting the content of a KAPPA light chain.The kit comprises a reagent R1, a reagent R2 and a KAPPA light chain calibration material, wherein the reagent R1 comprises a first buffer solution, a first electrolyte, a surface active agent, a first stabilizer, a macromolecule accelerant and a first preservative, the reagent R2 comprises a second buffer solution, an anti-human KAPPA light chain antibody, a second electrolyte, a second stabilizer and a second preservative, and the C1 inhibitor calibration material comprises a third buffer solution, a third stabilizer, a third preservative, an antioxidant and a KAPPA light chain antigen.The invention further discloses the application of the kit for detecting the content of the KAPPA light chain and a method for detecting the content of the KAPPA light chain using the kit.By the adoption of the kit and the detection method, the content of the KAPPA light chain can be detected easily and quickly.

Provided is a composition by which glycated hemoglobin can be measured even in the presence of a stronger surfactant than a conventional case. Also provided is a buffer and/or stabilizer which maintains the residual activity of an amadoriase or lowers a reduction of residual activity. The present invention provides a composition for use in measuring glycated hemoglobin containing an amadoriase having substitution of one or more amino acid residues at a position(s) corresponding to an amino acid(s) selected from the group consisting of position 262, position 257, position 249, position 253, position 337, position 340, position 232, position 129, position 132, position 133, position 44, position 256, position 231 and position 81 of an amadoriase derived from the genus Coniochaeta and represented by SEQ ID No: 1 or 3, and having residual activity even in the presence of a surfactant. The present invention also provides a composition and kit for use in measuring glycated hemoglobin, comprising a specific stabilizer and/or a buffer. The present invention can provide an enzyme and a composition for use in measuring glycated hemoglobin, excellent in storage stability even if they are exposed to a surfactant.

The invention discloses an environment-friendly high-flame-retardance foaming material for automobile instrument trim and a preparing method of the environment-friendly high-flame-retardance foaming material. The environment-friendly high-flame-retardance foaming material is prepared from isocyanate and a component material in the mass ratio of 1:1.7. The component material is specifically prepared from, by mass, 48-55 parts of polyether 4110, 25-28 parts of polyether 3450, 40-45 parts of polyether 1300, 4-5 parts of a stabilizing agent AK8803, 0.9-1.3 parts of a catalyst HP11, 3.0-4.2 parts of water and 38-45 parts of a fire retardant TCPP. After the material and the method are adopted, the prepared foam material is high in high-flame-retardance property and not prone to combustion when meeting fire, and thus the fireproof safety and personnel safety of a whole automobile are ensured; besides, due to the fact that environment-friendly raw materials serve as raw materials used for the foaming material, no toxic and harmful substance to the human body is released, and thus the requirement for environment friendliness is met.

The invention discloses a high-temperature-resisting and high-strength lamp cover material composition. The composition is prepared from the following components in parts by mass: 60 to 80 parts of polycarbonate, 4 to 9 parts of polypropylene, 15 to 20 parts of polymethyl methacrylate, 2 to 5 parts of flame retardant, 0.4 to 0.8 part of antioxidant, 0.1 to 0.5 part of stabilizing agent, 1 to 3 parts of compatilizer and 0.2 to 0.5 part of lubricant. According to the high-temperature-resisting and high-strength lamp cover material composition disclosed by the invention, the material is used as alamp cover and has very high light transmittance; the material has high strength and is not easy to break so that the service life of a lamp is greatly prolonged; meanwhile, the potential safety hazards are also reduced; especially, the material has high temperature resistance and can be applied to lamps which are illuminated by heating, and the material is not fused or ignited.

The invention relates to waterborne fireproof paint and a preparation method thereof. The waterborne fireproof paint is prepared from the following ingredients including 250HBR, TEGO 500, OROTAN 1124,BYK 022, 25-percent ammonium hydroxide, titanium dioxide, ammonium polyphosphate, tripolycyanamide, pentaerythritol, chlorcosane, modified vinyl acetate copolymer emulsion, optical stabilizing agentsBASF 1130 and de-ionized water. According to the preparation method, all ingredients are added into the de-ionized water; a mixture M with the fineness being smaller than 60mu m is obtained; then, the modified vinyl acetate copolymer emulsion and the foaming agents BYK 022 are added; finally, the optical stabilizing agents BASF 1130 are added; a finished product is obtained. The waterborne fireproof paint has the advantages that the fire-resistant time is long; the fire-resistant limit is as long as 180min; the impact resistance can reach 55kg.cm; the toughness is 2mm; the water resistance reaches 255h; the adhesion force is 1 grade. The production cost is reduced; the environment resources are saved.

The invention relates to the technical field of PVC modified materials, and particularly relates to a mildew-proofing and antibacterial PVC modified material used for placemats and a preparation method of same. The mildew-proofing and antibacterial PVC modified material includes, by weight, 80-120 parts of PVC resin, 38-54 parts of an odor-free plasticizer, 5-10 parts of light calcium carbonate, 2-4 parts of a thermal stabilizing agent, 0.8-1.6 parts of a mildew-proofing and antibacterial agent, 0.6-1.0 part of an anti-discoloring agent, 0.3-0.7 parts of an antistatic agent, and 0.3-0.7 parts of a lubricant. The PVC modified material has good mildew-proofing and antibacterial effects, and is good in antistatic and anti-discoloring effects, is environment-friendly, has excellent temperature and weather resistance, is high in strength, is excellent in anti-impact performance, and has good flame retarding effect, good processability and excellent comprehensive performances.

The invention discloses a stabilizing agent for repairing heavy metal chromium pollution, and a preparation method and an application thereof. The stabilizing agent structurally comprises a reductioninner core and a degradable biological outer film coating outside the reduction inner core, the reduction inner core comprises calcium polysulfide, reduced iron powder and wheat bran, and the degradable biological outer film comprises modified polyvinyl alcohol. The preparation method of the stabilizing agent comprises the steps of preparing the inner core and covering with the degradable biological outer film to form the film. The stabilizing effect of the stabilizing particle on chromium-contaminated soil is good, and the stabilizing rate reaches up to 99% or above; the outer film covering the stabilizing agent has good biodegradability, so segmented and slow-release release of the agent can be achieved, the long-acting stability of the agent is improved to a large extent, and the stabilizing agent can be widely applied to soil heavy metal pollution remediation and contaminated site groundwater remediation engineering after being prepared on a large scale and has a certain promotionvalue.

The invention discloses a bag type PVC/silicon dioxide battery separator and a preparation method thereof. The bag type PVC/silicon dioxide battery separator is prepared from the following raw materials in percentage by mass: 15-55% of PVC, 5-25% of silicon dioxide, 10-40% of a plasticizer, 5-10% of a stabilizer and 20-35% of a solvent. The invention also discloses a preparation method of the bagtype PVC/silicon dioxide battery separator. The bag type PVC/silicon dioxide battery separator disclosed by the invention not only has performances superior to those of an imported separator, but alsohas excellent flexibility, can be also processed into various base shapes, can improve the service performances of a gel battery and an on-off battery and prolong the service lives thereof effectively, and meets the demand in current separator market.

The invention discloses a stabilizer for a PCB and a preparation method of the stabilizer. According to the invention, calcium-zinc salt is used as a matrix of the stabilizer, and soybean oil, activecalcium, an antioxidant, Q40 and YL-100 are added to modify the matrix, so the demolding and smoothness of the stabilizer matrix are improved; meanwhile, in order to improve the performance uniformityand stability of the prepared stabilizer, an adhesive and modified calcium-zinc stabilizer are added; on one hand, smooth demolding of the PCB matrix in the preparation process is achieved through the proportioning of all the components, and on the other hand, the stability of the stabilizer is improved through coordination and cooperation of the components. In the preparation process, conventional wet grinding is firstly adopted for preparation; but different from the prior art, after liquid is completely evaporated, constant-temperature standing is adopted for aging treatment on the stabilizer, and the aging treatment is mainly used for improving the mechanical properties of the stabilizer, so when the stabilizer is used, the mechanical properties of the matrix is improved.

The invention discloses zero-lactose modified milk browned by Maillard reaction and a preparation method thereof. The zero-lactose modified milk is prepared from the following raw materials: raw milk, lactase, xylitol and a compound stabilizer. According to the invention, lactose in the raw milk is fully utilized and is subjected to enzymolysis to obtain reduced monosaccharide; and the reduced monosaccharide is browned through the Maillard reaction to obtain the zero-lactose modified milk, so that the content of hazardous substances in the browning process is reduced, the content of total sugar and lactose in the modified milk is reduced, the intake of milk products by patients with lactose intolerance is facilitated, and the nutritional value and the taste of the product are improved. The invention is suitable for preparing the zero-lactose modified milk.