1199 results about "Thiocyanic acid" patented technology

Advantageous aqueous mixed salt systems viscosified with water-soluble or water-dispersable polymers which are superior to corresponding single salt systems of similar densities are provided. The mixed salt systems comprise water; a water-soluble or water-dispersable polymer capable of viscosifying an aqueous medium; one or more cations including a member selected from the group consisting of lithium, sodium, potassium, cesium, magnesium, calcium, zinc, or mixtures thereof; and one or more anions including a member selected from the group consisting of chloride, bromide, iodide, formate, nitrate, acetate, cyanate, thiocyanate, a zinc complex anion or mixtures thereof; there being present either at least two cations or at least two anions. Inventive viscosified mixed salt systems display-under such stressing factors as aging, heat, mechanical agitation, and shear-greater stability compared to the single salt systems of similar densities. Also provided are methods for making viscosified mixed salt systems and methods for advantageously using the same as drilling, drill-in, completion, hydraulic fracturing, work-over, packer, well treating, testing, spacer, or hole abandonment fluids.

The present invention relates to a method capable of using natural and artificial synthetic isosulfocyanate compound or its derivative to prevent and cure prostatic diseases and skin carcinoma. The internal tests show that various isosulfocyanate compounds or their derivatives can induce prostatic cell II phase drug metabolic detoxication enzyme-glutathione transferase so as to can inhibit the hyperplasia of prostate and inflammation, and can prevent and cure prostatic carcinoma and skin carcinoma.

The invention relates to metal oxide semiconductor 2 (MoS2), in particular to a graphene/MoS2 nano self-lubricating composite material and a preparation method thereof. The composite material is prepared through the following steps that: graphene oxide nanosheets are placed into mixed solution which is formed by molybdate, sodium thiocyanate, sodium chloride and deionized water to obtain mixed solution 1, the pH value of the mixed solution 1 is adjusted through hydrogen chloride (HCl) and sodium hydroxide (NaOH) to 1 to 6, the mixed solution 1 is transferred to a hydrothermal reactor which is lined with polytetrafluoroethylene after being ultrasonically treated and uniformly mixed, the mixed solution 1 has hydrothermal reaction under 180 to 200 DEG C after the reactor is well sealed, products are centrifuged and collected after 24 to 48 hours, the products are washed by the deionized water and the absolute ethyl alcohol, and the dried products are heat treated for 2 hours under 800 to 900 DEG C under the protection of the nitrogen (N2)/hydrogen (H2) atmosphere to obtain the graphene/MoS2 nano self-lubricating composite material.

The invention discloses a deplating liquid for a NiCuNi plating on the surface of sintered NdFeB and a deplating process thereof. The deplating liquid for the NiCuNi plating on the surface of sintered NdFeB adopts deionized water or clean tap water as the liquid solvent, and all components and component contents are as follows: 60-90g/L reserve salt S, 120-150ml/L ethylene diamine, 20-40g/L anti-corrosion complexing agent and 50-100ml/L mineral acid. The solute further comprises a surface active agent of 0.5-1g/L. The anti-corrosion complexing agent is sodium citrate or triammonium citrate; the mineral acid is nitric acid or ammonium nitrate; and the surface active agent is potassium thiocyanate, or sodium sulfocyanate or ammonium thiocyanate. The deplating process comprises the following steps: preparing a deplating bath; disposing a deplating liquid; executing the deplating; and removing the deplating liquid on a product. The deplating liquid has the advantages of stable property, good deplating effect and low cost; and the deplating operation is simple and convenient, pollution is prevented, body harm of operators is relieved, waste is changed into valuable and the benefits are remarkable.

At least one of the following compounds is applied as a re-wet solution to media: potassium iodide, sodium iodide, sodium thiosulfate, potassium thiosulfate, and sodium thiocyanate. The addition of at least one of these compounds to the re-wet solution can improve light fastness on the order of eight to thirteen times or more on porous glossy media. These additives are particularly effective with water-soluble dyes, including dyes such as Reactive Black 31 (Pacified) (RB31), Direct Blue 199 (DB199), Magenta 377 (M377), and Direct Yellow 132 (DY132).

Disclosed is a sustained-release preparation or capsule of isothiocyanate compounds or derivatives thereof, the sustained-release preparation containing (a) a therapeutically effective amount of isothiocyanate compounds or derivatives thereof; (b) a pharmaceutically acceptable carrier, and the capsule containing a capsule shell and a pharmaceutical composition consisting of components (a) and (b) inside the capsule shell. The sustained-release preparation is stable and has a good compatibility and sustained-release effect; the capsule significantly improves the stability of the drug, and masks the smell of the isothiocyanate compounds and reduces irritation.

The present invention discloses a microcapsule mustard essence which consists of wall materials and core materials; the wall materials are prepared by using the following components in parts by weight: starch sodium octenylsuccinate 5.0-25 parts, soybean protein isolate 1.0-5.0 parts, sodium caseinate 0.1-3.0 parts, maltodextrin 20-60 parts and thickening agents 0.2-6.5 parts; and the core materials comprise the following raw materials in parts by weight: natural mustard oil 1.0-20 parts and/or allyl isothiocyanate 1.0-20 parts, and fragrance enhancing and coordinating agents 0.4-1.5 parts. The microcapsule mustard essences have high embedding rate and good heat resistance, can improve the stability of the mustard oil, overcome the shortcomings of highly volatility and strong irritation of liquid essences used in the past, and not easily being preserved in products, and better exert the fragrance of the mustard oil; and at the same time, the wall materials of the microcapsule mustard essences are widely accessible, have low production cost, and can be widely promoted and applied.

The invention relates to a preparation method of a fluorescent molecular probe for detecting fluoride ions in aqueous solutions through fluorescence enhancement and an application of the fluorescent molecular probe to detecting fluoride ions. The fluorescent molecular probe is prepared by protecting 1,4-diethyl-1,2,3,4-tetrahydro-7-hydroxyquinoxaline-6-aldehyde taken as a raw material with silane and then condensing the raw material and malononitrile. The fluorescent molecular probe is simple and convenient to synthesize, and reaction conditions are mild. The fluorescent molecular probe has the specific characteristics that the probe molecule has stable optical properties and higher synthetic yield; the probe molecule has high sensitivity of detection of fluoride ions in the aqueous solutions and low lower limit of detection, and the limit of detection is 5.4mu M; the response range is 0-1mM and the detection range is wide; the probe molecule has good selectivity and has no responses to anions, such as chloride ions, bromide ions, iodide ions, tetrabutylammonium cyanide, nitrates radicals, hydrosulfate radicals, perchlorate radicals, acetate radicals, thiocyanate radicals, azide radicals, cysteine, bovine serum albumin, carbonate radicals, sulfate radicals and reduced glutathione; the fluorescent molecular probe has practical application values in the fields of biochemistry, environmental sciences and the like.

The invention relates to sizing material used for the acrylic acid ester rubber with high performance requirement. The acrylic acid ester rubber of active chlorine introduced from epoxy gene is chosen, and trimerization thiocyanic acid TCY is adopted as a vulcanizing system; the invention comprises concrete ingredients as follows: 100 parts of AR5160, 60-90 parts of carbon black N330, 1.0-2.0 parts of stearic acid, 8-14 parts of plasticizer, 2.0-2.5 parts of WB-212, 0.1-0.3 part of anti-scorching agent E/C, 2.0-3.0 parts of antioxidant, 1.0-1.5 parts of curing agent TYC, and 1.5-2.5 parts of accelerator BZ; glass with Mooney viscosity of ML1+4 50 is adopted to be vulcanized and transformed into -25 DEG C acrylic acid ester rubber for matching, so as to ensure that the brittleness intensity reaches above -45 DEG C. The sizing material of the acrylic acid ester rubber with high performance requirement is obtained. The sizing material has the advantages that the comprehensive physical property is good, and simultaneously the brittleness temperature is lower. The invention meets the requirement of the vehicle industry to the sealing material, and the technical level achieves the domestic advanced level. The invention is suitable for the ranges of vehicle engine, crank oil seal, gear shifting box oil seal, and heat resistant, oil proof and cold resistant rubber hose, and protecting sleeve, etc.

The invention provides a clenbuterol (CLB) magnetic particle separation enzyme-linked immunosorbent assay (ELISA) method, belonging to the technical field of food safety immunodetection. The method comprises the following steps: the immunodetection principle of the competition method is adopted to connect CLB with bio-enzyme and prepare an enzyme labeled antigen reagent, antibody against fluorescein isothiocyanate (FITC) is absorbed on the surface of magnetic particles to prepare a magnetic separation reagent, FITC is connected with the antibody against CLB to prepare an antibody reagent; CLB in a sample and enzyme-labeled CLB compete to combine with a small quantity of FITC-labeled antibody against CLB and form an antigen-antibody composite; after the magnetic separation reagent is added, the antibody against FITC connected with the surface of magnetic particles captures the composite on the surface of magnetic particles; and washing, and finally adding substrate to detect. The invention has the following advantages: (1) magnetic particles replace the traditional ELISA plate to be used as solid carrier and ensure that the immunoreaction is performed more fully and fast under the near-liquidus condition; compared with the traditional ELISA method, the method is characterized by high specificity and good repeatability; and (2) the one-step competition method principle is adopted, thus the detection time is short.

The invention discloses a comprehensive treatment method of a high-concentration cyanogens-containing and thiocyanate-containing waste liquid. The method comprises the following steps of: (1) regulating the pH value of a decarbolizing waste liquid to be between 5 and 10; (2) adding the decarbolizing waste liquid and oxydol accounting for 40-50 percent of the total weight of the oxydol to be added into a reactor in the reactor at the same time, raising the temperature to react for 0.5-1h at 150-180 DEG C, continuously adding the remained oxydol accounting for 60-50 percent of the total weight of the oxydol into the reactor between 0.5h and 1.5h to fully react under stirring, wherein the molar ratio of [H202]:[SCN-] added in the reactor is 2.5-4; and (3) cooling materials to the room temperature and discharging. In the method, CN- and SCN- are treated in one operation unit at the same time, and the synergy of two methods of oxydol oxidation and high-temperature hydrolysis is utilized, thereby the usage of Fe salt catalyst is saved, and the reaction temperature in the high-temperature hydrolysis step is lowered at the same time.

The invention provides a method for treating ammonia desulfurization waste liquid by an oxidation method, and belongs to the technical field of desulfurization waste liquid treatment. According to the method, oxidation reaction is conducted by blowing air or oxygen into the ammonia desulfurization waste liquid; ammonium thiosulfate in the desulfurization waste liquid is oxidized into ammonium sulfate in the oxidation reaction process; ammonium thiocyanate is not oxidized, but continues to be reserved in the desulfurization waste liquid; and then ammonium thiocyanate is extracted through evaporation and secondary crystallization. The method is suitable for treating desulfurization waste liquid generated in a gas desulfurization and decyanation technological process by a catalytic oxidation method, and suitable for waste liquid treatment in the desulfurization technology field of hydrogen sulfide such as coke oven gas, natural gas, coalbed methane and refinery gas. With the adoption of the method, ammonium thiosulfate salt in the waste liquid can be converted to ammonium sulfate salt, ammonium thiocyanate salt can be protected, and ammonium sulfate salt and ammonium thiocyanate salt can be separated and purified from the waste liquid into a product.

The invention discloses a preparation method of neopentyl glycol dimethacrylate. The preparation method comprises the following steps: reacting methyl methacrylate and neopentyl glycol used as raw materials by adopting a reaction rectification ester exchange technology in the presence of a catalyst and a polymerization inhibitor so as to obtain a reaction product containing neopentyl glycol dimethacrylate; distilling the reaction product under the condition of reduced pressure to remove excess methyl methacrylate, and then remove the catalyst and the polymerization inhibitor, thus obtaining the neopentyl glycol dimethacrylate product. The preparation method has the advantages that the carbonate and thiocyanate compound catalyst is adopted, can be recycled and has a good catalytic effect, the reaction time is shortened, the reaction efficiency is improved, and the production amount of polymers is reduced; the nitroxide free radical polymerization inhibitor is adopted, the using amount of the polymerization inhibitor is reduced, and the polymerization inhibition effect is improved.