553results about How to "Use low concentration" patented technology

The invention belongs to the environmental protection field, concretely relating to a green environmental-protection composite corrosion inhibition antifouling agent for water circulating cooling, compounded of antifouling dispersants and corrosion inhibitors: polyepoxy sodium succinate, polymerized sodium aspartate, hydrolyzed polymaleic anhydride, sodium gluconate, zinc salt, in the mass ratio of 1-6 to 1-4 to 2-6 to 1-2 to 1-2. And it has characters of no phosphorus and biodegradability, an environment-friendly water quality stabilizer, used in a water-circulating cooling system to play the role in corrosion inhibition and antifouling.

The invention relates to the field of biological medicines and in particular to cocktail type cryoprotectant and application thereof. The cocktail type cryoprotectant comprises the following components: 1-60% (w / v) of a polysaccharide, 1-50% (w / v) of an amino acid, 1-20% (w / v) of a polyhydric alcohol and 0-10% (w / v) of a hydroxyl-containing macromoleclar polymer. The polysaccharide, the amino acid, the polyhydric alcohol and the hydroxyl-containing macromoleclar polymer of the cryoprotectant are relatively low in toxicity with high concentrations, formation of intracellular ice crystals can beeffectively inhibited with the polysaccharide, the amino acid, the polyhydric alcohol and the hydroxyl-containing macromoleclar polymer of the proportions, cryopreserved cells can be alleviated fromdamage caused by low temperature environments, the survival rates of the cryopreserved cells after anabiosis culture can be increased, the toxicity of the cryopreserved cells can be greatly reduced, and thus the cocktail type cryoprotectant provided by the invention has very high security feasibility and application and popularization values.

The invention discloses a method of preparing acellular matrixes by using phospholipase. The method of the invention is characterized in that stand-by organ tissue is first pre-treated and then added into solution containing the phospholipase to prepare the acellular matrixes under a controlled condition; the prepared acellular matrixes are then washed. By adopting the preparation method of the invention, the obtained acellular matrix can have good physical property and biological function. Therefore, the preparation method in the invention is not only a great breakthrough in the tissue engineering, but also opens a new way for clinical treatment of diseases. The preparation method of the invention has the advantages of reliable theory, simple and flexible process technique, good product reproducibility and is very easy to be industrialized.

The invention belongs to the fields of development and utilization of plant growth regulating substances, and discloses a hydrogen-rich liquid plant growth regulator. The saturation of hydrogen in a solvent is 0.1 to 100 percent, and the solvent is water, a 25 to 100 percent Hoagland nutrient solution, a Kimura B nutrient solution, a TAP nutrient solution or an MS culture solution. Calcium salt, salicylic acid, salicylate, salicylic acid derivative, humid acid or humic acid salt at the final concentration of 0-1,000mu mol / L is added into the solvent. Plants, plant tissues and seeds are irrigated, sprayed or soaked, the plant growth and morphogenesis can be effectively promoted, seed germination is quickened, heavy metal accumulation is reduced, and the oxidation resistance and stress resistance / tolerance are improved. The method has the characteristics of no pollution, environmental protection, low cost, and wide application range, and is applied to the fields such as farmland chemical regulation, provenance agriculture, environment and plant nutrition, plant tissue culture and cut flower preservation time prolonging.

The invention belongs to the circulating cooling water treatment technical field, and refers in detail to an environment-protecting composite pretreatment filming agent used for the pre-treatment filming in a circulating cooling water system and a use method thereof. The environment-protecting composite pretreatment filming agent comprises the main components of 2-phosphonobutane- 1, 2, 4-tricarboxylic acid and sodium of polyepoxysuecinic acid as well as a proper amount of carboxylic acid copolymer, benzotriazole, sodium molybdate, zinc sulphate and so on. When used, the composite pre-treatment filming agent is added into the circulating cooling water directly, and a corrosion-resistant protecting film is formed after 48 years of operation, the corrosion resistance of which to the standard copper sulphate drip solution is far better than the traditional phosphor-zinc pretreatment filming agent. The total phosphor content of the environment-protecting composite pretreatment filming agent is less than 7.5mg / l, and the water pH value does not have to be adjusted. After the pretreatment filming, the water is clear and transparent, and the normal operation can be started without replacing the water. Thus, not only the water to be replaced is saved, but also the chemical base investment expense during the normal operation after the water replacement is reduced. Meanwhile, no waste liquor of pretreatment filming is discharged, so the invention belongs to the environment-friendly pretreatment filming method.

The invention discloses a macromolecule material cold keeping agent making method which consists of, preparing aqueous solution of polymers having strong hydrophilic radicals in the molecular structure, charging propenoic acid, hydroxyethyl methacrylate and maleic anhydride monomer, mixing homogeneously, charging bis-ethyl acrylate cross linking agent, agitating homogeneously, charging potassium peroxodisulfate initiating agent, mixing homogeneously, obtaining macromolecular material, dissolving into water of different mass.

The invention discloses a lubricating agent for superfine copper wire drawing. The lubricating agent comprises the following components in parts by mass: 5-25 parts of lubrication base oil, 10-30 parts of an emulsifying agent, 1-5 parts of a surface active agent, 1-10 parts of an antirust agent, 1-5 parts of an extreme pressure antiwear additive, 1-5 parts of a thickening agent, 5-25 parts of an alkali retention agent, 1-5 parts of a bactericide, 0.1 part of a defoaming agent and 30-50 parts of water. The lubricating agent for superfine copper wire drawing has good oxidation resisting, cooling, cleaning, lubricating, rust preventing, hard water resisting and copper soap dispersing properties, and is particularly suitable for superfine copper wire drawing.

The invention discloses a bacteria removing solution and a preparation method thereof. The bacteria removing solution comprises the following components in percent by weight: 1.0-2.0% of carboxymethyl chitosan, 2.0- 4.0% of algal polysaccharides, 6.0-8.0% of cecropin, 1.5-3.5% of N-acetyl murein glycan hydrolytic enzyme, and 82.5-89.5% of water. When the bacteria removing solution is applied to staphylococcus aureus, escherichia coli and candida albicans for 2 min, the average kill ratio is higher than 99.9%, and while the bacteria removing solution is applied to staphylococcus aureus, escherichia coli and candida albicans for 5 min, the average kill ratio is 100%. The bacteria removing solution has the advantages of low use concentration and good sterilizing effect.

The invention belongs to the technical field of oilfield flooding treatment, and particularly relates to a composite multiple dirt dispersion agent for oilfield flooding treatment and a preparation method thereof. The composite multiple dirt dispersion agent is composed of polyepoxysuccinic acid sodium, polyaspartic acid sodium, polymaleic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, hexamethylenediamine tetra(methylene phosphonic acid) hexapotassium salt and polyamidoamine using hexamethylene diamine as the core. The composite multiple dirt dispersion agent has the characteristics of less consumption and wide range of application, can effectively prevent deposition of calcium carbonate, calcium sulfate, barium sulfate and silicate of an oilfield flooding system, and is applicable to the oilfield flooding system under conditions of high temperature, hypersalinity and high alkalinity as well as the oilfield flooding system under the conditions of high temperature, hypersalinity and high acidity.

The invention discloses preparation methods of an antioxidant, a water-retaining agent, a mixture and a modified fuel cell membrane electrode. The invention discloses a preparation method of the modified fuel cell membrane electrode, which comprises the following steps: a) preparing an antioxidant, or a water-retaining agent, or a mixture with antioxidant and water-retaining functions, and preserving the mixed solution for later use; b) coating two sides of a microporous reinforced membrane with the mixed solution obtained in the step a) by using a coating device, and drying the membrane to obtain a modified perfluorosulfonic acid proton exchange membrane; c) processing the modified PEM membrane to prepare the fuel cell membrane electrode. The invention further discloses a formula and a preparation method of the antioxidant, a formula and a preparation method of the water-retaining agent, a formula and a preparation method of the mixture with antioxidant and water-retaining functions, and applications of all the products hereinabove in the fields of membrane electrodes and fuel cells. According to the invention, the chemical structure degradation phenomenon of the proton exchange membrane caused by free radicals is effectively relieved, the lasting water retention performance of the proton exchange membrane is improved, the proton conductivity is improved, and the mechanical property of the membrane electrode is improved by adopting the enhanced microporous membrane, so that the stability of the membrane electrode is enhanced, and the service life of the membrane electrode is prolonged.

The invention discloses a special biological disinfectant for toothbrush and a preparation method thereof. The disinfectant is characterized by comprising the following components by weight: 1.0-2.0% of carboxymethyl chitosan, 2.0-4.0% of seaweed polysaccharide, 6.0-8.0% of bactericidal peptide, 1.5-3.5% of mucopeptide-N-acetylmuramoylhydrolase, a proper amount of essence and the balance of purified water. The special biological disinfectant for toothbrush provided by the invention has the advantages of wide bactericidal spectrum, good stability, no toxicity, no stimulation, no corrosion, no irritability, no color, no odor and no side effect, can kill parasitic pathogenic bacteria on the toothbrush, and causes no corrosion to the toothbrush.