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1007 results about "Polyaspartic acid" patented technology

Polyaspartic acid (PASA) is a biodegradable, water-soluble polymerized amino acid. It is a biodegradable replacement for water softeners and related applications. In nature, PASA has been found in as fragments of larger proteins with length up to 50 amino acids, but as of 2004 had not been isolated as a pure homo polymeric material from any natural source. The first isolation of synthetic oligomeric sodium polyaspartate, obtained by thermal polycondensation of aspartic acid, was reported by Hugo Schiff in late 19th century. Later it was proposed that thermal polymerization process leads through polysuccinimide intermediate. Polyaspartic acid is produced industrially in both the acid form and as the sodium polyaspartate salt.

Selenium and ferrum-enriched organic inorganic fertilizer and application method thereof

The invention relates to a formula of a fertilizer, and a using method for the fertilizer. A selenium and ferrum-enriched organic inorganic fertilizer used for producing selenium and ferrum-enriched rice is prepared by mixing selenite, ferrite, a nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer, a decomposed organic fertilizer and a silicon fertilizer in a ratio, and granulating. The selenium and ferrum-enriched organic inorganic fertilizer is prepared from the following components in part by weight: 0.004 to 0.010 part of selenite, 1 to 5 parts of ferrite, 15 to 33 parts of nitrogen fertilizer, 12 to 24 parts of phosphate fertilizer, 10 to 17 parts of potash fertilizer, 0.02 to 0.08 part of sodium of polyaspartic acid or salt thereof, 30 to 50 parts of decomposed organic fertilizer and 5 to 8 parts of silicon fertilizer. The fertilizer contains selenium and ferrum, also contains other nutritional fortification substances required by growth of crops, can simultaneously provide selenium, ferrum and nutritional fortification substances required by the growth for the crops, contributes to the growth of the crops, improves the absorption rate and conversion rate of the selenium and the ferrum, and achieves an effect of producing the selenium and ferrum-enriched rice reaching the selenium and ferrum-enriched rice standard by applying a small amount of selenium and ferrum.
Owner:广东海纳农业有限公司 +1

Water-soluble mineral fertilizer and preparation method thereof

The invention discloses a water-soluble mineral fertilizer, belongs to the field of crop fertilizers, and particularly relates to a water-soluble inorganic mineral fertilizer. The water-soluble mineral fertilizer is composed of an A component, a B component and a C component, wherein the A component is composed of potash feldspar, powdered rock phosphate, medical stones, kieselguhr, bentonite and a water-soluble hydrophilic grafting agent; the B component is composed of urea, biological nitrogen-fixing bacteria, a urease inhibitor, a nitrification inhibitor and carboxymethyl starch, and the C component is composed of polyaspartic acid, polyyvinylpyrrolidone and casein. A preparation method of the water-soluble mineral fertilizer takes an inorganic mineral powder body as a main raw material, the water-soluble hydrophilic grafting agent is utilized, and the inorganic mineral powder body is dissolved in the water to form a stability colloid. The water-soluble mineral fertilizer provided by the invention contains a large number of nitrogen phosphorus and potassium elements and also contains different medium/trace elements and rare earth elements required by the growth of a plant, a soil structure is improved, the growth of the plant is improved, the product quality of a crop is improved, a raw material is easily available, the price is low, the raw material is non-pollution, the production technology is simple, and a market prospect is wide.
Owner:甘肃百金惠戈壁农业科技有限公司

Scale and corrosion inhibitor for treating circulating cooling water

The invention relates to a scale and corrosion inhibitor for treating circulating cooling water, which is prepared from the following components in percentage by weight: 10 to 35 percent of polyaspartic acid (PASP) or polyepoxysuccinic acid, 10 to 35 percent of sodium gluconate, 0.15 to 3 percent of methyl benzotriazole, 1 to 5 percent of imidazoline and deionized water. The polyaspartic acid (PASP) or the polyepoxysuccinic acid (PESA) with biodegradability serving as a main body is compounded with the deionized water, the methyl benzotriazole, the sodium gluconate and the imidazoline to form a phosphorus-free product; the sodium gluconate has good synergy with the methyl benzotriazole and the imidazoline, so the scale and corrosion inhibiting effect is good, and scale formation, corrosion and bacteria and algae propagation of the circulating water can be effectively prevented; and when the added mass concentration is 20mg/L, the corrosion rate is 0.0561mm/a. Under the same water quality condition, the scale and corrosion inhibitor has low adding concentration, low adding quantity and low cost compared with other like products; and the scale and corrosion inhibitor is stable at a high temperature, has certain chlorine resistance and oxidation resistance, can ensure that a system has no scale or corrosion or the like, and can be adapt to the water quality of various complex severe working conditions.
Owner:HUBEI ZO TAI ENVIRONMENT TECH

Polyaspartic acid ester polyurea protective paint with good corrosion resistance, preparation method, using method and application

The invention belongs to the technical field of spraying polyurea elastic materials, and discloses polyaspartic acid ester polyurea protective paint with good corrosion resistance. The polyaspartic acid ester polyurea protective paint with the good corrosion resistance is mainly prepared from the following raw materials: a material A and a material B, wherein a molar ratio of NCO in the material Ato NH in the material B is 1.05-1.1; the material A is mainly prepared from 20-40% of polyether glycol and 60-80% of polyisocyanate; and the material B is mainly prepared from 70-85% of polyasparticacid ester, 1-5% of nano oxidized graphene, 5-10% of nano metallic oxide filler, 5-10% of pigment and filler, 1-3% of a defoamer, 1-3% of a flatting agent and 2-5% of an adhesion promoter. The invention provides a preparation method, a using method and application of the polyaspartic acid ester polyurea protective paint. The invention has the advantages that after aging the polyaspartic acid esterpolyurea protective paint for 350 d, a change rate of tensile strength is less than 4.5%, and a change rate of elongation at break is less than 5.0%, the polyaspartic acid ester polyurea protective paint has a good mechanical property and corrosion resistance, an adhesive force is stronger, capacity of an anti-corrosion coating to resist an environmental change in practical application can be improved, and maintenance cost is reduced.
Owner:四川嘉宝莉涂料有限公司

Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method

The invention discloses a phosphorus-free composite scale and corrosion inhibitor and application thereof as well as a circulating water treatment method. The phosphorus-free composite scale and corrosion inhibitor comprises a scale inhibitor, a dispersing agent, an organic phosphorus-free corrosion inhibitor and a manganese salt, wherein the scale inhibitor consists of polyaspartic acid and/or polyepoxysuccinic acid; the weight ratio of the scale inhibitor to the dispersing agent to the organic phosphorus-free corrosion inhibitor to the manganese salt is 1:(0.2-10):(0.5-100):(0.025-1); the weight of the manganese salt is calculated according to manganese ions. The phosphorus-free composite scale and corrosion inhibitor and a non-oxidizing bactericide, particularly isothiazolinone, have a good synergistic effect, a sterilizing effect of the non-oxidizing bactericide can be obviously improved, and the fast sterilization and long drug effect time are reflected. In addition, the phosphorus-free composite scale and corrosion inhibitor is environment-friendly, has phosphorus-free and nitrogen-free characteristics and meets the green and environment-friendly requirements, and the environmental burden is lightened. Moreover, the phosphorus-free composite scale and corrosion inhibitor is wide in water quality application range and is easy to popularize and apply.
Owner:CHINA PETROLEUM & CHEM CORP +1

Production method of organic selenium-iron-zinc-rich nutrition enhanced rice

The invention relates to a production method of selenium-iron-zinc-rich rice, in particular to a production method of preparing the selenium-iron-zinc-rich rice through applying selenium-iron-zinc-rich organic and inorganic special fertilizers. The production method of organic selenium-iron-zinc-rich nutrition enhanced rice sequentially comprises the following steps of: seed selection, seedling culturing, field cultivation, rice seedling transplanting, field management, harvesting and processing, wherein the field management comprises fertilization, the applied fertilizers are the selenium-iron-zinc-rich organic and inorganic special fertilizers, the number of fertilization times is 1 to 4, and the selenium-iron-zinc-rich organic and inorganic special fertilizers comprise selenite, ferrite, zinc salts, nitrogenous fertilizers, phosphatic fertilizers, potash fertilizers, polyaspartic acid, polyaspartate, decomposed organic fertilizers and silicon fertilizers. Through the application of the selenium-iron-zinc-rich fertilizers, selenium, iron and zinc elements and other nutrition enhanced substances required by growth are simultaneously provided for crops, the application of the fertilizers is favorable for the crop growth, the absorption rate and the conversion rate of selenium, iron and zinc are improved, and the selenium-iron-zinc-rich rice conforming to the food standard is produced.
Owner:广东海纳农业有限公司 +1

Scraping coating type polyurea elastomer corrosion-resistant and wear-resistant material and preparation method thereof

The invention discloses a scraping coating type polyurea elastomer corrosion-resistant and wear-resistant material and a preparation method thereof. The scraping coating type polyurea elastomer corrosion-resistant and wear-resistant material is characterized by comprising an ingredient A and an ingredient B, wherein the ingredient A is prepolymers with NCO end groups obtained through the reaction between 30 to 40 mass percent of polyether polyol and 60 to 70 mass percent of polyisocyanates; the ingredient B is prepared from 30 to 40 mass percent polyaspartic acid ester, 60 to 70 mass percent of filling materials and a small number of auxiliary agents through high-speed dispersion grinding. In the use process, the prepared ingredient A and the prepared ingredient B are weighed according to the weight ratio of 1:4, and are then uniformly mixed; next, scraping coating construction is performed. The material has the characteristics of high mechanical intensity, corrosion resistance, wear resistance, good anti-seeping performance, aging resistance, proper reaction speed, no solvent, convenient construction and the like. The scraping coating type polyurea elastomer corrosion-resistant and wear-resistant material is particularly suitable for industrial and mining enterprise equipment and spare part anti-corrosion wear-resistant liners.
Owner:NORTHWEST RES INST OF MINING & METALLURGY INST

Wastewater treating agent, preparation method and wastewater treatment method

The invention relates to a wastewater treating agent, a preparation method and a wastewater treatment method. According to the oil paint wastewater treating agent, the formula comprising a corrosion inhibitor, a scale inhibitor, a sterilizing agent and a flocculating agent is adjusted, and an auxiliary chemical is added, so that the wastewater treatment process is easy to control, the treatment period is short, and the treatment effect is remarkably improved; the wastewater treating agent comprises the corrosion inhibitor, the scale inhibitor, the sterilizing agent, the flocculating agent and the auxiliary chemical; the corrosion inhibitor comprises sodium polyphosphate, calcium gluconate, alkyl epoxy sodium carboxylate, potassium iodide and gelatin; the scale inhibitor comprises trisodium phosphate, tannin, sodium humate, sulfoacid copolymers and TH-0100 type reverse osmosis scale inhibitors; the sterilizing agent comprises potassium permanganate, didodecyl dimethyl dibenzyltinoammonium chloride and nano-zinc oxide; the flocculating agent comprises lignin, chitosan, quaternary amine type cationic starch, polyaluminum chloride , polymeric ferric sulfate and diatomite earth; the auxiliary chemical comprises polyaspartic acid and alky epoxy carboxylate. An experiment result proves that the wastewater treating agent has an excellent effect.
Owner:上海云火环境科技有限公司

Potlife-adjustable wind turbine blade coating and preparation method thereof

The invention relates to the technical field of chemical coatings, and particularly discloses a potlife-adjustable wind turbine blade coating and a preparation method thereof. The coating consists of components A and C, wherein the component A is prepared from the following raw materials in parts by weight: 20 to 40 parts of polyaspartic acid ester resin, 3 to 6.5 parts of liquid acrylonitrile butadiene rubber, 1.5 to 4 parts of a water removal agent, 2 to 12 parts of a reactive diluent, 0.4 to 2 parts of a wear-resistant agent and 34.8 to 74.9 parts of an auxiliary; the component C is prepared from the following raw materials in parts by weight: 93 to 99 parts of an isocyanate curing agent and 1 to 7 parts of an organic solvent. The potlife of the potlife-adjustable wind turbine blade coating is adjustable between 0.5 to 2.5 hours, the potlife-adjustable wind turbine blade coating has low glossiness, solid content capable of reaching over 80 percent, high flexibility, impact resistance, rub resistance, weather resistance and short construction period, and can be used as a primer and a topcoat for single-pass construction, and the long-term protection requirements of a wind turbine blade and the development trend of low coating VOC are met.
Owner:XIAMEN SUNRUI SHIP COATING
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