10results about How to "High effective content" patented technology

The present invention relates to the field of fresh-keeping technology, and in particular to a fruit, vegetable and flower fresh-keeping package. The fruit, vegetable and flower fresh-keeping package is prepared from the following components: sodium chlorite, a modified activator, an ethylene inhibitor and auxiliary materials, wherein the modified activator is obtained by encapsulating an organic acid activator with sulfonated β-cyclodextrin and then encapsulating chitosan. The fruit, vegetable and flower fresh-keeping package provided by the present invention realizes efficient and long-term fresh-keeping of fruits, vegetables and flowers, and has broad market potential and application prospects.

The invention discloses a production process and system of high-concentration 2,4-dichlorophenoxyacetic acid sodium salt. The main reactions involved in this process are chloroacetic acid salt-forming reaction, 2,4-dichlorophenol salt-forming reaction, and condensation reaction. After the reaction, solid-liquid separation is carried out by a filter press, and the high-salt mother liquor therein is acidified by acidification, and the two phases are separated after standing after acidification. The organic matter is recovered and applied back to the condensation reactor, and the wastewater part (containing the high-salt mother liquor) enters a triple-effect evaporation system, and biochemical sewage treatment is carried out; the (2,4-dichlorophenoxyacetic acid sodium salt) crystallization filter cake of the filter press is dried and dusted by hot air and packaged into finished products. The present invention overcomes the shortcomings of the prior art, has a reasonable design, can effectively increase the concentration of 2,4-dichlorophenoxyacetic acid sodium salt, has a good weed control effect, and has a certain prevention and control effect, and has a high social use value and application prospect.

The invention provides a natural photocatalyst with an ultrahigh specific surface area as well as a preparation method and application thereof, and belongs to the technical field of sewage treatment. The preparation method comprises the following steps: culturing algae in a heavy metal polluted water body, carrying out sectional pore expansion on the obtained algae rich in endogenous metals, mixing a primary carbonized product with an activator, carrying out chemical regulation and control treatment to obtain a carbonized product, and sequentially washing and drying the carbonized product to obtain the natural photocatalyst. A natural raw material rich in endogenous active substances and rich endogenous mineral components such as Fe, Ni, Mn, Zn or Ti are prepared by utilizing the excellent biological enrichment effect of seaweed on heavy metals in a water body, the graphitization level of the catalyst is improved in the pyrolysis process, formation of an edge defect structure is promoted, the electron transfer capacity is remarkably improved, and the catalytic activity of the catalyst is improved. The catalytic performance of the catalyst is obviously improved, a preliminary carbonization product can be obtained through sectional pore expansion, and a carbon layer structure is twisted or deformed in the chemical regulation process, so that pores are formed. The specific surface area of the prepared natural photocatalyst reaches up to 3360.28 m < 2 > / g, the removal effect on organic dye is remarkable, the removal rate reaches 90% or above, and the purposes of resource utilization of seaweed solid waste and environmental protection can be achieved.

This invention belongs to the field of oil and gas well reservoir stimulation technology, specifically relating to an emulsion for fracturing fluid suitable for bio-colloid flowback fluids and its preparation method. The fracturing fluid emulsion for bio-colloid flowback fluids, by weight, comprises the following raw material components: 80-100 parts acrylamide, 20-30 parts glycyl alanine, 5-10 parts cyclomethylsiloxane oil-in-water dispersant, 10-20 parts 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, 10-20 parts hydroxyethyl methacrylate, 15-30 parts 2-acrylamido-2-methylpropanesulfonic acid, 60-80 parts white oil, 5-10 parts emulsifier, 5-10 parts initiator, and 10-15 parts water. This fracturing fluid emulsion significantly increases the solids content while also improving the performance of the fracturing fluid product, thus exhibiting excellent thickening properties even when formulated with bio-colloid flowback fluids.

The invention provides a preparation method and application of hydroxyl cyclic sultone, and belongs to the technical field of chemical synthesis, and the preparation method comprises the following specific steps: reacting epichlorohydrin with sodium hydrogen sulfite under the action of a phase transfer catalyst to obtain 3-chloro-2-hydroxyl propane sodium sulfonate; 3-chloro-2-hydroxyl propane sodium sulfonate is subjected to ring closing in the presence of a phase transfer catalyst and under the alkaline condition, and epoxy propane sodium sulfonate is obtained; carrying out ring opening on the sodium epoxypropane sulfonate under an acidic condition to obtain 2, 3-dihydroxy sodium propane sulfonate; the preparation method comprises the following steps: enabling sodium 2, 3-dihydroxy propane sulfonate to pass through cation exchange resin to obtain 2, 3-dihydroxy propane sulfonic acid; and carrying out high-temperature vacuum cyclization dehydration on the 2, 3-dihydroxy propane sulfonic acid to obtain the 2-hydroxy-1, 3-propane sultone. The reaction does not need purification, the low yield caused by repeated purification is avoided, the effective content of the synthesized 2-hydroxy-1, 3-propane sultone product is high, meanwhile, the reaction risk is reduced, the yield of the product is greatly improved, and large-scale production is facilitated.

The invention discloses a solid mud acid system and a preparation method thereof. The solid mud acid system comprises solid hydrogen release acid, solid fluorine release acid and a solid acidification additive; the total mass of the solid hydrogen release acid and the solid fluorine release acid accounts for more than 60% of the total mass of the solid mud acid system, and the balance is the solid acidification additive. The solid mud acid system is solid powder particles which are stable under normal temperature and normal pressure conditions, when the solid mud acid system is used on site, 20-30% by mass of solid mud acid powder is directly diluted with fresh water and stirred for 10 min, and a solid mud acid solution can be obtained and used for plugging removal of an oil-water well in an oil field. The acidizing agent is used for acidizing construction of the offshore operation time and space limited platform, can replace an existing land solid acid system, has the advantages of being high in effective ingredient content, small in dosage, convenient to store and transport, easy to construct and the like, and can effectively solve the problem that conventional acidizing of the offshore operation time and space limited platform cannot be normally carried out.

The application provides a preparation method of 2,3-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborinane-2-yl)pyridine. The method can reduce the use amount of borate, reduce the cost, reduce the three wastes, and make the effective content of the product higher.

The invention provides a preparation method of sodium polydipropane disulfide sulfonate, firstly mixing a thioamide compound, 1,3-propane sultone and a solvent, reacting to obtain 3-sulfimido propane sulfonic acid, then controlling pH>10 with an organic base, adding an oxidant to the 3-sulfimido propane sulfonic acid for reaction, and finally obtaining sodium polydipropane disulfide sulfonate after reduced pressure concentration, soaking, washing, suction filtration and drying. The present invention directly performs sulfonation oxidation with thioamide compounds and 1,3-propane sultone as raw materials to obtain sodium polydipropane disulfide sulfonate, provides a new synthesis idea of ​​sodium polydipropane disulfide sulfonate, avoids the problem of using inorganic substances such as hydrogen sulfide or sulfide salt as raw materials in the prior art, reduces the synthesis steps of sodium polydipropane disulfide sulfonate, has the characteristics of simple process, low energy consumption, less waste water, high yield of product and high effective content, and is conducive to the industrial production of sodium polydipropane disulfide sulfonate.

The invention relates to the technical field of preservation, in particular to a fruit, vegetable and flower preservation bag. The fresh-keeping bag for fruits, vegetables and flowers is prepared from the following components: sodium chlorite, a modified activating agent, an ethylene inhibitor and an auxiliary material, and the modified activating agent is obtained by wrapping an organic acid activating agent with sulfonated beta-cyclodextrin and then wrapping with chitosan. The fruit, vegetable and flower fresh-keeping bag provided by the invention realizes efficient and long-acting fresh keeping of fruits, vegetables and flowers, and has wide market potential and application prospects.

The invention relates to a plant composition for treating atopic dermatitis, the mixing mass ratio of baicalein-containing extract to ursolic acid-containing extract to alkannin-containing extract is (1-30): (1-20): (1-20), and the content of baicalein in the baicalein-containing extract is not less than 70%; the content of ursolic acid in the ursolic acid-containing extract is not less than 60%; the content of alkannin in the alkannin-containing extract is not less than 30%. The plant composition for treating atopic dermatitis is composed of the baicalein-containing extract, the ursolic acid-containing extract and the alkannin-containing extract, the main effective components of the plant composition are baicalein, ursolic acid and alkannin, the three components cooperate with each other to achieve a synergistic effect, and the plant composition has an inhibiting effect on biofilm development of staphylococcus aureus and can be used for treating atopic dermatitis. The staphylococcus aureus polypeptide can be used for destroying a formed biological membrane, interfering synthesis of peptidoglycan, inhibiting generation of cell walls and effectively relieving the problem of skin itch caused by staphylococcus aureus; meanwhile, inflammatory factors in the body are reduced, and skin inflammatory response is inhibited. And the plant composition is extracted from natural plants, has high effective content, and is safer and milder compared with chemical medicines.