83results about How to "Reduce hydrolysis rate" patented technology

Disclosed herein are core-shell type nanoparticles comprising nanoparticle cores made of a metal or semiconductor, and shells made of crystalline metal oxide formed on the surfaces of the nanoparticle cores, as well as a preparation method thereof. According to the disclosed invention, the core-shell nanoparticles, consisting of metallic or semiconductor cores and crystalline metal oxide shells, can be prepared by epitaxially growing metal oxide on the surfaces of the metallic or semiconductor nanoparticle cores. By virtue of the crystalline metal oxide shells, the core nanoparticle made of metal or semiconductor can ensure excellent chemical and mechanical stability, and the core-shell nanoparticles can show new properties resulting from the interaction between the metal cores and the metal oxide crystal shells.

The invention discloses a method for preparing hydrogen fluoride and coproducing white carbon black with silicon tetrafluoride, comprising the following steps: letting crude silicon tetrafluoride as byproduct from a phosphate fertilizer be subject to dedusting and dehumidification, then reacting with steam with the reacting dose for hydrolysis at the temperature of 200-800 DEG C, carrying out gas-solid separation on the obtained products to respectively obtain hydrogen fluoride and white carbon black. According to the invention, the low grade silicon tetrafluoride as byproduct of fluorine resources is used for preparing high purity absolute hydrogen fluoride and coproducing gas phase white carbon black, thus a novel method for producing gas phase white carbon black is developed, a novel technology of preparing gas phase white carbon black at low temperature is realized, the energy consumption in the preparation is reduced, the raw material is easily available, the price is low, the utilization rate of the raw material is low, and a cost advantage is achieved compared with traditional production method of absolute hydrogen fluoride. The invention can create good economical benefits, and bring huge environmental benefits and social benefits, belonging to a clean production process.

A process to prepare stoichiometric-nanostructured materials comprising generating a plasma, forming an "active volume" through introduction of an oxidizing gas into the plasma, before the plasma is expanded into a field-free zone, either (1) in a region in close proximity to a zone of charge carrier generation, or (2) in a region of current conduction between field generating elements, including the surface of the field generation elements, and transferring energy from the plasma to a precursor material to form in the "active volume" at least one stoichiometric-nanostructured material and a vapor that may be condensed to form a stoichiometric-nanostructured material. The surface chemistry of the resulting nanostructured materials is substantially enhanced to yield dispersion stable materials with large zeta-potentials.

Pharmaceutical compositions and methods of using them. Lipid formulations of a glutathione analog and methods of manufacturing them. Their use to stimulate hematopoiesis, protect hematopoietic cells from damage caused by radiation or chemotherapy, or potentiate the stimulatory action of one or a combination of cytokines on colony formation by hematopoietic progenitor cells, protect a subject from a destructive effect of a chemotherapeutic agent or irradiation, or to potentiate the effect of a chemotherapeutic agent.

The invention discloses a marine culture device equipped with a feed recovery drum. The marine culture device comprises a cylindrical culture box used for culturing, wherein the bottom part of the interior of the culture box is separated into the feed recovery drum through a partition plate; the marine culture device also comprises a feed distribution mechanism used for feeding a feed; a stirringbox is connected with and arranged above the feed distribution mechanism through a conveying pipe; the upper part of the stirring box is connected with a feeding hopper; one side of the interior of the feed recovery drum is connected with a water conveying pump; and the other side of the interior of the feed recovery drum is connected with a collection pipe which is connected with a liquid suctionpump. The marine culture device provided by the invention can effectively solve the death of a cultured animal due to turbidity of a culture water body, effectively improves the survival rate of thecultured animal, and can realize controllable feeding and recycling of the feed.

The invention belongs to the technical field of dip-dyeing of textiles and concretely relates to a low-temperature composite activated black dye and an application thereof. The low-temperature composite activated black dye is formed by compounding the following dyes in percentage by mass: 50-70% of activated dye A as shown in a formula (1), 10-25% of activated dye B as shown in a formula (2), 0-10% of activated dye C as shown in a formula (3), 0-10% of activated dye D as shown in a formula (4), 0-10% of activated dye E as shown in a formula (5) and the balances of auxiliaries. All the activated dye compounds selected by the low-temperature composite activated black dye provided by the invention have excellent compatibility; dyeing defects and color dots are not easily generated when the low-temperature composite activated black dye is used; in addition, when the low-temperature composite activated black dye is used for dyeing, low-temperature fixation can be realized, and low-alkaline and alkaline multi-adding processes are adopted, so that the hydrolysis rate of the dye is greatly reduced, and then, the absolute fixation rate of the dye is greatly increased.

A process to prepare stoichiometric-nanostructured materials comprising generating a plasma, forming an "active volume" through introduction of an oxidizing gas into the plasma, before the plasma is expanded into a field-free zone, either (1) in a region in close proximity to a zone of charge carrier generation, or (2) in a region of current conduction between field generating elements, including the surface of the field generation elements, and transferring energy from the plasma to a precursor material to form in the "active volume" at least one stoichiometric-nanostructured material and a vapor that may be condensed to form a stoichiometric-nanostructured material. The surface chemistry of the resulting nanostructured materials is substantially enhanced to yield dispersion stable materials with large zeta-potentials.

The invention relates to an original form dechroming method for chrome leather fragment, and application of a product thereof in fertilizer aspect. The method comprises the following steps of: adding water and calcium oxide, soaking at 20-40 DEG C for 1-4 days, washing by water and filtering; adding water, acid and salt into the filter residue, dechroming at 20-30 DEG C for 2-4 hours, washing by water and filtering; continuing to add water, salt and alkaline into the filter residue, keeping the temperature and dechroming for 30-60 min, regulating the pH to be neutral, washing by water and filtering; obtaining an original form dechromed product of chrome leather fragment; mixing and crushing the original form dechromed product of chrome leather fragment with plant ash, pelleting, and thus containing an agricultural composite fertilizer. The composite fertilizer not only has low chrome content and is rich of potassium element and organic nitrogen, but also has certain slow release function, and can effectively promote growth of plants.

The invention discloses a disperse reactive dye one-bath dyeing method, and belongs to the field of textile printing and dyeing. The method is characterized in that a screened trichromatic reactive dye having high-temperature resistance and low hydrolysis rate under an alkaline condition and a screened trichromatic disperse dye which can moderately tolerate a dyeing solution with a certain alkalinity and does not turn colors are used for dyeing, and under technological conditions that the temperature is 120 DEG C or less, the dyeing bath ratio is (8-30):1, the pH value is adjusted to 9 or less with HAC-NaAC or sodium carbonate and the dyeing solution needs to be added with 15-45 g/L NaCl or anhydrous Na2SO4, the combined dye can implement one-bath one-step method dyeing of polyester-cotton fabrics.

This invention relates to hydrolytically degradable gels of crosslinked poly(ethylene) glycol (PEG) structures. Addition of water causes these crosslinked structures to swell and become hydrogels. The hydrogels can be prepared by reacting two different PEG derivatives containing functional moieties at the chain ends that react with each other to form new covalent linkages between polymer chains. The PEG derivatives are chosen to provide covalent linkages within the crosslinked structure that are hydrolytically degradable. Hydrolytic degradation can provide for dissolution of the gel components and for controlled release of trapped molecules, including drugs. Reagents other than PEG can be avoided. The hydrolysis rates can be controlled by varying atoms adjacent to the hydrolytically degradable functional groups to provide substantially precise control for drug delivery in vivo.

The invention discloses a method for synthesizing a polyepoxysuecinic acid salt, which is characterized by comprising the following steps of: dissolving maleic anhydride in deionized water; adding a solution of sodium hydroxide at 30 to 60 DEG C with stirring; adding sodium tungstate and hydrogen peroxide when the temperature is controlled to be between 60 to 100 DEG C; adjusting the pH value to 5 to 7 for reaction for 2 to 100 hours; cooling the reaction solution to below 20 DEG C; adding a precipitator, mixing and stirring the precipitator and the solution; performing suction filtration, adding water into filtrate obtained after suction filtration; keeping the pH value between 6 and 7; heating the filtrate added with water to 70 to 100 DEG C to obtain an epoxysuecinic acid salt; preparing a 0.2 to 4.0 mol/L aqueous solution of the epoxysuecinic acid salt; adding calcium hydroxide and a polymerization promoter into the aqueous solution for performing polymerization reaction till liquid turns yellowish and pasty; and cooling the yellowish and pasty liquid to room temperature to obtain the polyepoxysuccinic acid salt. The method has the advantages of good product quality, low raw material cost and product scale inhibition performance advantageous over that of the prior art.

The invention discloses a nylon-cotton fabric one-bath dyeing method with an activated dye. The method comprises the steps that a nylon-cotton fabric is soaked into a activated dye liquor, dyeing is conducted under the conditions that the bath ratio is adjusted to be 1:(5-20) and the temperature is 20-30 DEG C, the temperature is raised to 55-75 DEG C, heat preservation is conducted for 5-15 min, then the temperature is raised to 105-125 DEG C, heat preservation is conducted for 30-40 min, 1-5 g/L sodium carbonate is added, and heat preservation is conducted for 5-25 min at the fixing temperature of 60-90 DEG C, wherein the activated dye liquor comprises 1-5% owf of rare earth coordinated microencapsulated activated dye, 5-15 g/L of anhydrous sodium sulphate, 0.5-10 g/L of pH lubricating agent, 0.1-0.3 g/L of hydrozybenzene halogenide and 0.01-0.1 g/L of organic fluoride surface active agent. The dyeing method has the advantages of being high in fixation rate and good in leveling property and is simple in technology and short in dyeing time, the consumption of salt in the activated dye is greatly reduced, and environmental protection is achieved.

Transesterified organosilicon compounds, including ionic organosilicon compounds and coupling agents, and aqueous-based compositions including transesterified organosilicon compounds are provided. Compositions comprising at least one transesterified organosilicon are suitable for application to various inorganic, organic and cullulosic surfaces for imparting water repellency and improved wetting. Compositions comprising transesterified organosilicon compounds exhibit reduced flammability, improved hydrolytic stability, reduced gloss and improved water repellency while maintaining reactivity with various substrates.

The present invention relates to a PET bottle flake regeneration functional fiber production technology, comprising the following steps: bottle flake screening and pre-treatment, adding of a far-infrared masterbatch and an antibacterial agent, melt spinning, forming, drawing and oil applying, curling, heat setting, cutting and package; through controlling of technical parameters of all reaction steps, the purpose of improvement of product quality can be achieved, in the pre-treatment step, bottle flake effective tackifying can be performed, the production process consistency of tackified bottle flakes is stronger, in downstream textile and garment manufacturing, garments are more comfortable to wear, and more obvious in warming characteristics; after the tackifying, in the next procedure production, raw material melting temperature is reduced, extrusion screw current is correspondingly reduced, and production cost is reduced.

This disclosure relates to natural topical and analgesic pain relief and anti-inflammation compositions and methods to reduce pain and inflammation. This disclosure also relates to the use of non-steroidal anti-inflammatory compounds (NSAIDs) in hydrophilic compositions comprised of synthetic and natural plant extract compounds that are multifunctional TRPM8 ion channel agonists, TRPA1 and TRPV1 ion channel antagonists, CGRP antagonists, and COX-2 inhibitors. In particular, this disclosure relates to a topical analgesic composition comprising at least one NSAID, at least one synthetic or natural plant extract TRPM8 agonist, at least one synthetic or natural plant extract is a TRPA1 antagonist, and at least one fixed plant seed oil containing Omega-3 fatty acids TRPV1 antagonists, and a carrier.

The invention belongs to the technical field of emulsifying devices, and particularly relates to an ASA emulsifying device and a control method. The emulsifying device comprises a water treatment device, an emulsifying agent pretreating device, emulsifying equipment and a controller, wherein the emulsifying agent pretreating device comprises a first static mixer, a reactor and a second static mixer which are sequentially connected serially; the emulsifying equipment comprises an emulsifying agent pump, a sizing agent pump, an emulsifying pump, an acid pump and a water pump; the emulsifying equipment further comprises a circulating pipeline; the controller is in communication connection with a pH meter, a pressure sensor and a temperature sensor. The control method adopting the ASA emulsifying device comprises the following steps: pretreating water, pretreating an emulsifying agent, treating the emulsifying agent, mixing ASA and the emulsifying agent, performing primarydilution and performing secondary dilution. The ASA emulsifying device is simple in structure, convenient and fast to operate and stable and reliable in technology, and reduces the hydrolysis degree of a sizing agent.