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161results about How to "Small molecular weight" patented technology

Marine biological function cosmetic for minimizing pores

The invention discloses marine biological function cosmetics for minimizing pores. The marine biological function cosmetics for minimizing the pores are prepared by mixing and homogenizing main active ingredients and a cosmetic substrate, wherein the main active ingredients comprise marine shellfish active peptide, marine collagen protein peptide, seaweed polysaccharide and fish oil. Hyaluronic acid and vitamin C (Vc) are added, so that the effect is more obvious. The marine biological function cosmetics for minimizing the pores solve the problems that the conventional cosmetics for minimizing the pores have high irritation and short action time, the marine shellfish active peptide is not applied to cosmetics, the marine biological active substances are not applied to the cosmetics for minimizing the pores and the like. The marine biological function cosmetics for minimizing the pores are safe, mild, high-efficiency and durable, can minimize the pores from inside to outside, recover fineness, softness and smoothness, and enable skin to give out natural, clean and transparent gloss. The marine biological function cosmetics for minimizing the pores have various types, such as cream, emulsion, water agent, gel, spray or masks, have obvious and durable pore-minimizing effect and can serve as the common skin-care products or the cosmetics with the function of minimizing the pores. After the marine biological function cosmetics are not used, the pore bulky symptom is not rebounded.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI +1

Nucleic acid aptamer derivative and application thereof in preparation of medicament carrier

The invention discloses a nucleic acid aptamer derivative and application thereof in preparation of a medicament carrier. The derivative is the single-chain DNA represented by formula (I); a nucleic acid aptamer is represented by the sequence 1 of a sequence list; and n is equal to 1 to 50. The nucleic acid aptamer derivative provided by the invention is liver cancer cell targeted, so that the nucleic acid aptamer derivative can serve as the medicament carrier for targeted administration of liver cancer cells in a human body to specifically kill the liver cancer cells and greatly reduce the toxicity of an anti-cancer medicament to the organism. The nucleic acid aptamer derivative provided by the invention can be chemically synthesized in a large scale and has the advantages of easy connection with medicament molecules, low cost, relatively low molecular weight, no immune activity or toxicity, and good stability. The prepared medicinal composition is stable. The medicinal composition (targeted medicament) provided by the invention has a strong bonding force with the liver cancer cells, can greatly reduce the toxic and side effects during chemical treatment of liver cancer and has very high application value. The formula (I) is: 5'-(CG)n-nucleic acid aptamer-3'.
Owner:谭蔚泓

Humic acid synergistic slow-release compound fertilizer and preparation method thereof

The invention discloses a humic acid synergistic slow-release compound fertilizer and a preparation method thereof and belongs to the technical field of slow-release compound fertilizers. The fertilizer is prepared from the following raw materials in parts by weight: 15-45 parts of nitrogen fertilizer, 15-35 parts of phosphorus fertilizer, 10-25 parts of potassium fertilizer, 1-10 parts of medium trace elements, 5-15 parts of biological humic acid and a controlled-release agent, wherein the nitrogen fertilizer raw material comprises urea which accounts for 8-25% of total weight, the addition of the controlled-release agent is 0.7-0.9% the weight of urea, the controlled-release agent is prepared by mixing an urease inhibitor and a nitrification inhibitor in a weight ratio of 1 to (0.5-1), and biological humic acid is prepared by fermenting crushed bagasse and animal waste by using a special microbial agent. Biological humic acid which has the advantages of small molecular weight, strong activity, good solubility and the like is added into the compound fertilizer, and the controlled-release agent and biological humic acid are combined by using a method of combining amino acid granulation and urea-based guniting, so that the fertilizer conserving and supply condition of soil is improved while the utilization rate of the fertilizer is improved.
Owner:HUBEI XIANGYUN GROUP CHEM

Method for producing calcium fluoride by waste LCD panel glass etching liquid

InactiveCN104071820ALow priceSmall molecular weightCalcium/strontium/barium fluoridesAmmonium bifluoridePolyacrylamide
The invention relates to a method for producing calcium fluoride by waste LCD panel glass etching liquid. The method sequentially comprises the following steps: weighting a certain amount of waste LCD panel glass etching liquid, adding a sodium fluoride solid, fully stirring to enable hexafluorosilicate and sodium fluoride in the waste liquid to completely react to generate sodium hexafluorosilicate and hydrofluoric acid and to enable hexafluoroaluminate and sodium fluoride to completely react to generate sodium hexafluoroaluminate and hydrofluoric acid; then adding ammonia water to react so as to generate silicon dioxide, sodium fluoride and ammonium bifluoride, and enabling the sodium hexafluoroaluminate and the remanent sodium hexafluorosilicate to settle rapidly; then filtering a precipitate, taking a supernatant to be added into a calcium hydroxide suspension, and stopping the addition of the supernatant until the pH is equal to 5 to enable calcium hydroxide to fully react with hydrofluoric acid so as to generate calcium fluoride; then adding the calcium hydroxide suspension into the former solution to enable the sodium fluoride and the ammonium bifluoride to respectively react with the calcium hydroxide so as to generate calcium fluoride; adding a polyacrylamide solution into the former solution, performing precipitation, filtering and cleaning, and finally drying to obtain the calcium fluoride solid. The purity of calcium fluoride is above 95%.
Owner:YANGZHOU BRIGHTMAN INT

Heavy metal wastewater treatment medicament and treatment method of heavy metal wastewater

The invention relates to a heavy metal wastewater treatment medicament. The heavy metal wastewater treatment medicament comprises the following raw materials by weight: 1 part of cationic polyacrylamide, 3 to 8 parts of anionic polyacrylamide, 10 to 30 parts of an inorganic flocculating agent, 1 to 3 parts of a heavy metal chelating agent, and 58 to 85 parts of an absorbent. The invention further provides a heavy metal wastewater treatment method which comprises the following steps: taking 1 L of chemical wastewater; adding a NaOH solution into the wastewater till the pH of the obtained solution is 8.0 to 9.0; adding the heavy metal wastewater treatment medicament into the obtained solution, wherein the addition volume of the heavy metal wastewater treatment medicament is 0.04 to 0.08 percent of the weight of the chemical wastewater; stirring fast for 10 seconds; stirring slowly for 20 minutes; stopping stirring; allowing the obtained liquid to stand still for 10 minutes for layering. The heavy metal wastewater treatment medicament and the heavy metal wastewater treatment method have the benefits that 1, the preparation is simple; 2, the molecular weight of cationic polyacrylamide is low, and positive charge groups of cationic polyacrylamide can adsorb negative charges of bentonite, so that a filtration aiding system of a tight structure is formed; 3, anionic polyacrylamide is high in molecular weight, so as to subside fast and generate thick floc.
Owner:SCI GREEN SHANDONG ENVIRONMENT TECH CO LTD

Method for preparing low-molecular-weight sturgeon chondroitin sulfate by utilizing sturgeon chine

The invention relates to a method for preparing low-molecular-weight sturgeon chondroitin sulfate by utilizing sturgeon chine. The method is characterized by comprising the following steps of scalding sturgeon chine, removing little residue on cartilage, cutting the sturgeon chine into blocks, and washing with water, drying, pulverizing and filtering the sturgeon chine blocks; adding NaOH and extracting a sturgeon chondroitin sulfate extracting solution in a lukewarm bath; adjusting pH value, adding mixed enzyme of trypsase and papain for enzymolysis, deactivating the enzyme, adjusting pH value, decoloring through active carbon, and filtering; adding 80% to 95% ethanol, drying and pulverizing; degrading through oxalic acid, radiating through 5 to 15kGy cobalt 60gamma ray, adjusting pH value, adding ethanol, extracting the precipitates, drying the precipitates, and carrying out ball milling on the precipitates through a planetary-type gear ball mill, thus obtaining the low-molecular-weight sturgeon chondroitin sulfate with the molecular weight of 5000Dalton to 20000Dalton. The radiation degradation is combined with the supermicro pulverizing technology, so that the molecular weight of the chondroitin sulfate can be reduced, and the bioavailability of the chondroitin sulfate can be improved; moreover, the physical method is simple and easy, the treatment process is pollution-free, the production cost is low, the product purity is high, and the method is suitable for industrialized mass production.
Owner:FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI

Composite silver nanoparticles, composite silver nanopaste, and production method, production apparatus, conjugation method and patterning method of the same

A cold formation method of composite silver nanoparticles has been established. Thus, provided are composite silver nanoparticles comprising a silver core, which is made up of aggregated silver atoms and has an average particle diameter of from 1 to 20 nm, and an organic coating layer formed thereon which comprises at least one member selected from an alcohol molecule derivative having 1 to 12 carbon atoms, an alcohol molecule residue or an alcohol molecule; a composite silver nanopaste which contains at least the composite silver nanoparticles and a solvent and/or a viscosity grant agent added thereto; a method of producing the same; an apparatus for producing the same; a method of bonding the same; and a method of patterning the same. The method of producing the composite silver nanoparticles comprising mixing silver salt microparticles with an alcohol solvent in excess to prepare an excess alcoholic solution, reacting the solution in a reaction chamber for a predetermined period of time at a predetermined temperature, and thus forming silver cores from the silver salt at a low temperature by the reducing effect of the alcohol and also forming an organic coating layer derived from the above-described alcohol around the silver cores.
Owner:APPLIED NANOPARTICLE LAB CORP

Phosphorus-free corrosion and scale inhibitor

InactiveCN101767885ASmall molecular weightImprove corrosion and scale inhibition performanceScale removal and water softeningNon-contaminated water treatmentIonItaconic acid
The invention relates to a phosphorus-free corrosion and scale inhibitor for use in water treatment equipment. The phosphorus-free corrosion and scale inhibitor comprises the following active components in part by weight: 9 to 10 parts of itaconic acid-acrylic acid-acrylate copolymer, 4 to 5 parts of 2-acrylamide-2-methylpropane sulfonic acid-diethylacrylamide polymer, 4.5 to 5.5 parts of polyepoxysuccinic acid and 5 to 6 parts of hydrolyzed plymaleic anhydride. The active components of the phosphorus-free corrosion and scale inhibitor are natural macromolecular compounds which have a natural ring-shaped structure and characteristics of hydrophilic outer cavity and hydrophobic inner cavity and active groups having high valence metal ion chelation are on the outer sides of the natural macromolecular compounds, so that the inhibitor has a certain corrosion and scale inhibiting property; corrosion and scale inhibiting performance of the inhibitor is greatly improved due to the modification by the advanced technique of multi-disciplines, such as the electrochemistry theory, the quantum chemistry theory and the molecular structure design, molecular weight reduction and the introduction of active groups; and in addition, the inhibitor has the advantages of high corrosion and scale inhibiting performance, no toxin nor harmlessness, stable performance, low price, corrosion resistance, rich raw material sources, easy biological degradation in the environment and the like.
Owner:张文宇

Novel fluorine organic solar battery acceptor material as well as preparation method and application thereof

InactiveCN108129447ASimple molecular structureSmall molecular weightOrganic chemistryFinal product manufactureChemistryHigh absorption
The invention belongs to the technical field of organic solar battery materials and in particular relates to a novel fluorine organic solar battery acceptor material as well as a preparation method and application thereof. Aiming at the defects that a conventional non-fullerene micromolecule acceptor material is complex in molecule structure, relatively large in molecular weight, hard in preparation process, expensive in synthesis raw material, not beneficial to commercial application, and the like, the invention provides the novel fluorine organic solar battery acceptor material, a fluorine organic solar battery acceptor material S-1 and a fluorine organic solar battery acceptor material S-2 are of simple linear structures, are simple in molecular structure, small in molecular weight, small and simple in preparation step, cheap and easy in synthesis raw material obtaining, wide in visible light absorption range and high in absorption strength; when the fluorine organic solar battery acceptor materials are applied to an organic solar battery photovoltaic device, the manufacturing cost of the device is greatly reduced on the basis that a wide absorption range and high absorption strength of the device are ensured, and soon commercial application of an organic solar battery can be facilitated.
Owner:WUHAN UNIV OF TECH

Golden camellia polysaccharide extracting method

The invention provides a golden camellia polysaccharide extracting method. The golden camellia polysaccharide extracting method golden camellia polysaccharide extracting method comprises the following steps that 1, golden camellia leaves are subjected to extraction with water to obtain a water extract solution; 2, after the water extract solution is concentrated, ethanol is added to perform precipitation, and a precipitate is obtained for standby application; 3, the precipitate obtained in the step 2 is washed by using absolute ethyl alcohol and acetone sequentially, then distilled water is added for dissolution, and then protease is added to perform enzymolysis so as to obtain enzymatic hydrolysate; 4, the enzymatic hydrolysate is processed under frequency ultrasonic waves, dialysis is performed by using a dialysis bag capable of cutting off 18000-28000 molecular weight, the retained liquid is subjected to dialysis by using a dialysis bag capable of cutting off 400000-500000 molecular weight, the obtained permeated liquid is concentrated, then ethanol is added for precipitation, and a precipitate is obtained for standby application; 5, the precipitate obtained in the step 4 is washed by using absolute ethyl alcohol and acetone sequentially, then distilled water is added for dissolution, and activated carbon decoloration, filtration and drying are performed to obtain golden camellia polysaccharide. The golden camellia polysaccharide prepared by means of the golden camellia polysaccharide extracting method has higher immunological competence.
Owner:GUILIN MEDICAL UNIVERSITY

Production method for extracting fish collagen protein powder from Tilapia mossambica skin and scale

ActiveCN103271217AThe formula is simple and feasibleSmall molecular weightProtein composition from fishAmino acid contentFish protein powder
The invention belongs to a production method for extracting fish collagen protein powder from Tilapia mossambica skin and scale. The production method is characterized in that the fish collagen protein powder is pure fish collagen protein powder and is prepared by the following processes of: steeping the Tilapia mossambica skin and scale which serve as the raw materials in acid, freezing and drying, performing biological enzymolysis, filtering, spraying and drying, etc.; and the biological activity of the effective constituents is remained completely. The fish collagen protein powder subjected to the production extraction is high in content of extracted protein and amino acid and relatively low in content of fat, can meet the demand of human body to nutrient substances each day, is easily absorbed and utilized by the human body, and is helpful for improving the immunity of the organism of a human body, improving the memory, keeping the body healthy and energizing the body after long-term use. According to the production method, the leftovers of the Tilapia mossambica are fully utilized and prepared into the foods with nutrient substances, so that the enterprise benefit and the social benefit are obviously increased; and the production method is simple and convenient and is easily realized by technicians.
Owner:JIAHUA MARINE PROD BIO PHARMA HAINAN

Methods for producing humic acid potassium and liquid fertilizer as well as liquid fertilizer

The invention discloses methods for producing humic acid potassium and liquid fertilizer, belonging to the technical field of agriculture. The method for producing humic acid potassium comprises the steps: smashing raw materials of humic acid into at least 20 meshes, adding water, blending, adding vitriol with the concentration of 2 mol so that the pH value is within the range of 3.0-3.2; adding potassium permanganate while blending, and rising the temperature to 55-60 DEG C; blending and reacting for at least 2h, adding potassium hydroxide liquid with the concentration of 35 percent, and rising the temperature to 70-80 DEG C so that the pH value is within the range of 8.5-9.5; reacting for at least 0.5h, taking out supernatant liquor of a reacting substance, and drying to obtain humic acid potassium. The method for producing liquid fertilizer comprises the steps: dissolving 18 parts by weight of monoammonium phosphate and 20 parts by weight of monopotassium phosphate into 70 parts by weight of water; adding 15 parts by weight of potassium hydroxide while blending; adding 9 parts by weight of carbamide; and adding 12 parts by weight of humic acid potassium while blending and producing liquid fertilizer. The invention also discloses the liquid fertilizer.
Owner:邓志刚
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