170results about How to "Fast biodegradation" patented technology

A solid drug solution perforator (SSP) system and an associated drug reservoir are provided for delivering therapeutic, prophylactic and / or cosmetic compounds, for nutrient delivery and for drug targeting. For drug delivery, the SSP system includes an active drug ingredient and a matrix of perforator material that biodegrades or dissolves quickly upon contact with a patient's body. The SSP system provides a skin barrier perforator and a controller for prompt initiation and cut-off drug delivery. In a preferred method of transdermal drug delivery, an SSP system containing a selected drug penetrates into an epidermis or dermis, and the drug is promptly released from the (dissolving) SSP system perforator. An additional drug is optionally delivered from a patch reservoir through skin pores created by insertion of the perforator. Formulation and fabrication procedures for the SSP and associated reservoir are also provided. An SSP system can be fabricated with variety of shapes and dimensions.

A solid drug solution perforator containing drug particles and / or drug-adsorbed or loaded particles with an associated drug reservoir (SSPP system) are provided for delivering therapeutic, prophylactic and / or cosmetic compounds, diagnostics, and for nutrient delivery and drug targeting. For drug delivery, the SSPP system includes an active drug ingredient in particulate form or drug adsorbed on the particle surface in a matrix material that dissolves upon contact with a patient's body. In a preferred method of transdermal drug delivery, an SSPP system containing a drug-adsorbed microparticle penetrates into the epidermis or dermis, and the drug is released from the (dissolving) SSPP system perforator and desorbed from the particles. An additional drug is optionally delivered from a patch reservoir through skin pores created by insertion of the perforator Formulation and fabrication procedures for the SSPP and associated reservoir are also provided. An SSPP system can be fabricated with variety of shapes and dimensions.

A solid drug solution perforator (SSP) system and an associated drug reservoir are provided for delivering therapeutic, prophylactic and / or cosmetic compounds, for nutrient delivery and for drug targeting. For drug delivery, the SSP system includes an active drug ingredient and a matrix of perforator material that biodegrades or dissolves quickly upon contact with a patient's body. The SSP system provides a skin barrier perforator and a controller for prompt initiation and cut-off of drug delivery. In a preferred method of transdermal drug delivery, an SSP system containing a selected drug penetrates into an epidermis or dermis, and the drug is promptly released from the (dissolving) SSP system perforator. An additional drug is optionally delivered from a patch reservoir through skin pores created by insertion of the perforator. Formulation and fabrication procedures for the SSP and associated reservoir are also provided. An SSP system can be fabricated with variety of shapes and dimensions.

Composite spherical projectiles are provided for shotgun cartridges which are environmentally compatible, relatively inexpensive and have ballistic properties similar to lead shot or projectiles and which consist of metal particles dispersed in a biogradable polymeric solid matrix which includes a hydrocarbon binder containing ester functional groups which are linked to C1-20 aliphatic hydrocarbon chains, starch, and titanium dioxide.

The invention relates to degradable materials, in particular to a cigarette filter tip which is made of natural materials such as plant-derived polysaccharides. A manufacturing method of the cigarette filter tip comprises the steps that raw materials are mixed to carry out fermentation, and extrusion forming is carried out through an extruding machine to form the cigarette filter tip. The cigarette filter tip comprises, by weight, 5-60 parts of polysaccharide, 20-60 parts of solvent, 0.5-10 parts of adsorbent, 1-30 parts of plasticizer, 0.1-10 parts of vegetable protein and 1-5 parts of zymophyte. When a cigarette filter tip made of traditional acetic acid cellosilk and the cigarette filter tip are compared, the amount of tar is reduced by 5% through the cigarette filter tip. Internal pores are uniform, the density is low, the capacity of intercepting the tar and toxic and harmful substances is good, and biodegradation can be rapidly carried out. According to the result of a soil burying test, the materials of the cigarette filter tip can be fully and biologically degraded in 28 days.

The invention discloses a complete biodegradation foam material and a preparation method thereof; the complete biodegradation foam material mainly comprises polyhydroxy alkanoate, starch and foaming agent; the complete biodegradation foam material is characterized in that: the complete biodegradation foam material does not comprise polylactic acid, and 20-80 parts of the polyhydroxy alkanoate, 20-60 parts of starch and 0.5-5 parts of the foaming agent are included by weight. The foam material takes the starch and the polyhydroxy alkanoate as main raw materials, has good physical properties, can carry out complete biodegradation and greatly reduces the manufacturing cost of the foam material.

The present invention is one kind of nanometer hollow spherical granular hydroxyapatite and its preparation process. The nanometer hollow spherical granular hydroxyapatite has diameter of 130-170 nm, wall thickness of 40-50 nm, crystalline hydroxyapatite content of 40-60 % and amorphous calcium phosphate for the rest. The preparation process includes the following steps: dropping calcium salt solution slowly into solution containing phosphate radical and CTAB as template agent at certain temperature and in ultrasonic condition, dropping ammonia water solution to regulating the solution pH value to 9-10 and obtain milk white suspension, filtering, washing and low temperature vacuum drying. The nanometer hollow spherical granular hydroxyapatite has simple preparation process, light weight, great specific surface area and important application foreground in medicine release controlling carrier, medicated tissue engineering rack, etc.

The present invention relates to one kind of water soluble acrylic resin for ink, polish oil and paint and its preparation process. The organic silicone oil modified acrylic resin is prepared with acrylic acid monomer 15-57 wt%, organic silicone oil with double bond 1-15 wt%, organic solvent 20-60 wt% and initiator 0.1-10 wt%, and through free radical solution polymerization at 60-160 deg.c to obtain organic silicone oil modified acrylic resin, adding neutralizing agent and water through stirring, distilling to eliminate organic solvent, further adding neutralizing agent and water to reach solid content of 20-60 wt%. The organic silicone oil modified acrylic resin has high vitrification point, low filming temperature, high water tolerance and other advantages.

The invention belongs to the technical field of environmental protection science and engineering, and in particular relates to a biological aerated filter for sewage treatment and a process. The biological aerated filter adopts a mode of two-stage series connection; a filter plate is arranged in the biological aerated filter; support layers are arranged on the filter plate; a first stage positioned above the support layers is provided with fillings; a second stage positioned above the support layers is provided with the fillings; an air pipe is arranged between the filter plate and the supportlayers; the upper part between the two stages of the biological aerated filter is provided with a water pore; the bottoms of the two stages of the biological aerated filter are provided with perforation spoil disposal pipes; a water inlet pipe is arranged at the lower part of the filter plate through the first-stage biological aerated filter; a back flush water inlet pipe and an outlet pipe are arranged at the lower part of the filter plate through the second-stage biological aerated filter, and a back flush outlet pipe is arranged at the upper part of the filter plate. The biological aeratedfilter has the process technology for sewage treatment with less land occupation, investment saving, low operating cost, high efficiency and convenient operation and management, and can be widely applied to the sewage treatment.

The invention discloses a biodegradable composition and a preparation method thereof, which consist of a biodegradable homopolyester (A), a biodegradable copolyester (B) and a chain extender (C), the total weight of which is 100 parts by mass Calculated, containing (A+B) is 95.0~99.9 parts and containing C is 0.1~5.0 parts, wherein the ratio of A:B is in the range of 1:9~9:1. The present invention finds that the compounding of biodegradable homopolyester with faster biodegradation rate and biodegradable copolyester with better processability in different proportions can not only endow the composition with proper biodegradation rate, but also improve the composition The physical properties and processing performance can be properly adjusted according to the requirements of different processing and application fields; we also found that by introducing a chain extender with long chain characteristics into the biodegradable resin composition, the combination after chain extension can be avoided It can prevent unnecessary gel phenomenon during processing and improve the heat resistance and stability of the material.

A tree shelter includes a biodegradable fibrous mat coated with a degradable resin and adapted to be formed into a roll which can enclose at least the lower part of a plant. The mat is preferably non-woven and its structure is preferably impregnated with a second degradable resin which degrades at a different, preferably faster, rate to that of the first degradable resin under the same environmental conditions. Such a shelter has the advantage that once the first resin has substantially degraded over a predetermined time period to expose the mat to the weather, the second degradable resin commences a faster degradation to cause the mat to decompose rapidly into a loose fibrous state and ultimately form a beneficial mulch around the stem or trunk at the base of the plant.

The invention discloses a foaming agent for a shield. The foaming agent contains the components in percentage by weight: 1.0-10.0% of alpha-olefin sulfonate (AOS), 1.0-8.0% of sodium fatty alcohol -polyoxyethyleneether sulfate (AES), 1.0-6.0% of ammonium lauryl sulfate (K12 ammonium), 1.0-6.0% of cocoanut fatty acid diethanolamide (6501), 1.0-5.0% of dodecyl dimethyl betaine (BS-12), 0.005-0.1% of fluorocarbon surfactant (FS), 0.2-5.0% of sodium nitrilo triacetate (A92R), 0.2-5.0% of ethylene diamine tetraacetic acid disodium salt (EDTA) and the balance of water. The foaming agent for the shield provided by the invention realizes high multiple foaming rate, long foam stabilizing time, nontoxicity and innocuity and is an environment friendly biodegradable product which does not contain phosphorus.

The invention discloses a glycosyl modified polysiloxane organic silicone softener and a preparation method thereof. The preparation method comprises the steps of enabling gamma-glycidoxy propyl methyl dialkoxy silane and octamethyl cyclotetrasiloxane with the mole rate of 1: (2.5-50) to react in an alkyl polyglucoside surfactant and basic catalyst water solution at the temperature of 60-100 DEG C to obtain a semitransparent alkoxy modified polysiloxane intermediate emulsion; regulating the pH value of the alkoxy modified polysiloxane intermediate emulsion in the step (1) to 0.5-6, adding N, N-dimethyl-N'-glycosylacyl-1, 3-propane diamine, and enabling N, N-dimethyl-N'-glycosylacyl-1, 3-propane diamine and gamma-glycidoxy propyl methyl dialkoxy silane in the step (1) to react at the temperature of 70-95 DEG C to obtain a semitransparent glycosyl modified polysiloxane emulsion, wherein the mole ratio of N, N-dimethyl-N'-glycosylacyl-1, 3-propane diamine to gamma-glycidoxy propyl methyl dialkoxy silane is (0.3-0.8):1. The softener disclosed by the invention has the super softness of amino silicon oil and the solidifying and finishing effects of epoxy modified silicon oil, and can be used for effectively improving the washing fastness and the smoothness.

The present invention relates to a suspension emulsion gel loaded with fat-soluble vitamins and a preparation method thereof, and belongs to the technical field of food processing. The suspension emulsion gel comprises the following components in parts by weight: 1-10 parts of fat-soluble vitamins, 1-10 parts of vegetable proteins, 0.5-3 parts of polysaccharides and 30-60 parts of vegetable oil rich in unsaturated fatty acids. The preparation raw materials are cheap in source, safe, good in biocompatibility, fast in biodegradation and easy for modification. The prepared suspension emulsion gelhas good stability, is simple in technology, low in cots, safe, environmentally protective, good in product stability and high in bioavailability, can be used in various foods to enhance sensory value, edible value and nutritional value, and can also be used for preparing healthy functional foods or healthy accessory ingredients.

The invention discloses a method for preparing bio-based flame-retardant polyether glycol by virtue of epoxidized soybean oil. The polyether glycol is prepared from the following raw materials in parts by weight: 5 to 30 parts of the epoxidized soybean oil, 1 to 10 parts of micromolecular diol or alkylol amine, 0.5 to 2.0 parts of a basic catalyst, 40 to 60 parts of alkylene oxide and 1 to 5 parts of phosphodiester. The method comprises the following steps: performing ring opening reaction on the epoxidized soybean oil and the micromolecular diol or alkylol amine to obtain polyhydroxy soybean oil in the presence of the basic catalyst; reacting the polyhydroxy soybean oil and the alkylene oxide to obtain high-functionality soybean oil-based polyether glycol; reacting a part of OH groups of the soybean oil-based polyether glycol and the phosphodiester to obtain reactive bio-based flame-retardant polyether glycol. The method is simple and easy; polyurethane foam plastic prepared from the flame-retardant polyether glycol has a good flame-retardant effect, high foam quality and slight environmental and ecological influence.

The invention provides a preparation method of a degradable gas hydrate efficient accelerant. The accelerant is prepared by three substances including rhamnolipid, sodium carbonate (NaCO3) and sodium chloride (NaCl) according to a certain ratio. The using mass concentration of the accelerant is 0.05-2%. The preparation method can be applied to generation acceleration research of the gas hydrate, greenhouse gas collection such as CO2 by a hydration method and fields such as gas hydrate separation technology. The preparation method is processed in a high-pressure reactor; the gas is provided by a high-pressure gas cylinder; the gas is introduced into the reactor by a pneumatic booster pump; the temperature and the pressure are displayed by a transmitter; and the reaction situation is recorded in real time by a data acquisition system through a camera. As a degradable biological surfactant used for the accelerant is very environment-friendly, the accelerant does not influence the environment and is low in cost, low in dosage, good in the acceleration effect, and beneficial to hydrate industrial production.

The invention discloses a chemical synthetic pharmaceutical wastewater treatment device. The device comprises a pre-exposition adjustment pond, an enzyme supplementation anaerobic pond, an enzyme supplementation contact oxidation pond, an MBR biochemical pond and a sludge concentration pond; a reflux pipeline is connected between the pre-exposition adjustment pond and the enzyme supplementation anaerobic pond, a reflux pipeline is connected between the enzyme supplementation anaerobic pond and the enzyme supplementation contact oxidation pond, and a reflux pipeline is connected between the enzyme supplementation contact oxidation pond and the MBR biochemical pond; a biological suspension ball and an oxidation reduction potential (ORP) control system are arranged in the pre-exposition adjustment pond; an ORP control system, an MLSS online monitor and a DO online monitor are arranged in the MBR biochemical pond. The invention further discloses a sewage treatment method adopting the device. The method is resistant to high salinity, high in COD removal rate and remarkable in decoloration function, and the decoloration effect of wastewater high in treatment difficulty and the degradation effect of organic matter hard to degrade are remarkable. Moreover, the treatment cost is low, operation is simple, and the effluent quality index is stable; a composite biological enzyme obtained through the method can keep activity for a long term, and therefore the system has a long-lasting treatment effect.

The invention relates to the field of medicinal macromolecular materials, in particular to the application of a tri-block copolymer in the preparation of a medical anti-blocking material, aiming to provide a new choice for using the medical anti-blocking material in the field. A technical scheme of the invention is to provide the application of the polycaprolactone-polyethyleneglycol- polycaprolactone (PCL-PEG-PCL) tri-block copolymer in the preparation of the medical anti-blocking material, wherein the PCL-PEG-PCL copolymer has a molecular weight ranging from 1,500 to 8,000, the ratio of themolecular weight of the PEG chain segment to that of the PCL chain segment ranges from 0.2 to 2.5. The copolymer can be dissolved in water to form a solution and can form when a certain concentrationis achieved. Experiments show that the hydrogel of the PCL-PEG-PCL block copolymer can effectively prevent post-operation adhesion, thereby the invention provides a new choice for this field.

Eupatorine extractive is obtained from purplestem eupatorium and through washiong, crushing, soaking in organic solvent and / or water, extraction at 40-85 deg.c, filtering, chromatographic separation and concentration. Eupatorine extractive is mixed with nicotine, motherwort alkaloid and organic solvent inside one mixer through stirring at 40-100 deg.c; and the mixture is then mixed with added surfactant, theasaponine, azone, stabilizer, preservative and pH regulator through further stirring to obtain the eup; atorine pesticide product. The pesticide has obvious preventing and killing effect on homopteran, acarid and other pests in vegetable, fruits, flowers, forest and field.

A biological degradable soft packing material of starch base is a type of soft film packing material made of starch, plasticizer and filler. The material can be degraded thoroughly under natural condition after it is buried underground for 3-4 monthes.

Methods, compounds, and medicinal formulations utilizing biocompatible polymers for delivery of a drug, particularly for solubilizing, stabilizing and / or providing sustained release of drug from topical, implantable, and inhalation systems. Many of the methods, compounds, and medicinal formulations are particularly suitable for oral and / or nasal inhalation and use polymers of the formula —[X—R1—C(O)]— wherein each R1 is an independently selected organic group that links the —X— group to the carbonyl group, and each X is independently oxygen, sulfur, or catenary nitrogen.

The preparation method of stellera chamaejasme ketone pesticide includes: cleaning stellera chamaejasma, pulverizing, soaking in organic solvent, extracting for several times, concentrating to obtain stellera chamaejasme ketone extract, its extracting temp. is 30-95 deg.c and time is 2-10 hr., then placing 10-55 portions of said extract, 0-5 portions of nimbin, 0-12 portions of said extract, 0-5 portions of nimbin, 0-12 portions of leonurus alkaloid and 15-55 portions of organic solvent into the mixing still with stirring device and thermometer, stirring at 40-100 deg.c and mixing for 0.5-5 hr., adding surfactant 8-16 portions, theasaponin 2-30 portions, azone 0.2-2 portions, stabilizing agent 3-11 portions, preservative 0.5-1.5 portions and pH regulating agent 0.1-0.2 portion, and continuously stirring and uniformly mixing.

The invention relates to the technical field of modification of thermoplastic high molecular materials, and discloses a degradable PC (Poly Carbonate) / PLA (Poly Lactic Acid) alloy which is applied to the aspects of household appliances, living goods, electronic and electrical equipment and the like. The degradable PC / PLA alloy is prepared from the following materials: PC, PLA, compatilizer, antioxidant, nucleating agent, ester exchange accelerator and processing aid. The invention also discloses a preparation method of the degradable PC / PLA alloy. The invention aims to provide a degradable PC / PLA alloy which can be degraded on the basis of ensuring good comprehensive performance, thereby reducing the pollution to the environment. The invention also aims to provide a preparation method of the degradable PC / PLA alloy.

The invention relates to the field of medical high polymer materials, in particular to an application of MPEG-PLA (Methoxypolyethylene Glycols-Polylactic Acid) diblock copolymers in preparation of medical anti-blocking materials. The invention aims at providing a new selection for the medical anti-blocking material. The technical scheme for the technical problem is to provide the application of MPEG-PLA diblock copolymers in preparation of medical anti-blocking materials. The molecular weight of the MPEG-PLA copolymer is 3,000-12,000, wherein the ratio of the molecular weight of a PEG (Polyethylene Glycol) chain segment to the molecular weight of a PLA (Polylactic Acid) chain segment is 0.8-2, the copolymer can be dissolved in water to form a solution and can also form gel under certain conditions. The experimental result shows that the MPEG-PLA block copolymer hydrogel can be applied to medical anti-blocking materials with multiple excellent characteristics and provides a new selection for the field needing the medical anti-blocking materials.

The invention relates to a blend of PPC, PBAT, PCL and PLA and a preparation method thereof. The blend consists of PPC, PBAT, PCL, PLA, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the PCL, the PLA, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at the temperature not above 35 DEG C; and extruding and granulating cold mixing materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is greatly improved in comparison with the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.

The invention relates to the field of medical high polymer materials, and in particular to an application of triblock copolymer in preparation of medical anti-adhesion material. The invention aims tosolve the technical problem of providing a new choice for medical anti-adhesion material, and has the technical scheme of providing the application of PEG-PCL-PEG triblock copolymer in preparation ofmedical anti-adhesion material, wherein the molecular weight of the PEG-PCL-PEG copolymer is from 1500 to 10000, the ratio of the molecular weight of the PEG chain to the molecular weight of the PCL chain is 0.4 to 2.6; and the triblock copolymer can be dissolved in water to form a solution and form gel after reaching a certain intensity. Experiments prove that water gel of the PEG-PCL-PEG triblock copolymer has many good characteristics, and provides a new choice for the field of medical anti-adhesion materials.

A biological foam degradable packing material of starch and polypropylene is made of starch, polypropylene, paramonotoluene sulfuryl semicarbazide, sodium benzoate, 2,5-dimethyl-2,5-ditert butyl peroxyhexane or diisopropylbenzene peroxide, fatty glyceride and isopentene or carbon dioxide. The preparing process includes mixing materials, heating, extruding, rolling and setting.

The invention discloses an environment-friendly degradable-type halloysite nano-tubes / polyethylene film material which is composed of, by weight, 60-70 parts of linear low-density polyethylene, 8-15 parts of waxy corn starch, 8-15 parts of plant fiber powder, 3-6 parts of a silane coupling agent, 25-35 parts of a degradable calcium carbonate master batch, 10-18 parts of vinyl-terminated silicon oil, 0.3-0.8 parts of hydrogen-containing silicon oil, a proper amount of a sulfuric acid solution, a proper amount of a platinum catalyst, 10-15 parts of halloysite nano-tubes, 8-12 parts of white carbon black, and a proper amount of anhydrous ethanol. The polyethylene film material, after use, can be naturally decomposed into water and CO2 within 6-18 months, is high in biodegradation speed without generation of white pollution, and satisfies environment protection demand. The white carbon black and the modified halloysite have cooperative effects to form a special dual-filler net structure, so that the film material is significantly improved in tensile strength, stiffness and the like.

The invention relates to a biodegradable spandex for paper diaper, which comprises biodegradation promotion composition and spandex for paper diaper, wherein the biodegradation promotion composition includes potassium dodecyl phosphate, sodium lauroyl glutamate and UV-320. The preparation method of the biodegradable spandex for paper diaper comprises the following steps: 1) enabling oligomer diol to react with diisocyanate to generate prepolymer; 2) performing chain propagation reaction to the prepolymer through amine chain extender, to obtain polymer stock solution; 3) adding the biodegradation promotion composition to the polymer stock solution, and adding an antioxidant, a delustering agent and a lubricant, fully stirring, to obtain spinning stoack solution; and 4) performing dry-process spinning to the spinning stock solution to prepare the biodegradable spandex for paper diaper. The biodegradable spandex for paper diaper has high biodegradation speed, excellent adhesion effect with base materials, and smooth unwinding property.