693 results about "Synthetic Polymeric Macromolecules" patented technology

The present invention provides one kind of water gel containing natural high molecular material and its preparation process. The water gel has cross-linking degree of 70-95 % and water absorption of 500-80000 %, and contains natural high molecular material or its derivative selected from chitin, chitin derivative, chitosan, chitosan derivative, carrageenin, etc. The water gel may have synthetic high molecular material, inorganic filler, cross-linking sensitizer, medicine and other assistant added. It is prepared through radiation cross-linking, with the radiation dosage being 10-40 kGy. The water gel of the present invention has high water absorption, high flexibility, good medicine slow releasing performance, and may be used in wound dressing, etc.

New ligands, compositions, metal-ligand complexes and arrays with pyridylamine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with hafnium metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, isobutylene or styrene. Certain of the catalysts are particularly effective at polymerizing propylene to high molecular weight isotactic polypropylene in a solution process at a variety of polymerization conditions.

The invention discloses nano-silver antibacterial hydrogel and a preparation method thereof, wherein the antibacterial hydrogel does not contain a chemical cross-linking agent, a cross-linking sensitizing agent and a cross-linking initiator; the porosity is above 90%; the cross-linking degree is above 50%; by weight, the nano-silver antibacterial hydrogel comprises 3-20% of natural polymer or a derivative thereof, 0-20% of synthetic polymer and 0..005-0.2% of nano-silver; and the nano-silver antibacterial hydrogel is prepared by blending the natural polymer or the derivative thereof, the synthetic polymer, a compound containing silver ions and water and then adopting a radiation cross-linking method. The nano-silver antibacterial hydrogel disclosed by the utility model has good biocompatibility and uniform nano-silver distribution and slow-release capability and is capable of effectively inhibiting bacteria, such as escherichia coli.

The invention relates to a method for preparing composite biological medical material used to avoid adhering organisms, wherein said film is formed by two layers; the layer used as base material is formed by degradable composite macromolecule polylactic acid, glycolic acid, or their copolymer, treated by static spin technique, to make film fiber into nanometer level; then coats one layer of degradable natural macromolecule chitose or relative derivant on the base film, to be treated to obtain the degradable composite biological medical film; and the invention can add different amounts of medical elasticizer between two layers to adjust the degrade speed. The invention can improve immunity with haemostasis function, etc.

The invention discloses a ful- degradable liquid mulch film, taking renewable and cheap natural macromolecule humic acid, lignin and waste slag as main raw material, containing no artificial macromolecule monomer in burdening. The product is characterized by good thermal insulating, and water retention function, low cost, environment- friendly, and adjustable degradating time about 30-120 days according to different requirement. The invention is characterized in that: it effectively overcomes problem of hard degradation for normal plastic mulch film, and it can fully degrade under natural environment, and the final product is soil humic acid fertilizer and carbon dioxide and there is no harm component residual.

The invention discloses a preparation method of a self-suspension proppant. The self-suspension proppant is prepared by dispersing a water-soluble polymer material into an aggregate at 15-150 DEG C, wherein the water-soluble polymer material is selected from natural polymer materials, artificially synthesized polymer materials or semi-naturally semi-artificially synthesized polymer materials, and the use amount of the water-soluble polymer material accounts for 0.1-15wt% of that of the aggregate. By virtue of optimized selection of raw materials and process conditions, a preparation process of the proppant which covers the polymer material simply, conveniently and effectively is dramatically obtained, the material cost is reduced, and a used covering material cannot cause pollution to the environment. The self-suspension fracturing proppant disclosed by the invention does not need high-cost fracturing fluid containing organic high polymers to perform fracturing, but directly uses natural water available everywhere to perform fracturing, so that pollution is reduced, and the cost is reduced.

The invention discloses an environmental-friendly magnesium alloy mold releasing agent which comprises organic silicon, a synthetic macromolecular compound, grease, an antirust corrosion inhibitor, a preservative, a surface active agent and water. The environmental-friendly magnesium alloy mold releasing agent has excellent flowing property, thus the generation of poor flowing property can be greatly reduced. The product has excellent adsorbing performance, thus the lubricating mold releasing performance of the product can be obviously improved; the product has excellent heat insulating performance, thus the molding quality of a workpiece can be obviously improved; meanwhile, the environmental-friendly magnesium alloy compression-casting mold releasing agent has environmental protection and high performance.

The invention discloses a multiplex composite engineering scaffold material capable of gradually decomposing bone tissue and a preparation method thereof. The composite scaffold material consists of calcium phosphate bone cement, biological compatible degradable synthetic high polymer and biological compatible degradable natural high polymer, has better mechanical property and gradient degradation characteristic, and can achieve the aim of regenerating and repairing bone tissue defect by implanting a bone growth factor to induce in-vivo stem cells to be differentiated into bone cells, thereby obviously improving initial strength and toughness of the scaffold material, and ensuring enough strength and toughness of the scaffold material during operating and implanting. After compounded with the high polymer material, the scaffold has excellent flexibility, so that the scaffold can be subjected to certain machining, such as cutting and the like.

The invention provides a preparation method for multiple micropore negative ion far-infrared electric field biological affinity packing. The preparation method is characterized by taking synthetic polymer particles as base materials, adding multiple micropore biological affinity materials or other modified materials, and simultaneously adding natural materials continuously and automatically generating the negative ion and the far-infrared ray to the base materials, then adding all the materials into a mixer, adding dispersing agent to have all the materials fully and evenly mixed, transferring the mixture to a mixing hopper of a injection molding machine to have various types of random-packed packing directly injected in mould; or having the various types of the random-packed packing made into synthetic macromolecule multiple micropore negative ion far-infrared electric field biological affinity function master batch, adding proper fresh macromolecule materials to be shifted to a drawing mill, pulling out elastic packing strips prior to being processed into elastic packing; and/or shifting the fresh macromolecule materials to spinning equipment to make the same into fiber strips, utilizing a needle machine to have the fiber strips woven into curtain-type packing strips. The preparation method has the advantages that the preparation method is fully used for absorbing and bearing a great deal of multiple types of microorganisms to play a role of synergistic degradation; and absorption of the micropore materials and degradation of the microorganism play a synergistic function together during the course of pollutant removal.

The invention discloses a method for preparing a nano-carbon coated lithium battery anode material. An active carbon material which is highly graphitized and has a porous structure is prepared from waste crops, and serves as a substrate; uniformly dispersed nano tin dioxide particles are loaded on the substrate subjected to simple treatment, natural or synthetic polymer is used as a carbon source, and a carbon layer coats the nano tin dioxide particles so as to fulfill the aim of combining the regulation function of nano dispersion of the nano particles on volume expansion of the tin dioxide with the restraint and buffer function of the coated carbon layer on the tin dioxide particles; therefore, higher battery capacity and cycle stability can be achieved.

The invention provides a method for improving the granulation performance of a urine-based fertilizer and belongs to the field of compound fertilizer production. The method comprises the following steps that: a granulating loop is filled with a boning agent which is one or a mixture of a plurality of water soluble organic synthetic macromoleclar polymers, inorganic macromoleclar polymers or inorganic compound filters and natural or semisynthetic water soluble macromoleclar polymers or is added with agents capable of chemically reacting with urea to produce a thickener to obtain a viscous urea meltwater; and the viscous urea meltwater is delivered to a granulating machine to be mixed with a solid raw material and a return material brought by a return conveyer to be bonded and granulated. The method is simple, easy to implement and convenient to operate and can improve the granulation performance of the urine-based fertilizer, reduce returned material and greatly improve the production capacity of the device. In addition, by adding the bonding agent, the method improves the controlled-release effect of nitrogen and the utilization rate of the fertilizer and reduces the loss of nitrogen element in soil.

The invention provides a nanophase carbon fiber based on the lignin which has wide material source and simple producing process. It is made by the lignin and the compound macromolecule with the 50-300nm diameter and 1-20 mu m length. The preparation method includes the process: (1) mixing the lignin and the compound macromolecule according to some ratio, then to cut sheet which is dried in vacuum; (2) the lignin/compound macromolecule mixing fiber is get by fusing filature method; (3) the mixing fiber is set in the drying box with protecting gas and preoxidation in air; it is carbonized in inert gas; then cool to room temperature and get the product.

The invention discloses a high-strength and high-conductivity neutral dual-network hydrogel electrolyte and a preparation method and an application thereof. The rigid and water-soluble natural high-molecular material is used as a first polymer network, the flexible and water-soluble synthetic high-molecular material acts as a second polymer network, the sulfate acts as neutral conductive inorganic salt, and the natural high-molecular/synthetic high-molecular neutral dual-network hydrogel electrolyte containing the sulfate is obtained by using the preparation method of gamma-ray or electron beam radiation polymerization crosslinking. The hydrogel electrolyte and activated carbon electrode are assembled into a flexible supercapacitor which has the same specific capacitance and better rate performance and charge and discharge cycling stability in comparison with the supercapacitor assembled by using the same sulfate aqueous solution as the electrolyte and also has excellent anti-compression and compression-resistant performance and anti-bending and bend-resistant performance.

This invention relates to production of aggregate aluminium sulphate iron. Industrial waste residue used as raw material, flying ash as auxiliary agent, a one-step synthesizing method achieves to yield the macromolecule flocculant. The macromolecule flocculant has the characteristic of aluminium salt and iron salt flocculant. And it can cleanse water and many other uses, specially, good for environment.

The present invention provides a lithium ion polymer battery comprising an electrode having excellent adhesion and electrical conductivity between a current collector and an active material layer, cycle capacity maintaining characteristics being improved, wherein a bonding layer, which bonds the current collector to the active material layer, is stable to an organic solvent in an electrolytic solution and is excellent in storage stability, and also, it is made possible to suppress the corrosion of the current collector by a strong acid such as hydrofluoric acid generated in the battery.

The invention relates to an endotoxin sorbent as well as its making method, using natural or synthetical high molecule as carrier and dimethyl amine as ligand, and linked with oxhydryl at beta bit of the dimethyl amine, and its amidocyanogen content is 10-130 mu mol/g. Because electrovalent bond, hydrogen bond and eight ring can form at the same time between this structure and the endotoxin and the hydrophobic chain of the endotoxin and the sorbent is on the same side of the eight ring, and it has endotoxin -identifying and -absorbing ability. It can eliminate the endoxtoxin in biochemical products and in patient's blood.

A filter element includes a bundle of hollow fiber type separation membranes made of a natural or synthetic macromolecular material and a sealed part made of a thermoplastic resin. The bundle has an opening in at least one terminal part thereof. The sealed part is bonded to the bundle at a temperature not higher than the melting or decomposing temperature of the macromolecular material and adapted to seal watertightly the opening of the bundle in a half-bonded state showing no compatibility with the macromolecular material and permitting persistence of the mutual interface of bondage.

The invention relates to a modifier for acidic soil. The modifier comprises the following components in percentage by weight: 10-30% of yellow phosphorus slag, 5-20% of acidic soil modifier, 5-10% of artificially synthesized high-molecular compound, and the balance of mineral substances, wherein the yellow phosphorus slag mainly comprises CaSiO3; the acidic soil modifier refers to lime substances such as calcium carbonate, calcium oxide, lime nitrogen and the like; the artificially synthesized high-molecular compound refers to one or a mixture of more of polyacrylic acid, vinyl acetate maleic acid and polyvinyl alcohol type high-molecular compounds; mineral substances refer to peat, lignite, decomposed coal, vermiculite, bentonite, zeolite, perlite, sepiolite and the like. The modifier can effectively improve the yield reduction phenomenon of crops caused by an acidic hardened land, and has the advantages of being low in cost, fast, and simple to operate and the like.

The invention discloses a filter stick flavor enhancing tea particle and a preparation method thereof. The preparation method for the filter stick flavor enhancing tea particle comprises the following steps of: smashing one or several of white tea, dark green tea, yellow tea, black tea, green tea, wulong tea, as well as waste tea dust and tea stems of the white tea, the dark green tea, the yellow tea, the black tea, the green tea, the wulong tea at the temperature of below 55DEG C; sieving to obtain fine powder of 120-200 meshes; adding aqueous solution of hydrophilic polymer binding agent into the obtained fine powder; evenly stirring to obtain an intermediate; pelletizing via a sieve of 20 meshes by a granulator; sieving to obtain particles of 20-60 meshes; and drying or carrying out air drying on the obtained particles at the temperature of 10-55DEG C until moisture is 6-14%. The tea particle consists of 97-99.5% of tea powder and 0.5-3% of hydrophilic polymer binding agent, and the hydrophilic polymer binding agent is cellulose ethers, natural polymer and derivants thereof or polypropylene-series synthetic polymers. The obtained particle has the advantages of good aroma keeping performance and big specific surface area. The particle is fully contacted with smoke to gradually elute particle surface tea aroma, and the internal tea aroma in the particle is gradually released to perform the action on enriching the cigarette aroma. Meanwhile, the particle post processability is good, the addition amount is easy to control, and the risk that the particle enters the mouth in a dust mode is eliminated.

The invention discloses an electrophoresis-displaying microcapsule and its preparing method, which recondenses hydrolysate of styrene-maleic anhydride copolymer and glutin to prepare the microcapsule. By the proper technique, it firstly emulsifies the encapsulated matter in the styrene-maleic anhydride copolymer solution, adds in the gultin, and then recondenses them by adding acid and/or water. Its advantages: provision of synthetic high-molecular styrene-maleic anhydride copolymer overcomes the disadvantage that the natural gum Arabic high molecule is easy to degrade so as to affect performance of the microcapsule, and reduces the cost. And by proper technique, it can prepare circular microcapsules which are stable, sealed and have more uniform particle size distribution.

The invention discloses a preparation method of a lignin base skin core structure nanometer/micron fiber. The preparation method comprises the following steps: (1) by mass, adding one part of mixture of lignin and petroleum base macromolecules into 1-20 parts of organic solvents, and obtaining a lignin mixing solution after evenly mixing and fully dissolving the mixture; adding 1 part of natural or synthetic macromolecules into 4-25 parts of solvents, and obtaining a macromolecule solution after evenly mixing and fully dissolving the natural or synthetic macromolecules; and (2)performing coaxial electric spinning, leading the lignin mixing solution and the macromolecule solution respectively into two layers of a coaxial needle head, and obtaining the lignin base skin core structure nanometer/micron fiber under the effects of 5-100kV high-voltage electrostatic field when the solutions are stably extruded out of the coaxial needle head. The preparation method is simple and moderate in conditions, reduces degree of diffusion of the lignin towards a skin layer simultaneously, and improves continuity and evenness of a core layer material in the fiber.

Described are fiber materials having improved malodor scavenger properties and a process for the manufacture of said materials. In particular, described are fiber materials usable in the manufacture of disposable or washable diapers, incontinent products, sanitary napkins and other such hygiene and personal care articles with improved malodor scavenger properties, and to methods of manufacturing such materials. It has been found that the incorporation of, especially nanosized, metal particles and/or a cyclodextrin material into fibers creates a “reactive” material having excellent malodor scavenging properties. More specifically, it has been found that the presence of nanosized metal or metal alloy particles and/or a cyclodextrin material in a fiber material, preferably a synthetic polymer material and more preferably a synthetic thermoplastic polymer fiber material leads to fiber materials or nonwovens having odor-controlling properties. The fiber material especially is useful in the manufacture of hygienic products like disposable diapers.

The invention belongs to the color polymer modified emulsion asphalt-base waterproof paint and a preparation method thereof. The color polymer modified emulsion asphalt-base waterproof paint is prepared by adopting multiple synthesis macromolecular polymers such as high-concentration ultrafine suspension micro-emulsion anion modified color emulsified asphalt, SBS (Styrene Butadiene Styrene) rubber, neoprene, macromolecular resin, epoxy resin and the like and multiple functional assistants such as the plasticizer as raw materials and by utilizing a special production process. After the color polymer modified emulsion asphalt-base waterproof paint forms a film, the color is bright, no brittle rupture exists at the low temperature of minus 30DEG C, no flowing exists at the high temperature of 120DEG C, the resilient return rate reaches 90 percent, the color polymer modified emulsion asphalt-base waterproof paint can be stably stored for more than 2 years, and the service life can reach 50 years.