753 results about "Macromolecular Compounds" patented technology

The invention discloses a method for using flue gas desulfurization gypsum to prepare calcium sulfate whisker, comprising process steps of size mixing, high-temperature crystallization, drying and coating, etc. The method utilizes the flue gas desulfurization gypsum as the raw material, which has low production cost, short technological process and saves natural gypsum mine and effectively relieves the environmental pollution problem of the flue gas desulfurization gypsum. The product purity can be up to more than 98 percent, which can be used as filler with medium intensity or as friction material, building material or insulating material, and the like, instead of asbestos. The product can also partly replace organic macromolecular compounds such as glass fiber, resin, rubber and plastic, and the like, and has good describability.

The invention relates to an emulsifying and viscosity-decreasing method of thick oil. The method comprises the following steps: mixing oil-soluble component with hydrocarbon solvent to prepare an agent A; mixing nonionic-anionic surfactant, straight chain or branched chain macromolecular compound containing hydrophilic groups with water to prepare an agent B; firstly mixing the agent A with thickoil, secondly adding the agent B in the mixture of the agent A and thick oil and mixing to form an oil-in-water emulsion. The method can be used for the emulsifying and viscosity-decreasing of thick oil and especially for the emulsifying and viscosity-decreasing of thick oil under the condition of ultrahigh rock salt formation.

The invention discloses an environmental-protective composite inhibiting antisludging agent, which comprises the following parts: inhibiting component, antisludging component and deionized water, wherein the inhibiting component is composed of one or more materials in the molybdate, tungstate, borate, organic substituted carboxylic acid or organic heterocyclic compound; the inhibiting component contains one or more materials in the natural macromolecular compound, epoxy succinic acid or acroleic acid ternary copolymer.

The invention relates to a preparation method of a walnut peptide powder, which effectively embodies a plurality of biological functional properties of the walnut peptide powder, reserves a plurality of nutritional components of walnuts. The polypeptide content in the walnut peptide powder is 60-80 percent, while the walnut peptide powder is light yellow or yellow-white color and has functions of anti-fatigue and antioxidation, etc. The invention comprises the following operation steps: crushing the walnut cakes before extracting the walnut protein, then carrying out enzymatic hydrolysis and centrifugation to the crude walnut protein to acquire the supernatant, dialyzing the supernatant and removing impurities and macromolecular compounds, and then concentrating the acquired dialysate, and at last vacuum drying to prepare the walnut peptide powder and packing into finished products.

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 relates to a preparation method of an efficient crude oil desalting demulsifier. The preparation method comprises the following specific steps: (1) performing isocyanic acid esterification modification on methoxy polyethylene glycol; (2) preparing glycidyl dimethyl alkylammonium chloride; (3) preparing quaternized carboxyalkyl chitosan; (4) modifying the methoxy polyethylene glycol and the quaternized carboxyalkyl chitosan for reaction to obtain a target product, namely, methoxy polyethylene glycol-grafted quaternized carboxyalkyl chitosan. By taking chitosan type natural macromolecular compounds as raw materials, the efficient crude oil desalting demulsifier has many advantages of wide availability, nature, nontoxicity, sustainability, high biocompatibility, degradability and the like. The prepared demulsifier is good in demulsifying and dehydration effect; meanwhile, molecules of the demulsifier contain a large quantity of carboxy alkyl groups and quaternary ammonium salt groups, so that the demulsifier is extremely high in combination capacity for negatively charged ions such as metal cations and naphthenic acid radicals, and particles with electronegativity on the surfaces, and can remove oil-soluble salt during dehumidification.

The present invention relates to a nano powder composite material and its preparation method. Firstly, the surface of nano particle is covered and modified by a macromolecular compound, a thin layer of macromolecule is adsorbed on the surface of nano particle, so that the agglomeration force between particles is reduced and the dispersity in the resin can be raised. The modified nano powder can be directly mixed with base resin according to acertain propertion, and make into the nano powder composite material proluct, also can be mixed with carrier resin firstly, and made into the nanometre powder filling mother granule, then the mother granule can be mixed with based resin according to a certain propertion so as to obtain the nano powder composite material product, in which the modified nano powder material content is 1-10 wt%, land its tensile strength, bending strength, impact strength and breaking extension rate are raised by above 30%.

A process for preparing the tobacco sheet by paper-making method includes preparing the concentrated liquid for the water-soluble components in tobacco, adding enzyme and/or microbe, biodegradating for generating micro-molecular compounds to be changed into flavouring substance in post-treatment, spraying it on substrate, drying, and cutting by defined sizes.

The invention relates to a gas conveying pipeline drag reducer used in gas and particularly natural gas conveying pipeline drag reduction and a preparation method thereof, relating to a macromolecular compound composition and the pipeline system technical field. The gas conveying pipeline drag reducer is characterized in that: the drag reducer consists of pyridine, secondary amine, formaldehyde or acetaldehyde, aromatic acid and deionized water; when total weight is counted as 100 percent, the compositions in percentage by weight are: 10 to 20 percent of the pyridine, 20.4 to 28.4 percent of the secondary amine, 7.6 to 8.4 percent of the formaldehyde or the acetaldehyde, 37 to 38.4 percent of the aromatic acid and 13 to 15 percent of the deionized water. The preparation method comprises the following steps that: the pyridine and the secondary amine in proportional quantities are added in a container and are mixed evenly; the formaldehyde or the acetaldehyde in proportional quantity is dripped to carry out reaction; the aromatic acid in proportional quantity is added, and the deionized water in proportional quantity is dripped so as to carry out reaction continuously; and finally, redundant water is removed, and a target product is obtained after purification. The gas conveying pipeline drag reducer has direct source of raw materials; moreover, the preparation method has simple process, convenient operation and moderate reaction conditions, and a product prepared by the method has excellent drag reduction effect.

The invention relates to hyaluronic acid which contains giant molecule hydrogel and is applied to injection or turbid liquor of salt thereof and a preparation method thereof; the turbid liquor of the invention is characterized in that hyaluronic acid or isosmotic solution of salt thereof serves as a carrier; water-insoluble macromolecular compound aqueous gel particle fully swelling in isosmotic solution is added. In the invention, the preparation of the turbid liquor has the steps as follows: preparing cross linking macromolecule compound or polymer particle so as to facilitate the compound or polymer particle to fully swelling in the isosmotic solution to form gel particles, then being mixed with hyaluronic acid or salting liquid dissolved in the isosmotic solution. The hyaluronic acid containing giant molecule hydrogel or the turbid liquor of salt thereof are applied to preparing injection for beauty care or medical treatment, which has the characteristics of easy injection, long-term local effect, good plasticity and fine biocompatibility; in local injection part, the invention is used as an isolating and lubricating pad which enables surrounding tissues to be fully repaired; the characteristic is even more pronounced in treating arthritis by bone joint cavity injection.

The invention belongs to the technical field of macromolecular compound combination and relates to a high-fluidity environmental protection halogen-free flame-retardant HIPS composite material, which is composed of the following components of: by weight, 29-50 parts of high impact polystyrene (HIPS), 15-35 parts of polyphenylene oxide (PPO), 3-12 parts of a flexibilizer, 5-20 parts of a phosphorus flame retardant, 1-7 parts of a flame-retardant synergistic agent, 0.2-1.0 part of a heat stabilizer, 0.2-0.8 part of an antioxidant and 0.5-1.2 parts of a processing aid. The invention also discloses a preparation method of the HIPS composite material. The composite material provided by the invention is a halogen-free flame retardation HIPS/PPO alloy with high fluidity and excellent mechanical properties.

An acid liquid leakage sensor quickly detecting liquid leakage from a device, such as a battery or the like, containing an acid liquid includes a first conductive member, a second conductive member, and an electrically insulating material which establishes an electrically insulating state between these first and second conductive members. The electrically insulating material includes a macromolecular compound having a basic functional group, and an electrical insulation characteristic or high resistance characteristic that decreases upon reaction with an acid liquid. It is possible to detect leakage of acid liquid, such as battery fluid, by detecting the change of conductive state between the first conductive member and the second conductive member which accompanies a decrease of the electrical insulation characteristic or high resistance characteristic of the electrically insulating material, when acid liquid leaks out and drips down the electrically insulating material.

The invention discloses an antisepsis and antidrag chemical additive of natural gas pipeline and a preparation method thereof, and relates to the technical field of anticorrosion of common metal material, composition of macromolecular compound and pipeline system. Dodecyl trimethoxy silane is prepared by trimethoxy silane and Alpha-laurylene of which the mole ratio is 1:1-1.3:1 and a platinum catalyst under catalyzing, wherein the mole ratio of the platinum catalyst to Alpha-laurylene is 10*10-6:1-12*10-6:1; and the methyltrimethoxy silane and the synthetic dodecyl trimethoxy silane are successively added to a solvent normal hexane with the mole ratio as 0:1-0.1:1 and mixed and configured into a solution of 40-60wt%. In the invention, the pipe wall has strong adsorption force, functions are multiple, the process is simple, and the effect is preferable.

The invention discloses a crystallization controllable thermoplastic polyurethane material and a preparation method of the crystallization controllable thermoplastic polyurethane material. The thermoplastic polyurethane material comprises and is prepared from the following components: 1) a diisocyanate compound; 2) a hydroxyl and/or amido end capped macromolecular compound; 3) a diamine or diol cyclodextrin derivative; 4) a chain extender. The types and the use amounts of a main chain extender and an auxiliary chain extender in the chain extender are controlled, meanwhile, the cyclodextrin derivative is introduced, so that the crystallization characteristic of the thermoplastic polyurethane material is controlled, the controllable degree of crystallinity and the improved viscosity temperature sensitivity are obtained, and the shrinkage percentage of the material is also changed correspondingly. The obtained thermoplastic polyurethane material can be used in a rapid forming method in the fusing processing, like a fused deposition rapid forming method or a selective laser sintering method.

The invention provides a starch-based thermoplastic biodegradable material and a preparation method thereof. The starch-based thermoplastic biodegradable material consists of the following components in parts by weight: 60 to 80 parts of plant starch, 1 to 10 parts of modified plasticizing assistant and 1 to 25 parts of degradable macromolecular compound; the macromolecules of the plant starch are catalyzed (esterified) and modified in a mixing device by using the modified plasticizing assistant so as to reduce the molecular structure; then the sufficiently modified starch micromolecules are re-combined, namely grafted; and the modified and grafted polymer is mixed, plasticized, polymerized and extruded by a double-screw extruder so as to obtain the starch-based thermoplastic biodegradable material. The starch-based thermoplastic biodegradable material of the invention can be applied to disposable tableware non-woven fabric, industrial/agricultural film and children toys or packing material; and the product is bright and soft, resists water and oil and has perfect weather resistance and high thermoforming performance.

The invention discloses a high-temperature resistant non-sticking coating, and belongs to the field of organic macromolecular compounds. The non-sticking coating contains 50 to 80 weight parts of organic silicon modified saturated polyester, 10 to 30 weight parts of high-temperature resistant pigment and filler and 5 to 10 weight parts of high-boiling solvent; the organic silicon modified saturated polyester is obtained by reaction of polyhydroxy branched saturated polyester and organic silicon resin intermediate in an amount which is 0.3 to 1.0 times weight of the polyester, wherein the hydroxyl value of the polyester is 120 to 200mgKOH/g, and the weight-average molecular weight is 2,000 to 6,000; and the weight-average molecular weight of the organic silicon resin intermediate is 800 to 2,000, the alkoxy content is 2.5 to 15 percent, and the hydroxyl content is 3 to 20 percent. The high-temperature resistant non-sticking coating has good heat resistance, non-sticking performance, good metal adhesion and low heavy metal content and harmful substance content, accords with restriction of hazardous substances (RoHS) instructions and standards, and is an environmentally-friendly product.

The invention discloses a novel pressure-resistant cabin body made from carbon fiber macromolecular composite materials. The pressure-resistant cabin body comprises two parts of a cylindric cabin body and end covers 7 positioned at two ends of the cabin body. The pressure-resistant cabin body is characterized in that the cabin body consists of an inner protection layer 1, a carbon fiber barrel body 2, a leak-proof layer 3 and an outer protection layer 4 sequentially from inside to outside, the two ends of the cabin body are in sealed connection with the end covers 7 through connecting fittings 5 and sealing rings 6, and the cabin body and the connecting fittings 5 are in glued joint. The invention further discloses a manufacturing technology of the novel pressure-resistant cabin body made from carbon fiber macromolecular compound materials. The manufacturing technology comprises the following steps of preparation for a mold, compounding of glue stocks, winding of the carbon fiber barrel body, curing of the carbon fiber barrel body, glued joint of the carbon fiber barrel body and the connecting fittings, processing of the leak-proof layer, the processing of the protection layers and the assembling of the end covers. The pressure-resistant cabin body made from carbon fiber macromolecular compound materials can be used in adverse environment with high temperature, low temperature and high pressure in the deep sea, and is high in pressure-resistant intensity, and the problems of leaking and sealing of compound materials under high pressure state are solved.

The invention discloses applications of multi-component super-molecule hydrogel as a stress response material and a self-healing material. The hydrogel consists of a component with a strong hydrogen bond, a component with a weak hydrogen bond and water, wherein the component with the strong hydrogen bond is one or more of a carbon oxide nano tube, graphene oxide, carboxylic ferroferric oxide nano particles, carboxylic silver nano particles, carboxylic quantum dots, polyacrylic acid, polypropylene glycol, polyurethane, polyamide and poly(sodium-p-styrenesulfonate); and the component with the weak hydrogen bond is a small molecule compound or a macromolecular compound. The hydrogel provided by the invention simultaneously has multiple response and self-healing functions, and environment-dependent reversible adhesion behavior, and can be importantly applied to the fields of sensors, actuators, drug controlled release, self-healing materials, photo-thermal therapy, movable smart adhesion agents and artificial joints.

The invention discloses a nanometer medicine particle. The nanometer medicine particle comprises a hydrophobic polymer, a single-layer lipid molecule, an amphipathy macromolecular compound, at least one chemotherapy drug attached to the hydrophobic polymer, and at least one near-infrared photothermal conversion agent, wherein the hydrophobic polymer, the at least one chemotherapy drug attached to the hydrophobic polymer, and the at least one near-infrared photothermal conversion agent form a hydrophobic core; the single-layer lipid molecule surrounds the surface of the hydrophobic core to form an intermediate layer; and the amphipathy macromolecular compound intersperses in the intermediate layer to form a shell. The invention also provides a preparation method of the nanometer medicine particle. The nanometer medicine particle can realize the combined treatment of thermotherapy and chemotherapy and has high biocompatibility; and the preparation method is simple, convenient and easy to carry out.

The invention disclose a manufacturing method of stainable alginate fibers, which comprises the following steps of: adding a water-soluble dendrimers compound into a alginate fiber spinning solution, and solidifying, drafting, water washing and post-processing by adopting wet spinning equipment and technology to obtain the alginate fibers with excellent staining property, wherein the content of dendrimers in the alginate fibers is 1-10 percent. Compared with a traditional alginate fiber production technology, the invention has the advantages that the prepared alginate fibers can be applied to direct dyes and active dyes under a salt-free condition to realize staining and have higher dye uptake rate which generally reaches above 80 percent and is 10-15 times that of the alginate fibers produced by the traditional technology. In addition, the alginate fibers prepared by the invention has better color fastness and particularly excellent wet-processing fastness which reaches above grade 4.

The invention discloses a preparation method of organosilicon thermoplastic polyurethane. The preparation method comprises the following steps: I, mixing macromolecular organosilicon containing reactive hydrogen, other macromolecular compounds containing reactive hydrogen and diisocyanate according to a certain mode at the temperature of 50-90 DEG C, and reacting to obtain an isocyanate-terminated prepolymer; and II, uniformly mixing the prepolymer obtained in the step I and a micromolecular chain extender, pouring the mixture and curing. The organosilicon thermoplastic polyurethane prepared by the method has good mechanical properties, and also has excellent hydrophobicity and low temperature resistance.

Addition of polyvinylpyrrolidone and a water-soluble anionic macromolecular compound to an aqueous suspension of a hardly soluble drug allows to provide an aqueous suspension in which aggregation of drug particles, formation of macro crystals from suspended particles and formation of secondary particles from deposited particles are prevented, and adhesion and adsorption to containers made of plastics, e.g., polypropylene or polyethylene, are avoided. As it has a good redispersibility, the aqueous suspension is useful as eye drops, nasal drops, ear drops, injections, oral preparations, liniments and lotions.

The invention provides a treatment process for manufacturing tobacco cut stems by a tobacco stem, which comprises processes of stem washing, stem storing, cut stems cutting and cut stems swelling. The treatment process is characterized by comprising the following steps: carrying out enzymolysis on a tobacco stem raw material before the stem is washed; further washing the tobacco stem after the enzymolysis; filtering and concentrating stem washing liquid; adding carbonyl diamide and monoammonium phosphate into the stem washing liquid during the concentration to ensure that Maillard reaction is performed among the carbonyl diamide and the monoammonium phosphate, and reducing sugar and other micromolecular compounds; and finally, directly adding the concentrated feed liquid into swelled cut stems, or directly applying the filtered stem washing liquid to tobacco sheet manufacture by a rolling method. In the process, lignin and other compounds are subjected to enzymolysis through pretreatment by biological enzyme before the cut stems are prepared, so that macromolecular compounds which are not in favor of sensory quality in the tobacco stem are transformed; the chemical substances which are beneficial to the tobacco are extracted as much as possible by further stem washing and are added into the tobacco cut stems after the swelling process, so that the inherent original tobacco fragrance in the tobacco stem is retained as much as possible; and the concentrated liquid and extra feed liquid are added into the tobacco cut stems after the swelling process, so that fragrance loss in the swelling process is avoided.