4110results about How to "Non-toxic" patented technology

Disclosed are compounds, compositions and methods for systemic and local delivery of biologically active molecules.

The invention provides a functional oil microencapsulation and a manufacturing method thereof and relates to a microencapsulation, and the functional oil microencapsulation has the advantages of high stability and immobilized proteinaceous pellicle. The oil microencapsulation is prepared from the following raw materials: functional oil, plant oil, an antioxidant, aqueous-phase main-wall materials, aqueous-phase auxiliary-wall materials, bio-enzyme protein and water. The plant oil serving as a carrier is mixed with the functional oil, then the antioxidant is added, and then the materials are heated and dissolved in water bath, thus obtaining an oil-phase core material solution; the aqueous-phase main-wall materials and the aqueous-phase auxiliary-wall materials are added into deionized water, and then the materials are heated and dissolved in water bath, thus obtaining an aqueous-phase wall material solution; the oil-phase core material solution is added in the aqueous-phase wall material solution, the mixture is sheared and emulsified by a shearing machine, and then is homogenized by a homogenizer, thus obtaining a nanometer-level solution with uniform oil drop diameter; and bio-enzyme is added into the nanometer-level solution, the mixture is placed in hot-water bath for heating and stirring reaction, temperature is raised after the reaction so as to enable the bio-enzyme to be inactivated, and drying is carried out, thus obtaining the functional oil microencapsulation.

This invention provides novel nanofiber enhanced surface area substrates and structures comprising such substrates for use in various medical devices, as well as methods and uses for such substrates and medical devices. In one particular embodiment, a method of administering a composition to a patient is disclosed which comprises providing a composition-eluting device, said composition-eluting device comprising at least a first surface and a plurality of nanostructures attached to the first surface, and introducing the composition-eluting device into the body of the patient.

This invention relates to a method for preparing heat-insulating and energy-saving lightweight aerated wall bricks, which are prepared from aggregate, gelation agent, aeration agent, heat-insulating material and water. The aggregate is composed of slag or river sand, glass microbeads, floating beads, closed perlite, and expanded perlite. The gelation agent is composed of cement, gypsum and lime. The aeration agent is Al powder. The fiber heat-insulating material is composed of high-Al powder, tripolite, ceramic fibers, mineral wool, sepiolite, expanded vermiculite, glass cotton and palygorskite. The wall bricks have such advantages as high compressive strength, low heat conductivity, high heat-insulating performance, high fireproof and damp-proof performances, rapid and convenient construction, and no need for composite heat-insulating layer.

The invention discloses a method for preparing grapheme dispersion liquid. The method comprises the following steps: (1) uniformly mixing grapheme and a dispersant in a solvent to obtain a uniformly mixed solution; and (2) dispersing the uniformly mixed solution by a dispersing device for 0.5-24 hours to obtain the grapheme dispersion liquid, wherein the rotation speeds of a high shearing dispersion head and a colloid grinding disc are regulated to be within 100-14000rpm, the rotation speed of an electric mixer is at 10-2000rpm, an energy-concentration ultrasonic probe is additionally arranged, the ultrasonic frequency is within 20-80kHz and the dispersion temperature is 0-20 DEG C after being regulated by a cooling system. According to the method for preparing the grapheme dispersion liquid, the dispersion time is saved and the production efficiency is improved due to the adoption of multiple dispersion methods and synergic action, the cost is low, the operation is easy, and the method is nontoxic, free of pollution and beneficial for batch production, has high dispersion stability and a bright prospect of large-scale industrial application.

This invention discloses a compound antibacterial silk nanometer fibrous material, accounting for weight its component proportion are: Sericin protein 58-90%; chitosan or chitin 0-40%, antibacterial agent 0-5%, electric conduction 1-4%,crossing linking 1-4%. Its process is: dissolve the pure sericin protein, antibiotics separately in polar solvent, join electric conduction medicinal preparation and crosslinking agent, using the static electricity spinning technique, making the average aperture for 0.5-5.0 micron, factor of porosity 60-90%, the mean diameter is 40-100nm and the material is nanometer textile fiber adhesive-bonded membrane. This invention has good organization compatibility with human body, Antibiotics and sericin insoluble is in homogeneous solvent, massive holes among the nanometer textile fiber adhesive-bonded membrane, which has outstanding aqueous percolation permeability, antibacterial agent distributes evenly in the nanometer textile fiber, and the medicine release effect is perfect, so it can be a kind of ideal resist bacteria injured medical material.

An applique for application to a body part, which comprises a thin flexible film having an array of decorative stones or gems adhesively secured on the upper surface and wherein the bottom surface of said applique has a self-adhesive layer.

A halogen-free expansion flame-retardant epoxy resin combination mainly includes the following components (in terms of weight portion) 45 to 85 portions of epoxy resin, 4 to 40 portions of ammonium polyphosphate, 2 to 30 portions of melamine or the derivatives, 1 to 20 portions of phosphonate ester, 1 to 13 portions of solidified agent, 0.1 to 8 portions of diluting agent and 0.1 to 4 portions of filling agent. The combination with no halogen, strong moisture resistance and good flame retardance can reach V-0 standard in UL-94; therefore, the combination is used as the substrate of manufacturing spare parts and fittings in the electronic and electric field.

The invention discloses a synthesis method of a polycarboxylic acid high-performance water reducing agent of a star-like structure, belonging to the field of a water reducing agent. According to the synthesis method, polybasic alcohol, (methyl) acrylic acid, a polyethylene glycol compound and the like are used as esterification raw materials, and the polycarboxylic acid high-performance water reducing agent of the star-like structure is prepared through a sequential esterification and polymerization method, i.e., the (methyl) acrylic acid and the polybasic alcohol are used as reactants, a star-like polymerizable active end is prepared through esterification reaction under the action of a catalyst, and then the polycarboxylic acid high-performance water reducing agent is prepared from the star-like polymerizable active end and esterification macromolecule, a molecular weight regulator and an unsaturated carboxylic acid monomer under the action of an initiator through free radical polymerization reaction. The synthesis method has the advantages of simplicity, easiness in control, high polymerization degree, low cost, no pollution, capability of realizing the polycarboxylic acid high-performance water reducing agent of the star-like structure connected with a plurality of polycarboxylic acid molecules, and more superior cement paste fluidity and holding capacity, good cement adaptability and concrete application performance compared with the conventional linear and comb-shaped polycarboxylic acid water reducing agent in the case of normal and low added amount.