98results about "Shellac coatings" patented technology

Methods for microfabricating composite materials and composite materials prepared there from are described herein. The sacrificial material can be etched or patterned to create a two-dimensional and/or three-dimensional sacrificial material structure. The resulting sacrificial material structure can be embedded in one or more embedding materials. The sacrificial material(s) are materials whose solubility can be altered by application of a stimulus typically pH, and/or temperature, light, pH, pressure, presence of absence of ions, and combinations thereof. The embedding materials can contain one or more additives that modify one or more properties of the embedding materials, such as degradation properties, porosity, mechanical properties, viscosity, conductive properties, and combinations thereof. The composite materials can be used in tissue engineering, drug screening, toxin detection, drug delivery, filtrations, bioseparations, and as microfluidic devices for fluid mixing and structural repair.

The present invention relates to formulations for use as enteric coatings. More particularly, the present invention relates to a formulation comprising a dry blend of food grade ingredients that can be readily dispersed in water. This dispersion exhibits low viscosity and can easily be coated onto solid dosage forms through spraying and the like to provide an enteric coating on the solid dosage form.

The present invention provides a powder paint excellent in productivity and cost, because the powder paints that are not adhered to the substrate can recovered and reused. And in case of using the powder paint of the present invention, coating efficiency is high and fine textured coated films excellent in attractiveness of appearance and water resistance can be obtained, because the base paint powder and the pigment particle thereof hardly separate. The powder paints of the present invention are characterized in that the pigment particles are bound to the base paint powders via shellac. The powder paints of the present invention not only allows uniform and firm binding of pigment particles to base paint powders by the action of shellac, but also provides the resulting coated films with excellent attractiveness of appearance.

The invention discloses a small-area damage repairing liquid and repairing process for oil paint surface of wood facing. The repairing process comprises the following steps: dripping 502 glue at a damage part of the wood paint surface and the peripheral area that is 5-10 times of the damage area, scattering wood powders on the 502 glue after the glue penetrates, leveling the convex part by a knife, repeating the steps for 4-5 times until the original damage part and the peripheral area thereof are level; coating the 502 glue again, polishing by 180# sand paper until no pore is existent, and then leveling by 320# sand paper; dipping the repairing liquid by white cloth, coating the repairing liquid on the whole area to be repaired, and then toning to be the color which is the same as the ground color of the original wood paint surface by pigments and the repairing liquid, dipping by the while cloth, lightly coating on the area to be repaired, then toning to be the color which is the same as the grain decoration of the original wood paint surface by pigments and the repairing liquid, and repairing the area grains of the ground color; and selecting a finish paint spray with the corresponding luminosity according to the luminosity of the original wood paint surface and then spraying the finish paint spray at the repairing area. The paint surface repaired by the repairing process with the repairing liquid is even and flat, and is harmonious in color.

The invention relates to a composite varnish and a preparation method thereof. The composite varnish comprises raw material varnishes, uniformly-dispersed nano silver particles, nano titanium dioxide particles and quantum dots, wherein the mass percentage of the nano silver particles in the composite varnish is 0.01%-0.05%, the mass percentage of the nano titanium dioxide particles in the composite varnish is 0.05%-0.5%, and the content of the quantum dots in the composite varnish is 0.01-0.1 micro mol/L. The preparation method comprises the following step of: a. in-situ reduction of nano silver in the raw material varnishes: adding a silver salt solution in the raw material varnishes according to a volume ratio (the silver salt solution to the raw material varnishes) of 1: 5 to 1: 20, and stirring till the mixture is even. The composite varnish is used for carrying out a film-coating treatment on the surface of a medical appliance, improving the bacteria resistance of the surface of the medical appliance, further, endowing the surface of the medical appliance with pollution detectability, and thus, a novel idea and a novel direction are provided for the development and the application of antimicrobial medical appliances.

The invention provides a fingerprint-resistant transparent coating layer and a preparation method thereof. The preparation method comprises the following steps: under the condition of a room temperature, sequentially adding acrylic resin, a catalyst, a leveling agent, an adhesion promoter, a curing agent, a diluent and perfluoropolyether into a material mixing pot, and carrying out stirring so asto obtain a fingerprint-resistant transparent resin coating material; wiping a to-be-coated substrate with alcohol and acetone through a non-woven fabric so as to remove oil stains in sequence, and spraying or wiping the fingerprint-resistant transparent resin coating material onto the substrate, or dip-coating the substrate in the fingerprint-resistant transparent resin coating material to form afilm, wherein the substrate is glass, polished stainless steel or bright plastic; and putting a coated substrate into a drying oven at 80-120 DEG C, and carrying out curing for 1-2 hours so as to obtain the fingerprint-resistant transparent resin coating layer on the substrate. The hydrophobic and oleophylic fingerprint-resistant transparent coating layer prepared by using the preparation methodprovided by the invention has a deionized water contact angle of 95-100 degrees and a tetradecane contact angle of 10-15 degrees, and belongs to a hydrophobic and oleophylic fingerprint-resistant coating layer.

Embodiments of the invention disclose a shellac for increasing heat resistance of a varnish. The main components of the shellac comprise, by weight, 40-50% of shellac, 3-7% of dry vegetable oil, 5-9% of glycerol, 10-20% of a rosin resin, 5-10% of pentaerythritol, and 10-15% of a modification promoter. Embodiments of the present invention further disclose a shellac modification method for increasing heat resistance of a varnish. The modification method comprises: stirring shellac and a rosin resin, dissolving into a diluent, taking a modification promoter and adding to the obtained solution, and heating until completely dissolving, wherein the heating temperature is 50-80 DEG C; adding dry vegetable oil, pentaerythritol and glycerol to the obtained mixed solution, stirring while heating to a temperature of 40-82 DEG C, and carrying out a reaction for 1-4 h to obtain a modified shellac solution; and preparing the modified shellac solution into the shellac varnish finished product. According to the present invention, the dry heat resistance and the wet-heat resistance of the shellac paint film can further be substantially increased, and no harm on the environment and the human body during the construction and use process is generated.

The invention discloses a medical quick-drying water-based antirust paint and a preparation method thereof. The paint is prepared from an acrylic acid emulsion, a shellac copolymer emulsion, zinc oxide, ethanol, phenol, sodium metaborate, light calcium carbonate, barium sulfate, iron oxide red and talcum powder. When being used for resisting rust and corrosion for medical devices, the paint has the deoxidization effect. The coated film appears iron red and is smooth, the viscosity is 60-80s, and the hardness is 3-5. The adhesive force is first-grade; the paint has high water resistance, and does not have abnormity after being immersed in water; the impact strength is 500-700 N/cm; the paint has high salt tolerance, and can not discolor or blister after being immersed in a 3% sodium chloride water solution at 25 DEG C for 10-30 days; the surface drying time is 10-30 minutes; and the solid drying time is 2-6 hours. The paint has the advantages of simple preparation method and simple and accessible raw materials, and can be widely produced and continuously substituted for the existing materials.

The invention discloses a formaldehyde-absorption flame-retardant automobile interior trim paint. The formaldehyde-adsorption flame-retardant automobile interior trim paint comprises 10 to 15 parts of microcrystalline wax, 4 to 8 parts of silicone oil, 4 to 10 parts of shellac, 8 to 15 parts of fatty alcohol polyoxyethylene ether, 1 to 3 parts of acrylonitrile, 4 to 8 parts of an emulsifier, 0.5 to 0.15 part of a mildew inhibitor, 25 to 45 parts of ethanol, 15 to 20 parts of water, 1 to 3 parts of 2-hydroxy-4-n-octyloxybenzophenone, 5 to 8 parts of silicone-containing polyethylene vinyl acetate, 1 to 3 parts of talcum powder, and 1 to 5 parts of a fire retardant. The formaldehyde-absorption flame-retardant automobile interior trim paint is capable of absorbing ultraviolet light and formaldehyde gas, protecting automobile interior trim colour, prolonging automobile interior trim service life, and realizing flame prevention.

The present invention relates to a biodegradable sheet comprising at least two polymer layers, wherein a first polymer layer comprises a mixture of at least two different biodegradable polymers selected from the group consisting of PLA, PCL, PBS and PBSA; and wherein a second polymer layer comprises a biodegradable polymer selected from the group consisting of PBS, PBSA, a mixture of PLA and PBS, and a mixture of PLA and PBSA.

The invention relates to a food-contactable super-hydrophobic coating and a preparation method thereof, and belongs to the technical field of preparation of super-hydrophobic materials, and the super-hydrophobic coating mainly comprises the following raw materials: stearic acid, shellac and ethyl cellulose. The preparation method comprises the following steps: stirring and dissolving the shellac in absolute ethyl alcohol, adding the ethyl cellulose and the stearic acid to prepare a mixed solution, dipping a coating base material in the mixed solution, and forming the coating at a certain temperature. The raw materials used for preparing the super-hydrophobic coating are non-toxic and pollution-free, the super-hydrophobic coating can be used as a material for food contact, the process is simple, the binding property of the coating and a base material is good, the super-hydrophobic coating can be prepared on various base materials to endow the base materials with super-hydrophobicity, and the effect of preventing liquid food adhesion is achieved.

The invention discloses a heat-insulating self-cleaning architectural coating, which is characterized by being prepared from the following raw materials in parts by weight: 30-40 parts of a bisphenol epoxy resin, 20-30 parts of a nano silicon resin, 3-4 parts of 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate, 0.5-1.0 part of aluminium oxide, 1-2 parts of glyceryl tristearate, 3-5 parts of polytetrafluoroethylene powder, 1-2 parts of shell-lac, 2-3 parts of polyethylene wax, 3-4 parts of fly ash floating beads, 0.3-0.4 part of azodiisobutyronitrile, 0.2-0.4 part of polyether modified siloxane, 1-2 parts of zinc naphthenate, 1-3 parts of polymerized silica, 6-9 parts of self-cleaning slurry, 1-2 parts of aminopropyltriethoxysilane, 10-13 parts of ethyl acetate, and 5-7 parts of ethylene glycol. The coating disclosed by the invention is used for solving the problem that a coat is poor in fouling resistance, easily polluted, and not ideal enough in heat insulation effect. The added fly ash floating beads are good in heat insulation effect and low in cost, and the added self-cleaning slurry has a good self-cleaning effect; the coating disclosed by the invention is high in adhesion and good in abrasion resistance, and has excellent heat insulation and self-cleaning functions; and the coating is low in production cost, simple in operation and wide in application range.

The invention relates to the technical field of laser surface modification, in particular to a laser quenching light-absorbing coating and a preparation method thereof, and the laser quenching light-absorbing coating is prepared by mixing a solvent and aggregate; the solvent comprises the following components in parts by mass: 5-12 parts of a binder; 0.2-0.8 part of an anti-settling agent; 0.02-0.60 part of a thickening agent; 0.10-1.60 part of a wetting agent; 0.1-3.0 part of a leveling aid; 4.0-16.0 parts of a diluent; 0.02-0.60 part of a dispersing agent; 10-60 parts of anhydrous alcohol; 40-100 parts of distilled water. The coating can improve the laser absorptivity of a metal material, avoids local burn of a workpiece, guarantees the machining quality of the workpiece, and improves the hardness of the workpiece.

There are provided an aqueous-shellac coating agent comprising shellac, a basic amino acid and/or a basic phosphate, as well as a production process therefor; a coated food and a coated drug that have been coated with such a coating agent; a glazing. composition for oil-based confectionary which is in a liquid form and comprises an aqueous shellac solution (A) containing shellac, a basic amino acid and/or a basic phosphate dissolved in water, a thickener (B), and/or a sugar (C); a process for glazing oil-based confectionary in which this glazing composition is applied to oil-based confectionary to be glazed, thereby generating a glaze; and glazed oil-based confectionary produced using this process for glazing oil based confectionary;

The invention discloses a lacquering method for a wooden pencil. The method includes the following operation steps: (1) using 800# abrasive paper to perform polishing treatment on the surface of a moulded wooden pencil, and then spraying a modification solution on the surface; (2) brushing shellac varnish on the surface of the wooden pencil subjected to treatment by step (1); and (3) 2-3h later after brushing of the shellac varnish, brushing colored finish paint on the surface of the wooden pencil evenly, and conducting drying to obtain a finished product. The lacquering method for the woodenpencil provided by the invention has the advantages of simple operation, low cost, green and environmental protection, the prepared pencil has the characteristics of smooth surface, no crack, uniformcolor and difficult decolorization, and the quality of the pencil is greatly enhanced.

The invention discloses a light absorption coating for laser quenching, and a preparation method thereof, and belongs to the technical field of laser quenching. The light absorption coating for laserquenching comprises 80-100 parts of silica, 150-200 parts of industrial alcohol, 10-20 parts of a binder, 15-25 parts of metal oxide, 12-18 parts of a thickener and 3-8 parts of rosin. The preparationmethod of the light absorption coating for laser quenching comprises the following steps: S1, pouring 80-100 parts of silica, 10-20 parts of the binder, 15-25 parts of metal oxide, 12-18 parts of thethickener and 3-8 parts of rosin into a ball mill, and carrying out ball milling; and S2, pouring the ball-milled raw materials obtained in step S1 into 150-200 parts of industrial alcohol, and uniformly stirring the ball-milled raw materials and the industrial alcohol to obtain the light absorption coating. The light absorption coating greatly improves the hardness of workpieces to avoid local burns of the workpieces, and ball milling of the light absorption coating by using the ball mill greatly improves the performances of the light absorption coating and makes the particle size of the light absorption coating uniform and fine. The light absorption coating and the preparation method have the advantages of low cost and no pollution to the environment.

The invention discloses a composite coating special for a lithium battery and a preparation method thereof. The composite coating special for the lithium battery is prepared from, by weight, 20-30 parts of an adhesive, 1-3 parts of a stabilizer, 5-7 parts of an anticorrosive agent, 1-3 parts of seconary alkane sulphonate sodium, 1-2 parts of polyvinyl alcohol, 1-3 parts of bentonite, 1-3 parts ofglucan, 10-15 parts of silicon dioxide soil, 5-10 parts of solvents and 3-5 parts of activated carbon. The composite coating special for the lithium battery is higher in safety performance, good in thermal stability, high in mechanical strength and good in adhesive force, the implementation mode is simple, and the coating can be used in spray-coating, brush-coating and other modes.