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464 results about "Shellac" patented technology

Shellac is a resin secreted by the female lac bug, on trees in the forests of India and Thailand. It is processed and sold as dry flakes (pictured) and dissolved in alcohol to make liquid shellac, which is used as a brush-on colorant, food glaze and wood finish. Shellac functions as a tough natural primer, sanding sealant, tannin-blocker, odour-blocker, stain, and high-gloss varnish. Shellac was once used in electrical applications as it possesses good insulation qualities and it seals out moisture. Phonograph and 78 rpm gramophone records were made of it until they were replaced by vinyl long-playing records from the 1950s onwards.

Very thin dielectrics for high permittivity and very low leakage capacitors and energy storing devices

Methods are disclosed for creating extremely high permittivity dielectric materials for use in capacitors and energy storage devices. High permittivity materials suspended in an organic non-conductive media matrix with enhanced properties and methods for making the same are disclosed. Organic polymers, shellac, silicone oil, and / or zein formulations are utilized to produce thin film low conductivity dielectric coatings. Transition metal salts as salt or oxide matrices are formed at low temperatures utilizing mild reducing agents.
Owner:CARVER SCI INC

High permittivity low leakage capacitor and energy storing device

A method is provided for making a high permittivity dielectric material for use in capacitors. Several high permittivity materials in an organic nonconductive media with enhanced properties and methods for making the same are disclosed. A general method for the formation of thin films of some particular dielectric material is disclosed, wherein the use of organic polymers, shellac, silicone oil, and / or zein formulations are utilized to produce low conductivity dielectric coatings. Additionally, a method whereby the formation of certain transition metal salts as salt or oxide matrices is demonstrated at low temperatures utilizing mild reducing agents. Further, a circuit structure and associated method of operation for the recovery and regeneration of the leakage current from the long-term storage capacitors is provided in order to enhance the manufacturing yield and utility performance of such devices.
Owner:CARVER SCI INC

Special composite emulsifier for wax emulsion, and preparation method thereof

The present invention provides a special composite emulsifier for a wax emulsion. The special composite emulsifier is characterized by comprising, by weight, 45-50 parts of peregal, 20-25 parts of stearic acid, and 25-30 parts of fatty alcohol polyoxyethylene ether. The process comprises: sequentially adding peregal, stearic acid and fatty alcohol polyoxyethylene ether to a reaction kettle, heating to achieve a temperature of 60-70 DEG C until completely melting the material, and stirring to achieve a uniform state so as to discharge the material. According to the present invention, during preparation of various wax emulsions, the emulsifier having the amount of 8-10% of the mass of wax and the wax are co-melted and then uniformly stirred, and hot water with a temperature of 90-95 DEG C is added until the solid content is 50% so as to obtain the corresponding wax emulsion, or deionized water can be added according to requirements so as to adjust the wax emulsion content to 5-50% and the like. The special composite emulsifier can be provided for emulsifying paraffin wax, polyethylene wax, palm wax, montan wax, beeswax, rice bran wax, candelilla wax, shellac wax, and other types of waxes, such that material preparation of wax emulsion manufacturers is simply, and the prepared emulsion is translucent, has blue light , and has characteristics of good stability and small particle size; and the emulsifying system is consistent, such that various wax emulsions can be compounded according to any ratios without generation of phenomena such as precipitation, flocculation, layering and the like, and the special composite emulsifier can be conveniently used in various fields.
Owner:山东力厚轻工新材料有限公司

Pretreatment method of surface of decorative wood

The invention discloses a pretreatment method of a surface of decorative wood. The method comprises steps as follows: drying the wood until the moisture content ranges from 8%-10%, and then grinding and shaving the wood; cleaning the wood with a sodium carbonate solution with the concentration ranging from 5% to 6%, then scrubbing the wood clean, and brushing cleaned parts with shellac varnish for 12 times after the surface is clean; applying a bleaching agent to the surface of the wood for bleaching treatment, then wiping the surface of the wood clean with wet gauze, smearing a layer of acetic acid with the concentration of 1.2%, and then scrubbing the wood clean; preparing a dyeing agent for dyeing, wherein the dyeing agent comprises components in parts by weight as follows: 6 parts of alcohol solution dye, 70 parts of alcohol and 24 parts of the shellac varnish, and the components are evenly mixed and sprayed. The method is simple, and the treated surface of the wood is smooth and uniform in color.
Owner:QINGDAO SHOUSHENG IND

Method for performing antique treatment on leather surface

The invention relates to a method for performing antique treatment on a leather surface. Mixed polish is utilized to treat the leather surface and comprises shellac, rosin and alcohol in a weight ratio of 5-25:5-15:100, preferably 20:5:100. The method comprises the following steps of: a, polishing the surface of animal skin blank into a plush shape; b, expanding the animal skin blank, spraying the mixed polish on the animal skin blank, and then performing air drying; c, moving the air-dried animal skin blank to a drying room and roasting for 2 to 3h at the temperature of between 42 and 47 DEG C; d, coloring effect under colors on the animal skin blank at normal temperature; e, moving the colored animal skin blank to the drying room for drying; f, treating cracks of the animal skin blank; g, coloring effect colors on the animal skin blank by using a mixed pigment, and then spraying a layer of the mixed polish on the animal skin blank uniformly; h, moving the animal skin blank to the drying room for drying; i, pulling the cracks of the animal skin blank out, and polishing and burnishing; k, moving the burnished animal skin blank to the drying room and roasting for 5 to 7h at the temperature of between 30 and 40 DEG C; and j, cooling the product, coating leather protective wax on the product to obtain the finished product.
Owner:廖顺南

Metal oxide ultraviolet detector and production method thereof

The invention discloses a metal oxide ultraviolet detector and a production method thereof, belongs to the field of optical detectors and solves the problems that due to structure and material reasons of a detection layer, the prior metal oxide ultraviolet detector has high requirement on the production environment, is low in sensitivity and is high in production cost. The metal oxide ultraviolet detector comprises a quartz glass substrate, interdigital electrodes, metal oxide nano-particles and a shellac mixed layer. The production method includes: mixing metal oxide precursor and shellac into mixed solution, coating the quartz glass substrate which the interdigital electrodes are sputtered to, through the mixed solution, after heating and pretreatment, subjecting thin film to solvent annealing with high-concentration ethanol vapor, allowing the shellac in the mixed thin film to rise to the top of the film, subjecting metal elements in the mixed thin film and hydroxyl in the shellac to coordination to convert the metal oxide precursor into metal oxide nano-particles at low temperature, and forming a pointed cone structure by natural stacking; finally, according to the unique thermal polymerization characteristic of the shellac, continuously heating the shellac to solidification, thereby packaging the detection layer of the detector in situ.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA

Shellac based sprayable sunscreen

ActiveUS20140348757A1Excellent film forming polymerReadily solubleBiocideCosmetic preparationsShellacNuclear chemistry
A sprayable alcohol-based sunscreen comprises an alcohol carrier, at least one sunscreen additive, and a film forming polymer comprising shellac.
Owner:MANTROSE HAEUSER

Film-forming product used for beautifying teeth

The invention provides a film-forming product used for beautifying teeth. The film-forming product comprises the following components in percentage by weight: 60%-85% of a solvent, 0%-5% of water, 10%-30% of a film-forming agent, 2%-5% of a humectant and 0.1%-2.0% of a covering, whitening and brightening substance, wherein the film-forming agent is a mixture of polymer and shell-lac, and the polymer is one or more of Eudragit L100-55, Eudragit S100, Eudragit L100 or Eudragit L100-55, Eudragit S100, Eudragit L100. The product disclosed by the invention can quickly form a film on a dried tooth surface, and the film is tightly adhered with the tooth surface, so that the tooth can be dried without being adhered after the film coats the tooth for 30 seconds. Even under a masticatory movement condition, the film is also can be kept un-dropped and un-dissolved, and the uniform covering, whitening and brightening substance in the film can enable the tooth to be bright and white, so that effects of instantly beautifying teeth are achieved. Meanwhile, the coated film can isolate eaten substances from invading the tooth, can protect the tooth and can relieve tooth exogenous coloring. The coated film is stable in an oral cavity, can be removed by brushing teeth, is simple and convenient to use; the content is an oral cavity material or a medical-grade component material, and safe to use.
Owner:广州舒客实业有限公司

Bonding agent for wax processing of wafer and preparation method thereof

The invention discloses a bonding agent for wax processing of a wafer and a preparation method thereof. The bonding agent mainly comprises paraffin wax, rosin and shellac, wherein the paraffin wax, the rosin and the shellac are proportioned according to the weight ratio of 20-50: 40-75: 5-20. The bonding agent can regulate the melting point by changing the adding proportion of raw materials, and the melting point can be generally controlled within the range of 70 DEG C-130 DEG C, in particular to 80 DEG C-120 DEG C. The preparation method of the bonding agent for was processing of the wafer comprises the step of utilizing a die to prepare the melted bonding agent which is uniformly stirred into a finished product bonding agent with a certain shape. The bonding agent utilizes the die for processing and molding and can meet various application needs in the actual production by changing the size and the shape of a model when being applied in the wafer processing process, and be easy to store.
Owner:苏州天科合达蓝光半导体有限公司 +2

Field effect tube gas sensor based on shellac encapsulation/regulation and preparation method thereof

The invention discloses a field effect tube gas sensor based on shellac encapsulation/regulation and a preparation method thereof. The field effect tube gas sensor comprises a degradable substrate, a grid electrode, an insulation layer, a semiconductor layer, a source electrode and a drain electrode in sequence from top to bottom, wherein a shellac layer is arranged between the insulation layer and the semiconductor layer. The insulation layer is coated with shellac, and the shellac is good in bonding property and compactness and high in dielectric intensity, so that the erosion of water and oxygen on the degradable substrate and the insulation layer is prevented and the stability of the degradable substrate and the insulation layer is improved; at the same time, based on unique thermal plasticity and polymerization properties of the shellac, the shellac layer is directly treated, so that various morphologies of the semiconductor layer on the shellac can be obtained, the area of reaction with target gas is enlarged, and the gas response property is improved; the shellac belongs to natural materials and is wide in source and lower in cost; the field effect tube gas sensor adopts a material for realizing encapsulation and patterning and is easier to prepare, lower in cost, more environment-friendly and suitable for large-scale mass production, and the degradable substrate is practical.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
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