35 results about "Shellac" patented technology

The invention relates to the technical field of conductive coatings, and discloses a weather-resistant bio-based conductive coating based on water-based palm wax / shellac and a preparation method thereof, the weather-resistant bio-based conductive coating comprises the following raw materials by mass: 20-30 parts of a natural palm wax nano emulsion, 70-80 parts of a shellac ethanol solution, 1-3 parts of Tween 80, and 30-80 parts of a silver coated copper powder / carbon nanofiber composite material. According to the scheme, the super-hydrophobic barrier is constructed by introducing the water-based palm wax, the moisture absorption rate is reduced, electrochemical corrosion and stress stripping are effectively reduced, and the service life of a base material is prolonged. Meanwhile, lac is added in the scheme, a three-dimensional network structure is formed through crosslinking of the water-based palm wax emulsion and biomass hydroxyl, and the flexibility and moisture resistance of the coating are effectively improved. Specifically, according to the scheme, the water-based palm wax and the shellac are combined and used, so that the weather resistance of the coating is effectively improved, for example, the moisture absorption rate of the coating is reduced to 12% (ASTMD570 standard), and the flexibility of the coating is improved (the elongation at break gt; 50%), the moisture resistance is improved by 3 times (the water vapor permeability lt; 10 g / m < 2 >. Day).

The invention discloses a fuel assembly assembling method and belongs to the field of nuclear power. The method comprises the following steps: immersing the zirconium alloy pipe fitting into a shellac resin coating agent dissolved by ethanol, then taking out and drying to form a protective paint film on the surface of the zirconium alloy pipe fitting; and after the fuel assembly is assembled by pulling the rod, the fuel assembly is immersed in a release agent to remove the protective paint film. The method can effectively reduce the risk of damage to the surface coating of the zirconium alloy pipe fitting in the assembling process, and improves the service life and reliability of the fuel assembly.

In one aspect, the disclosure relates to multilayer composite films comprising a first biopolymer such as agarose, and a second biopolymer such as shellac. In the films, one or both layers may further comprise a biodegradable plasticizer. In a further aspect, the films can be flat or can be thermoformed to have a three-dimensional shape. The films are biodegradable and have very low permeability to water, gases, and other contaminants. Also disclosed are methods of making the films and consumer product packaging materials comprising the films.

This invention discloses a method for preparing printing ink for smooth, hard food surfaces, comprising the following steps: preparing a mixed solution of plant protein; mixing it with shellac in anhydrous ethanol, then adding polyol and pigment for dispersion, followed by grinding and filtration to obtain the final product. This invention enables gravure printing on the hard, smooth surfaces of food, exhibiting good adhesion, excellent ink transfer properties, clear and smooth printing, and a certain degree of water resistance. Furthermore, it controls the ink drying speed; black and white inks dry at a moderate speed to avoid cracking and peeling; color inks dry at a moderate speed to avoid clumping. It also allows for overprinting of two or more colors, and the ink has good abrasion resistance, preventing color fading during transportation after packaging.

The invention relates to the technical field of photovoltaic glass, and discloses coated photovoltaic glass and a preparation method thereof.The preparation method comprises the steps that acrylic resin, modified nanometer titania, a fluorine-containing flame retardant, modified cellulose and shellac are added into mixing equipment and mixed, and coating liquid is obtained; and coating the surface of one side of a glass substrate with the prepared coating liquid by using a roller coating method, then carrying out low-temperature curing to form a composite protective layer, and after coating is completed, carrying out cleaning treatment to obtain the coated photovoltaic glass. The coated photovoltaic glass disclosed by the invention has relatively good flame retardance, impact resistance and weather resistance.

In one aspect, the disclosure relates to multilayer composite films comprising a first biopolymer such as agarose, and a second biopolymer such as shellac. In the films, one or both layers may further comprise a biodegradable plasticizer. In a further aspect, the films can be flat or can be thermoformed to have a three-dimensional shape. The films are biodegradable and have very low permeability to water, gases, and other contaminants. Also disclosed are methods of making the films and consumer product packaging materials comprising the films.

The invention relates to an apparatus (10) for intraoral use, in particular an orthodontic apparatus, comprising a substrate (2) and a coating (3) applied to the substrate (2), wherein the coating (3) contains shellac, in particular consists of shellac.

The invention belongs to the technical field of sealants, and discloses a sealant pasting material as well as a preparation method and an application method thereof. The preparation method comprises the following steps: dissolving shellac in absolute ethyl alcohol to obtain a solution; standing the obtained solution, filtering, heating to a preset temperature, and keeping the solution in a boiling state; and in a stirring state, adding colloidal graphite into the solution in a boiling state, uniformly mixing, and stopping heating after the glue solution begins to be drawn, so as to obtain the sealant paste material, wherein the sealant coating paste material is prepared from the following components in parts by weight: 60 to 70 parts of absolute ethyl alcohol, 20 to 30 parts of shell-lac and 9 to 11 parts of colloidal graphite. According to the technical scheme disclosed by the invention, the efficiency, quality and safety of equipment assembly construction are remarkably improved.

1. Name of the Design Product: Integrated Brush Cover (with Felt Sponge). 2. Use of the Design Product: It can not only serve as a cover to protect the product nozzle, but also the felt sponge on the cover top can be used to clean stains such as tree gum, oil film, and shellac on glass. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo that Best Illustrates the Design Key Points: Perspective View.

The application discloses a shellac coating for pipeline welding and a preparation process thereof, and particularly relates to the field of materials for brazing or welding, wherein, according to proportions, the weight of the matting powder, the glutinous rice powder, the biochar powder and the ethanol is determined to prepare component A; and according to proportions, the weight of the shellac sheet and the ethanol is determined to prepare component B. By constructing a staged response structure with shellac as a matrix, combining a cross-linking gel network and a controllable chelation stripping system, the anti-rust coating has two optional response paths before welding: on the one hand, without using sodium alginate, the coating structure is stable, can directly withstand the high temperature required by welding, and rapidly gasifies above 200 degrees Celsius without leaving residues, thereby eliminating the polishing step; on the other hand, if EDTA solution is sprayed before welding, the calcium ions in the film layer can be selectively chelated, the cross-linking network is destroyed, the whole film layer is slipped or peeled off in an integral block, and the operation mode is adapted to different construction requirements.

There is provided a packaging bag in which the occurrence of blocking is prevented while achieving mono-materialization. A packaging bag includes a bag body 3 formed by overlapping inner surfaces of packaging films 2A and 2B made of a laminated film of one or a same kind of material and bonding peripheral edge portions of the films to each other by heat seal. The packaging films 2A and 2B include a base material layer that forms an outer surface of the bag body 3 and a heat seal layer that forms an inner surface of the bag body 3. The bag body 3 includes a pair of flat portions 4 facing each other and gusset portions 5 and 6 folded inward between the pair of flat portions 4. The gusset portion 6 is formed of the packaging film 2B in which a coating layer containing a resin component selected from cellulose nitrate, polyamide, shellac, epoxy, polyurethane, chlorinated polyolefin, a mixture of silicone and acrylic, or a mixture of silicone and polyamide is provided on an outer surface at least at a position corresponding to the peripheral edge portion.

Coatings may convey moisture resistance when deposited upon a base substrate. Coating formulations containing no synthetic polymers may comprise: an aqueous fluid, at least partially neutralized shellac dissolved in the aqueous fluid, and a plurality of wax particles emulsified as solids in the aqueous fluid. Thin-film coatings formed by depositing the coating formulations and removing the aqueous fluid therefrom may be significantly impermeable to water, as determined by the thin-film coating having a moisture vapor transmission rate of at most about 1200 m2 / g, as measured at 38°C and 90% relative humidity by ASTM F1249 or ASTM E96, and / or a Cobb index of at most about 105 m2 / g, as measured over 1800 s by ISO 535, ASTM D3285, or TAPPI T441.

The embodiments of the present application relate to the technical field of coating. Disclosed are a coating composition, a coating method for accentuating wood grain, and a coated wood. The coating composition and coating method provided in the present invention provide an effective solution to the problems in the prior art of the presentation of wood grain being unclear, and the coating having an excessively high hiding power and being prone to discoloration. Shellac or a shellac-based derivative material is selected as a film-forming agent, and is formulated with a suitable volatile carrier solution, thereby ensuring that a paint film formed by a coating on a wood surface is transparent and long-lasting, and prolonging the service life of the wood surface. By means of the detailed coating steps, it is ensured that the coating uniformly covers the wood surface and penetrates deep into fine pores of the wood, such that wood grain is more distinct, and wood grain blurring caused by coating accumulation or uneven coating penetration in conventional processes is prevented. In summary, the coating composition and coating method of the present invention achieve an ideal effect of both aesthetics and practicality.

The invention discloses a shellac coating for pipeline welding and a preparation process of the shellac coating, and particularly relates to the field of materials for brazing or welding. Extinction powder, glutinous rice flour, biochar powder and ethyl alcohol are weighed according to the proportion to prepare a component A; weighing shellac and ethanol according to a ratio to prepare a component B; by constructing a staged response structure which takes shellac as a matrix and combines a cross-linkable gel network and a controllable chelating and stripping system, the anti-rust coating has two optional response paths before welding: on one hand, under the condition that sodium alginate is not used, the coating is stable in structure, can directly bear high temperature required by welding, and is quickly gasified at 200 DEG C or above; residues are not left, and the polishing step is omitted; and on the other hand, if an EDTA solution is sprayed before welding, calcium ions in the film layer can be selectively chelated, a cross-linked network can be destroyed, overall slippage or overall stripping of the film layer is achieved, and operation modes under different construction requirements are adapted.

This invention discloses a method for preparing amphoteric electrodeposition photoresist on a metal surface, specifically including the following steps: Step 1, synthesizing cashew nut shellac monomer; Step 2, preparing an amphoteric resin; Step 3, preparing an electrophoretic coating; Step 4, electrophoretically depositing photoresist on a conductive substrate. This invention also discloses the preparation method and application of amphoteric electrodeposition photoresist on a metal surface. This invention solves the problems of existing photoresists causing complex formation due to strong alkalis, corrosion of metal circuits by strong acids, and swelling of the photoresist film.

Coatings may be used to discourage agglomeration and dust formation when handling seeds. Aqueous emulsions suitable for coating seeds and other substrates may comprise an aqueous fluid, a film-forming polymer that is water-soluble or biodegradable, optionally, a plasticizer, and shellac particles dispersed in solid form in the aqueous fluid. The film-forming polymer is at least partially dissolved in the aqueous fluid. Optionally, the aqueous emulsions may comprise at least one effect pigment, and / or at least one wax, and / or one or more of at least one surfactant, at least one biocide, at least one preservative, at least one second film-forming polymer, at least one crosslinking agent, or any combination thereof.

The present disclosure relates to acid resistant banding solutions for two piece hard capsules, and methods of making the same. The present disclosure also relates, in part, to a method for banding such capsules which provides an acid resistant seal between the capsule parts and achieves an increased acid resistance in vitro. The instant disclosure further relates to a capsule sealing solution formula that comprises shellac ink or shellac ink vehicle component.

The invention relates to the field of adhesive tapes, and provides a high-adhesion residual-adhesive-free insulating battery cell adhesive tape and a preparation method thereof.The adhesive tape sequentially comprises a transparent PET base material layer, an acrylic acid pressure-sensitive adhesive layer, a blue PET base material layer, an acrylic acid pressure-sensitive adhesive layer and a release layer from bottom to top; the acrylic pressure-sensitive adhesive layer is prepared from the following raw materials in parts by weight: 80-100 parts of polyacrylic resin, 1-4 parts of a curing agent, 10-20 parts of modified shellac resin, 4-8 parts of filler, 1-4 parts of an initiator, 0.5-3.5 parts of a coupling agent, 1-3 parts of a dispersing agent and 55-75 parts of a solvent; and the release layer is a PET release layer. The adhesive tape provided by the invention has the characteristics of high adhesion, no adhesive residue, high temperature resistance and good insulation protection effect.

The application relates to the technical field of photovoltaic glass, and discloses a coated photovoltaic glass and a preparation method thereof, wherein acrylic resin, modified nano titanium dioxide, fluorine-containing flame retardant, modified cellulose and shellac are added into a mixing device, mixed, and a coating solution is obtained; the prepared coating solution is coated on the surface of one side of a glass substrate by using a roll coating method, then low-temperature solidification is carried out to form a composite protective layer, and after the coating is completed, cleaning treatment is carried out, so that the coated photovoltaic glass is obtained. The coated photovoltaic glass has good flame retardation, impact resistance and weather resistance.

This invention relates to the field of bioprotective materials technology and discloses a composite insect-repellent and mildew-proof coating liquid. The core antibacterial and insecticidal components are a blend of clove bud essential oil, garlic essential oil, and Australian tea tree essential oil. A composite surfactant is prepared using castor oil polyoxyethylene ether, transparent hydrogenated castor oil, and ethanol, which is then emulsified to obtain a composite essential oil emulsion. This emulsion is then blended with a shellac coating liquid to obtain the coating liquid. Through the synergistic effects of essential oil blending, emulsion stabilization, and shellac film-forming slow release, this invention achieves long-lasting 100% anti-mildew efficacy against Aspergillus niger, Trichoderma viride, and Penicillium citrinum, as well as 100% contact killing effect on mealworm larvae within 2 days. It also features uniform film formation, strong adhesion, long protection period, low essential oil dosage, mild odor, green and residue-free operation, and simple and easily scalable processing. It can be widely used for long-lasting insect and mildew protection in mycelial materials, food storage, agricultural product preservation, and feed storage.

The invention relates to a clay model paint spraying method which comprises the following steps: spraying shellac paint on the surface of a clay model to obtain a clay model sprayed with shellac paint; spraying primer on the surface of the clay model sprayed with shellac paint; and spraying finish paint on the surface of the primer. The shellac varnish is sprayed on the surface of the clay model before the primer is sprayed to serve as a separation layer, the clay and the paint can be effectively isolated, components of the clay cannot be mixed with the paint, the adhesive force of the paint sprayed in the later period can be improved, and the shellac varnish, the primer and the finish paint are cured on the surface of the clay model through chemical reaction in a spraying mode, so that the coating effect is good. The durability of the paint film is better than that of a mode of pasting a colored plastic decorative film, and the technical problem that the durability of the mode of pasting the colored plastic decorative film is poor in the prior art is solved.

The utility model relates to a shellac dissolving tank for shellac coating production, which comprises a tank body, a support seat arranged at the bottom of the tank body, a premixing cavity arranged at the upper part of the tank body, a dissolving cavity arranged at the lower part of the tank body, a material guide channel with a valve arranged between the premixing cavity and the dissolving cavity, and a plurality of feed ports arranged at the top of the tank body and connected with the premixing cavity, a premixing stirring mechanism is arranged in the premixing cavity, a plurality of ultrasonic transducers are uniformly distributed on the circumference of the outer wall of the premixing cavity, an ultrasonic generator connected with the ultrasonic transducers is arranged on the supporting seat, a plurality of heating cavities are formed in the inner wall of the dissolving cavity from top to bottom, and electric heating pipes are arranged in the heating cavities; a dissolving and stirring mechanism is arranged in the dissolving cavity, and an auxiliary heating mechanism is arranged on the dissolving and stirring mechanism. According to the device, shellac particles can be conveniently crushed before dissolution and fully premixed with a solvent, heating is uniform in the dissolution process, and the dissolution and mixing effects are good.

The invention belongs to the field of food additives-compound coating agents and medicine solid preparation film coating agents, and particularly relates to a lac-based water-based enteric coating composition as well as a preparation method and application thereof. Hydrophobic stearic acid and / or magnesium stearate are / is added into a formula, the hydrophobic stearic acid and / or magnesium stearate and sodium alginate are blended and ground to form the solid dispersion so as to realize non-crystallization of insoluble components, and a water solubility test of the prepared solid dispersion accidentally finds that the solid dispersion has a good water solubility. The stearic acid / magnesium stearate-sodium alginate solid dispersion can be dissolved in water to form a uniform transparent colloidal solution. After the surface of a coated object is coated with a coating solution formed by combining the modified starch with a liquid of a shellac-carrageenan co-treatment substance to form a coating, no white spots exist on the surface, it is found that after acceleration, the coating is good in moisture resistance and free of adhesion, and especially the phenomenon that cracks of soft capsules become white or undesirable in the coating operation process does not occur any more.

The application discloses a kind of over gastrointestinal coating materials and preparation method and application thereof, belong to functional coating material and feed additive preparation technical field.The coating material has continuous phase-dispersed phase two-phase structure: continuous phase includes hydrogenated oil, as over stomach barrier and heat-resistant framework;Dispersed phase includes the degradable microsphere with shellac coating on surface, uniformly embedded in continuous phase.Shellac coating has the dual function of protecting anchoring in stomach and dissolving and exposing microsphere in intestinal pH response.After microsphere degrades in intestinal, form spherical cavity in continuous phase in situ and interconnect into through channel network, guide coating film to be fragmented into small fragments along the arrangement direction of microsphere, it is expected to solve the shell film residue problem caused by the disordered dissolution of existing single-phase homogeneous film depending on surfactant.Microsphere and microfibrillated cellulose can form a synergistic framework to enhance the stability of high-temperature form.The coating material simultaneously realizes the organic unity of high-temperature resistance, over stomach protection and intestinal disintegration, and is suitable for coating treatment of tannic acid and other plant polyphenols feed additives.

The invention discloses a preparation method and application of a bio-based low-surface-energy anti-fouling polyurethane coating. Specifically, cardanol is taken as bio-based polyol, hexamethylene diisocyanate tripolymer (HDIT) is adopted for crosslinking, and single-end hydroxyl-terminated polydimethylsiloxane (PDMS-OH) is introduced for covalent grafting, so that the low-surface-energy anti-fouling polyurethane coating and the preparation method thereof are provided. An internal nano supply pool is formed through covalent grafting of PDMS-OH, so that a low-surface-energy Si-group is enriched on the surface of the coating, and excellent hydrophobic / oleophobic antifouling (static water contact angle is about 108 degrees), good mechanical property and chemical stability are realized while high transparency (light transmittance at 500 nm can reach 100.3%) and smooth surface are maintained. The preparation method is completed by adopting a one-pot method at the temperature of 80 DEG C in the presence of a catalyst DBTDL (0.1 wt%), is simple in process, can be amplified, and is suitable for transparent antifouling protection of various substrates such as glass, metal and the like.

This invention discloses a ceramic membrane comprising a metal oxide particle stacked ceramic membrane body, with shellac adhering to the surface of the metal oxide particles. Using water-resistant, oil-resistant, and corrosion-resistant shellac as a raw material, this invention combines the shellac with the surface of the metal oxide particles via a hydrothermal method, solving the problem of poor oil-water separation and oil removal rate in blank membranes in vinegar-water mixtures, and is also environmentally friendly.

To provide paper-based mulch sheets that use minimal materials derived from fossil resources. [Solution] The base paper and the coated layers formed on both sides of the base paper by coating, The aforementioned base paper contains biomass-derived fibers, The aforementioned coating layer contains shellac, A paper-based mulch sheet in which the proportion of materials derived from fossil resources to the total is 1% by weight or less.

The present invention discloses a wear-resistant unglazed polished porcelain tile and a preparation method thereof, belonging to the technical field of unglazed polished porcelain tiles, including a brick layer and a reinforced wear-resistant layer coated on the surface of the brick layer. The bottom blank is prepared by recycling ceramic micro-powder, sintered fly ash, nano Lu 2 O 3 , hydroxyapatite, and calcium magnesium silicon composite material. The shellac resin is modified by using hollow glass microspheres with a diameter of 100-200 μm and polyphosphoric acid. Then, a reinforced wear-resistant composite material is prepared by using the modified shellac resin, hollow glass microspheres with a diameter of 400-500 μm, 2-acrylamido-2-methylpropanesulfonic acid, carboxymethyl cellulose, and 120 parts of solvent. After the bottom blank is sintered and cooled, the reinforced wear-resistant composite material is coated on the surface to obtain an unglazed polished porcelain tile with a polished surface layer. The prepared unglazed polished porcelain tile has a high surface hardness, good wear resistance, is not easy to fall off, has good stain resistance, high thermal shock resistance, and high tile strength.

The utility model discloses a shellac varnish coating device, which belongs to the technical field of ammunition assembly and comprises a storage stirring mechanism, a conveying mechanism, a coating mechanism and a rotating mechanism. The storage stirring mechanism is used for storing shellac varnish and stirring the shellac varnish to avoid the phenomenon that the shellac varnish is layered up and down; the conveying mechanism is connected with the storing and stirring mechanism and the brushing mechanism and is used for quantitatively conveying the shellac varnish in the storing and stirring mechanism to the brushing mechanism; the rotating mechanism is used for arranging the grain, and the brushing mechanism is provided with a gluing brush and used for conducting gluing operation on the grain. A gluing module is arranged in the brushing mechanism, and a gluing brush is driven to move and brush the grain; a rotary table and a servo motor are arranged in the rotating mechanism, the servo motor controls the rotary table to rotate so as to drive the grain to rotate, and the outer side face of the grain is coated with the gluing brush. The device has the advantages of being uniform in painting, high in production efficiency, capable of achieving man-machine isolation, safe and explosion-proof.