13results about "Shellac coatings" patented technology

The invention relates to low-moisture-content self-hardening furan resin for casting and a preparation method of the low-moisture-content self-hardening furan resin, and belongs to the technical field of self-hardening furan resines.The self-hardening furan resin is obtained by combining a resin base material with a net-shaped adhesion structure, and the net-shaped adhesion structure is obtained by spraying net-connected adhesive glue on the outer surface of the resin base material. The resin base material is prepared from 65 to 75 parts of furfuryl alcohol resin, 6 to 12 parts of toluenesulfonic acid, 3 to 6 parts of melamine, 8 to 10 parts of phenol and 5 to 10 parts of urea. According to the invention, the peach gum, the rosin and the shellac are all excellent natural adhesives and have good film-forming property and adhesive force, and the resin base material is mixed with the net-connected adhesive glue by adopting the method provided by the invention; compared with the traditional self-hardening furan resin prepared by mixing the resin base material and the net-connected adhesive by adopting a stirring mode of a stirrer, the self-hardening furan resin has the advantages that the physical property is better, and the addition of water in the furan resin can be reduced in the actual use process.

To provide a biodegradable thermal adhesive coating agent composition, which is biodegradable and has superior properties and to provide a method of preparation thereof.SOLUTION: The present invention relates to a biodegradable thermal adhesive coating agent composition and a method of preparation thereof, and more specifically, it relates to a biodegradable thermal adhesive coating agent composition, which is biodegradable in order to be environment-friendly, excellent in its adhesion to substrates of various materials, such as paper, plastic, etc., stable in water resistance and viscosity change, and suitable for a production process using thermal adhesion, as well as a method of preparation thereof.SELECTED DRAWING: Figure 1

A method for forming a water, oil, and / or gas resistant and / or impermeable product. The method includes (a) coating a product with a composition, the composition including: a protein, wherein the protein, is a plant-derived protein, an animal-derived protein, a fungus-derived protein, or any combination thereof; and / or shellac; and (b) heating the coated product. The coated product may be heated to temperatures in excess of the ignition temperature of the uncoated product and / or in excess of the thermal degradation temperature of the protein and / or shellac (e.g. to temperatures between 200° C. and 300° C.) without damaging the coated product. Water, oil, and / or gas resistant and / or impermeable products formed by the method may includes cellulose-based products such as a paper-, cardboard- or wood-based products. The products may form part of or all of a container for use in the food and beverages industry or an item of cutlery.

This application relates to a coated paper comprising a base paper and at least one coating layer applied indirectly or directly to the base paper. The coating layer comprises (a) at least one natural wax and / or at least one carboxylic acid component and (b) at least one natural resin, and the coated paper has reduced permeability to at least one gas compared to the base paper. This application also relates to a coating composition used in producing such a coated paper, a production method, and the resulting packaging.

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.

The invention provides a biodegradable film packaging material and a preparation method thereof.The preparation method comprises the steps that a natural reducing agent and an oxidation precursor solution are mixed, the pH of the mixed solution is adjusted to be alkaline, centrifugation is conducted after heating and stirring, precipitates are calcined, and filling particles are obtained; mixing the hard-phase material and the soft-phase material, adding a functional additive, carrying out melt extrusion molding to obtain master batches, and carrying out hot press molding on the master batches to obtain a bottom layer film; mixing the filling particles with a dispersing solvent to obtain filling sol, coating the surface of the bottom layer film with the filling sol to form a barrier layer, and sequentially coating the barrier layer with a color developing film and a waterproof coating film to obtain the biodegradable film packaging material. The filling particles serve as hard nodes, the puncture resistance and tensile modulus of the bottom layer film are remarkably improved, the requirements for blocking and breaking resistance in the packaging process are met, and damage prompting is achieved through the developing film.

This invention relates to the field of food packaging and functional food technology, and discloses an edible soybean residue-based cup with preservation and health-promoting functions, and its preparation method. The cup includes a soybean residue-based preform, which is formed by extrusion injection molding from soybean residue ultrafine powder, composite starch, and pH-sensitive health-promoting microcapsules. Its inner wall is coated with an active preservation layer containing glucose oxidase, catalase, and nisin, and its outer surface is coated with a physical barrier film formed by beeswax and shellac curing. This invention improves the water resistance and structural stability of the substrate by constructing a physical barrier film on the outer wall to seal pores; it actively reduces the oxygen partial pressure inside the cup and inhibits microbial growth through the synergistic effect of the multi-enzymatic reaction and antimicrobial peptides in the inner wall preservation layer, thus extending the shelf life of the food; and it combines microcapsule technology to protect the active core material in gastric juice and target its release in the intestine, improving the bioavailability of the health-promoting components.

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.

A method of forming a water, oil, and / or gas resistant and / or impermeable product is disclosed, the method comprising the steps of (a) coating the product with a composition, the composition comprising a protein and / or shellac, the protein being a plant-derived protein, an animal-derived protein, a fungal-derived protein, or any combination thereof, and (b) heating the coated product.

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 application relates to a coated paper comprising a base paper and at least one coating applied directly or indirectly onto the base paper, wherein the coating comprises a) at least one natural wax and / or at least one carboxylic acid component; and b) at least one natural resin; wherein the permeability of the coated paper for at least one gas is reduced compared to the base paper. Furthermore, the application relates to the coating used for producing the coated paper, the production method, and the packaging produced therefrom.

The present invention relates to a composition for absorbing ultraviolet (UV) electromagnetic radiation, wherein the composition comprises a UV absorbing agent and a film forming agent, wherein the UV absorbing agent is a compound Ar-Xn-R with Ar, X, n and R as defined in the specification, particularly the UV absorbing agent is cinnamic acid, cinnamyl alcohol or gallic acid, or a derivative thereof. The invention further relates to a substrate comprising a coating and a method for protecting a surface of a substrate from UV electromagnetic radiation.

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 wax, and a polymer blend comprising shellac, a film-forming polymer that is water-soluble or biodegradable, and, optionally, a plasticizer, in which the wax is emulsified as solids in the aqueous fluid and the polymer blend 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 crosslinking agent. The wax and / or the plasticizer may also be naturally sourced as well. Thin-film coatings upon seeds or other substrates may comprise the wax and the polymer blend, in which the shellac is distributed as a continuous phase in the thin-film coating.