52results about "Agar-agar coatings" patented technology

A hard coat film includes a transparent plastic film substrate; and a hard coat layer, wherein the hard coat layer is formed of a composition for forming a hard coat layer, the composition containing the following component (A), component (B), and an organic solvent:Component (A): a polyrotaxane,Component (B): a monomer having two or more ethylenically unsaturated groups.

The invention relates to compositions for coating of printing paper, said compositions comprising microfibrillated cellulose (MFC) and one or more polysaccharide hydrocolloids, and use of said compositions. Further, the invention relates to coated paper, comprising a first layer of polysaccharide hydrocolloid(s) and a second layer of MFC, and use of said paper. A method for reducing the linting and / or dusting of a paper is also disclosed.

A process for forming polysaccharide structures such as beads, gel films and porous coatings on porous substrates by forming a room temperature gel-inhibited solution of a polysaccharide, one or more gel-inhibiting agent(s) and a solvent such as water, heating the mixture until all the components are dissolved, cooling the mixture as a solution to about room temperature, forming a three dimensional structure with the solution and adding the structure to a gelling agent to form a polysaccharide gel. Optionally, the solution can be added to a porous structure such as a non-woven fabric or a porous membrane and the solution is allowed to dry before being subjected to the gelling agent. Porous structures having a polysaccharide coating and being capable of convective flow through the pores of the structure and diffusive flow through the coating can be formed.

This invention relates to biopolymer-based compositions and biopolymer-based formed bodies such as film, sheet, capsule, casing or coating-film or spray thereof. In another embodiment, the invention relates to a process for producing a biopolymer-based starting material and biopolymer-based formed bodies such as cited above, for the manufacture of pharmaceutical, veterinary, food for cosmetic products.

A filtration membrane coating comprising a hydrophilic polymer, a surfactant, and one or more charged compounds, each containing one or more sulfonate functionalities and one or more linkable functionalities selected from the group consisting of amine, monochlorotriazine, and dichlorotriazine. The hydrophilic polymer and surfactant form a thin primer layer which is also superhydrophilic. The primer layer improves flux, and enables improved adhesion of the one or more charged compounds, which form a charged dye layer on top of the primer layer when enhances rejection of charged divalent ions. The coating can be applied while the membrane is packaged in its final form, such as in a spiral wound or other configuration.

Room temperature stable, non-gelling polysaccharide solutions such as agaroses, dextrans and cyclodextrans are made by the present invention. It has been found that by incorporating certain gel-inhibiting additives into an aqueous polysaccharide solution, the gel point is reduced or eliminated and the solution remains liquid at room temperature indefinitely. Additives that have been found to work include salts, such as lithium chloride and zinc chloride and bases, such as sodium hydroxide and lithium hydroxide. Mixtures of said salts and said bases can also be used with the same desired results. The composition of these solutions of the present idea can be further modified to include other additives, such as organic co-solvents or non-solvents, pH modifiers, surfactants or other polymers to customize the properties of the solution to improve the processability for the desired application and to form structures such as films, beads and coated porous substrates.

An adhesion composition is disclosed. In one embodiment, the composition includes a gel material and an adhesion resin, a weight ratio of the gel material and the adhesion resin ranging from about 1:10 to about 1:100.

The invention provides a graphene heat conductive coating modified radiator, comprising a heat dissipation base and a heat dissipation fin. An outer surface of the heat dissipation fin is sprayed witha graphene coating, and the composition of the graphene coating comprises graphene oxide, solvent, dispersant, adhesive, thickener, composite conductive agent, carbon fiber filler, hydrophobic fillerand low surface energy organic matter. The graphene heat conductive coating modified radiator provided by the invention has excellent thermal conductivity by coating the heat dissipation fin thereofwith the modified graphene heat conductive coating, and at the same time, the heat conductivity, wear resistance, hydrophobicity and corrosion resistance of the graphene heat conductive coating are enhanced by adding carbon fiber filler, hydrophobic filler to the graphene heat conductive coating, enables the radiator to be used in a water heater or other equipment, and is less prone to corrosion when exposed to a medium for a long time.

The present invention relates to a Plasticizer, which is fabricated by mixing monomers of biodegradable polymer with bio-molecules subsequently to deal the mixture with thermal treatment. The Biodegradable material comprising the Plasticizer has high melt index which is contributive for the processing of thermal processing, and the microwave-tolerance and water-resistance of the material makes the material suitable for food packaging.

A hard coat film includes a transparent plastic film substrate; and a hard coat layer, wherein the hard coat layer is formed of a composition for forming a hard coat layer, the composition containing the following component (A), component (B), and an organic solvent:Component (A): a polyrotaxane,Component (B): a monomer having two or more ethylenically unsaturated groups.

The invention provides a polymer medical instrument with a hydrophilic lubricating coating and a preparation method thereof, and the preparation method comprises the following steps: (1) mixing a hydrophilic polymer material, an initiator and a solvent to obtain a precursor solution of the hydrophilic lubricating coating; (2) carrying out oxygen plasma treatment on the polymer medical instrument,and then soaking the polymer medical instrument in a pretreatment solution, wherein the pretreatment liquid contains a photoinitiator; and (3) coating the surface of the polymer medical instrument treated in the step (2) with the precursor solution obtained in the step (1), and then carrying out photocuring to obtain the polymer medical instrument with the hydrophilic lubricating coating. The polymer medical instrument with the hydrophilic lubricating coating has the stable and long-acting super-lubricating and hydrophilic characteristics, the monomer polymerization process does not exist in the preparation method of the polymer medical instrument, and it can be guaranteed that the hydrophilic lubricating coating has excellent biocompatibility.

The invention relates to a mildewproof preservative film. The mildewproof preservative film comprises a base layer and a mildewproof preservative coating arranged on the base layer, wherein the base layer is a biodegradable plastic thin film; the raw materials of the mildewproof preservative coating comprise the following components in percentages by weight: 30% to 60% of main ingredients, 0.1% to10% of a natural extract mold inhibitor and 30% to 65% of a solvent; the main ingredients comprise at least one of modified starch, water-soluble chitosan, an agar modifier, modified rosin and rosinderivatives; and the solvent comprises water and / or ethyl alcohol. The mildewproof preservative film has preferable effects of water and oxygen blocking performance and mildewproof effect, and can bedegraded under a microbial action in nature, so that the mildewproof preservative film is free of pollution to the environment.

A process for forming polysaccharide structures such as beads, gel films and porous coatings on porous substrates by forming a room temperature gel-inhibited solution of a polysaccharide, one or more gel-inhibiting agent(s) and a solvent such as water, heating the mixture until all the components are dissolved, cooling the mixture as a solution to about room temperature, forming a three dimensional structure with the solution and adding the structure to a gelling agent to form a polysaccharide gel. Optionally, the solution can be added to a porous structure such as a non-woven fabric or a porous membrane and the solution is allowed to dry before being subjected to the gelling agent. Porous structures having a polysaccharide coating and being capable of convective flow through the pores of the structure and diffusive flow through the coating can be formed.

The invention relates to a capsule, in particular for preparing a beverage from beverage powder, in particular coffee from coffee powder, by introducing water into the capsule, which capsule comprisesa pressed article composed of a powder containing at least one polysaccharide, wherein the pressed article is coated with at least one coating layer, wherein the at least one coating layer comprisesa cross-linked polysaccharide, wherein the cross-linked polysaccharide was obtained by cross-linking a polysaccharide by means of a cross-linking agent without using a polyol spacer. A method for producing such a capsule comprises the following steps: i) providing a pressed article composed of a powder containing at least one polysaccharide, ii) bringing at least part and preferably the entire surface of the pressed article obtained in step i) in contact with a solution of a polysaccharide in a solvent or with a dispersion of a polysaccharide in a dispersant, iii) possibly removing the pressedarticle from the solution or the dispersion of step ii), iv) bringing the pressed article obtained in step ii) or iii) in contact with at least one cross-linking agent, v) possibly removing the pressed article from the solution of step iv), and vi) drying the pressed article obtained in step iv) or v).

The invention provides a precursor solution of a hydrophilic lubricating coating and application of the precursor solution to preparation of a surface coating of a medical instrument. The precursor solution is composed of a hydrophilic polymer material, an initiator and a solvent. The hydrophilic lubricating coating provided by the invention has the characteristics of super lubrication and hydrophilicity, can be universally applied to medical equipment comprising various base materials such as macromolecules and metals, and can form firm covalent bonds with the medical equipment, so the hydrophilic lubricating coating on the surface of the medical equipment is stable and long-acting; and meanwhile, the curing process of the hydrophilic lubricating coating provided by the invention does not have a monomer polymerization process, so the hydrophilic lubricating coating can be ensured to have excellent biocompatibility.

The invention relates to a precise wire circuit and a preparation method thereof. The preparation method comprises the following steps of (1) preparing paste, wherein the paste comprises metal ions and a reducing agent; (2) laying the paste on a surface of a substrate; (3) irradiating the paste with laser, and reducing the metal ions to elemental metal so as to form a circuit; and (4) cleaning thepaste which is not reacted, and obtaining the precise wire circuit. According to the preparation method (direct-writing technology) of the precise wire circuit, a method for forming the circuit or aconductive pattern through chemical or photochemical reaction between the substrate and the paste by means of an optical effect or a heat effect of the laser on a surface of the substrate and the paste is employed, the direct-writing technology is high in accuracy, a mask is not needed, and the direct-writing technology is applicable to an arbitrary substrate.

The invention discloses a composite antibacterial polypropylene fresh-keeping box and a preparation method thereof. A composite antibacterial material is prepared from antibacterial components extracted from herba taraxaci, herba elephantopi, herba menthae and folium seu cortex nerii indici, as well as zinc salt and other additives; in addition, the materials are dissolved in agarose having a porous structure and coat the surface of the fresh-keeping box. During daily use, the agarose absorbs water to keep the articles in the fresh-keeping box dry; on the other hand, even if bacteria grow, the bacteria grow on the surface of the fresh-keeping box having agarose, but the agarose has bacteriostatic and bactericidal active substances to kill the bacteria in the agarose; thus, an environment adverse to the growth of bacteria is formed while a purpose of sterilization is achieved; the prepared fresh-keeping box is environment-friendly, safe, green and pollution-free, low in cost since the plant raw materials are common plant raw materials, simple in production process, and relatively high in application value.

The invention provides a bismuth oxybromide ultra-thin nano sheet photochromic material rich in oxygen vacancies as well as a preparation method and application thereof. The structural formula of the bismuth oxybromide ultra-thin nano sheet photochromic material is BiOBr, the surface of the bismuth oxybromide ultra-thin nano sheet photochromic material is modified with polyvinyl pyrrolidone and mannitol, and the preparation method of the bismuth oxybromide ultra-thin nano sheet photochromic material comprises the following steps: adding a bismuth source, polyvinyl pyrrolidone and mannitol into water, uniformly stirring and mixing, adding an aqueous solution containing a bromine source, carrying out a hydrothermal reaction on the obtained mixed solution, and then washing and drying to obtain the product. The oxygen vacancy-rich bismuth oxybromide ultra-thin nano sheet photochromic material prepared by the invention has the characteristics of small particle size, small thickness, difficulty in agglomeration, good stability, high purity and the like, has the advantages of high mechanical strength, low synthesis cost, no byproduct, no pollution, high thermal stability and chemical stability, suitability for mass production and the like, can be widely applied to the fields of erasable rewriting media, photochromic coatings, silk-screen printing and the like, and has a very high practical value.

Disclosed are an oxygen barrier film, a food wrapper including the same, and a method of preparing the oxygen barrier film. The oxygen barrier film may include: a base layer; and an organic / inorganic hybrid layer located on the base layer and including a natural hydrogel and a silane coupling agent.

The invention relates to a fresh-keeping film and a preparation method thereof. The preparation method for the fresh-keeping film comprises the following steps: to obtain a base layer, wherein the base layer comprises opposite first face and second face; coating a mildew-proof coating on the first face; and coating a separation coating on the second face, to obtain the fresh-keeping film. A double-face coating mode is used in the preparation method, the fresh-keeping coatings are coated on two faces of the base layer, and one face is coated with the mildew-proof coating, and the other face is coated with the separation coating. The fresh-keeping film has the good compactness, and better property of blocking water vapor and air, and has the good anti-mildew bactericidal effect. The fresh-keeping effect of the fresh-keeping film is improved by the synergistic effect of two coatings.

Provided herein are composite scaffold biomaterials including two or more scaffold biomaterial subunits, each including a decellularized plant or fungal tissue from which cellular materials and nucleic acids of the tissue are removed, the decellularized plant or fungal tissue having a 3-dimensional porous structure, the two or more scaffold biomaterial subunits being assembled into the composite scaffold biomaterial and held together via gel casting using a hydrogel glue; via complementary interlocking geometry of the two or more scaffold biomaterial subunits; via guided assembly based biolithography (GAB); via chemical cross-linking; or any combinations thereof. Methods for producing such scaffold biomaterials, as well as methods and uses thereof, are also provided.

Water soluble, gelatin-free dip coatings for substrates comprising a hydrocolloid, such as carrageenan, and sucralose.

The invention discloses a heat-resistant polysaccharide-protein composite film and a preparation method thereof. The heat-resistant polysaccharide-protein composite film is composed of the following components in parts by mass: 10-20 parts of corn starch, 3-8 parts of whey protein, 5-15 parts of wheat starch, 3-6 parts of ACETEM, 1-2 parts of erythritol, 3-7 parts of acetate starch, 2-5 parts of acetyl glyceride, 3-7 parts of pectin, 4-10 parts of agar, 2-5 parts of d-dihydrocarvone, 1-3 parts of malic acid, 1-5 parts of glutamic acid, 1-3 parts of Quillaia saponaria saponin, 1-4 parts of lecithin and 2-6 parts of emulsifier. By using the polysaccharide-protein composite as the film-forming matrix, the prepared polysaccharide-protein composite film has the advantages of favorable stretchability and high transparency, is especially suitable to be coated on fried food, and can obviously lower the free fatty acid content in the food, reduce browning and lower the oil consumption, so that the fried food tastes crisp and delicate.