68results about "Dextran coatings" patented technology

The invention relates to a preparation method of a disposable sweat-absorbing antibacterial glove. The method comprises steeping fluid preparation, degassing, steeping and bonding, drying, secondary steeping and bonding, secondary drying and demolding. Konjac glucomannan is taken as a carrier and other aids are added, so that the disposable sweat-absorbing antibacterial glove has the advantages of excellent film forming property, moisture retention, hydroscopic property, bacterinertness, high tensile strength and high flexibility; the konjac glucomannan is taken as a main material of the disposable environmentally-friendly glove, so that the glove has the advantages of high tensile strength, good wearing effect, high antibacterial efficiency and capability of keeping hands clean and sanitary during long-time operation; the glove can be biologically degraded completely, is environmentally-friendly, and has low carbon content; the glove is hydroscopic and humectant, so that skin is keptin a dry state, and folded skin and hand adhesion caused by palm sweating due to long-time wearing of the glove are avoided; the glove is nontoxic, harmless and resistant to high temperatures, and does not cause the toxin transfer phenomenon of other material gloves such as a PVC (Poly Vinyl Chloride) glove and the like due to direct contact with foods or high-temperature foods; a production process is simple, materials are readily-available, and price is low; and the glove has a certain retention effect on additive pigments.

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.

The present invention relates to liquid chromatographic chiral stationary phases (CSPs) and their preparation. The CSPs are based on carbamate-derivatized polysaccharides that are covalently bound onto inorganic oxide carriers via unique linkage chemistry. The present invention also relates to methods of obtaining the said linkages, which include derivatizing and functionalizing the polysaccharides, and also chemically bonding the functionalized carbamate-derivatized polysaccharides onto inorganic oxide carriers. The polysaccharide derivatives so obtained can be used as materials for the liquid chromatographic chiral separation of enantiomers. The preferred inorganic oxides are silica, zirconium oxide, and aluminum oxide. Cellulose and amylose are the preferred chiral polysaccharides.

The invention discloses edible composite cling film, and a preparation method and application thereof. The composite film is prepared by the following steps: adding a polyvinyl alcohol solution, a chitosan solution, a phenolic acid substance and a plasticizer in an edible polysaccharide Curdlan suspension, adjusting the pH value of the mixed solution to 3-5, carrying out ultrasonic degassing to obtain a film-forming liquid, pouring the film-forming liquid into a polytetrafluoroethylene plate, carrying out heat preservation for carrying out a reaction for 8-10 minutes at a temperature of 90-120DEG C, carrying out sizing, carrying out sterilization treatment, carrying out ultraviolet irradiation treatment for 5-10 minutes, carrying out hot-air circulating drying treatment at a temperature of 90-120 DEG C for 30-60 minutes, and carrying out cooling at a temperature of 4 DEG C to obtain the edible composite cling film. The edible composite film provided by the invention has the advantagesof high tensile strength and high extensibility, has excellent integrity, tensile strength and extensibility after being stewed in boiling water for 1 hour, and can effectively prolong the shelf lifeof fruits, vegetables and the meat products.

The invention relates to a disposable rain-proof antibacterial shoe cover and a preparation method thereof. The preparation method of the disposable rain-proof antibacterial shoe cover comprises the following steps: preparing impregnation liquid, degassing, soaking with a binder, drying, imprinting anti-skidding bottom lines and demoulding. The disposable rain-proof antibacterial shoe cover uses konjac glucomannan as the carrier, also uses other additives, has good film-forming property, water resistance and antibacterial property and also has high tensile strength and good flexibility; compared with the plastic material, konjac glucomannan used as the main material of the disposable environmentally friendly shoe cover has high tensile strength, good wearing effect and good antibacterial effect, thus the cleanness and hygiene of the shoes can be kept when people walk in rain; the shoe cover can be completely biodegraded, the shoe cover is environmentally friendly and low-carbon; the raw materials are common and low in cost; and the production process is simple and the additional pigment can be kept to some extent.

Coating compositions that can provide grease and oil resistant coating for substrates, especially paper and textile substrates, are disclosed. The coating compositions comprise water insoluble α-(1,3→glucan) polymer and/or dextran polymer and optionally other additives.

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.

Polymers containing poly(hydroxyalkanoates) and agents for use with medical articles and methods of fabricating the same are disclosed. The medical article generally comprises an implantable substrate having a coating, and the coating contains a poly(hydroxyalkanoate).

This invention is an aqueous curable binder composition useful as a thermosetting binder for a variety of applications, particularly for substrates that need to retain at least some flexibility. More particularly, the present invention relates to curable aqueous binder compositions comprising at least one water-soluble carbohydrate binder; at least one polyacid crosslinking agent; and one or more high acid polycarboxy emulsion copolymers, as latex modifiers.

A seed or seedling is coated with a cross-linked biopolymer and, optionally, a second binder selected from underivatized guar, cationic hydroxypropyl guar, polyacrylamide, poly(methacrylic acid), poly(acrylic acid), polyacrylate, poly(ethylene glycol), polyethyleneoxide, polyamide, hydroxypropyl guar, carboxymethyl guar, carboxymethylhydroxypropyl guar, underivatized starch, cationic starch, corn starch, wheat starch, rice starch, potato starch, tapioca, waxy maize, sorghum, waxy sarghum, sago, dextrin, chitin, chitosan, xanthan gum, carageenan gum, gum karaya, gum arabic, pectin, cellulose, hydroxycellulose, hydroxyalkyl cellulose, hydroxyethyl cellulose, carboxymethylhydroxyethyl cellulose, or hydroxypropyl cellulose. The seed coating composition is characterized by a dust value, as measured using a Heubach dustmeter device, which is lower by at least 30% as compared to an analogous composition that does not contain the crosslinked biopolymer.

An object of the present invention is to provide a method of producing a current collector for an electrochemical element that enable rapid charging and discharging with low internal resistance. The method of producing a current collector for an electrochemical element in the present invention has a step for coating a coating liquid onto a metal foil, the coating liquid containing at least one substance selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl starch, hydroxypropyl starch, dextrin, pullulan, dextran, guar gum and hydroxypropyl guar gum; an organic acid having valence of two or more or a derivative thereof, carbon particles and an organic solvent, followed by removing the organic solvent and forming a coating layer on the metal foil.

The present invention relates to a fast a simple coating procedure for coating of cell culture and/or handling surfaces to prevent cell adhesion and growth. The invention relates to a cell culture/handling product coated with phenyl dextran, as well as methods of producing and using it.

The invention relates to a preparation method of a liquid covering material for agricultural purposes. The method comprises: mixing 0.01-20?parts of polyethylene glycol, 0.01-10?parts of diacid, 0.01-10?parts of diol, and 0.01-1 part of a catalyst by mole ratio, and subjecting the mixture to a stirring reaction in an oil bath of 50DEG C-250DEG C so as to obtain a compound; by mass, taking 0.1-10 parts of the compound, adding 0.1-20 parts of water soluble cellulose, 0.1-10 parts of a membrane-forming agent, 0.1-10 parts of a surfactant, 0.2-10 parts of a plasticizer, 0.1-10 parts of a wet strength agent, 0.05-5 parts of a stabilizer, 0.1-10 parts of a crosslinking agent and 100-1000 parts of water, and subjecting the mixture to a stirring reaction at 30DEG C-100DEG ; then reducing the pressure to remove foams, and conducting cooling to room temperature; and adding water to perform dilution, and carrying out filtration, thus obtaining the liquid covering material. The liquid covering material for agricultural purposes prepared in the invention can disperse or dissolve in water, can coagulate into a membrane after being sprayed in soil and can achieve a good effect. The prepared material has the characteristics of low economic cost, no residue, no toxicity and harmlessness.

Hydrogel polymer blends including precursors and crosslinked forms of the compositions. The blends provide an improved approach to achieve high quality, uniform coatings with better commercial viability than other approaches including copolymerization. Applications include mass spectral analysis of biomolecular analytes such as proteins. Dextran and acrylamide systems are preferred. Benzophenone groups can be used as photocrosslinking groups. Photoinitiators are not needed. Functionalities which can selectively bind to biomolecular analytes are included.

The invention relates to the field of coating and discloses a water-resistant net-flavor waterborne ceramic simulating coating and a preparation method thereof. The coating comprises the following components in parts by mass: 10-20 parts of calcite powder, 10-20 parts of heavy calcium carbonate powder, 8-12 parts of calcium carbonate, 2-4 parts of bletilla striata powder, 1-3 parts of corn starch, 0.5-1.5 parts of carboxymethyl cellulose, 0.5-1.5 parts of phenoxy resin, 0.5-1.5 parts of glutaraldehyde, 1-3 parts of air purifying particles and 45-55 parts of water. The water-resistant net-flavor waterborne ceramic simulating coating provided by the invention has the advantages of relatively good water resistance, air purifying function, large adsorption capacity, long purifying time and good air purifying effect.

The invention belongs to the technical field of auxiliary consumables of preventive medicine, particularly relates to a liquid mask plaster and further discloses a preparation method of the liquid mask plaster and an anti-haze and anti-bacterial mask comprising the liquid mask plaster. The liquid mask plaster is prepared from raw materials as follows: konjac glucomannan, gomuti palm powder, sodiumalginate, bacterial cellulose, ethanol, propolis, laurocapram, glycerin, ethyl acetate and cyclodextrin, functional particles with adsorbing and/or photocatalytic decomposition effects as well as Chinese herbal medicinal ingredients with traditional Chinese medicine bacteriostatic and/or anti-virus effects are added, so that the liquid mask plaster can realize rapid curing film formation on the surface of the outer side of a conventional mask, an effective filtration barrier for pollutant particles and/or bacteria and viruses is formed, inhalation of pollutants such as haze particles and thelike can be effectively prevented, and droplet transmission of the bacteria and viruses can be effectively prevented.

Paint configured to provide a hydrophilic paint surface comprising a paint base and a texture imprinting additive (TIA) that provides sacrificial particles upon drying of the paint. Loss of the sacrificial particles increases roughness and reduces the contact angle with water, providing a hydrophilic surface that is wettable and hence self-cleaning. Also described are specific types of TIA, methods of making the paint, methods of making a hydrophilic surface, and kits.

The invention relates to a novel environment-friendly anti-corrosion coating used on the surface of a metal and application of the novel environment-friendly anti-corrosion coating, and belongs to the technical field of metal corrosion prevention. The novel environment-friendly anti-corrosion coating used on the surface of the metal consists of the following raw materials in parts by weight: 0.5-3.0 parts of dextran and 0.5-3.0 parts of albumin bovine. The application of the novel environment-friendly anti-corrosion coating used on the surface of the metal is that 0.05-0.30 part by weight of dextran and 0.05-0.30 part by weight of albumin bovine are added into 100 parts by weight of water, and are stirred at the room temperature so as to obtain the anti-corrosion coating; carbon steel is soaked in the anti-corrosion coating for 12-36 hours at the room temperature, and is subsequently and naturally dried for 15-30 hours at the room temperature. The novel environment-friendly anti-corrosion coating used on the surface of the metal is free of toxic substance, green and environment-friendly in the production, storage and use procedures, and is harmless for human bodies; when the mass ratio of dextran to albumin bovine is 2.0:1.3, the anti-corrosion property of the carbon steel can be improved by 60%.

The invention discloses device and method for producing marine organism shell powder coating and the marine organism shell powder coating, and belongs to the technical field of shell powder. The device for producing the marine organism shell powder coating comprises a colloid processing device, a dry powder raw material processing device, a mixing device, a colour modulation device and an anionic water generation device, wherein the discharge openings of the colloid processing device and the dry powder raw material processing device are connected to the mixing device, and the discharge opening of the mixing device is connected to the colour modulation device; the dry powder raw material processing device comprises a dry powder raw material decomposing device and a dry powder raw material dispersing device which are sequentially connected; the colloid processing device, the dry powder raw material processing device, the mixing device and the colour modulation device are all connected with the anionic water generation device. Compared with the prior art, the device for producing the marine organism shell powder coating is a set o device specially designed for the production of the marine organism shell powder coating and is capable of producing the high-quality marine organism shell powder coating.

The invention discloses a method for preparing a corn inner skin natural adhesive, belonging to the technical field of adhesives. The method comprises the following step of: with corn inner skin as a raw material, carrying out ultramicro crushing on the corn inner skin to more than 300 meshes, soaking the ultramicro crushed corn inner skin in alkali liquid with the concentration of 10-20%, stirring for 6-24h to have quaternization, carrying out one or more chemical modification reactions of oxidation, carboxy methylation, acetylation or phosphate esterification and cationic etherification on the raw material with chemical reaction activity, and controlling substitution depth of the reactions to prepare natural adhesive products with different indexes and performances, which can be gelatinized in hot water and dissolved in cold water. The method for preparing the corn inner skin natural adhesive, disclosed by the invention, has the advantages that the prepared adhesive has good adhesiveness and strong filming capability, the slurry film has excellent ductility and smoothness, and the elasticity and the mechanical strength of the starch slurry film can be remarkably improved when the prepared adhesive and the modified starch are used together; the source of the raw material is wide, the raw material is low in cost, the additional value of the starch processing is further increased, and economic benefits of enterprises are increased.

The invention relates to the technical field of aluminum alloy templates, in particular to an easily-demoulded aluminum alloy template and a preparing method thereof. The aluminum alloy template comprises an aluminum alloy base body and a demoulding layer attached to the surface of the aluminum alloy base body. Raw materials for preparing the demoulding layer include, by weight, 1-5 parts of polyvinyl alcohol, 4-6 parts of stearic acid, 3-5 parts of octadecanamide, 4-8 parts of konjac glucomannan, 15-20 parts of konjaku flour, 15-20 parts of sodium alga acid, 1-3 parts of sodium borate, 5-7 parts of modified shell powder, 5-10 parts of modified silicon dioxide, 2-4 parts of aluminum sulfate, 2-6 parts of sodium methyl silicate, 1-3 parts of sodium dodecyl sulfate and 0.3-0.7 part of organic silicon defoamer. The demoulding layer is directly formed on the surface of the aluminum alloy base body, demoulding is easier, the cyclic usage frequency is larger, the concrete demoulding qualityis improved to a certain degree, and the demoulding efficiency of the aluminum alloy template is improved.