146results about "Cellulose derivative coatings" patented technology

A refractory far infrared paint is prepared from zirconium oxide, Cr2O3, refractory clay, bentonite, TiO2 powder, brown corundum, iron oxide, silicon carbide, adhesive PA80 or water glass and carboxymethyl cellulose through proportional mixing, and nano-class superfine processing. Its advantage is high emissivity (0.93) at high temp.

The invention relates to a method for manufacturing a biodegradable composition containing nano-particles of cellulose for forming a protective coating on natural materials. It is an object of the invention to provide a composition for forming a protective coating layer on a biodegradable natural material that imparts to the material improved waterproofing and grease-resistant properties. It is another object to provide a composition for forming a protective coating on natural biodegradable materials that is based on the use of nano-cellulose particles and that protects these materials from swelling, warping, and mechanical damage during contact with water, other aqueous liquids, or grease.

Anti-reflective compositions are prepared from cellulosic binders with improved etch rates.

The invention relates to a anti-fogdrop painting composition, which includes four components of A, B, C and water, A is colloid aluminum oxide and content thereof is 0.9-3.6%, B is polyoxyethylene-containing non-ion surfactant and content thereof is 0.1-0.5%, C is water-soluble cellulose derivative adhesive and content thereof is 0.01-0.04%, and residual component is water. The composition possesses good dispersivity and placing stability, low viscosity, and small particle diameter; can reach to painting demand without grinding of colloid mill; and can endow thin film after coating to polyethylene thin film with good initial anti-fog property and long anti-drop validity period of at least three years. The invention also discloses preparation method for the anti-fogdrop painting composition, which is simple, low-cost and pollution-free to environment.

This invention relates to rapid drying lacquers that are particularly useful for automotive OEM refinish applications. The lacquer includes a novel highly branched copolyester polyol. This invention is also directed to a process for producing coatings from the rapid drying lacquers. These lacquers are especially useful in providing for chip and humidity resistant coatings having improved adhesion.

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.

Provided is a porous film that can contribute to improving the cycle characteristics of an electric cell by improving binding characteristics, for a porous film provided on a surface of an electrode used in a secondary cell and the like. The porous film comprises a water-soluble polymer, an inorganic filler, and a water-insoluble particulate polymer including 0.5-40 mass % of a monomer unit having a hydrophilic group selected from the group consisting of carboxylic acid groups, hydroxyl groups, and sulfonate groups.

The invention discloses an environment-friendly heat-resistant waterborne polyurethane coating. The raw materials of the waterborne polyurethane coating comprise the following components in parts by weight: 50-80 parts of modified waterborne polyurethane, 10-30 parts of waterborne acrylic resin, 10-20 parts of epoxy resin, 5-8 parts of aliphatic polyisocyanate, 15-30 parts of organically modified clay, 8-20 parts of modified nano-cellulose, 5-20 parts of silk fibroin, 3-8 parts of nanometer titanium dioxide, 10-18 parts of nanometer montmorillonite, 5-8 parts of vegetable oil, 1-1.8 parts of glycerol, 0.5-1.8 parts of ethylene glycol propyl ether, 0.8-1.9 parts of propylene glycol monomethyl ether, 0-1.5 parts of pentaerythritol, 1-3 parts of organosilicone microspheres and 3-6 parts of modified carbon nanotubes. The environment-friendly heat-resistant waterborne polyurethane coating disclosed by the invention has the advantages of good heat resistance, strong water resistance, high hardness and long service life.

A building exterior wall coating with good thermal insulation property is characterized by the compositions of polyvinyl alcohol, expanded perlite, aluminium silicate powder, oyster shell whiting, methylcellulose, glass microballoon, fiber glass, nanometer silicon dioxide, acryloid cement, elm bast fiber, an antifoaming agent and calcium carbonate. By virtue of methyl silica high polymer formed after the reaction among heated silicate, nanometer silica powder and organosilicone, the coating can form the binding of chemical bonds when being coated on the rigid surface of a concrete wall, with the fastness being far superior to that of the physical covering of a conventional coating; in the coating, the expanded perlite is further adopted as heat insulation base material and therefore, the coating is characterized by good waterproof and thermal insulation property, no bubbling and cracking and good adhesive force.

The invention discloses a high-resistance polymer coating fluid which is prepared from the following components of: 6-18 percent by weight of water-soluble high polymer with high hydroxyl density, 0.45-1.2 percent by weight of cross-linking agent, 0-7 percent by weight of nano size metal oxide, 0.01-2.5 percent by weight of viscosity modifier, 0.1-6 percent by weight of polymer dispersant, 0-1.3 percent by weight of coupling agent, 1-28 percent by weight of drying regulator and 40-92.44 percent by weight of water. The multi-component environment-friendly coating fluid prepared in the invention has excellent oxygen resistant performance under the condition that a thinner coating is formed and simultaneously has the advantages of simple preparation process and stable performance.

An objective is to provide a cellulose ester film which can reduce a manufacturing burden and a facility burden caused by drying and recovering of a solvent used in the production process, a manufacturing method of the cellulose ester film and an optical film, and to specifically provide a polarizing plate employing the optical film as an excellent polarizing plate protective film exhibiting reduced fluctuation of retardation property in the width direction and a liquid crystal display employing the polarizing plate. Also disclosed is a cellulose ester film containing at least one compound having a phenol structure and a phosphite ester structure in a molecule.

A method of producing a medical instrument whereby a highly hydrophilic and lubricant coating layer having a high durability can be formed by a simple technique and thus highly hydrophilic and lubricant properties can be imparted to a surface of a medical instrument. An intraocular lens insertion instrument having been subjected to a surface treatment as described above is also provided. The method comprises the steps of: preparing a coating solution by mixing at least a water-insoluble polymer having carboxyl group and a polyfunctional reactive compound with an organic solvent; applying this solution on the surface of the medical instrument; conducting crosslinking; and performing a chemical reaction process whereby the coating layer is made hydrophilic. The intraocular lens insertion instrument is made hydrophilic by forming the coating layer as described above on an inner surface of an insertion tube portion, crosslinking and then performing the chemical reaction process.

Provided is a collagen-cellulose material containing, based on a total weight of the collagen-cellulose material: 1.0-9.0 wt. % of a collagen; 0.2-3.0 wt. % of cellulose or a derivative thereof; 0.5-6.5 wt. % of at least one acid selected from an inorganic acid, an organic acid, and mixtures thereof; and water. Also provided is a process for producing the collagen-cellulose material. Also provided is an artificial blood vessel containing the collagen-cellulose material which is in the form of a hollow tube, an artificial tissue containing the collagen-cellulose material which is in the form of a sheet, and an artificial bone containing the collagen-cellulose material which is in the form of a solid. Also provided is a medical device containing the collagen-cellulose material, as well as a process for testing phlebotomical, surgical or orthopedic instrumentation or practicing phlebotomical, surgical or orthopedic procedures using the medical device containing the collagen-cellulose material.

There is provided a coating liquid capable of forming a coating film that is excellent in adhesiveness to the surface of a base material such as a metal, glass, or a resin even though the coating film contains PVDF which exhibits a remarkable non-tackiness and that can exhibit various desired functionalities such as non-tackiness, an antifouling property, chemical resistance, a sliding property, water repellency, electrical conductivity, an antifungal/antimicrobial property, and a deodorizing property. The coating liquid contains a polar solvent such as N,N-dimethylformamide or N-methyl-2-pyrrolidone, a hydrophilic polymer such as a chitosan derivative or a cellulose derivative, and polyvinylidene fluoride.

The present invention provides a processed biodegradable article having excellent water resistance and rigidity, which can be used as a food container, and a biodegradable composition required to produce the processed biodegradable article.

The respective components are mixed such that the content of starch is 15% by mass or more and 75% by mass or less, the content of protein is 5% by mass or more and 50% by mass or less, the content of cellulose fiber is 3% by mass or more and 50% by mass or less, the content of polyphenols is 0.5% by mass or more and 20% by mass or less, and the content of sodium chloride is 0% by mass or more and 5% by mass or less, and then water is added in the amount of 10 parts by mass or more and 100 parts by mass or less based on 100 parts by mass of the mixture, followed by kneading the mixture using a mixer. Then, the kneaded mixture is press-molded into a predetermined shape such as a cup or a dish, and heat-treated at 120° C. or higher and 180° C. or lower to obtain a processed article having excellent biodegradability.

The present invention provides a formed article, or more specifically a transparent substrate, which effectively utilizes a natural stuff and which has a low linear expansion coefficient, a high light transmittance and an appropriate level of moisture permeability. The transparent substrate includes at least an oxidized polysaccharide and has a linear expansion coefficient of 50 ppm/° C. or less at 30-150° C. and a light transmittance of 70% or more at 660 nm. Its manufacturing method includes an oxidation process in which cellulose reacts with TEMPO or its derivatives as a catalyst to be oxidized in water under the presence of a co-oxidant, along with a fiberizing process in which the oxidized cellulose is fiberized in water to form a cellulose fiber, and a substrate-forming process in which a transparent substrate is formed from a cellulose dispersion liquid containing the cellulose fiber.

The present invention relates to adurable and multifunctional superhydrophobic coating composition and water based fabrication method of producing the durable and multifunctional superhydrophobic coating composition via chemical modification and functionalization of hydrophilic material by silanes under room temperature without any organic solvents. Synthesis of chemically modified cellulose nanofibers or clay in water forms excellent water repelling thin films upon coating over various substrates. The super hydrophobic materials are used as additive for paints, pigments, paper, varnish and, textile and used for various industrial applications such as construction of buildings and other super structures.

The invention provides an ultraviolet curing coating raw material and a coating prepared from same. The ultraviolet curing coating raw material comprises the following components in parts by weight: 10-20 parts of six-functional aliphatic polyurethane acrylic resin, 5-10 parts of three-functional aliphatic polyurethane acrylic resin, 10-15 parts of self-initialized ultraviolet curing resin, 2-8 parts of metal effect pigment, 2-15 parts of UV cured crylic acid double-bond celluosic resin, 0.01 part of a polymerization inhibitor, 1-6 parts of adhesion property prompting resin, 5 parts of extinction powder, 2-5 parts of a photoinitiator, 25-60 parts of a diluent and 0.01-0.5 part of an additive, wherein the self-initialized ultraviolet curing resin is DRE-527 purchased in Changxin in Taiwan. Due to addition of acrylic monomers, the reaction speed of the pigment with metallic effects and the acrylic monomers can be increased due to the groups in the acrylic monomers, and due to cross-linking reaction of the UV cured crylic acid double-bond celluosic resin with a double-bond orientation function and the UV resin with double bonds, the cross-linking density of the coating can be improved; due to addition of the polymerization inhibitor, problems such as flocculation and retrogradation can be solved when the coating is stored.

An object of the invention is to provide a liquid clay allowing paintings to be freely made on a painting media such as a drawing board or cardboard with a spatula, and whereby the picture that has been painted presents a texture similar to that of an oil painting. This is characterized in that it is produced as a result of adding fine vegetable powder and sodium alginate or an equivalent material to an aqueous solution of CMC (carboxymethylcellulose) or an equivalent material and kneading, so as to prepare a liquid clay body in a state suitable for spatula application, and in that pigment is added to this liquid clay body.