33results about "Agar-agar coatings" patented technology

The invention belongs to the technical field of marine anti-drag materials, and particularly relates to a porous anti-drag coating and a preparation method thereof.The method comprises the steps that a substrate is coated with a mixed solution of natural polymers, cellulose nanocrystals, a two-dimensional nanomaterial and water and then soaked in a metal salt solution for a certain time, and a cross-linked coating is formed; the preparation method comprises the following steps: taking out the porous cross-linked coating, treating the porous cross-linked coating by using a directional freezing casting technology, soaking the porous cross-linked coating in an organic-inorganic mixed solution for a certain time, removing inorganic salt in the porous cross-linked coating after taking out the porous cross-linked coating, and performing hot pressing on the porous cross-linked coating to obtain the porous anti-drag coating. The organic-inorganic mixed solution is obtained by mixing a silane coupling agent, an inorganic precursor, inorganic salt, an adhesive polymer and an organic solvent. The finally obtained porous anti-drag coating has the characteristics of hardness and softness, rough surface, good mechanical stability, obvious micro vortex and excellent anti-drag performance.

A living paint comprises a living photosynthetic microorganism, binder, growth medium, and water. The microorganism may comprise algae, cyanobacteria, or lichens. The binder may be composed of primary

The present invention provides materials and composite materials comprising layer (A) comprising afirst polysaccharide which has been derivatised to comprise fatty acid ester moieties. Also provided are substrates coated with the material and composite material, and processes for preparing the material, composite material and coated substrate.

A substrate with a surface coating comprising a single layer polysaccharide derivatised with fatty acid ester moieties; the saccharide derived from seaweed and the substrate comprising packaging mater

Provided 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 application relates to a heat-resistant stainless steel pipe, the chemical composition of which comprises C, Si, Mn, P, S, Cr, Ni, Mo, Nd, Ce, iron and impurities; the surface of the stainless steel pipe is coated with a heat-resistant coating which comprises the following components: thermosetting phenolic resin, 4-chloro phthalic acid, agarose, branched polyethylene imine, a catalyst, a curing agent, 4-N,N-dimethylpyridine and dimethylformamide; and relates to a processing technology of the heat-resistant stainless steel pipe. The thermosetting phenolic resin has good heat resistance, the agarose makes the heat-resistant coating form a compact protective layer, the esterification product of 4-chloro phthalic acid and agarose has a benzene ring rigid group, 4-N,N-dimethylpyridine activates the carboxyl group of 4-chloro phthalic acid, the polymerization product obtained by the reaction of 4-chloro phthalic acid and branched polyethylene imine, and the synergistic effect of the components each containing a rigid group, effectively improve the heat resistance of the coating.

Provided herein is a composite scaffold biomaterial comprising two or more scaffold biomaterial subunits, each comprising decellularized plant or fungal tissue, from which cellular material and nucleic acids have been removed, and the decellularized plant or fungal tissue has a three-dimensional porous structure, where the two or more scaffold biomaterial subunits are assembled into the composite scaffold biomaterial and held together by gel casting using a hydrogel adhesive; by complementary interlocking shapes of the two or more scaffold biomaterial subunits; by guided assembly-based biolithography (GAB); by chemical crosslinking; or any combination thereof. Also provided are methods for producing such a scaffold biomaterial, as well as methods and uses thereof.

The invention relates to a composition with a marine or limnic filler, a composite and an object coated with a composite in form of a coating.

The invention relates to a composition, a composite, and an object coated with a composite in the form of a coating.

To provide an improved scaffold biomaterial.SOLUTION: Provided is a composite scaffold biomaterial 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 a scaffold biomaterial, as well as methods and uses thereof, are also provided.SELECTED DRAWING: None

An artificial flower, plant, or other botanical is produced from an aqueous agar-based solidifying mixture. The artificial botanical may be colored as desired by adding one or more colorants. The artificial botanical may also be scented by adding a perfume, odorant, or other scent. Because the artificial botanical is produced using the aqueous agar-based solidifying mixture, no animal-based gelatin products are used. The artificial botanical may thus also be edible and satisfies vegan diets. The artificial botanical may thus also be flavored by adding a flavoring, such as fruit, concentrate, or sweetener. The artificial botanical may be all-natural and edible by adding mica powder as the colorant and by adding glycerin as the flavoring.

A capsule, especially for preparing a beverage from beverage powder, in particular of coffee from coffee powder, by introducing water into the capsule, wherein the capsule comprises a compacted pellet made of a powder containing at least one polysaccharide, wherein the compacted pellet is sheathed with at least one coating layer, wherein the at least one coating layer comprises a cross-linked polysaccharide, wherein the cross-linked polysaccharide can be obtained by cross-linking a polysaccharide with a cross-linking agent without the use of a polyol spacer.A method for manufacturing such a capsule comprises the following steps:i) preparing a compacted pellet from a powder containing at least one polysaccharide,ii) bringing at least one part and preferably the entire surface of the compacted pellet used in step i) into contact with a solution of a polysaccharide in a solvent or with a dispersion of a polysaccharide in a dispersant,iii) when appropriate, removing of the compacted pellet from the solution or dispersion of step ii),iv) bringing the compacted pellet obtained in step ii) or iii) into contact with at least one cross-linking agent,v) when appropriate, removing the compacted pellet from the solution of step iv) andvi) drying of the compacted pellet obtained in step iv) or v).

Compostable seaweed-based thin films, and associated systems and methods are disclosed herein. In some embodiments, an exemplary seaweed-based thin film comprises a seaweed-based composition comprising agar, alginate, carrageenan, semi-refined seaweed, and / or unprocessed seaweed; an agent comprising glycerin, sorbitol, sodium lignosulphonate, potassium lignosulphonate, calcium lignosulphonate, ammonium lignosulphonate, lignosulphonate, citric acid, ascorbic acid, ethylene glycol, polyethylene glycol, polyglyceride fatty acid esters, guar gum, tributyl citrate, and / or propylene glycol; and water. The seaweed-based composition can comprise 50-90 wt % of the seaweed-based thin film, the agent can comprise no more than 40 wt % of the seaweed-based thin film, and the water can comprise 0.1-50 wt % of the seaweed-based thin film.

To provide an improved scaffold biomaterial.SOLUTION: Provided is a composite scaffold biomaterial 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 a scaffold biomaterial, as well as methods and uses thereof, are also provided.SELECTED DRAWING: None

A composite material comprising at least one layer A comprising a first polysaccharide derivatised with compose a fatty acid ester moiety and at least one layer B comprising an underivatized polysacch

The present application belongs to the technical field of marine drag reduction materials, and particularly relates to a porous drag reduction coating and a preparation method thereof. The method comprises the following steps: coating a mixed solution of a natural polymer, cellulose nanocrystals, two-dimensional nanomaterials and water on a substrate, then immersing the substrate in a metal salt solution for a certain period of time to form a crosslinked coating, taking out the substrate, processing the substrate by using a directional freezing casting technology, immersing the substrate in an organic-inorganic mixed solution for a certain period of time, taking out the substrate, removing inorganic salts in the substrate, obtaining a porous crosslinked coating, and hot-pressing the porous crosslinked coating to obtain a porous drag reduction coating. The organic-inorganic mixed solution is obtained by mixing a silane coupling agent, an inorganic precursor, an inorganic salt, a gluey polymer and an organic solvent. The porous drag reduction coating obtained finally has the characteristics of rigidity and softness, a rough surface, good mechanical stability, obvious micro-eddy current and excellent drag reduction performance.

In an example of the method, a functionalized coating is applied in a recess of a patterned flow cell substrate. The recesses are separated by spacer regions. Primers are grafted onto the functionalized coating to form a grafted functionalized coating in the recess. A hydrogel is applied over at least the grafted functionalized coating.

The application provides a preparation method of a near-infrared light responsive MXene hydrogel film intelligent cell culture container, and solves the problems of complex preparation process, long cycle, high cost, low efficiency, poor biocompatibility and poor stability of the existing near-infrared light responsive cell culture container. The hydrophilic treatment of the cell culture container (substrate) increases the number of hydroxyl groups on the surface, thereby increasing the bonding force between the MXene hydrogel film and the cell culture container, making it more stable. First, a relatively mild method is used to synthesize MXene suspension. MXene has good photothermal effect. Then, the MXene is stirred uniformly with low-melting-point agarose and polyvinyl alcohol (PVA) which has good biocompatibility. A certain thickness of film is obtained on the cell culture container by spin coating, and the final product is obtained by using the cycle freezing and thawing.

A surface coating method comprises heating a coating solution comprising a gelling agent, at least one sulfate salt and water to a temperature above the melting temperature of the gelling agent but below 100C. The heated coating solution is applied onto a plastic surface (12). The coating solution is dried on the plastic surface (12) to obtain a pre-coated plastic surface, onto which a liquid hydrogel is applied. The liquid hydrogel is solidified to form a solid hydrogel (30) adhering to the pre-coated plastic surface. The surface coating (20) enhances the adherence between the solid hydrogel (30) and the plastic surface (12).

The invention discloses a cooling and harm-reducing material for heating cigarettes, a preparation method of the cooling and harm-reducing material and the heating cigarettes, and belongs to the technical field of tobaccos. The preparation method provided by the invention comprises the following steps: heating and dissolving a natural polymer material and choline ionic liquid to form a uniform solution; the mass fraction of the natural high polymer material is 3-15 wt%; and coating an internal base material of a heated cigarette with the solution while the solution is hot, and cooling to room temperature to obtain the temperature-reducing and harm-reducing material for heating the cigarette. The preparation method is very simple, the prepared cooling and harm reducing material for heating the cigarettes can effectively reduce the smoke temperature and reduce harmful gas release, meanwhile, liquid leakage is avoided in the application process, and high safety is achieved.

A surface coating method comprises heating a coating solution comprising a gelling agent, at least one sulfate salt and water to a temperature above the melting temperature of the gelling agent but below 100C. The heated coating solution is applied onto a plastic surface (12). The coating solution is dried on the plastic surface (12) to obtain a pre-coated plastic surface, onto which a liquid hydrogel is applied. The liquid hydrogel is solidified to form a solid hydrogel (30) adhering to the pre-coated plastic surface. The surface coating (20) enhances the adherence between the solid hydrogel (30) and the plastic surface (12).

A self-disinfecting coating (1) for surfaces: is provided that includes a base matrix (2) and a loading solution (3), the matrix (2) in turn includes a gel base (10) and a gel fluid (7), and the loading solution (3) comprises an active disinfectant ingredient (4), in such a way that the base matrix (2) is able to absorb and retain the active ingredient (4) while maintaining, on the free surface of the coating (1), a sufficient concentration of active ingredient (4), thus maintaining the surface disinfected. The gel base (10) may include a protein of collagen, albumin or elastin and glycerine as the plasticising agent (6). The loading solution (3) may include elemental iodine as an active ingredient (4) and ethanol as the loading solvent (8). The self-disinfecting coating (1) may include a base substrate (11) that includes therein the base matrix (2) and loading solution (3).

The invention relates to a composition with a marine or limnic filler, a composite and an object coated with a composite in form of a coating.

A surface coating method comprises heating a coating solution comprising a gelling agent, at least one sulfate salt and water to a temperature above the melting temperature of the gelling agent but below 100 #C. The heated coating solution is applied onto a plastic surface (12). The coating solution is dried on the plastic surface (12) to obtain a pre-coated plastic surface, onto which a liquid hydrogel is applied. The liquid hydrogel is solidified to form a solid hydrogel (30) adhering to the pre-coated plastic surface. The surface coating (20) enhances the adherence between the solid hydrogel (30) and the plastic surface (12).

A living paint composition for application to a surface, comprising a living photosynthetic microorganism, a binder, a growth medium, and water is provided. Also provided is a method of making the living paint composition, involving incorporating a living photosynthetic microorganism into a composition comprising water and a binder which is at least partially set to disperse the living photosynthetic microorganism throughout the composition. Methods of painting a substrate with the living paint compositions and painted substrates, and methods and use of the living paint composition for increasing the carbon dioxide absorption capacity of a substrate, are also provided.

The present invention provides materials and composite materials comprising layer (A) comprising a first polysaccharide which has been derivatised to comprise fatty acid ester moieties. Also provided are substrates coated with the material and composite material, and processes for preparing the material, composite material and coated substrate.