65results about "Starch dervative coatings" patented technology

The invention discloses a water-based paper barrier coating and a method for improving the barrier property of a packaging material. The packaging material includes a substrate having a coating to provide a packaging material having tailored water vapor permeability, oxygen permeability or permeability, grease resistance properties, and light properties.

The present invention relates to the use of a starch derivative, in which the starch derivative is partially acetylated and partially acylated with at least one fatty acid, as an additive in a coating composition, and to a starch derivative which is partially acetylated and partially acylated with at least one fatty acid, in which the starch derivative has an MW of 3000 to 5000 g / mol.

The invention provides a sealing coating, a preparation method thereof, a coating and application thereof, and belongs to the technical field of sealing materials. Pits formed by interweaving the surface fibers can be filled with the filler, so that the adhesive lines are firmly adhered; the filler has heat resistance and has an anti-sticking effect; the coupling agent modified filler solution is adopted, so that the adhesion firmness of the glue line on the surface of the material can be improved; the coupling agent modified sodium carboxymethyl cellulose solution is adopted, so that the hydrophilic performance of macromolecular substances can be reduced, and an adhesive is partially crosslinked under the action of the coupling agent, so that cylinder sticking is avoided; the surface of an uncoated base material adsorbs water, a water molecule film is formed on the surface, after the sealing coating is adopted, a coupling agent is in contact with the water on the surface of the base material and is hydrolyzed to generate a hydroxyl group, the hydroxyl group and a polar hydroxyl group on the surface of the base material are subjected to a condensation reaction to form a hydrogen bond or a-SiO-Me covalent bond, and the water molecule film is formed. An R group in the coupling agent can react with free hydroxyl of rubber to form a net structure, so that rubber lines are prevented from cracking and falling off.

The present invention relates to a polymer dispersion and its use. The dispersion comprises polymer in particle form dispersed in an aqueous liquid phase. The polymer particles are obtained by a radical polymerisation of monomers in a presence of a dissolved rosin component, in an aqueous polymerisation medium comprising a polymeric stabilizer. The monomers comprise a first monomer (i) selected from alkyl (meth)acrylates and a charge-carrying second monomer (ii) having a cationic charge, when measured at pH 3, selected from ethylenically unsaturated tertiary amines.

The invention relates to the technical field of printing coatings, and provides a transfer printing coating and a preparation method thereof. The preparation method comprises the following steps: S100, performing esterification reaction on starch under an alkaline condition to obtain esterified starch; carrying out pre-crosslinking treatment on the esterified starch and a first crosslinking agent to obtain modified functional starch; s200, carrying out mechanical pretreatment and chemical functionalization treatment on the cellulose raw material to obtain functionalized nano cellulose hydrogel; and S300, mixing the modified functional starch, the functionalized nanocellulose hydrogel and a second cross-linking agent to obtain the transfer printing coating. After being subjected to pre-crosslinking treatment, the modified functional starch has better stability and shear degradation resistance, and meanwhile, the rheological properties required by gelatinization and coating are reserved; after the nano cellulose is subjected to surface functionalization, the dispersity is improved, the interfacial compatibility is improved, and a mechanical enhancement and blocking network is provided, so that a coating film has high transfer efficiency and good surface smoothness in the transfer printing process.

The present application relates to the technical field of starch coating, in particular to a preparation method of structured starch coating liquid with oil-proof and moisture-absorbing dual functions. The method comprises the following steps: firstly, performing mild acidolysis or selective oxidation pretreatment on cassava starch; then, preparing starch milk by using the pretreated starch, and performing synergistic enzymolysis on the starch milk under mild conditions by using a composite enzyme composed of alpha-amylase and glucoamylase in a specific ratio; after the enzymolysis, performing enzyme inactivation treatment, and then adding a bio-based crosslinking agent for compounding. The prepared coating has a specific bimodal distribution structure of starch derivative molecular weight, which is a key to realize function balance. After the coating liquid is coated on a substrate such as paper and dried and solidified, the formed coating not only has excellent oil-proof performance, but also exhibits good water vapor absorption capacity. The raw materials of the present application are green and the process is environmentally friendly, and the prepared multifunctional coating can be effectively applied to the fields of food packaging, medical protection and other fields which need to resist oil and regulate humidity at the same time.

The invention discloses a flame retardant and a preparation method thereof, and relates to the technical field of flame retardants, and the flame retardant comprises the following components by mass: 10-20 parts of hydroxypropyl methyl cellulose; 5 to 10 parts of xanthan gum; 6 to 12 parts of modified starch; 10 to 12 parts of sesbania gum powder; 2-5 parts of lauryl sodium sulfate; 41 to 67 parts of water; uniformly mixing hydroxypropyl methyl cellulose and modified starch to prepare a mixed reagent; dissolving xanthan gum and sesbania gum powder in water, and uniformly mixing to prepare a mixed solution; uniformly mixing and fusing the mixed reagent prepared in the step 1, the mixed solution prepared in the step 2 and water; adding lauryl sodium sulfate into the mixed solution, uniformly mixing and fusing; stirring for 0.5 h until all the reagents and the solution are uniformly mixed, so as to synthesize the flame retardant; the flame retardant solution is uniformly sprayed on the surface of a coal pile to form a cured covering layer for isolating air, so that coal oxidation is effectively prevented.

[Problem] To provide an aqueous-emulsion oil-resistant coating material excellent in terms of air permeability, oil resistance, and carbon neutrality, by using a bio-derived component as a main component. [Solution] An aqueous-emulsion oil-resistant coating material comprising component (a), which is hydrogenated castor oil and / or rice wax, component (b), which is poly(vinyl alcohol) and / or casein, and water; a method for producing paper, characterized by applying the aqueous-emulsion oil-resistant coating material; and paper having a coating layer including the aqueous-emulsion oil-resistant coating material.

The present invention relates in particular to an adhesive composition comprising i) microfibrillated cellulose and ii) at least one metal in oxidation state II or higher. The invention further relates to the use of such an adhesive composition and to products produced using such an adhesive composition. Furthermore, the invention relates to a method for producing corrugated paperboard or cardboard or solid paperboard or cardboard by using such an adhesive composition.

The invention discloses a built-in efficient formaldehyde removal coating which comprises a putty powder layer and an emulsion paint layer. The latex paint layer is prepared from the following raw materials in parts by weight: 18 parts of water, 0.25 part of cellulose, 0.15 part of a PH regulator, 0.4 part of a dispersing agent, 0.2 part of a wetting agent, 0.2 part of a defoaming agent, 20 parts of titanium dioxide, 12 parts of inorganic filler, 1.5 parts of a coalescing agent, 28 parts of organic silicon emulsion, 0.15 part of a thickening agent, 0.18 part of a high-temperature preservative, 2.0 to 5 parts of aldehyde removal powder and 1 to 5 parts of manganese oxide. Through the synergistic effect of the formaldehyde removal powder and the manganese oxide, the formaldehyde in the air is effectively removed by utilizing chemical reaction and catalytic oxidation mechanisms. And the manganese oxide does not generate harmful byproducts in the process of catalytically decomposing formaldehyde, so that the safety and the environmental protection property of the coating are ensured. According to the construction method, natural materials such as shell powder and white cement are adopted, so that the method is relatively environment-friendly and non-toxic, and the influence on the indoor air quality and the health of residents is small.

The invention discloses an environment-friendly printing process of a waterproof corrugated board, and relates to the technical field of corrugated boards. The water-based ink layer is subjected to pre-emulsification and polymerization reaction, double bonds and acrylic monomers are introduced for copolymerization, small molecule migration is avoided through free radical polymerization reaction, the water resistance is remarkably improved, the thermal stability is improved, and the wear resistance and the scratch resistance are enhanced; the environment-friendly glue layer takes renewable corn starch as a main raw material, so that the environmental protection property is greatly improved, the modified waterborne polyurethane not only greatly improves the mechanical strength of the glue film, but also improves the toughness and adhesive force by virtue of a compact nano composite structure which can block water vapor, oxygen and oil stains; meanwhile, organosilicone acrylic resin molecules of the water-based ink layer react with groups in the waterproof adhesive layer to form hydrogen bonds and covalent bonds for bridging, so that the adhesive has extremely high bonding strength, durability and wear resistance, the water resistance is remarkably improved, the environment-friendly requirement is met, and the performance is excellent.

Biodegradable and / or compostable compositions of starch esters, and manufactured articles formed from blends of biodegradable and / or compostable compositions of starch esters and biodegradable and / or compostable polymer compositions. Such manufactured articles can include, but are not limited to, inks, paints, compost bags, laminated bags, agricultural films, binders for ceramics, landscape stakes or spikes, bottles, yarns, sheets, films, packaging materials, pipes, tubes, lids, cups, rods, laminated films, sacks, bags, cutlery, pharmaceutical capsules, foams, granules and powders.

The resin composition of the present invention comprises 40 to 98 parts by mass of a modified starch (A), 2 to 60 parts by mass of a polyvinyl alcohol (B) having a degree of saponification of 75.0 mol % or more, and optionally a clay (C), wherein the total content of the (A), (B) and (C) is 100 parts by mass, and the peak temperature of tan δ in measurement of dynamic viscoelasticity in a range of 20° C. to 150° C. is 128° C. or lower.

The invention relates to the technical field of water-based coatings, and discloses a food-grade water-based coating with skid resistance, wear resistance and stain resistance and application of the food-grade water-based coating in a water cup, and the food-grade water-based coating comprises a coating composition and oxidized starch for curing, the coating composition comprises a solvent, a hydrophilic response component, an ion response component, a film-forming main body and a cross-linking agent, the oxidized starch is prepared by reacting starch with an oxidizing agent. According to the anti-skid coating, the components of carboxymethyl chitosan and polyaspartic acid sodium salt are cooperated, and a coating preparation process of step-by-step dissolution and stirring at a specific rotating speed is matched, so that environmental adaptability anti-skid is realized. Carboxymethyl chitosan absorbs water in a moist environment to generate conformational rearrangement and expose polar groups, polyaspartic acid sodium salt is affected by ions in an electrolyte environment to cause molecular chain curl, the friction performance of the coating in dry, moist and electrolyte environments can be adjusted according to needs through linkage of carboxymethyl chitosan and polyaspartic acid sodium salt, and meanwhile, the components are uniformly dispersed to guarantee response stability. The inherent contradiction between skid resistance and easy cleaning is solved.

The utility model relates to the technical field of coating films, and discloses an ultraviolet-resistant coating film which comprises a paint layer, a film-shaped base body, a fiber net and a back adhesive layer, the fiber net is embedded in the film-shaped base body and divided into an upper layer and a lower layer, the paint layer is located on the upper layer of the film-shaped base body, and the back adhesive layer is located on the lower layer of the film-shaped base body; the paint layer sequentially comprises a finishing coat, an ultraviolet-resistant layer and a primer layer from top to bottom, and the primer layer is in contact with the upper layer of the film-shaped substrate. According to the utility model, the ultraviolet-resistant layer made of titanate HY-311, glycerol triglycidyl ether and diaminodiphenyl sulfone is arranged between the paint layers, so that the ultraviolet resistance of the whole coating film and the adhesive force between the paint layers are improved, and the service life of the coating film is greatly prolonged. The coating film provided by the utility model further comprises a fiber net which is embedded in the film-shaped base body, so that the overall strength of the coating film is improved, the film-shaped base body is made of a flexible epoxy curing agent, and the flexibility of the coating film is improved while the strength is improved.

The present invention discloses a brittle coating for microwaveable frozen pre-fried foods, and its preparation method and application, belonging to the technical field of fried foods. The raw materials of the brittle coating of the present invention, measured in parts by mass, include: 3 to 6 parts of brittle starch, 1 to 3 parts of hydrophilic colloid, 1 to 3 parts of glycerol, and 100 to 300 parts of water; the brittle starch is obtained by cross-linking and modifying oxidized starch with calcium ions. The brittle coating has a good water-blocking effect and can effectively solve the problem of loss of brittleness of microwaveable frozen pre-fried foods during microwave reheating; when microwaveable frozen pre-fried foods prepared using the brittle coating are microwave reheated, the brittleness is improved by 47.3% compared with ordinary corn starch, and the color quality is also good.

This present disclosure is directed to a sizing agent composition, comprising: (a) modified starch; and (b) nanocellulose. The sizing agent composition according to the present invention has good stability, which can greatly enhance paper strength and improve paper properties, such as improving paper burst index, ring crush index, tensile index, paper printability and the like.

The invention discloses an insect and ant prevention cable and a coating device, and relates to the technical field of cables. The cable is sequentially provided with a conductive wire core, an insulating layer, an inner protection layer, an armor layer and an outer protection layer from the inner layer to the outer layer. The surface of the outer protective layer is coated with the following components: 3-4 parts of silicon dioxide; 1-2 parts of a silane coupling agent; 3-6 parts of snail body fluid secretions; 10 to 23 parts of ethanol; 1-2 parts of denatonium benzoate with the concentration of 0.5%; 1 to 2 parts of hydroxypropyl methyl cellulose; 3 to 5 parts of a bifenthrin diluent; 1-3 parts of crosslinked starch; and 5-7 parts of a nano cellulose composite film. Through manual irrigation or rainstorm weather, water is in contact with the protective film and the second layer of medicine film and is decomposed, components in the protective film belong to degradable substances, so that pollution to soil is avoided, bifenthrin diluent in the second layer of medicine film volatilizes when meeting water, an insect repelling belt is formed around the soil wrapping the cable, and the cable is protected from being damaged. Therefore, the cable is prevented from being bitten by insects and ants.

The present invention relates to a resin composition including 50-98 parts by mass of (A) a modified starch, 2-50 parts by mass of (B) polyvinyl alcohol, and 0.01-0.15 part by mass of (C) a compound represented by formula (1) or a salt thereof, the total content of component (A), component (B), and component (C) being 100 parts by mass, and the average amylose content of the modified starch (A) being at least 50% by mass.

This invention discloses a cultivation method using undisturbed soil from wild morel mushroom cultivation sites, belonging to the field of morel mushroom cultivation technology. The method involves excavating undisturbed soil from wild morel mushroom growing areas, preparing mushroom beds in cultivation areas, transferring the undisturbed soil to the prepared mushroom beds, leveling it, spraying with a composite film-forming liquid, and compacting it. Nutrient bags containing morel mushroom substrate are placed on the prepared undisturbed soil. During cultivation, an arched shed is constructed, controlling the temperature at 16-18℃ and the humidity at 60-75%, and cultivating morels under conditions of 500-700 lumens of light flux. Ventilation is performed every two days. Morels can be harvested when the cap diameter reaches 5-7 cm. This method preserves the microbial community and nutrients in the undisturbed soil, making it suitable for the growth and reproduction of wild morels, thereby improving the cultivation efficiency of wild morels and protecting wild morel resources.

The invention relates to the field of coatings, and discloses a waterproof coating and a preparation method thereof. The graphene-based biomass fuel comprises the following components in parts by weight: 100-120 parts of biomass, 10-15 parts of graphene, 80-100 parts of biological wax, 4-6 parts of nano silicon dioxide, 2-3 parts of a surfactant, 20-30 parts of a silanization reagent, 4-5 parts of a cross-linking agent, 1-2 parts of an initiator, 1-2 parts of a dispersing agent, 2-4 parts of an emulsifier, 250-300 parts of ethanol, 200-300 parts of a 50% acetone aqueous solution and 30-50 parts of deionized water. According to the invention, the modified graphene is grafted on the biomass, so that the waterproofness, hardness, cohesiveness and strength of the composite coating are improved; according to the present invention, the biomass and the biological wax are adopted as the raw materials, water is adopted as the dispersion medium to form the aqueous emulsion with the biological wax, the prepared waterproof coating is the aqueous coating, does not contain the organic solvent, is harmless to the human body and is environmentally friendly, and the main raw materials such as the biomass and the biological wax have advantages of wide source, renewability and no secondary pollution after degradation.

The invention relates to the technical field of cable materials, in particular to a halogen-free low-smoke flame-retardant low-calorific-value cable material for a B1-grade cable and a preparation process. The matrix resin at least comprises an ethylene-octylene copolymer, an ethylene-norbornene copolymer and a polyolefin elastomer; the flame-retardant system at least comprises phytic acid nicotinamide iron, nitrogen and phosphorus modified ECO, magnesium hydroxide and zinc borate; the processing aid at least comprises a silane coupling agent, an antioxidant and a lubricant; by blending the composition of the matrix resin and the flame-retardant system and optimizing the processing flow, the problem of insufficient flowability of the existing material due to the addition of a large amount of inorganic flame retardant is improved, and the extrusion molding effect and the continuous production capacity during production are favorably improved; meanwhile, the adverse effect on the mechanical property of the material is reduced, so that the heat release speed in the combustion process is reduced on the basis of keeping better flexibility and tensile performance of the cable, and the stable performance of the material in a long-time fire environment is improved.

This invention provides a two-component flame retardant, its preparation method, and its application, relating to the technical field of flame retardants. The two-component flame retardant comprises component A and component B; wherein component A comprises starch phosphate ester, calcium chloride, surfactant, propylene glycol, aerogel, and water; wherein component B comprises bone glue and water. This two-component flame retardant is environmentally friendly, non-corrosive, and has no impact on plant growth. It can be used on trees, leaves, paper, walls, and insulation boards, exhibiting excellent performance. It demonstrates good weather resistance when used in rainy seasons in the south, cold regions in the north, and hot summers, without affecting product quality while providing excellent protection.

The present invention relates to an adhesive composition comprising, among others, (i) microfibrillated cellulose and (ii) a metal in oxidation state of II or greater. The present invention further relates to uses of such an adhesive composition and to products prepared with such an adhesive composition. Furthermore, the present invention relates to a process for making corrugated paperboards or cardboards, or solid paperboards or cardboards by using such an adhesive composition.

Film Coating Composition The formed seed coating composition comprises a film-forming composition. [Solution] The thin film coating composition contains a rosin resin and / or a starch derivative and a wax dispersion. The total amount of rosin / starch and wax in the thin film coating composition ranges from 2 to 60% by weight. The seed coating formulation optionally contains agrochemical actives and / or nutrients and is applied to seeds or bulbs for wet and dry flowability, abrasion resistance, dust-off, germination, planting suitability, and color retention. In particular, the seed coating composition provides these properties while being essentially or completely free of microplastics. Methods for making the formulation and for treating seeds or bulbs with the seed coating formulation are also provided.

A packaging film comprising a protein, a plasticizer, and a reducing agent is provided. A coating for a packaging film is also provided. The coating comprises wax particles, ethyl cellulose, and an emulsifier. A membrane is prepared by mixing a protein and water to form a first mixture, obtaining a supernatant from the first mixture, adding a plasticizer and a reducing agent to the supernatant to form a second mixture, and drying the second mixture to form the membrane. A coated film is prepared by a method comprising: melting a wax to form a molten wax; adding an emulsifier and a solvent to the molten wax to form a third mixture; homogenizing the third mixture to form an emulsion; adding ethyl cellulose to the emulsion to form a coating solution; and applying the coating solution to the film to form a coated film.

The invention discloses a packaging material which comprises a base paper and at least one coating on the base paper, wherein the base paper has a basis weight of at least 30 g / m² and at most 90 g / m², wherein the at least one coating is a starch / pectin coating comprising one or more layers each comprising a mixture of starch and pectin with a mass ratio of starch to pectin in the mixture of between 1000:5 and 100:5, wherein the total mass of the mixture of starch and pectin in the aforementioned one or more layers in relation to the surface area over which the starch / pectin coating is actually applied to the base paper is at least 1.5 g / m² and at most 12.0 g / m², and wherein the packaging material has an oxygen permeability in at least one direction through the packaging material - measured in accordance with ASTM D3985-17 at a relative humidity of 0% and a temperature of 23°C - of at least 1 cm³ / (m²×d) and at most 500 cm³ / (m²×d).

The present invention relates to a biodegradable coating composition comprising a crosslinked starch and a filler, and optionally a polyol plasticizer, and to an exterior structure, such as a greenhouse, provided with a coating layer obtained by drying said coating composition. The present invention further relates to the removal of the coating layer using a targeted cleaning composition.

The invention discloses a fireproof coating and a preparation method thereof, and relates to the technical field of coatings. The fireproof coating comprises the following raw materials in parts by weight: 90-110 parts of modified magnesium oxide, 40-50 parts of magnesium chloride, 5-8 parts of magnesium sulfate, 1.5-3 parts of polyvinyl alcohol, 1-2 parts of starch, 0.3-0.8 part of borax, 70-90 parts of deionized water, 3-5 parts of modified melamine, 0.5-1 part of a titanate coupling agent and 2-4 parts of ammonium dihydrogen phosphate. The fireproof coating is scientific in raw material ratio and contains efficient flame-retardant components such as modified magnesium oxide and modified melamine. The modification process improves the synergistic flame retardant efficiency of the inorganic phase, and the titanate coupling agent enhances the compatibility. During preparation, step-by-step feeding, particle size control and grinding are performed to ensure fineness and uniformity. The paste is in a specific wiredrawing state, is free of caking and has good flame retardance and coating performance, raw materials are easy to obtain, and the process is controllable.

To provide base paper for release paper, release paper and a pressure-sensitive adhesive sheet which can be used in many kinds of printing systems such as an LBP system and an inkjet system and suppress the occurrence of curling due to the printing of the pressure-sensitive adhesive sheet.SOLUTION: The present invention provides a raw paper 1 for release paper comprising a paper substrate 10 (A) and a coating agent layer 12 (B) in this order, wherein the coating agent layer 12 (B) contains at least one ingredient (b) selected from the group consisting of dextrins, polyamine resins, and starches, and the raw paper 1 for release paper has an air permeability of 180 seconds or less as determined in accordance with the JISP8117.SELECTED DRAWING: Figure 1