32results about "Starch dervative coatings" patented technology

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 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.

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 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.

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.

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 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.

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 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

A coating material includes silane salt-modified polysaccharide salt, cationic starch, and water. The silane salt can be Si(OH)x(OK)y(R)4-x-y; R is a C1-10 alkyl group; x=1 to 2, y=1 to 2, and x+y=2 to 3. The polysaccharide salt is a salt of cellulose derivative, natural gum, alginic acid, starch, chitosan, or a combination thereof. The coating material can be used to manufacture an oil-proof paper.

Aspects of the present disclosure include a biobased coating composition comprising at least one modified starch, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one crosslinker is a citric acid crosslinker present in an amount ranging from 1 to 10 percent by weight of the biobased coating composition. Further aspects of the present disclosure include paper plate comprising a biobased coating composition comprising at least one modified starch, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one crosslinker is a citric acid crosslinker present in an amount ranging from 1 to 10 percent by dry weight of the biobased coating composition. Additional aspects of the present disclosure include a biobased coating composition comprising at least one modified starch, at least one petroleum-based polymer, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one petroleum-based polymer is present in an amount ranging from 1 to 50 percent by weight of the biobased coating composition.

Aqueous coating compositions for providing a grease resistant coating on fiber-based substrates are provided that comprise an n-OSA modified starch having an Mw of from about 500,000 to about 1,300,000 and a degree of substitution of from 0.002 to about 0.009, the n-OSA modified starch being present as from about 5 wt% to about 40 wt% of the total aqueous coating composition. The aqueous coating composition has a Brookfield viscosity at 30°C at 100rpm of from about 50 to about 2500 mPas; and the n-OSA modified starch is at least about 92% of any starch present in the aqueous coating composition. Methods of preparing the coating composition, fiber-based products comprising a coating of the coating composition, and methods of preparing these coated fiber-based product are also described.

The invention discloses a preparation method of a degradable super-hydrophobic polysaccharide polymer packaging film with low-temperature toughness and antibacterial and anti-icing functions. The packaging film provided by the invention comprises a polysaccharide cationic derivative and nanoparticles, the polysaccharide cation derivative is selected from polysaccharide derivatives containing morpholine salt cations and / or piperazine salt cations. The packaging film disclosed by the invention has excellent super-hydrophobic, antibacterial and anti-icing properties. The packaging film has good mechanical strength and environmental protection performance, can be widely applied to the fields of cold-chain transportation, food preservation, medicine packaging and the like, and provides an innovative solution for functional packaging materials.

A packaging material comprising 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 / m and at most 90 g / m wherein the at least one coating is a starch / pectin coating comprising one or more layers, the one or more layers each comprise a mixture of starch and pectin, the mass ratio of starch to pectin in the mixture being 1000: 5 to 100: 5, and wherein the total mass of the mixture of starch and pectin in the previous one or more layers is at least 1.5 g / m and at most 12.0 g / m relative to the surface area of the starch / pectin coating actually applied to the base paper, and wherein the packaging material has an oxygen permeability through the packaging material in at least one direction of at least 1 cm / (m.d) and at most 500 cm / (m.d), measured according to ASTM D3985-17 at a relative humidity of 0% and a temperature of 23 DEG C.

Aspects of the present disclosure include a biobased coating composition comprising at least one modified starch, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one crosslinker is a citric acid crosslinker present in an amount ranging from 1 to 10 percent by weight of the biobased coating composition. Further aspects of the present disclosure include paper plate comprising a biobased coating composition comprising at least one modified starch, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one crosslinker is a citric acid crosslinker present in an amount ranging from 1 to 10 percent by dry weight of the biobased coating composition. Additional aspects of the present disclosure include a biobased coating composition comprising at least one modified starch, at least one petroleum-based polymer, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one petroleum-based polymer is present in an amount ranging from 1 to 50 percent by weight of the biobased coating composition.

The invention relates to a method for producing a starch product, having the steps of: (a) providing a starch and (b) coextruding the starch, which comprises (i) an acid and / or a salt of an acid and (ii) a glyoxal-containing crosslinker, in order to obtain a starch product. The invention is characterized in that the acid or the salt of the acid has a pKs value of 2.7 or less, and the quantity of the glyoxal-containing crosslinker ranges from 0.1 to 5.0 wt.%, based on the weight of the starch. The invention additionally relates to a starch product which can be obtained using the method according to the invention, wherein the starch product has a glyoxal-containing crosslinker quantity ranging from 0.1 to 5.0 wt.%, based on the total weight of the starch product, to a coating color which has the starch product in a quantity of 0.5 to 14.0 wt.%, based on the total weight of the coating color, and to an adhesive formulation which has a starch product in a quantity of 5.0 to 65.0 wt.%, based on the total weight of the adhesive formulation.

The present invention relates to a packaging material comprising a paper substrate and a coating, the paper substrate having a Bendtsen permeability of less than 20.0 ml / min and the coating comprising C6-C18 alkenyl succinic anhydride modified starch, platy pigment having an average aspect ratio of 100-3000 and optionally plasticizer. The invention further relates to the use of the packaging material for food packaging and to a method of manufacturing the packaging material.

The application discloses a high-adhesion-resistance regenerated cellulose film and a preparation method thereof, and belongs to the technical field of regenerated cellulose film production, and comprises the following steps: viscose preparation, film regeneration, washing, desulfurization, bleaching, and obtaining a wet film after washing; the wet film is subjected to softening and anti-adhesion coating treatment; and the regenerated cellulose film is prepared through drying and humidity adjustment; the anti-adhesion agent used in the anti-adhesion coating treatment comprises a composition of one or more of modified starch suspension, cellulose micro-powder suspension and wax emulsion; the modified starch suspension is selected from any one of oxidized starch, hydroxypropyl starch, hydroxypropyl oxidized starch, acetylated starch and cationic starch; and the wax emulsion is selected from any one of palm wax emulsion, paraffin wax emulsion, PE wax emulsion, PP wax emulsion, Fischer-Tropsch wax emulsion and composite wax emulsion. In the application, the anti-adhesion agent is combined with the surface of the wet film, the adhesion effect is improved, and the generation of powder dropping is effectively avoided.

Aspects of the present disclosure include a biobased coating composition comprising at least one modified starch, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one crosslinker is a citric acid crosslinker present in an amount ranging from 1 to 10 percent by weight of the biobased coating composition. Further aspects of the present disclosure include paper plate comprising a biobased coating composition comprising at least one modified starch, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one crosslinker is a citric acid crosslinker present in an amount ranging from 1 to 10 percent by dry weight of the biobased coating composition. Additional aspects of the present disclosure include a biobased coating composition comprising at least one modified starch, at least one petroleum-based polymer, at least one crosslinker, at least one plasticizer and at least one pH adjuster, wherein the at least one petroleum-based polymer is present in an amount ranging from 1 to 50 percent by weight of the biobased coating composition.

A packaging film containing a protein, a plasticizer, and a reducing agent is provided. Also provided is a coating layer for use with the packaging film, the coating layer containing wax particles, ethylcellulose, and an emulsifier. The film is prepared by a method comprising the steps of: mixing the protein with water to form a first mixture; obtaining the supernatant from the first mixture; adding the plasticizer and reducing agent to the supernatant to form a second mixture; and drying the second mixture to form the film. The coated film is prepared by a method comprising the steps of: melting the wax to form molten wax; adding the emulsifier and solvent to the molten wax to form a third mixture; homogenizing the third mixture to form an emulsion; adding ethylcellulose to the emulsion to form a coating solution; and applying the coating solution to a film to form the coated film.

The invention discloses modified starch styrene-butadiene latex and a preparation method thereof, and belongs to the technical field of preparation of modified starch styrene-butadiene latex. Comprising the following components in parts by weight: 15 to 25 parts of carboxymethylated hydroxypropyl modified starch, 50 to 70 parts of styrene-butadiene latex, 0.8 to 2 parts of nano zinc oxide, 3 to 5 parts of polyethylene glycol 400, 2 to 4 parts of an emulsifier, 50 to 70 parts of deionized water, 0.3 to 0.8 part of a defoaming agent, 0.15 to 0.3 part of a preservative and 0.1 to 0.5 part of a pH regulator. The carboxymethylated hydroxypropyl modified starch, the nano-zinc oxide and the polyethylene glycol 400 are synergic through intermolecular acting force, stable dispersion synergic and rheological film synergic, so that the comprehensive improvement of the leveling property, the stability and the mechanical property of the coating is realized.

A packaging film including protein, a plasticizer, and reducing agent is provided. A coating for use with packaging films is also provided. The coating includes wax particles, ethyl cellulose, and an emulsifier. The film is prepared by a method comprising mixing protein with water to form a first mixture, obtaining a supernatant from the first mixture, adding a plasticizer and reducing agent to the supernatant to form a second mixture, and drying the second mixture to form the film. The coated film is prepared by a method comprising melting wax to form melted wax, adding an emulsifier and a solvent to the melted 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 a film to form the coated film.

The invention relates to a POE elastomer interior trim skin and a preparation method thereof.The POE elastomer interior trim skin comprises an elastomer skin body, a bottom layer and a waterproof coating, the bottom layer is formed by attaching chlorinated polyolefin to the surface of the elastomer skin body, and the waterproof coating is formed by coating the surface of the bottom layer with waterproof paint; the hydrophobic coating is prepared from the following components in percentage by mass: 5 to 10 weight percent of nano silicon dioxide, 5 to 10 weight percent of organic silicon wear-resistant additive, 0 to 5 weight percent of perfluoroalkyl compound, 5 to 15 weight percent of carbodiimide cross-linking agent, 6 to 8 weight percent of modified composite starch and the balance of silicone resin, the modified composite starch comprises composite starch and esterified starch, and the raw materials of the composite starch comprise starch, sodium chlorate, sodium hydroxide and dodecenyl succinic anhydride. The water resistance of the POE elastomer interior trim skin can be remarkably improved, meanwhile, component analysis is inhibited, and the anti-aging stability is enhanced.

The application discloses a chiral phosphorescent material, which comprises an organic matter A and an ionic polysaccharide derivative with the structure shown in the following formula I. The chiral phosphorescent material is prepared by the ionic polysaccharide derivative and the organic matter A for the first time. The ionic polysaccharide derivative provides a chiral environment, transmits chirality and limits the movement of light particles. The change of the chemical structure and the aggregation state of the organic matter A can control the phosphorescent emission of the chiral phosphorescent material. The chiral phosphorescent material is a full-color chiral phosphorescent polymer material. The chiral phosphorescent material covers a wide color gamut from blue to yellow, green, orange and red. The excellent water solubility and processing formability can prepare a complex and diverse circularly polarized phosphorescent pattern as a coating, and show great application prospects. The universal chiral transmission strategy provides a new way for expanding the chiral phosphorescent material.