168results about "Starch coatings" patented technology

The invention discloses a metal temporary protective film and a preparation method and application thereof, and the metal temporary protective film comprises the following components by weight: 20-90 parts of hydrophilic acrylate resin; 5 to 50 parts of a hydrophilic UV monomer; 0-50 parts of a filler; 0-10 parts of a thixotropic agent; 1 to 10 parts of a photoinitiator; 0.01-1 part of a dispersant; 0.01 to 1 part of a defoaming agent; 0-20 parts of an adhesion promoter; 0.01 to 5 parts of a polymerization inhibitor; and 0-20 parts of starch. The metal temporary protective film has the characteristics of high binding force and easy film stripping after being cured, so that the metal temporary protective film has the effects of inhibiting wiredrawing and protecting the surface during metal machining, can be soaked in tap water for stripping, and can realize rapid film stripping without being soaked in alkaline water, acid water and an organic solvent.

The invention belongs to the technical field of straw resource utilization and agricultural degradable mulching films, and particularly discloses a water absorption and retention type straw-based biodegradable spraying mulching film and a preparation method thereof.Straw short fibers and biodegradable super absorbent resin are mixed through a V-shaped mixing machine according to a certain proportion, and a homogeneous dry powder formula is prepared; the preparation method comprises the following steps: preparing an adhesive aqueous solution with a certain concentration as a liquid-phase formula, synchronously spraying the dry powder formula and the liquid-phase formula according to a certain ratio by adopting a dry powder sprayer and a water mist spraying can respectively to prepare the continuous and stable mulching film, and preparing the mulching film through simple processes such as crushing, mixing and spraying without complicated equipment. The production cost is obviously lower than that of an existing synthetic polyester / natural polysaccharide mulching film, meanwhile, the problem of environmental pollution caused by straw incineration is solved, the agricultural sustainable development requirement is met, large-scale production is facilitated, the utilization rate of agricultural water resources is increased, and the mulching film has great application potential in arid / semi-arid regions.

The invention discloses a coating material containing an agilawood component and a preparation method and application thereof, and belongs to the technical field of coating materials, a coating is composed of agilawood powder, paprika powder, natural glutinous rice glue, agilawood hydrolat and water, diatomite or beeswax emulsion can be selectively added, the oil content of the agilawood powder is larger than or equal to 15%, linalool is larger than or equal to 1.2 mg / g, and the agilawood powder is subjected to airflow crushing treatment; the glutinous rice glue is prepared by hydrolyzing starch, and the solid content is 25-35%; agilawood hydrolat is extracted through steam distillation, the concentration of agilawood alcohol is larger than or equal to 0.8 mg / mL, during preparation, raw materials are mixed and then stirred for 10-20 min at the high speed of 2500-3500 r / min at the temperature of 20-40 DEG C to form a stable system, the VOC content of the coating is smaller than 10 g / L, the coating meets the GB18582-2020 standard, the escherichia coli inhibition rate and the staphylococcus aureus inhibition rate are 95% and 98% respectively, the initial aroma intensity is 8.5 min (10 min), the coating is kept for 7.2 min after 12 months, the adhesive force is 0 grade, the pencil hardness is 2-4 H, and the coating is suitable for being applied to the field of medical care. The coating has the advantages of no less than 5000 times of washing resistance, no less than 91% of performance retention rate after 500 hours of ultraviolet aging, and suitableness for coating wall surfaces, furniture and handicrafts, and has the characteristics of aromatic physical therapy, antibiosis and environmental protection.

A method of coating a polymer surface is provided, comprising providing a polymer having a surface, optionally treating at least a portion of the polymer surface with an oxidizing agent, treating at least a portion of the polymer surface with a composition comprising a polysaccharide, an oligosaccharide, a polyol, or a mixture thereof, and incubating the treated polymer with the composition for a period of time. Also disclosed are polymers comprising such coatings, containers comprising such coated polymers, and medical devices comprising such polymers.

The invention discloses a coating for a chemical plating process and a preparation method of the coating, and belongs to the field of three-dimensional precision machining. The coating is arranged on the surface of a base material, and based on the mass percentage of the coating, the coating comprises 55%-85% of a cross-linked product of an epoxy resin AB agent, 1%-5% of nano metal particles and 10%-40% of water-soluble polymers. The coating is adopted for a chemical plating process, the process steps are few, and the binding force between a metal circuit and a base material in the prepared three-dimensional interconnection molding device is excellent.

The invention provides a high-binding-force easily-degradable bacteriostatic fresh-keeping emulsion coating and a preparation method thereof, and belongs to the technical field of coatings, the high-binding-force easily-degradable bacteriostatic fresh-keeping emulsion coating comprises the following technical indexes: the solid content is 35.1 + / -1.0%; the viscosity is less than 200mPas; the pH (Potential of Hydrogen) is 8.5 to 10.5; the density is 1.00 to 1.10 g / ml; the high-binding-force easily-degradable bacteriostatic fresh-keeping emulsion coating is prepared from an easily-degradable polymer, a bacteriostatic agent, a thickening agent, a pH regulator and water, wherein the mass of the easily-degradable polymer accounts for 20%-30% of the total mass of the coating, the mass of the bacteriostatic agent accounts for 0.5%-2% of the total mass of the coating, the mass of the thickening agent accounts for 0.2%-1% of the total mass of the coating, the mass of the pH regulator accounts for 0.1%-0.5% of the total mass of the coating, and the balance is water. Through the technical combination of the easily degradable polymer, the composite bacteriostatic agent and the environment-friendly process, a novel coating system is constructed, the core pain point of a traditional food packaging coating is solved, the packaging material is promoted to be upgraded to the environment-friendly, high-efficiency and safe direction, and remarkable economic value and social benefit are achieved.

The invention belongs to the technical field of oil-proof coatings, and discloses a starch-based oil-proof coating as well as a preparation method and application thereof. The method comprises the following steps: 1) reacting cassava starch with sodium periodate under the condition that the pH is 2-4, centrifugally washing to be neutral, and drying to obtain dialdehyde starch; 2) dispersing dialdehyde starch in water, and then performing gelatinization treatment to obtain a dialdehyde starch solution; dissolving chitosan in an acetic acid solution to obtain a chitosan solution; and 3) mixing the chitosan solution with the dialdehyde starch solution, adjusting the pH value to be acidic, and reacting to obtain the starch-based oil-proof coating. The method is simple, green and environment-friendly; the prepared coating is safe and biodegradable, has excellent oil-proof performance, and improves the tensile strength and tear strength of the paper.

The invention relates to the technical field of cat litter production, in particular to a tea residue cat litter and a preparation method thereof.The tea residue cat litter comprises a functional layer, a protective layer and a water-soluble film layer; the functional layer is prepared from the following raw materials: tea residue powder, an antibacterial agent, powder essence, a binder, composite powder and deionized water; the raw material of the protective layer consists of composite powder; the water-soluble film layer is formed by drying water-soluble slurry; the composite powder comprises modified zeolite, bentonite and sodium bicarbonate. The tea residue cat litter provided by the invention is endowed with antibacterial, deodorizing and aroma-emitting effects on the functional layer; the protective layer is endowed with the function of a protective functional layer, so that the problems of allergy and the like caused by direct contact between an antibacterial agent and the skin of the cat are avoided; the water-soluble film layer is endowed with a sealing effect, so that on one hand, dust drifting in a room can be reduced, and on the other hand, the smell emitted by the essence can be greatly reduced, and cats and consumers can accept the essence easily; through compounding of a multi-layer structure, the overall quality of the tea residue cat litter is improved.

According to an example aspect of the present invention, there is provided an intumescent fire retardant composition comprising: an acid source comprising or consisting of ammonium phytate; and a carbon source selected from the group consisting of: carbohydrates, chemically modified lignins, tannin, and any combinations and derivatives thereof.

The present disclosure relates to a biodegradable thermal adhesive coating composition and a method of preparation thereof, and more specifically, it relates to a biodegradable thermal adhesive coating composition, which is biodegradable in order to be environment-friendly, excellent in its adhesion to substrates of various materials, such as paper, plastic, etc., water-resistant, stable in the viscosity change, and suitable for a production process using thermal adhesion, and a method of preparation thereof.

The invention discloses a konjak ceramic wine bottle opening sealing film and a preparation method thereof, and belongs to the technical field of food contact materials. The invention provides a preparation method of a composite film with antibacterial performance, which comprises the following steps: dissolving gallic acid in water to obtain a film forming system, adding konjac glucomannan, corn starch and Tara gum into the system, stirring, adding glycerol, stirring to obtain a film coating solution, degassing the prepared film coating solution while the film coating solution is hot, and drying to obtain the composite film with antibacterial performance. Immediately and uniformly smearing the membrane liquid on the ceramic bottle opening; the method disclosed by the invention is particularly suitable for an environment-friendly sealing technology of a high-end ceramic wine container, and can be used for replacing a traditional plastic heat shrinkage film and paraffin sealing process.

Methods of forming biodegradable polymeric films, biodegradable polymeric films produced through the methods, and composite articles comprising the biodegradable polymeric films are provided herein. In an embodiment, the methods include the steps of mixing a heterogeneous additive and a plasticizer to form a slurry, mixing the slurry and a biodegradable polymer to form a dough, and gel extruding the dough to form an extrudate. In an embodiment, a biodegradable polymeric film is formed by a method comprising the recited steps. In an embodiment, a composite article comprises the biodegradable polymeric film and an additional layer having a composition different from that of the biodegradable polymeric film.

The present invention relates to a paper watchband and its manufacturing process. The paper watchband includes a band body, a fixed band loop, and a movable band loop. The band body includes a fabric, a core material, and a base material. The fabric includes paper material and a waterproof layer. The waterproof layer is a waterproof adhesive coated on the surface of the paper material. The band body is divided into a first band body and a second band body. The fixed band loop is fixed to the first band body, and the movable band loop is movably sleeved on the first band body. A portion of the fixed band loop is glued and fixed between the core material and the base material of the first band body, and the remaining portion of the fixed band loop is exposed outside the first band body. The paper material is recycled newspaper, and the printed fonts and patterns on the newspaper constitute a decorative layer. The waterproof layer is a transparent waterproof layer through which the paper material decorative layer can be observed. The fabric of the paper watchband of the present invention is made of paper, and the printed fonts and patterns on the recycled newspaper constitute the decorative layer of the watchband, making the watchband production more environmentally friendly and the appearance of the watchband more personalized. The core material and base material are made of leather, which provides the watchband with sufficient toughness and is not easy to break.

The invention discloses an antibacterial and hydrophilic dual-functional ionic liquid double-layer membrane as well as a preparation method and application thereof. According to the double-layer film, corn starch (ST) and polyvinyl alcohol (PVA) serve as substrates, and natural dye alizarin (AL) is mixed to serve as a hydrophilic layer; chitosan (CS), corn protein (Zein) and vanillin (VA) serve as a supporting layer; meanwhile, the ionic liquid is doped, so that the double-layer film is endowed with a fresh-keeping function and sensitive detection capability, the limitation of a single detection function is broken through, and a new thought is provided for food safety.

The invention belongs to the field of cigarettes, and particularly relates to a preparation method of moisture-proof coating slurry for heating a cigarette sheet, and the moisture-proof coating slurry is obtained by performing heat treatment on a water-containing mixed solution containing a formula 1, a formula 2 and starch at the temperature of 50-150 DEG C. The invention also comprises the moisture-proof slurry prepared by the preparation method and application of the moisture-proof slurry in tobacco sheets. Researches show that a one-pot system of a formula 1, a formula 2 and starch is innovatively subjected to heat treatment, the structure and network of the material can be optimized on the basis of physicochemical characteristics among the components, so that the material can be endowed with excellent moisture resistance, and the moisture absorption problem caused by high moisture absorption of the tobacco sheet can be solved when the material is applied to moisture-proof treatment of the tobacco sheet; and the problems of suction miscellaneous gas, degradation of suction flavor and the like can be avoided.

A starch slurry includes a starch in an amount of between approximately 25 to 98 weight percent, a plasticizer in an amount of between approximately 3 to 30 weight percent, and water in an amount of between approximately 5 to 60 weight percent. The starch slurry can have a bulk density of between approximately 10 to 100 pounds per cubic foot. The starch slurry can be used for generating insulation products or printing a starch foam.

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.

To provide a laminate which is excellent in oil resistance, water resistance, heat sealability and blocking property without using a fluorine compound even when a biomass-derived material having biodegradability is used, a coating liquid for forming a laminate, a food packaging sheet having the laminate, and a method for manufacturing a laminate.SOLUTION: A laminate has a first coating layer (A) containing modified starch on at least one paper base material, and a second coating layer (B) composed of a non-water soluble resin on the first coating layer, wherein the total of coating amounts of the first coating layer (A) and the second coating layer (B) is 0.5-10 g / m2, and air shielding property is 20 kPa or less.SELECTED DRAWING: Figure 1

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.

Various embodiments of the present invention provide sizing compositions, fiber glass strands, cement boards, and other products incorporating fiber glass. In some embodiments, a sizing composition of the present invention comprises a starch, a nonionic lubricant, a silane comprising at least one amine and at least one aryl or arylene group, and an aminofunctional oligomeric siloxane.

The present invention relates to an environmentally harmonious oil-resistant agent capable of imparting sufficient oil resistance using a natural material as a biomass material. In the oil-resistant agent, hydrogen atoms of hydroxyl groups in a natural product containing at least one hydroxyl group are substituted by R groups. In the formula, the R group is a group represented by-Y-Z (in the formula, Y is a direct bond,-C (= O)-,-C (= O)-NR '-or-C (= S)-NR'-(where R 'is a hydrogen atom or an alkyl group having C1-C4 carbon atoms, and Z is an optionally substituted hydrocarbon group having 1-40 carbon atoms, or a polysiloxane). The natural product is preferably cellulose, dextrin, glycerol or polyglycerol.

The present invention relates to the field of packaging materials, and particularly to a composite material for food packaging that can be sustainably utilized and its preparation process. The process includes the following steps: preparation of a high-barrier coating for oxygen and moisture; preparation of a high-strength film material solution; surface treatment and film layer coating of a PET substrate. Through the synergistic effect of rice bran wax and cinnamaldehyde, the hydrophilicity of polyvinyl alcohol is inhibited and a dense film structure is formed, enhancing the mechanical strength of the film layer and its barrier properties against moisture and oxygen. Moreover, cinnamyl alcohol can also provide good antioxidant and antibacterial properties for the film layer, and ZnO can be embedded in the coating structure to fill micropores and defects, improving the denseness and mechanical strength of the film layer. In summary, the barrier ability of the composite material for food packaging that can be sustainably utilized against oxygen and moisture is significantly improved, and it has good antibacterial and antioxidant properties.

This application discloses a coating for electroless plating and its preparation method, belonging to the field of three-dimensional precision machining. The coating is applied to the surface of a substrate and, based on its mass percentage, comprises: 55%–85% crosslinking product of epoxy resin AB agent, 1%–5% nano-metal particles, and 10%–40% water-soluble polymer. Using the coating of this application for electroless plating involves fewer process steps and results in excellent adhesion between the metal circuitry and the substrate in the prepared three-dimensional interconnected molded device.

The invention relates to the technical field of pressure-sensitive membranes, and particularly discloses a pressure test color development membrane and a preparation method thereof. The pressure test color development film comprises a base material, a capsule layer and a color development layer, wherein the capsule layer and the color development layer are formed on the base material; the capsule layer is connected with the color developing layer; the capsule layer comprises a first microcapsule containing an electron donating leuco dye precursor and a second microcapsule containing an electron accepting compound. When the color development film is pressed in a pressure test, the microcapsules are broken to different degrees and release the color former and the color developing agent respectively, and after the color former and the color developing agent are in contact reaction, the structure is changed and is absorbed by the color development layer to show color. The color former and the color developing agent respectively form the capsule layer in the form of microcapsules, so that the adaptability of the pressure test color development film to the storage environment is improved, the color development concentration of the pressure test color development film cannot be reduced along with the prolonging of the storage time especially in the high-temperature and high-humidity environment, the repeatability of the test result is better, and the color development performance is stable.

A cellulosic particle contains: cellulose as its base constituent; and at least one selected from the group consisting of a hydrocarbon ester and a ketone, and the amount of the hydrocarbon ester or ketone in the cellulosic particle is 3 ppm or more and 1000 ppm or less.

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.

An adhesive, and / or a biopolymer that contains Cinnamon and / or cinnamic acid, Tee Tree Oil. Rosemary or other natural essential oil or essence. In at least one embodiment the wt % of Cinnamon is 0.4%. In at least one embodiment the wt % of cinnamic acid is at least 5%. In at least one embodiment the wt % of cinnamic acid is 7%. In at least one embodiment the wt % of cinnamic acid is at least 10%. In addition, there is a process for applying a natural biocide. The adhesive can be combined with paper products, corrugated cardboard or building materials such as wood panels.

The present invention relates to a film comprising at least one biodegradable layer (i) having an elastic modulus of more than 450 MPa, consisting of a mixture of polyhydroxyalkanoate constituting the continuous phase and aliphatic and / or aliphatic-aromatic polyester constituting the discontinuous phase, and at least one coating layer (ii) preferably capable of having barrier effects against gases and liquids. The surface of said layer (i) will have a root mean square roughness Sq of more than 10 nm and less than 45 nm, measured by atomic force microscopy (AFM). The film is particularly suitable for use in food packaging.

The present invention relates to an aqueous coating composition and a coating and an article formed therefrom. In particular, the aqueous coating composition comprises: a component A comprising a film-forming resin composition, starch, optionally an aqueous vehicle and additional additives, wherein the starch is present in an amount of 2-20 wt.%, preferably in an amount of 4-10 wt.%, relative to the total weight of the component A, and wherein the coating formed from the aqueous coating composition has a 60° gloss of not more than 5°. The present invention also relates to a coating and an article formed from the above-mentioned aqueous coating composition, wherein the coating and the article have a haptics effect.