152 results about "N-propyl acetate" patented technology

The invention relates to the technical field of lithium ion electrolytes, and in particular relates to a lithium-ion battery electrolyte with both high and low temperature performances. The electrolyte comprises lithium hexafluorophosphate, mixed organic solvents, filming additives, additives for improving the dielectric constant and the low temperature infiltration capability, and a lithium salt type additive, wherein the mixed organic solvents comprise a carbonic ester solvent and a linear carboxylic ester solvent; the linear carboxylic ester solvent in the mixed organic solvents is one or a mixture of more than two of ethyl propionate, propionic acid n-propyl ester, n-propyl acetate, acetic acid n-butyl ester and isobutyl acetate; and the additives for improving the dielectric constant and the low temperature infiltration capability are one or a mixture of more than two of fluoro ethylene carbonate, difluoro ethylene carbonate and 4-trifluoromethyl ethylene carbonate. A battery prepared from the lithium-ion battery electrolyte with both high and low temperature performances is long in service life, and both the good low temperature discharge performance of the battery is ensured, and the storage performance of the battery at the high temperature of 60 DEG C is effectively considered.

The invention belongs to the technical field of tobacco packing box, and in particular relates to a method for detecting contents of 21 volatile organic compounds (VOC), including benzene, methyl benzene, p-xylene, m-xylene, o-xylene, styrene, methanol, ethanol, acetone, isopropyl alcohol, methyl acetate, normal propyl alcohol, ethyl acetate, butanone, acetic acid isopropyl ester, n-butyl alcohol, propylene glycol monomethyl ether, n-propyl acetate, propylene glycol monoethyl ether, 4-methyl-2-pentanone, butyl acetate, cyclohexanone in a tobacco packing box. The method for detecting 21 volatile organic compounds in the tobacco packing box disclosed by the invention comprises the following steps of: sample pretreatment: preparing a piece of hard box packing paper; cutting and reserving a main packing surface by an area of 22.0cm*5.5cm; rolling the printing surface of the sample inwards to obtain a barrel-shaped part; putting the barrel-shaped part in a headspace bottle; adding 1000mu l of glycerol triacetate; sealing, and implementing a headspace-gas chromatography detection. The method disclosed by the invention is high in sensitivity, high in recovery rate, and excellent in precision of detecting result.

The invention relates to a transfer printing ink with a release function. The transfer printing ink comprises, by weight, 16 to 25% of a polymethacrylate resin, 1.5 to 2.5% of a cellulose acetate resin, 7 to 30% of a pigment, 50 to 62.5% of a mixed solvent, 0 to 2% of an auxiliary agent, 0 to 1% of matt powder and 0 to 2% of wax powder, wherein the mixed solvent is a mixture of two or more selected from the group consisting of ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, toluene, butanone, methyl isobutyl ketone, isopropanol, propylene glycol monomethyl ether and propylene glycol monomethyl ether acetate mixed at any ratio, the auxiliary agent is one or a mixture of more selected from the group consisting of a dispersant, an antistatic agent and an organosilicon leveling agent, the matt powder is gas phase silica, and the wax powder is polymer micro wax powder. The transfer printing ink provided by the invention has all the properties of a traditional transfer printing ink, e.g., pigment concentration, brilliance and good printability and heat resistance, further has excellent release performance and can be used as a release agent in a transfer printing process.

The invention relates to a modeling method for a heterogeneous azeotropic rectification solvent dehydrating tower of an industrial purified terephthalic acid (PTA) device. In the method, the vapor-liquid balance experimental data of an acetic acid, n-propyl acetate, water, p-xylene and methyl acetate quinary mixture system are associated and fitted with the binary interaction parameters of the quinary mixture system according to a thermodynamic property model; and according to the process data of the solvent dehydrating tower under the actual device design condition, a heterogeneous azeotropic rectification solvent dehydrating tower model of the industrial PTA device under the design condition is established, the accuracies of the thermodynamic model and parameters thereof of the quinary mixture system in a laboratory and a rectification tower mathematical steady model are verified, key parameters representing the separating property of the solvent dehydrating tower under the actual condition are acquired, the model is corrected and a process mechanism steady model capable of accurately describing the operating characteristics of the solvent dehydrating tower under the actual condition is established.

The invention provides silver ink with a good metal printing effect and a printing process using the silver ink. The printing process comprises the steps that first, a coated surface of a white cardboard with a single side coated is coated with water-soluble varnish or UV (ultraviolet) varnish, images and texts are printed with well mixed gravure silver ink in a gravure manner, and finally, a layer of water-soluble varnish or UV varnish is printed on an image and text area with the gravure silver ink. The gravure silver ink is formed by blending the following materials in percentage by weight: 60-68% of silver powder, 24-30% of n-propyl acetate, 1-3% of methyl methacylate, 1-3% of butyl acrylate, 1-2% of methacrylic acid, 1-2% of N-hydroxymethyl acrylamide, 0.5-1% of allyl methacrylate, 0.5-1% of isooctyl thioglycolate, 0.2-0.5% of alkylphenol ethoxylates sodium sulfate, 1-2% of water-resistant agents and 0.1-0.5% of drying agents. By means of the silver ink and the printing process, a metal ink layer has a refraction effect, the metal effect is more obvious and an optimal metal effect is achieved.

The invention discloses alcohol-soluble environment-friendly high-speed surface printing ink. The alcohol-soluble environment-friendly high-speed surface printing ink is prepared from the following ingredients in parts by mass: 8-12 parts of polyamide resin, 0-5 parts of nitro-cotton resin, 10-30 parts of pigment, 5-20 parts of ethyl acetate, 5-20 parts of n-propyl acetate, 15-25 parts of isopropanol, 15-30 parts of ethanol, 0.5 part of adhesion promoter, 1 part of polyethylene wax powder and 0.5 part of anti-sticking agent. The ink disclosed by the invention is prepared through the steps of weighing materials, preparing a nitro-cotton resin solution, pre-dispersing, grinding to disperse, adjusting viscosity, carrying out chromatography, filtering and packaging. The ink is higher in fineness, is more uniform, can adapt to the print speed of 300m/min, and is excellent in freezing resistance and anti-adhesion property and good in print effect.

A process for coating on the surface of metal material and then preparing pattern on it includes such steps as immersing metal material in solution of H2SO4, water flushing, drying, coating acetone, benzene and n-propyl acetate, blowing surface by air compressor, baking, electrostatic spraying of polyester epoxy powder, baking, making pattern with the mixture of epoxy resin powder, butyl acetate and pigment by rolling or manually, baking and spraying BJS varnish. Its advantages are low cost, high resistance to chemical corrosion and oxidation, and clear 3D pattern.

A covert material for printing onto a printing medium is provided, the covert material comprising a covert pigment and a binder encapsulating the covert pigment into a particle, where the binder comprises at least one of cellulose acetate butyrate (CAB), butyral vinyl acetate, acetyl butyrate, and acetate butyrate. Alternatively, the binder comprises at least one of polyester, polyolefin, acetyl butyrate, acetate butyrate, polystyrene copolymer, and polystyrene-polyvinylpyridine. The covert material can comprise additional components, such as ethyl acetate and/or n-propyl acetate. In one embodiment, the covert pigment comprises about 0.5-5% of the covert material. In one embodiment, the binder comprises about 5-30% of the covert material. In one advantageous embodiment, the covert pigment comprises at least 2% of the covert material and the binder comprises about 20-25% of the covert material. The covert material can further comprise at least one of a colorant, a surface additive, and a magnetic particle. The covert material can be part of a toner or ink. In at least some embodiments, the particle can have many different sizes, including sizes greater than 1 micron, greater than 5 microns, and greater than 20 microns. In one embodiment, the covert printing material is constructed and arranged to be printed using a printer having a predetermined resolution, wherein the particle has a size that is substantially the same as the size of a single pixel or dot printed using the predetermined resolution. The covert material can be constructed and arranged to satisfy a predetermined number of the NCITS 322 tests.

The invention discloses biaxially-oriented polypropylene (BOPP) pearlised film environment-friendly ink, and relates to ink. The BOPP pearlised film environment-friendly ink is prepared by the following raw materials by weight percent: 15-35% of combined resin, 8-11% of organic color pigment, 2-5% of auxiliary agent and 55-65% of combined solvent, wherein the combined resin comprises alcohol soluble polyamide resin liquid, alcohol soluble aldehyde ketone resin liquid, alcohol ester soluble nitrocellulose resin liquid and maleic acid resin liquid; the auxiliary agent comprises polyethylene wax, an anti-settling agent, Texanol ester alcohol and acrylate; the combined solvent comprises absolute ethyl alcohol, isopropanol, n-propyl acetate and acetic ether. Compared with the prior art, the BOPP pearlised film environment-friendly ink has the advantages of being environment-friendly, non-toxic, bright in color, high in color saturation, good in shallow network transfer performance and good in level reproducibility.

The invention provides general insulation matte black electron gravure printing ink for PET and PI films and a preparation method thereof. The general insulation matte black electron gravure printingink comprises saturated polyester, modified polyurethane resin, hydroxyl acrylic resin, 0.1-2 parts of a dispersing agent, a leveling agent, urea formaldehyde resin modified extinction powder, white carbon black, talcum powder, ultrafine kaolin, polyethylene wax, carbon black, n-propyl acetate, ethyl acetate, saturated polyester B, an adhesion promoter and propylene glycol monomethyl ether acetate. The general insulation matte black electron gravure printing ink provided by the invention has the advantages that resin components, such as modified polyurethane resin and hydroxyl acrylic resin, with different physical and chemical properties are used, and adhesion of the gravure printing ink on base materials such as the PET and PI films is improved, so that the gravure printing ink can be respectively used on the two base materials, namely the PET film and the PI film, the work of using the printing ink on the different base materials is simplified, the cost of printing ink printing workis reduced, and the working efficiency is improved.

The invention discloses a formula of strip copper gold powder. The strip copper gold powder is prepared from copper gold powder with mass percentage of 80-85% and a liquid medicine A with mass percentage of 15-20%, wherein, the liquid medicine A comprises the following components based on mass percentage: 18-30% of rosin glycerol resin and 70-82% of n-propyl acetate. The preparation method comprises the following steps: (1) mixing the rosin glycerol resin with the n-propyl acetate according to the mass percentage, and uniformly stirring to obtain the liquid medicine A; (2) pouring the liquid medicine A into the copper gold powder according to the mass percentage, uniformly stirring and infiltrating; and (3) putting the infiltrated copper gold powder in a molding press to be extruded into strips, and air drying to obtain the strip copper gold powder. The strip copper gold powder prepared by the method has the advantages that the powder does not contain benzene, methanol and ketone, thus the environmental protection requirement is improved; the dust pollution is avoided when a user uses the strip copper gold powder so as to improve production conditions of an operation workshop; the damage on top-grade printing equipment can be avoided; and the powder has low cost and is convenient for sale and transportation.

The invention relates to the technical fields of a transfer film and a printing ink formulation, and particularly relates to sun-proof printing ink as well as a preparation method and an application thereof in a sun-proof transfer film. The sun-proof printing ink is prepared from the following components in parts by mass: 18-20 parts of inorganic paint, 1-1.5 parts of a wetting agent, 45-50 parts of acrylic resin liquid, 12-18 parts of cellulose acetate resin liquid, 1-1.5 parts of a dispersing agent, 1-1.5 parts of fumed silica, 5-6 parts of isopropanol and 12-15 parts of n-propyl acetate. The inorganic paint and the wetting agent are mixed and ground, so as to obtain paint powder with high fineness; the printing ink is uniformly mixed. The sun-proof printing ink is applied to the sun-proof transfer film, has a sun-proof level up to an 8 level, and is particularly suitable for printing outdoor products.

The invention discloses solvent type gravure pearlescent ink, belonging to the field of ink. The solvent type gravure pearlescent ink comprises the following components in percentage by weight: 10%-20% of pearlescent pigments, 10%-20% of solid resin, 10%-20% of ethyl acetate, 10%-25% of ethanol, 5%-10% of isopropanol, 20%-25% of n-propyl acetate, 5%-10% of propanediol butyl ether and 0.1%-5% of a compound aid, wherein the compound aid is a mixture of a dispersing agent, a wetting agent, a color spreading agent and a flattening agent. The invention further discloses a preparation method of the solvent type gravure pearlescent ink. The preparation method comprises the following steps: preparation of resin liquid, dispersion of the pearlescent pigments, mixing, and sand grinding. By virtue of environment-friendly solvents, the solvent type gravure pearlescent ink is free of benzene and halogenated hydrocarbon, low in toxicity and small in smell; the volatilization velocity of the ink is controlled by virtue of volatilization gradients of the different solvents, and the ink presents the relatively good glossiness and pearlescent effect; the preparation method is simple and practical; the production cost is effectively lowered, the ink is stable in quality and has strong universality in the field of gravure printing; a printed product has a good surface effect.

The invention discloses a high-flatness water transfer film coating and a preparation method thereof. The coating comprises the following components in percentage by weight: 5-10% of a dendritic amphiphilic polymer, 15-30% of polyacrylate resin, 1-5% of cellulose resin, 39.5-59.6% of ethyl acetate, 10-30% of n-propyl acetate, 0.1-0.5% of a defoaming agent and 0.2-0.5% of a flatting agent. According to the high-flatness water transfer film coating, based on a traditional water transfer formula, a certain proportion of the functional amphiphilic dendritic polymer is added so that by using the amphiphilic advantage of the functional amphiphilic dendritic polymer in water, the entire flatness of the water transfer coating in the water solubilization process of polyvinyl alcohol-based film is improved, the local wrinkling of the traditional water transfer coating is improved so that the entire bearing article flower pattern is flat and entirely aesthetic.

The invention provides a method for detecting migration amounts of volatile organic compounds in a paper packaging material to dry stimulants. According to the method, a standard sample and a to-be-detected sample are respectively used for trapping the volatile organic compounds by adopting a purging and trapping method, the standard sample is a standard working solution formed by respectively adding a certain amount of dry simulants into a series of volatile organic compounds with different concentrations, the volatile organic compounds comprise ethanol, isopropanol, n-propanol, ethyl acetate, 1-methoxy-2-propanol and n-propyl acetate, the to-be-detected sample is an aqueous solution formed by adding the same amount of dry stimulant into water after migration treatment is carried out by adopting the paper packaging material, and the addition volume of the water is the same as the addition volume of the volatile organic compounds during the preparation of the standard sample. The method improves the detection sensitivity, and is simple and environmentally friendly.

The invention relates to a surface treatment method for aluminium alloy decorated board, the aluminium alloy is soaked in sulfuric acid solution, washed by clear water, dried naturally and coated with acetone, benzene, and n-propyl acetate on the surface, blown on the surface by an air pump; and then is heated by a thyristor rectifier infrared heating device, coated with the polyester epoxy powder coating on the surface and heated by the thyristor rectifier infrared heating device again; and are roll coated with epoxy resin powder, butyl acetate, and industry paint color masterbatch to be made of lathework, heated, coated with varnish on the surface, and is heated again to get finished product of the aluminium alloy decorated board with the lathework. The invention has the advantages that the invention is acid resistant, alkali resistant, chemical corrosion resistant, and is not easy to paste with the chimney soot, and is of high inoxidability. The invention has no phenomenon of peeling and dulling, the varnish has no abscission. The pattern is of strong third dimension, soft and bright color, no discoloration and fastness. The manufacturing cost is lower.

The invention relates to the technical field of anti-counterfeiting ink and particularly relates to reversible pressure-sensitive-discoloration anti-counterfeiting ink and a preparation method thereof. The anti-counterfeiting ink disclosed by the invention contains the following ingredients in parts by weight: 11.64-12.6 parts of 1/4-second nitro-cotton, 7.76-8.4 parts of polyamide resin, 29.1-31.5 parts of reversible pressure-sensitive-discoloration capsule powder, 29.1-31.5 parts of n-propyl acetate, 19.4-21 parts of isopropanol, 0.19-0.21 part of leveling agent and 0.19-0.21 part of defoamer. Compared with the prior art, the reversible pressure-sensitive-discoloration anti-counterfeiting ink disclosed by the invention is in reversible color development, and a face printed with the ink is white; when the face is scratched by a nail, the face shows blue and returns to white a few seconds later, so that the ink can be repeatedly used; the principle of color restoration is as follows: achromatic restoration is achieved after substance molecules in capsule cores are re-crystallized, and the speed of re-crystallization is the speed of color restoration.

The invention discloses a high-solid low-viscosity laser alumite imaging layer coating and a preparation method thereof. The high-solid low-viscosity laser alumite imaging layer coating is prepared from the following raw materials in parts by weight: 10-30 parts of polymethyl methacrylate resin, 5-10 parts of styrene-maleic anhydride resin, 1-5 parts of cellulose acetate butyrate, 5-10 parts of isobornyl methacrylate, 1-5 parts of fluorine-containing polyacrylate, 50-70 parts of butanone, 1-8 parts of n-propyl acetate and 1-5 parts of propylene glycol ether. Polymer monomers contained in the formula of the imaging layer coating are of special structures or functional groups, and meanwhile comprehensive performance of polymer is taken into consideration; under the condition that the performance, such as heat resistance, of the polymer coating is not influenced, the viscosity of polymer solution can be obviously reduced, the using amount of an organic solvent is reduced, the leveling property of a coating film in the coating process is improved, and the coating film also has relatively low surface energy, so that acting force between a laser operating plate and a polymer coating layer in a high-temperature mold pressing process is reduced to achieve an effect of preventing plate adhesion.