CN112322092B - Alumite coloring layer coating with high wrapping capacity and preparation method thereof - Google Patents
Alumite coloring layer coating with high wrapping capacity and preparation method thereof Download PDFInfo
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- CN112322092B CN112322092B CN202011336957.5A CN202011336957A CN112322092B CN 112322092 B CN112322092 B CN 112322092B CN 202011336957 A CN202011336957 A CN 202011336957A CN 112322092 B CN112322092 B CN 112322092B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
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- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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Abstract
The invention provides an alumite coloring layer coating with high wrapping capacity and a preparation method thereof. In the production of dark-color electrochemical aluminum products, the quality defect of color aluminum separation is easy to occur due to the excessively high proportion of the coloring agent, and the cutting performance of the products is affected by the solution of increasing the thickness of the coating, so that the quality problems of 'gold flying' and the like are caused. The invention is prepared from the following raw materials in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate. The amido terminal amino contained in the colored layer coating is combined with the metal complex colorant molecule by an ionic bond, and the rest polar groups such as carbamido, carbamate and the like are combined with the metal complex colorant molecule by hydrogen bonds and Van der Waals force, so that the colored layer coating has a larger dyeing saturation value and is suitable for dyeing dark products. The paint film prepared by the hot stamping die has high hardness and good cutting performance, and solves the quality defects of gold flying and plate pasting in the hot stamping process.
Description
Technical Field
The invention relates to the technical field of thin film coating products, in particular to an alumite coloring layer coating with high wrapping capacity.
Background
The alumite is a common name of alumite hot stamping foil, is a common printing consumable material, is a hot stamping material prepared by coating paint and vacuum aluminizing superposition on a film base, and specifically comprises a film layer, a release layer, a coloring layer, a vacuum aluminized layer and an adhesive layer.
Wherein, the film layer is used as a transfer printing carrier of other coatings, is finally separated from the coatings under the action of hot pressing, and currently, a BOPET film with the thickness of 12 mu m is generally adopted; the release layer has the main function that under the hot pressing condition, the coloring layer, the aluminum plating layer and the adhesive layer can be quickly separated from the BOPET film and transferred and bonded on the surface of the object to be hot stamped, and the release layer has good separation performance; the main role of the coloured layer is two: first, display color; and secondly, the aluminum-plated layer pictures and texts on the surface of the hot stamping layer are protected from being oxidized. The coloring layer mainly contains a synthetic resin and a colorant having suitable film forming properties, heat resistance and transparency. Because the dye is used under the conditions of high temperature and high pressure, the selected colorant is a high-temperature-resistant metal complex dye, namely, metal ions and dye molecules are combined in a ratio of 1: 2; the aluminum coating mainly has the functions of reflecting light, changing the color performance of the coloring coating and enabling the coloring coating to show luster; the adhesive layer mainly has the functions of adhering the hot stamping material on the object to be hot stamped and protecting the aluminum layer.
The alumite has a glittering metallic luster, is uniform and bright in color and high in brightness, gives people strong visual impact, and can obtain any desired color through color adjustment of the colored layer, so that the alumite is increasingly applied to every corner of modern life. In the production of the alumite, particularly, the proportion of the colorant is too high in a dark color product with high colorant content, so that the colorant cannot be wrapped by the synthetic resin in the coloring layer, the colorant is in a free state like a disc of loose sand, a plurality of dyes separate the coloring layer from the aluminum layer, the resin cannot be attached to the aluminum layer, and the quality defect of color and aluminum separation, namely color retention, is easy to occur in the hot stamping process. The prior art generally adopts the method that the thickness of a coloring layer is increased, more resin is utilized to wrap a coloring agent, and the requirement of the color of dark color is finally met by increasing the thickness of the coating. However, the coating thickness is increased, so that a larger force is required to be applied to break the coating in the subsequent hot stamping process, the cutting property of the product is influenced, the saw-toothed shape of a fracture surface is obvious, the metal flying is serious, and the standard requirement of a client cannot be met.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the alumite coloring layer coating with high coloring agent wrapping rate, which is favorable for wrapping more metal complex coloring agent molecules, has a higher dyeing saturation value and is suitable for dark-colored products, and the preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical means: the alumite coloring layer coating with the high coating coloring agent comprises the following raw materials in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate.
The modified acrylic resin composition is a hydroxyl-containing high-temperature-resistant composition, the glass transition temperature of the composition is 75-95 ℃, and the composition comprises the following raw materials in parts by weight: 5-20 parts of methyl methacrylate, 1-15 parts of methacrylic acid-beta-hydroxypropyl, 1-10 parts of acrylamide, 1-5 parts of butyl acrylate, 1-10 parts of styrene, 1-5 parts of acrylic acid, 1-5 parts of an initiator, 1-5 parts of a chain regulator, 20-60 parts of butanone, 5-20 parts of n-propyl acetate and 1-10 parts of propylene glycol monoethyl ether.
Preferably, the modified acrylic resin composition is a hydroxyl-containing high-temperature-resistant composition, the glass transition temperature of the composition is 75-95 ℃, and the composition comprises the following raw materials in parts by weight: 8-12 parts of methyl methacrylate, 6-10 parts of methacrylic acid-beta-hydroxypropyl ester, 6-8 parts of acrylamide, 2-4 parts of butyl acrylate, 4-8 parts of styrene, 1-2 parts of acrylic acid, 1-2 parts of an initiator, 1-2 parts of a chain regulator, 40-50 parts of butanone, 8-15 parts of n-propyl acetate and 3-6 parts of propylene glycol monoethyl ether.
Wherein, the chemical formula of the methyl methacrylate is C5H8O2The chemical formula weight is 100.12, the glass transition temperature Tg378K, and the compound is an organic compound, also called MMA, and is abbreviated as methyl methacrylate. Is an important chemical raw material, and is a monomer for producing transparent plastic polymethyl methacrylate (polymethyl methacrylate, PMMA). It is flammable, has a strong pungent odor, and has moderate toxicity.
Beta-hydroxyethyl methacrylate, molecular weight 130.15. Appearance: a colorless transparent liquid; relative density 1.074; the freezing point is-12 ℃; boiling point 95 ℃ (1.33 kPa); a refractive index 1.4505; flash point (open cup) 108.3 ℃; solubility: dissolving in water and most organic solvents; flammability: is inflammable; toxicity: micro-toxicity, LD 5011200 mg/kg; glass transition temperature Tg 346K. The cross-linking monomer is used as a cross-linking monomer of a solvent or emulsion type acrylate adhesive. Also used as a reactive diluent of the light-cured adhesive.
Acrylamide (Acrylamide) of the formula C3H5NO, molecular weight 71.08, is colorless transparent flaky crystal, odorless, and toxic. The relative density is 1.122, the melting point is 84-85 ℃, and the glass transition temperature Tg is 438K. Dissolving in water and ethanol, and slightly dissolving in benzene and toluene. Contains double bonds and amide groups, has chemical general property of the double bonds, is easy to sublime and polymerize. Has wide application and can be used as raw materials for organic synthesis and high polymer materials.The polymer is soluble in water, so that the flocculant is used for producing a flocculant for water treatment, and particularly has a good effect on flocculation of protein and starch in water. Besides flocculation property, the flocculant also has excellent properties of thickening property, shearing resistance, resistance reduction, dispersibility and the like.
Butyl acrylate, colorless transparent liquid, insoluble in water, and miscible in ethanol and diethyl ether. Butyl acrylate (and methyl, ethyl and 2-ethylhexyl) belongs to soft monomers, and can be copolymerized, crosslinked, grafted and the like with various hard monomers such as methyl methacrylate, styrene, acrylonitrile, vinyl acetate and the like, and functional monomers such as hydroxyethyl (meth) acrylate, hydroxypropyl ester, glycidyl ester, (meth) acrylamide, derivatives thereof and the like to prepare 200-700 kinds of acrylic resin products (mainly emulsion type, solvent type and water-soluble type) which are used as coatings, adhesives, acrylic fiber modification, plastic modification, fiber and fabric processing, paper treating agents, leather processing, acrylic rubber and the like.
Styrene (Styrene) with the molecular formula C8H8The electron of vinyl is conjugated with benzene ring, is insoluble in water, has glass transition temperature Tg373K, is dissolved in ethanol and ether, and gradually undergoes polymerization and oxidation when exposed to air. Industrially, they are important monomers for synthetic resins, ion exchange resins, synthetic rubbers and the like.
Acrylic acid of the formula C3H4O2And the molecular weight is 72.06. Colorless liquid, pungent smell, corrosive and strong acid. Dissolving in water, ethanol and diethyl ether, and dissolving in benzene, acetone, chloroform, etc. Melting point 13.5 deg.C, boiling point 140.9 deg.C, density (20/4 deg.C) 1.0611g/cm3. Active in chemical nature. The product has easy substitution of alpha and beta hydrogen, and its carboxyl can generate ester, amide, acyl chloride, acid anhydride, etc.; the double bonds of the copolymer have the universality of double bonds, are chemically active, can be homopolymerized and copolymerized, have wide application range and are important chemical raw materials; the product and its esters can be used as polymer monomer; in addition, it can be used as a raw material for adhesives, paints, resins, etc.; the resin synthesized by the product can be used for preparing medicine, leather, textile, paper, and chemical productsFiber, rubber, building materials, plastics, packaging materials, water treatment, oil exploitation and other industrial aspects.
The initiator is Azobisisobutyronitrile (AIBN), and the chemical formula is C8H12N4，Dissolving in organic solvent such as methanol, ethanol, diethyl ether, acetone, petroleum ether and aniline. Decomposing under heat to release nitrogen and containing- (CH)2)2-C-CN organic cyanide. It can be decomposed slowly at room temp. and quickly at 100 deg.C, and can cause explosion and fire, and is inflammable. The initiator is used as a polymerization initiator for monomers such as polyvinyl chloride, polyvinyl alcohol, polystyrene and polyacrylonitrile, and is used as an initiator for polymerizing monomers such as vinyl chloride, vinyl acetate and acrylonitrile.
The chain regulator is dodecyl mercaptan, 1-Dodecanethiol, also known as lauryl mercaptan, 1-mercapto dodecane; 1-dodecanethiol. Molecular formula is C12H26S, molecular weight is 202.4; n-dodecyl mercaptan, a colorless, water-white or light yellow liquid, is slightly odorous. The main application is a polymerization regulator of synthetic rubber, synthetic fiber and synthetic resin; also used for producing polyvinyl chloride stabilizers, drugs, insecticides, bactericides, detergents, surface hydrophobic modifiers and the like. Used as regulator in the emulsion polymerization of styrene-butadiene rubber. Also used for manufacturing medicines, insecticides, bactericides and the like.
Butanone is an organic compound with the chemical formula CH3COCH2CH3And the molecular weight is 72.11. A colorless transparent liquid with an acetone-like odor. Is easy to volatilize. Can be mixed with ethanol, diethyl ether, benzene, chloroform, and oils. Dissolved in 4 parts of water, but the solubility decreased as the temperature increased. Can form an azeotropic mixture (containing 11.3 percent of water) with water, and has an azeotropic point of 73.4 ℃ (containing 88.7 percent of butanone). Relative density (d)20 4) Is 0.805. Freezing point-86 ℃. Boiling point 79.6 ℃. Refractive index (n)15 D)1.3814. Flash point 1.1 ℃. Low toxicity, half lethal dose (rat, oral) 3300 mg/kg. Is inflammable, and the vapor can form explosive mixture with air, and the explosion limit is 1.81-11.5 vol%. High concentration steam is anesthetic. Used as solvent of cellulose acetate, acrylic resin, alkyd resin, paint, ink, etc., binder of dye, and moisteningLubricant dewaxing agents, vulcanization accelerators, and the like.
Propyl acetate, also known as "n-propyl acetate" or "propyl acetate", is naturally found in strawberries, bananas and tomatoes. The product, which can be obtained by esterification of acetic acid with 1-propanol, has the typical properties of esters. Melting point: -92.5 ℃; boiling point: 101.6 ℃; relative density: 0.8878, respectively; refractive index: 1.383-1.385; flash point: at 14 ℃. It is colorless transparent liquid at normal temperature, and is soluble in ethanol and ether, and has special fruit fragrance. It is used as excellent solvent for paint, ink, nitro lacquer, varnish and various resins and in essence and perfume industry.
Propylene glycol monomethyl ether is colorless liquid, easily soluble in water, and has special odor. The boiling point is 120 ℃; melting point is-96 ℃; density (relative water = 1): 0.92; 1.4060 as the refractive index; the flash point is 38 ℃; autoignition temperature: 270 ℃; explosion limit: 1.9% -13.1 (volume) in air. Use in coatings: the product has low toxicity and strong dissolving power, is widely applied to solvents and coupling agents of printing ink, paint and water-based paint, is suitable for styrene-acrylic emulsion, acrylic emulsion and emulsion paint systems thereof, and has the characteristics of reducing film forming temperature, promoting condensation and film forming of the styrene-acrylic emulsion and ensuring that a coating film has a good state.
The glycidyl methacrylate is colorless transparent liquid, and has the relative molecular mass of 142.15; relative density (d)25）1.073g/cm3(ii) a Boiling point 75 deg.C (1.33 kPa); melting point is less than-50 ℃; glass transition temperature Tg (homopolymer) 46 ℃; flash point 84 ℃; refractive index (n)D 25) 1.449; hardly soluble in water and easily soluble in organic solvents; moderate toxicity, eye irritation, and skin irritation. Can be widely applied to the fields of polymer synthesis, medicines, photosensitive materials, coatings and the like. Because the molecule of the epoxy resin not only contains carbon-carbon double bonds, but also contains epoxy groups, the epoxy resin can carry out free radical polymerization and ionic polymerization reaction, and can also carry out crosslinking reaction through the epoxy groups; when used in paint resin, it can raise the hardness, glossiness, adhesion and weather resistance of the paint film, improve the coloring power of dye and raise the color fastness.
The crosslinking curing agent is blocked isocyanate taking HDI as a matrix, is transparent liquid, and has the viscosity (25 ℃) of 900-1100 mPa.s; solid content is 68-72%; NCO content: 10.7 percent; solvent: propylene glycol monomethyl ether; flash point: 39 ℃; specific gravity: 1.0-1.1; deblocking temperature: about 90 deg.c. The resin is suitable for a baking coating system, can provide good light resistance and chemical resistance, can obviously improve the adhesive force of the resin on metal, and has excellent flexibility.
The invention relates to a preparation method of an alumite coloring layer coating with a high coating coloring agent, which comprises the following steps:
preparation of modified acrylic resin composition:
a. respectively adding butanone, propylene glycol monoethyl ether and n-propyl acetate which are weighed according to the proportion into a reaction kettle, and heating to 80-100 ℃ for reflux;
b. synchronously dropwise adding methyl methacrylate, methacrylic acid-beta-hydroxypropyl, acrylamide, butyl acrylate, styrene, acrylic acid, an initiator azodiisobutyronitrile and a chain regulator dodecanethiol which are weighed according to the proportion;
c. after the dropwise addition is finished, the reaction is carried out for 2 hours under the condition of heat preservation;
d. detecting the solid content to be 35 +/-1%, cooling, and filtering by using a 200-mesh screen to obtain the modified acrylic resin composition for later use.
Preparation of the alumite coloring layer coating with high coating colorant:
a. butanone and n-propyl acetate which are weighed according to the proportion are respectively added into a container, and are stirred for 3-5min at normal temperature at the rotating speed of 100-300r/min, so as to obtain the mixture A which is easy to be uniformly mixed for later use;
b. and respectively adding the modified acrylic resin composition, the glycidyl methacrylate and the crosslinking curing agent which are weighed according to the proportion into the mixed solvent A, and stirring at the rotating speed of 500-1000r/min for 30min at normal temperature to obtain the electrochemical aluminum coloring layer coating with the high-coating colorant.
The invention has the following beneficial effects: the colored layer coating has a double film forming mode of hydroxyl and isocyanate crosslinking curing and epoxy ring opening polymerization at high temperature, and the double film forming mode has excellent film forming performance and is more beneficial to wrapping more metal complexing colorant molecules.
Secondly, the amido end amino group contained in the colored layer coating is combined with the metal complex colorant molecule by an ionic bond, and the other polar groups such as carbamido, carbamate and the like are combined with the metal complex colorant molecule by hydrogen bond and Van der Waals force, so that the colored layer coating has a larger dyeing saturation value and is suitable for dyeing dark products.
The colored layer coating has high glass transition temperature, a paint film prepared from the colored layer coating has high hardness and good cutting performance, and the cut edge is smooth, neat and jagged, so that the quality defects of gold flying and plate pasting in the hot stamping process are overcome.
Detailed Description
Example 1
An alumite coloring layer coating with high coating coloring agent comprises the following specific formula in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate.
The modified acrylic resin composition comprises the following raw materials in parts by weight: 10 parts of methyl methacrylate, 10 parts of methacrylic acid-beta-hydroxypropyl ester, 6 parts of acrylamide, 4 parts of butyl acrylate, 4 parts of styrene, 1 part of acrylic acid, 2 parts of azodiisobutyronitrile serving as an initiator, 1 part of dodecyl mercaptan serving as a chain regulator, 47 parts of butanone, 10 parts of n-propyl acetate and 5 parts of propylene glycol monoethyl ether.
The production is carried out according to the following steps:
preparation of modified acrylic resin composition:
a. respectively adding butanone, propylene glycol monoethyl ether and n-propyl acetate which are weighed according to the proportion into a reaction kettle, and heating to 80-100 ℃ for reflux;
b. synchronously dropwise adding methyl methacrylate, methacrylic acid-beta-hydroxypropyl, acrylamide, butyl acrylate, styrene, acrylic acid, an initiator azodiisobutyronitrile and a chain regulator dodecanethiol which are weighed according to the proportion;
c. after the dropwise addition is finished, the reaction is carried out for 2 hours under the condition of heat preservation;
d. detecting the solid content to be 35 +/-1%, cooling, and filtering by using a 200-mesh screen to obtain the modified acrylic resin composition for later use.
Preparation of the alumite coloring layer coating with high coating colorant:
a. butanone and n-propyl acetate which are weighed according to the proportion are respectively added into a container, and are stirred for 3-5min at normal temperature at the rotating speed of 100-300r/min, so as to obtain the mixture A which is easy to be uniformly mixed for later use;
b. and respectively adding the modified acrylic resin composition, the glycidyl methacrylate and the crosslinking curing agent which are weighed according to the proportion into the mixed solvent A, and stirring at the rotating speed of 500-1000r/min for 30min at normal temperature to obtain the electrochemical aluminum coloring layer coating with the high-coating colorant.
According to the ratio of 1:10, directly adding a three-color mixed powder metal complex colorant into the prepared alumite coloring layer coating with high coating colorant, stirring at the rotating speed of 500-1000r/min for 30min at normal temperature, and filtering by a 200-mesh screen. Passing through a 180-mesh 200-mesh screen roller in an environment with the humidity of 50-60 percent at the speed of 1.2g/m2The dry coating amount is coated on a BOPET film, the deep-color alumite hot stamping foil is prepared after vacuum aluminum plating, gluing, slitting and rewinding, the deep-color alumite hot stamping foil is hot stamped on tipping paper at a certain temperature and pressure, a hot stamping layer is smooth and clear, hot stamping quality defects such as 'color retention' and 'gold flying' are avoided, and the standard requirements of customers are completely met.
Example 2
An alumite coloring layer coating with high coating coloring agent comprises the following specific formula in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate.
The modified acrylic resin composition comprises the following raw materials in parts by weight: 8 parts of methyl methacrylate, 8 parts of methacrylic acid-beta-hydroxypropyl ester, 7 parts of acrylamide, 3 parts of butyl acrylate, 8 parts of styrene, 1 part of acrylic acid, 2 parts of azodiisobutyronitrile serving as an initiator, 1 part of dodecyl mercaptan serving as a chain regulator, 47 parts of butanone, 10 parts of n-propyl acetate and 5 parts of propylene glycol monoethyl ether.
The production is carried out according to the following steps:
preparation of modified acrylic resin composition:
a. respectively adding butanone, propylene glycol monoethyl ether and n-propyl acetate which are weighed according to the proportion into a reaction kettle, and heating to 80-100 ℃ for reflux;
b. synchronously dropwise adding methyl methacrylate, methacrylic acid-beta-hydroxypropyl, acrylamide, butyl acrylate, styrene, acrylic acid, an initiator azodiisobutyronitrile and a chain regulator dodecanethiol which are weighed according to the proportion;
c. after the dropwise addition is finished, the reaction is carried out for 2 hours under the condition of heat preservation;
d. detecting the solid content to be 35 +/-1%, cooling, and filtering by using a 200-mesh screen to obtain the modified acrylic resin composition for later use.
Preparation of the alumite coloring layer coating with high coating colorant:
a. butanone and n-propyl acetate which are weighed according to the proportion are respectively added into a container, and are stirred for 3-5min at normal temperature at the rotating speed of 100-300r/min, so as to obtain the mixture A which is easy to be uniformly mixed for later use;
b. and respectively adding the modified acrylic resin composition, the glycidyl methacrylate and the crosslinking curing agent which are weighed according to the proportion into the mixed solvent A, and stirring at the rotating speed of 500-1000r/min for 30min at normal temperature to obtain the electrochemical aluminum coloring layer coating with the high-coating colorant.
According to the ratio of 1:10, directly adding the four-color blended powder metal complex colorant into the prepared alumite coloring layer coating with high coating colorant, stirring at the rotating speed of 500-1000r/min for 30min at normal temperature, and filtering by a 200-mesh screen. Passing through a 180-mesh 200-mesh screen roller in an environment with the humidity of 50-60 percent at the speed of 1.2g/m2The dry coating amount is coated on a BOPET film, the deep-color alumite hot stamping foil is prepared after vacuum aluminum plating, gluing, slitting and rewinding, the deep-color alumite hot stamping foil is hot stamped on tipping paper at a certain temperature and pressure, a hot stamping layer is smooth and clear, hot stamping quality defects such as 'color retention' and 'gold flying' are avoided, and the standard requirements of customers are completely met.
Example 3
An alumite coloring layer coating with high coating coloring agent comprises the following specific formula in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate.
The modified acrylic resin composition comprises the following raw materials in parts by weight: 12 parts of methyl methacrylate, 6 parts of methacrylic acid-beta-hydroxypropyl, 8 parts of acrylamide, 2 parts of butyl acrylate, 6 parts of styrene, 1 part of acrylic acid, 2 parts of azobisisobutyronitrile, 1 part of dodecyl mercaptan, 47 parts of butanone, 10 parts of n-propyl acetate and 5 parts of propylene glycol monoethyl ether.
The production is carried out according to the following steps:
preparation of modified acrylic resin composition:
a. respectively adding butanone, propylene glycol monoethyl ether and n-propyl acetate which are weighed according to the proportion into a reaction kettle, and heating to 80-100 ℃ for reflux;
b. synchronously dropwise adding methyl methacrylate, methacrylic acid-beta-hydroxypropyl, acrylamide, butyl acrylate, styrene, acrylic acid, an initiator azodiisobutyronitrile and a chain regulator dodecanethiol which are weighed according to the proportion;
c. after the dropwise addition is finished, the reaction is carried out for 2 hours under the condition of heat preservation;
d. detecting the solid content to be 35 +/-1%, cooling, and filtering by using a 200-mesh screen to obtain the modified acrylic resin composition for later use.
Preparation of the alumite coloring layer coating with high coating colorant:
a. butanone and n-propyl acetate which are weighed according to the proportion are respectively added into a container, and are stirred for 3-5min at normal temperature at the rotating speed of 100-300r/min, so as to obtain the mixture A which is easy to be uniformly mixed for later use;
b. and respectively adding the modified acrylic resin composition, the glycidyl methacrylate and the crosslinking curing agent which are weighed according to the proportion into the mixed solvent A, and stirring at the rotating speed of 500-1000r/min for 30min at normal temperature to obtain the electrochemical aluminum coloring layer coating with the high-coating colorant.
According to the ratio of 1:10, directly adding the five-color mixed powder metal complex colorant into the prepared alumite coloring layer coating with high coating colorant, stirring at the rotating speed of 500-1000r/min for 30min at normal temperature, and filtering by a 200-mesh screen. Passing through 180-20% in 50-60% humidity environment0 mesh screen roller at 1.2g/m2The dry coating amount is coated on a BOPET film, the deep-color alumite hot stamping foil is prepared after vacuum aluminum plating, gluing, slitting and rewinding, the deep-color alumite hot stamping foil is hot stamped on tipping paper at a certain temperature and pressure, a hot stamping layer is smooth and clear, hot stamping quality defects such as 'color retention' and 'gold flying' are avoided, and the standard requirements of customers are completely met.
Example 4
An alumite coloring layer coating with high coating coloring agent comprises the following specific formula in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate.
The modified acrylic resin composition comprises the following raw materials in parts by weight: 20 parts of methyl methacrylate, 8 parts of methacrylic acid-beta-hydroxypropyl, 10 parts of acrylamide, 4 parts of butyl acrylate, 3 parts of styrene, 5 parts of acrylic acid, 4 parts of azobisisobutyronitrile, 5 parts of dodecyl mercaptan, 20 parts of butanone, 15 parts of n-propyl acetate and 6 parts of propylene glycol monoethyl ether.
The specific production steps are the same as in example 1.
Example 5
An alumite coloring layer coating with high coating coloring agent comprises the following specific formula in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate.
The modified acrylic resin composition comprises the following raw materials in parts by weight: 10 parts of methyl methacrylate, 3 parts of methacrylic acid-beta-hydroxypropyl, 2 parts of acrylamide, 2 parts of butyl acrylate, 5 parts of styrene, 3 parts of acrylic acid, 3 parts of initiator azobisisobutyronitrile, 4 parts of chain regulator dodecanethiol, 60 parts of butanone, 5 parts of n-propyl acetate and 3 parts of propylene glycol monoethyl ether.
The specific production steps are the same as in example 1.
Claims (5)
1. The alumite coloring layer coating with the high coating content is characterized by comprising the following raw materials in parts by weight: 40 parts of modified acrylic resin composition, 15 parts of glycidyl methacrylate, 5 parts of crosslinking curing agent, 35 parts of butanone and 5 parts of n-propyl acetate; the modified acrylic resin composition is a hydroxyl-containing high-temperature-resistant composition, the glass transition temperature of the modified acrylic resin composition is 75-95 ℃, and the modified acrylic resin composition is prepared from the following raw materials in parts by weight: 5-20 parts of methyl methacrylate, 1-15 parts of methacrylic acid-beta-hydroxypropyl, 1-10 parts of acrylamide, 1-5 parts of butyl acrylate, 1-10 parts of styrene, 1-5 parts of acrylic acid, 1-5 parts of an initiator, 1-5 parts of a chain regulator, 20-60 parts of butanone, 5-20 parts of n-propyl acetate and 1-10 parts of propylene glycol monoethyl ether; the crosslinking curing agent is blocked isocyanate with HDI as a matrix.
2. The alumite coloring layer coating material with high coating color of claim 1 is characterized in that the modified acrylic resin composition comprises the following raw materials in parts by weight: 8-12 parts of methyl methacrylate, 6-10 parts of methacrylic acid-beta-hydroxypropyl ester, 6-8 parts of acrylamide, 2-4 parts of butyl acrylate, 4-8 parts of styrene, 1-2 parts of acrylic acid, 1-2 parts of an initiator, 1-2 parts of a chain regulator, 40-50 parts of butanone, 8-15 parts of n-propyl acetate and 3-6 parts of propylene glycol monoethyl ether.
3. The alumite coloring layer coating with high coating color of claim 1 or 2, wherein the initiator is azobisisobutyronitrile.
4. The alumite colored layer coating with high coating color of claim 1 or 2, characterized in that the chain regulator is dodecyl mercaptan.
5. The method for preparing the alumite coloring layer coating with high coating color according to any one of claims 1 to 4, characterized by comprising the following steps:
(1) preparation of modified acrylic resin composition:
a. respectively adding butanone, propylene glycol monoethyl ether and n-propyl acetate which are weighed according to the proportion into a reaction kettle, and heating to 80-100 ℃ for reflux;
b. synchronously dropwise adding methyl methacrylate, methacrylic acid-beta-hydroxypropyl, acrylamide, butyl acrylate, styrene, acrylic acid, an initiator azodiisobutyronitrile and a chain regulator dodecanethiol which are weighed according to the proportion;
c. after the dropwise addition is finished, the reaction is carried out for 2 hours under the condition of heat preservation;
d. detecting that the solid content is 35 +/-1%, cooling, and filtering by using a 200-mesh screen to obtain a modified acrylic resin composition for later use;
(2) preparation of the alumite coloring layer coating with high coating colorant:
a. butanone and n-propyl acetate which are weighed according to the proportion are respectively added into a container, and stirred for 3-5min at normal temperature at the rotating speed of 100-300r/min to obtain a uniform mixed solvent A for later use;
b. and respectively adding the modified acrylic resin composition, the glycidyl methacrylate and the crosslinking curing agent which are weighed according to the proportion into the mixed solvent A, and stirring at the rotating speed of 500-1000r/min for 30min at normal temperature to obtain the electrochemical aluminum coloring layer coating with the high-coating colorant.
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| CN115595056B (en) * | 2022-12-15 | 2023-03-10 | 佛山市金镭科技有限公司 | Alumite water-based color layer coating for realizing high-speed coating and preparation method thereof |
| CN116589950B (en) * | 2023-04-07 | 2024-02-23 | 扬州市祥华新材料科技有限公司 | Electric aluminum hot stamping back adhesive and preparation method thereof |
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| EP1086975A1 (en) * | 1998-04-15 | 2001-03-28 | Mikuni Shikiso Kabushiki Kaisha | Aqueous pigment dispersion, process for producing the same, and water-based ink comprising the same |
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| CN102351979B (en) * | 2011-07-19 | 2013-11-06 | 上海凯兰达实业有限公司 | Acrylic resin coating liquid for alumite coloring layer and preparation method thereof |
| CN102702810A (en) * | 2012-05-15 | 2012-10-03 | 东莞市东莹镭射科技有限公司 | Coloring layer coating liquid of alumite hot stamping foil |
| CN105500853A (en) * | 2014-09-22 | 2016-04-20 | 昆山市生力包装材料有限公司 | Double-sided color electric aluminum hot stamping foil and production method thereof |
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