CN113062145A - High-adhesion water-based primer for cat eye laser paper and preparation method - Google Patents
High-adhesion water-based primer for cat eye laser paper and preparation method Download PDFInfo
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- CN113062145A CN113062145A CN202110309403.4A CN202110309403A CN113062145A CN 113062145 A CN113062145 A CN 113062145A CN 202110309403 A CN202110309403 A CN 202110309403A CN 113062145 A CN113062145 A CN 113062145A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/60—Waxes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/22—Agents rendering paper porous, absorbent or bulky
- D21H21/24—Surfactants
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Abstract
The invention relates to the technical field of water-based base coat materials, and discloses a high-adhesion water-based base coat for cat eye laser paper and a preparation method thereof, wherein the high-adhesion water-based base coat is prepared from the following raw materials in parts by mass: 25-35 parts of water-based acrylic emulsion, 12-24 parts of water-based polyurethane dispersion, 3-8 parts of water-based acrylic solid resin, 1-2 parts of film-forming additive, 1-2 parts of wetting agent, 0.2-0.3 part of defoaming agent, 0.5-1 part of pH value regulator, 3-8 parts of anti-scratching wax slurry, 20-30 parts of water and 12-18 parts of cosolvent. The cat eye laser paper provided by the invention has good reprinting property and scratch resistance. The cat eye laser paper does not need to be added with an organic solvent, and the whole formula does not contain organic solvents such as ketones, benzenes and esters, so that the cat eye laser paper has good environmental protection performance.
Description
Technical Field
The invention relates to the technical field of water-based base coat materials, in particular to a high-adhesion water-based base coat for cat eye laser paper and a preparation method thereof.
Background
Nowadays, the product packaging industry is developed at a leap and leap forward, the durability of the packaging material to the color pattern are gradually innovated, and the personalized design is increased day by day. The first thing a product is purchased sees is the packaging, so the appreciation and the applicability of the packaging are of great importance.
The important process for manufacturing the cat eye laser paper packaging product is image-text printing, and whether the printed product can be durable is an important investigation item in the printing industry. Feedback is often encountered in packaging or printing factories, and when a printed product is molded, the printed film layer is folded in half for 3 times at the position of the indentation with the printed pattern, so that the phenomenon of bursting occurs. And the adhesive force of the printing film layer is poor, so that the colored pattern is easy to be stuck along with the adhesive tape when the adhesive tape on the colored pattern surface of the cat eye laser paper is torn. There are also some problems of poor leveling of the printing effect, such as moire or shadow, etc., which do not give the desired effect regardless of the adjustment or replacement of the ink. The problems cannot be completely solved by paper and ink changing, time and energy are wasted in the frequent replacement process of the paper and the ink, and the operation cost is greatly increased.
A solution has been created for this purpose, namely that the printed substrate is first surface-treated: the method is characterized in that a layer of base coat is preprinted, different base coats are selected according to different specific requirements of products, however, the cat eye laser paper base coat types are numerous, wrong types are often used carelessly, the method is suitable for the wrong types, the management is inconvenient, and time and energy are wasted in the process of selecting the cat eye laser paper base coat types.
Therefore, how to provide a high-adhesion water-based primer for cat eye laser paper, which integrates various requirements such as flexibility, high adhesion, good reprinting property and the like, meets different requirements of products, improves the phenomenon of package folding and bursting, is convenient to use and manage, and is a technical problem to be solved in the field.
Disclosure of Invention
In view of the above, the invention discloses a high-adhesion water-based base coat for cat eye laser paper, which solves the problems that cat eye laser paper in the prior art is poor in flexibility, poor in adhesion and reprinting performance, the types of base coats are numerous, wrong types are often used, and management is inconvenient, and time and energy are wasted in the process of selecting the types of the cat eye laser paper base coats.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-adhesion water-based primer for the cat eye laser paper comprises the following raw materials in parts by weight: 25-35 parts of water-based acrylic emulsion, 12-24 parts of water-based polyurethane dispersion, 3-8 parts of water-based acrylic solid resin, 1-2 parts of film-forming additive, 1-2 parts of wetting agent, 0.2-0.3 part of defoaming agent, 0.5-1 part of pH value regulator, 3-8 parts of anti-scratching wax slurry, 20-30 parts of water and 12-18 parts of cosolvent.
Preferably, the aqueous acrylic emulsion is an aqueous styrene acrylic emulsion or a modified acrylic emulsion.
Preferably, the glass transition temperature of the water-based acrylic solid resin is 50-90 ℃.
Preferably, the pH regulator is 2-amino-2-methyl-1-propanol, monoethanolamine or triethanolamine.
Preferably, the anti-scratching wax slurry is D-816 anti-scratching wax slurry
Preferably, the film forming aid is propylene glycol methyl ether or dipropylene glycol methyl ether.
Preferably, the wetting agent is an anionic surfactant.
Preferably, the defoaming agent is BYK019 polyether modified organic silicon solution.
Preferably, the cosolvent is ethanol, isopropanol or n-propanol.
The invention also aims to provide a preparation method of the high-adhesion water-based primer for cat eye laser paper, which comprises the following specific preparation steps:
1) preparation of aqueous acrylic acid solution: weighing the aqueous acrylic acid solid resin according to the weight percentage, mixing the aqueous acrylic acid solid resin with part of cosolvent, pH regulator and water, dispersing at a high speed until solid particles are completely dissolved, and filtering by using a 200-mesh gauze to prepare an aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: adding anti-scratching wax slurry, part of water and a cosolvent into part of the aqueous acrylic acid solution prepared in the step 1), dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain anti-scratching auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of water and cosolvent, adding the water-based acrylic emulsion, the film-forming aid and the wetting agent according to the weight parts, stirring at the speed of 800-1000 rpm for 20-25 minutes, and slowly adding the defoaming agent in the stirring process until no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the aqueous base coating emulsion prepared in the step 3), adding the aqueous polyurethane dispersion and the residual pH regulator, and stirring for 5-10 minutes at the rotation speed of 600-800 r/min; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
Preferably, the pH regulator added in the step 1) is 80-89% of the total amount of the pH regulator.
Preferably, the ratio of the cosolvent added in the steps 1), 2) and 3) is 3.6-7.5: 0.4-0.5: 8-11.45 in sequence.
Preferably, the amount of the aqueous acrylic acid solution added in the step 2) is 17-28% of the total amount of the aqueous acrylic acid solution prepared in the step 1).
Preferably, the ratio of the water added in the step 1), the step 2) and the step 3) is 6.5-11.3: 0.3-0.45: 11.2-18.25 in sequence.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
according to the invention, the water-based acrylic emulsion is used as the main resin, so that the cat eye laser paper has good reprinting property of high-adhesion water-based primer; the water-based polyurethane dispersoid selected by the invention can improve the flexibility and the adhesion fastness of the ink; the invention selects the water-based acrylic acid solution prepared by the water-based acrylic acid solid resin, which can improve the drying performance of the water-based base coat; the wetting agent is selected to reduce the high surface tension brought by water, improve the leveling property during the printing of the base coat, provide good reprinting property and endow the water-based base coat with higher scratch resistance; the water-based base coat product is easy to foam, the BYK019 polyether modified organic silicon solution defoamer is selected to eliminate micro bubbles and inhibit foaming, so that the defoaming agent can inhibit foaming for a long time, printing faults caused by bubbles can be avoided in the printing process, and because the water-based base coat is adopted, no organic solvent is added, and no organic solvents such as ketones, benzenes and esters exist in the whole formula, so that the emission of harmful gas is avoided, and the environmental protection requirement is met.
Detailed Description
The invention discloses a high-adhesion water-based primer for cat eye laser paper, which comprises the following raw materials in parts by weight: 25-35 parts of water-based acrylic emulsion, 12-24 parts of water-based polyurethane dispersion, 3-8 parts of water-based acrylic solid resin, 1-2 parts of film-forming additive, 1-2 parts of wetting agent, 0.2-0.3 part of defoaming agent, 0.5-1 part of pH value regulator, 3-8 parts of anti-scratching wax slurry, 20-30 parts of water and 12-18 parts of cosolvent.
In the present invention, the aqueous acrylic emulsion is preferably an aqueous styrene acrylic emulsion or a modified acrylic emulsion, and more preferably an aqueous styrene acrylic emulsion.
In the present invention, the amount of the aqueous acrylic emulsion added is 25 to 35 parts, preferably 28 to 32 parts, and more preferably 31.6 parts.
In the present invention, the amount of the aqueous polyurethane dispersion added is 12 to 24 parts, preferably 16 to 20 parts, and more preferably 18 parts.
In the invention, the glass transition temperature of the water-based acrylic solid resin is 50-90 ℃, preferably 60-80 ℃, and more preferably 70 ℃.
In the present invention, the amount of the aqueous acrylic solid resin added is 3 to 8 parts, preferably 4 to 6 parts, and more preferably 5 parts.
In the present invention, the film-forming aid is preferably propylene glycol methyl ether or dipropylene glycol methyl ether, and more preferably propylene glycol methyl ether.
In the present invention, the amount of the film-forming aid added is 1 to 2 parts, preferably 1.2 to 1.8 parts, and more preferably 1.5 parts.
In the present invention, the wetting agent is preferably an anionic surfactant.
In the present invention, the amount of the wetting agent added is 1 to 2 parts, preferably 1.2 to 1.8 parts, and more preferably 1.5 parts.
In the present invention, the pH adjusting agent is preferably 2-amino-2-methyl-1-propanol, monoethanolamine or triethanolamine, and more preferably 2-amino-2-methyl-1-propanol.
In the present invention, the amount of the pH adjustor to be added is 0.5 to 1 part, preferably 0.6 to 0.9, and more preferably 0.8.
In the present invention, the scratch-resistant wax slurry is preferably D-816 scratch-resistant wax slurry.
In the present invention, the amount of the scratch-resistant wax slurry added is 3 to 8 parts, preferably 4 to 5 parts, and more preferably 4.5 parts.
In the present invention, the amount of water added is 20 to 30 parts, preferably 23 to 27 parts, and more preferably 24 parts.
In the present invention, the cosolvent is preferably ethanol, isopropanol or n-propanol, and more preferably ethanol.
In the present invention, the amount of the cosolvent added is 12 to 18 parts, preferably 15 to 17 parts, and more preferably 15.9 parts.
The invention also provides a preparation method of the high-adhesion water-based primer for the cat eye laser paper, which comprises the following specific preparation steps:
1) preparation of aqueous acrylic acid solution: weighing the aqueous acrylic acid solid resin according to the weight percentage, mixing the aqueous acrylic acid solid resin with part of cosolvent, pH regulator and water, dispersing at a high speed until solid particles are completely dissolved, and filtering by using a 200-mesh gauze to prepare an aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: adding anti-scratching wax slurry, part of water and a cosolvent into part of the aqueous acrylic acid solution prepared in the step 1), dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain anti-scratching auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of water and cosolvent, adding the water-based acrylic emulsion, the film-forming aid and the wetting agent according to the weight parts, stirring at the speed of 800-1000 rpm for 20-25 minutes, and slowly adding the defoaming agent in the stirring process until no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the aqueous base coating emulsion prepared in the step 3), adding the aqueous polyurethane dispersion and the residual pH regulator, and stirring for 5-10 minutes at the rotation speed of 600-800 r/min; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
In the invention, the pH regulator added in the step 1) is 80-89% of the total amount of the pH regulator, and is preferably 87.5%.
In the invention, the ratio of the cosolvent added in the steps 1), 2) and 3) is 3.6-7.5: 0.4-0.5: 8-11.45, preferably 4:0.45: 11.45.
In the present invention, the amount of the aqueous acrylic acid solution added in step 2) is 17 to 28%, preferably 21.49% of the total amount of the aqueous acrylic acid solution prepared in step 1).
In the invention, the ratio of the water added in the step 1), the step 2) and the step 3) is 6.5-11.3: 0.3-0.45: 11.2-18.25, preferably 7.15:0.45: 16.4.
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The high-adhesion water-based primer for the cat eye laser paper comprises the following raw materials in parts by weight: 32 parts of water-based styrene acrylic emulsion, 24 parts of water-based polyurethane dispersion, 8 parts of water-based acrylic solid resin, 2 parts of propylene glycol methyl ether, 1 part of OT-75 base material wetting agent, 0.2 part of BYK019 polyether modified organic silicon solution defoaming agent, 1 part of triethanolamine, 4 parts of wax slurry, 25 parts of water and 18 parts of ethanol.
The preparation method comprises the following specific steps:
1) preparation of aqueous acrylic acid solution: weighing 8 parts by weight of aqueous acrylic solid resin, mixing with 7.5 parts by weight of ethanol, 0.8 part by weight of triethanolamine and 7.65 parts by weight of water, dispersing at high speed until solid particles are completely dissolved, and filtering with 200-mesh gauze to obtain 23.95 parts by weight of aqueous acrylic solution;
2) preparing anti-scratching additive slurry: taking 4.1 parts of the aqueous acrylic acid solution prepared in the step 1), adding 4 parts of scratch-resistant wax slurry, 0.5 part of ethanol and 0.45 part of water, dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain scratch-resistant auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of 16.9 parts of water, 10 parts of ethanol, 32 parts of water-based styrene acrylic emulsion, 2 parts of propylene glycol methyl ether and 1 part of OT-75 base material wetting agent, stirring at the speed of 1000 revolutions per minute for 22 minutes, and slowly adding 0.2 part of BYK019 defoaming agent after stirring till no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the water-based base coat emulsion prepared in the step 3), adding 24 parts of aqueous polyurethane dispersion and the residual 0.2 part of triethanolamine, and stirring for 8 minutes at the rotating speed of 750 revolutions per minute; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
Example 2
The high-adhesion water-based primer for the cat eye laser paper comprises the following raw materials in parts by weight: 35 parts of water-based styrene acrylic emulsion, 18 parts of water-based polyurethane dispersoid, 3 parts of water-based acrylic solid resin, 1 part of dipropylene glycol methyl ether, 2 parts of OT-75 base material wetting agent, 0.2 part of BYK019 polyether modified organic silicon solution defoaming agent, 0.5 part of 2-amino-2-methyl-1-propanol, 8 parts of wax slurry, 20 parts of water and 12 parts of isopropanol.
The preparation method comprises the following specific steps:
1) preparation of aqueous acrylic acid solution: weighing 3 parts by weight of aqueous acrylic acid solid resin, mixing with 3.6 parts by weight of isopropanol, 0.4 part by weight of 2-amino-2-methyl-1-propanol and 7.5 parts by weight of water, dispersing at high speed until solid particles are completely dissolved, and filtering with a 200-mesh gauze to obtain 14.4 parts by weight of aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: taking 4 parts of the aqueous acrylic acid solution prepared in the step 1), adding 8 parts of scratch-resistant wax slurry, 0.4 part of isopropanol and 0.3 part of water, dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain scratch-resistant auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of 11.2 parts of water, 8 parts of isopropanol, 35 parts of aqueous styrene acrylic emulsion, 1 part of dipropylene glycol methyl ether and 2 parts of OT-75 base material wetting agent, stirring at the speed of 1000 revolutions per minute for 25 minutes, and slowly adding 0.2 part of BYK019 defoaming agent until no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the water-based base coat emulsion prepared in the step 3), adding 18 parts of aqueous polyurethane dispersion and the residual 0.1 part of pH regulator, and stirring for 8 minutes at the rotating speed of 750 revolutions per minute; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
Example 3
The high-adhesion water-based primer for the cat eye laser paper comprises the following raw materials in parts by weight: 31.6 parts of water-based styrene acrylic emulsion, 18 parts of water-based polyurethane dispersoid, 5 parts of water-based acrylic solid resin, 1.5 parts of propylene glycol methyl ether, 1.5 parts of OT-75 base material wetting agent, 0.25 part of BYK019 polyether modified organic silicon solution defoaming agent, 0.8 part of 2-amino-2-methyl-1-propanol, 4.5 parts of wax slurry, 24 parts of water and 15.9 parts of ethanol.
The preparation method comprises the following specific steps:
1) preparation of aqueous acrylic acid solution: weighing 5 parts of aqueous acrylic acid solid resin according to parts by weight, mixing with 4 parts of ethanol, 0.7 part of 2-amino-2-methyl-1-propanol and 7.15 parts of water, dispersing at high speed until solid particles are completely dissolved, and filtering by using a 200-mesh gauze to prepare 16.75 parts of aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: taking 3.6 parts of the aqueous acrylic acid solution prepared in the step 1), adding 4.5 parts of wax slurry, 0.45 part of ethanol and 0.45 part of water, dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain anti-scratching auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of 16.4 parts of water, 11.45 parts of ethanol, 31.6 parts of water-based acrylic emulsion, 1.5 parts of propylene glycol methyl ether and 1.5 parts of OT-75 base material wetting agent, stirring at the speed of 1000 revolutions per minute for 24 minutes, and slowly adding 0.25 part of BYK019 defoaming agent after stirring till no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the water-based base coat emulsion prepared in the step 3), adding 18 parts of aqueous polyurethane dispersion and the residual 0.1 part of 2-amino-2-methyl-1-propanol, and stirring for 8 minutes at the rotating speed of 750 revolutions per minute; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
Example 4
The high-adhesion water-based primer for the cat eye laser paper comprises the following raw materials in parts by weight: 25 parts of modified acrylic emulsion, 12 parts of waterborne polyurethane dispersion, 8 parts of waterborne acrylic solid resin, 1.2 parts of propylene glycol methyl ether, 1.8 parts of OT-75 base material wetting agent, 0.3 part of BYK019 polyether modified organic silicon solution defoamer, 0.9 part of triethanolamine, 6 parts of wax slurry, 30 parts of water and 16.5 parts of ethanol.
The preparation method comprises the following specific steps:
1) preparation of aqueous acrylic acid solution: weighing 8 parts by weight of aqueous acrylic acid solid resin, mixing with 6 parts by weight of ethanol, 0.8 part by weight of triethanolamine and 11.3 parts by weight of water, dispersing at high speed until solid particles are completely dissolved, and filtering with a 200-mesh gauze to obtain 28.1 parts by weight of aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: taking 5 parts of the aqueous acrylic acid solution prepared in the step 1), adding 6 parts of wax slurry, 0.5 part of ethanol and 0.45 part of water, dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain anti-scratching auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of 18.25 parts of water, 10 parts of ethanol, 25 parts of modified acrylic emulsion, 1.2 parts of propylene glycol methyl ether and 1.8 parts of OT-75 base material wetting agent, stirring at the speed of 1000 revolutions per minute for 22 minutes, and slowly adding 0.3 part of BYK019 defoaming agent until no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the water-based base coat emulsion prepared in the step 3), adding 12 parts of aqueous polyurethane dispersion and the residual 0.1 part of triethanolamine, and stirring for 8 minutes at the rotating speed of 750 revolutions per minute; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
Example 5
The high-adhesion water-based primer for the cat eye laser paper comprises the following raw materials in parts by weight: 28 parts of water-based styrene acrylic emulsion, 20 parts of water-based polyurethane dispersoid, 4 parts of water-based acrylic solid resin, 1.6 parts of propylene glycol methyl ether, 1.6 parts of OT-75 base material wetting agent, 0.2 part of BYK019 polyether modified organic silicon solution defoaming agent, 0.6 part of monoethanolamine, 3 parts of wax slurry, 24 parts of water and 15.5 parts of n-propanol.
The preparation method comprises the following specific steps:
1) preparation of aqueous acrylic acid solution: weighing 4 parts of aqueous acrylic acid solid resin according to parts by weight, mixing with 7 parts of n-propanol, 0.5 part of monoethanolamine and 6.5 parts of water, dispersing at a high speed until solid particles are completely dissolved, and filtering by using a 200-mesh gauze to prepare 18 parts of aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: taking 3.2 parts of the aqueous acrylic acid solution prepared in the step 1), adding 3 parts of wax slurry, 0.5 part of n-propanol and 0.4 part of water, dispersing to the fineness of less than 5 mu m, and filtering by a 300-mesh sieve to obtain anti-scratching auxiliary agent slurry;
3) preparation of water-based priming emulsion: adding the rest of 17.1 parts of water, 8 parts of n-propanol, 28 parts of aqueous acrylic emulsion, 1.6 parts of propylene glycol methyl ether and 1.4 parts of OT-75 base material wetting agent, stirring at the speed of 1000 revolutions per minute for 22 minutes, and slowly adding 0.2 part of BYK019 defoaming agent when stirring is started until no shrinkage cavity exists;
4) uniformly mixing the residual aqueous acrylic acid solution in the step 1), the anti-scratching auxiliary agent slurry prepared in the step 2) and the water-based base coating emulsion prepared in the step 3), adding 20 parts of aqueous polyurethane dispersion and the residual 0.1 part of monoethanolamine, and stirring for 8 minutes at the rotating speed of 750 revolutions per minute; and filtering and packaging with 300-mesh gauze to obtain the high-adhesion water-based primer for the cat eye laser paper.
The prepared cat eye laser paper high-adhesion water-based primer is coated on an aluminized transfer paper material, and is blown to be completely dried by a blowing cylinder, and the performances of the five high-adhesion water-based primers are inspected.
The results of the performance tests are shown in Table 1.
The performance detection method comprises the following steps:
viscosity: the method is carried out according to the regulation of chapter 3 in GB/T13217.4-2008;
and (3) fastness to adhesion: testing according to the regulation of chapter 2 in GB/T13217.7-2009;
solid content: testing according to the national standard GB/T1725-2007;
wear resistance: testing according to the specification of 4.8 in GB/T26461-2011;
heat resistance: the test was carried out as specified in 4.7 of GB/T26461-2011.
The reprintability was verified on the press and the flexibility was verified after press molding in the printing plant.
TABLE 1 test results for waterborne base coat on aluminum transfer paper
From the content in table 1, it can be seen that the high-adhesion water-based primer for cat eye laser paper has good adhesion, friction resistance and heat resistance which meet the requirements of national recommended standards.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Claims (10)
1. The high-adhesion water-based primer for the cat eye laser paper is characterized by being prepared from the following raw materials in parts by mass: 25-35 parts of water-based acrylic emulsion, 12-24 parts of water-based polyurethane dispersion, 3-8 parts of water-based acrylic solid resin, 1-2 parts of film-forming additive, 1-2 parts of wetting agent, 0.2-0.3 part of defoaming agent, 0.5-1 part of pH value regulator, 3-8 parts of anti-scratching wax slurry, 20-30 parts of water and 12-18 parts of cosolvent.
2. The high-adhesion water-based primer for cat eye laser paper according to claim 1, wherein the water-based acrylic emulsion is water-based styrene acrylic emulsion or modified acrylic emulsion; the glass transition temperature of the water-based acrylic solid resin is 50-90 ℃.
3. The high-adhesion water-based primer for cat eye laser paper according to claim 1 or 2, wherein the pH regulator is 2-amino-2-methyl-1-propanol, monoethanolamine or triethanolamine, and the anti-scratch wax slurry is D-816 anti-scratch wax slurry.
4. The high-adhesion water-based primer for cat eye laser paper according to claim 3, wherein the film-forming assistant is propylene glycol methyl ether or dipropylene glycol methyl ether; the wetting agent is an anionic surfactant.
5. The high-adhesion water-based primer for the cat eye laser paper according to claim 1 or 4, wherein the defoaming agent is BYK019 polyether modified organic silicon solution; the cosolvent is ethanol, isopropanol or n-propanol.
6. The preparation method of the high-adhesion water-based primer for the cat eye laser paper, as claimed in any one of claims 1 to 5, is characterized by comprising the following steps:
1) preparation of aqueous acrylic acid solution: mixing the aqueous acrylic acid solid resin with part of cosolvent, pH regulator and water, and filtering to obtain an aqueous acrylic acid solution;
2) preparing anti-scratching additive slurry: mixing the anti-scratching wax slurry with part of aqueous acrylic acid solution, part of cosolvent and part of water, and filtering to obtain anti-scratching auxiliary agent slurry;
3) preparation of water-based priming emulsion: mixing the water-based acrylic emulsion, the film-forming assistant, the wetting agent and the defoaming agent with the rest of water and the rest of cosolvent, and stirring until no shrinkage cavity exists;
4) and mixing the rest aqueous acrylic acid solution with the anti-scratching auxiliary agent slurry and the aqueous base coat emulsion, adding the aqueous polyurethane dispersion and the rest pH regulator, stirring, and filtering to obtain the high-adhesion aqueous base coat for the cat eye laser paper.
7. The preparation method of the high-adhesion water-based primer for the cat eye laser paper, according to claim 6, is characterized in that the pH regulator added in the step 1) accounts for 80-89% of the total amount of the pH regulator.
8. The preparation method of the high-adhesion water-based primer for the cat eye laser paper according to claim 6 or 7, wherein the ratio of the cosolvents added in the steps 1), 2) and 3) is 3.6-7.5: 0.4-0.5: 8-11.45 in sequence.
9. The preparation method of the high-adhesion water-based primer for the cat eye laser paper, according to claim 8, is characterized in that the amount of the added water-based acrylic acid solution in the step 2) is 17-28% of the total amount of the water-based acrylic acid solution prepared in the step 1).
10. The preparation method of the high-adhesion water-based primer for the cat eye laser paper according to claim 6 or 9, wherein the ratio of the water added in the steps 1), 2) and 3) is 6.5-11.3: 0.3-0.45: 11.2-18.25 in sequence.
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| JP2010150309A (en) * | 2008-12-24 | 2010-07-08 | Asahi Lite Optical Co Ltd | Water-based primer composition, and plastic article using the same |
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