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Water-based heat transfer printing release coating, and preparation method and application thereof

A heat-transfer, water-based technology, applied in polyester coatings, polyamide coatings, epoxy resin coatings, etc., can solve the problems of easy whitening of coatings, construction adaptability, performance, and environmental protection. Solve the problems of molded coatings and poor appearance of finished products, achieve good heat resistance and high gloss, safe and environmentally friendly preparation process, and better surface decoration effect

Inactive Publication Date: 2015-03-11
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, it is difficult for the coatings on the market to meet the requirements of thermal transfer release coatings in terms of construction adaptability, performance, and environmental protection.
[0007] Patent CN 103045063 A discloses a temperature-resistant transfer coating, which contains oleoresin, ethyl acetate and other substances, and has high heat resistance and solvent resistance. However, due to the use of a large amount of ester solvents in this invention, the The environment and operators cause great physical harm, and at the same time, it is easy to cause production accidents, which does not conform to the general trend of future environmental protection coating development
[0008] Patent CN 101760121 A discloses a high-temperature-resistant and environmentally-friendly water-based transfer coating, which contains modified acrylic resin and alcohol solvents, and has the advantages of high-temperature resistance and environmental protection. However, the invention has poor scratch resistance and is not effective for inks. If it has a good protective effect, the appearance of the finished product is easily scratched, and the aesthetic effect is easily damaged. At the same time, the peeling property is poor, and the release is prone to unclear phenomenon during the hot stamping transfer process, so it cannot be used for thermal transfer release coatings superior
[0009] Patent CN101407654 discloses a high-stripping environment-friendly water-based transfer coating, which contains water-based resins, alcohol solvents and other substances, and has the advantages of high-stripping and environmental protection. However, the invention has poor heat resistance and is easy to coat under high temperature stamping. Whitening, loss of gloss, poor appearance of the finished product, and the color of the ink is prone to distortion. It is not suitable for thermal transfer release coatings

Method used

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  • Water-based heat transfer printing release coating, and preparation method and application thereof
  • Water-based heat transfer printing release coating, and preparation method and application thereof
  • Water-based heat transfer printing release coating, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A water-based thermal transfer release coating, comprising the following components by mass percentage:

[0063]

[0064] The total amount of the above components is 100%.

[0065] The preparation process of the coating is as follows:

[0066] (1) In the reaction kettle, mix the film-forming aid (5.5kg ethanol, 3kg isopropanol, 4kg butanol, 2.5kg propylene glycol methyl ether) evenly, stir at 400r / min for 15min, add 0.1kg leveling agent BYK333 (German BYK chemical, silicone modified polyether leveling agent), 0.2kg wetting agent Tego-245 (Germany Tego, polyether siloxane copolymer), 0.6kg 9184 (Slok Chemical, high molecular weight polysiloxane emulsion), stirred at 600r / min for 10min to dissolve, then added deionized water and dispersed into a uniform liquid phase to obtain dispersion system 1.

[0067] (2) Select solid styrene-maleic anhydride resin SMA 1000 (Sartomer, styrene-maleic anhydride copolymer) and water-based acrylic emulsion Craymul 8405 (Crayville, F...

Embodiment 2

[0073] A water-based thermal transfer release coating, comprising the following components by mass percentage:

[0074]

[0075] The total amount of the above components is 100%.

[0076] Polyurethane resin is composed of the following components by mass percentage

[0077]

[0078]

[0079] The preparation process of the polyurethane resin is as follows: In the reaction kettle, the polybutylene adipate and toluene diisocyanate after vacuum dehydration are mixed evenly, and the temperature is raised to 80 ° C for 1 hour, and then dihydroxymethyl propionic acid is added, and 85 ℃ for 2 hours, add a few drops of aliphatic amine catalyst, acetone appropriate amount of 60 ℃ for 4 hours, cool down to 25 ℃ and discharge, neutralize the prepolymer with triethylamine, add deionized water for high-speed emulsification, reduce The water-based polyurethane resin is obtained after pressure distillation to remove the solvent, and the solid content of the resin is about 35%.

[0...

Embodiment 3

[0087] A water-based thermal transfer release coating, comprising the following components by mass percentage:

[0088]

[0089] The total amount of the above components is 100%.

[0090] Polyurethane resin is composed of the following components by mass percentage

[0091]

[0092] The preparation process of polyurethane resin is as follows: In the reaction kettle, put dehydrated polybutylene adipate and sodium ethylenediaminoethanesulfonate, slowly raise the temperature to 100°C, keep the temperature for 1 hour to completely dissolve, and then slowly cool down When the temperature is about 60°C, add isophorone diisocyanate and organotin catalysts, an appropriate amount of methyl ethyl ketone, and slowly raise the temperature to 80-90°C for 3-4 hours at a constant temperature. Add an appropriate amount of methyl ethyl ketone according to the system year, neutralize with triethanolamine and then add deionized water for high-speed dispersion and emulsification. After vac...

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Abstract

The invention belongs to the technical field of preparation of release coatings and discloses a water-based heat transfer printing release coating, and a preparation method and application thereof. The water-based heat transfer printing release coating comprises the following ingredients by mass percent: 40-60 percent of water-based resin, 8-15 percent of a coalescing agent, 0.3-2 percent of a scratch-resistant anti-wear agent, 0.05-0.2 percent of a foam killer, 0.2-0.6 percent of other additives and the balance of water, wherein the water-based resin is at least one of polyurethane resin, polyacrylic acid resin, polycarbonate, polymide resin, polyethersulfone resin, epoxy resin, thermoplastic polyester resin, a styrene-maleic anhydride copolymer and phenolic resin. According to the invention, application of the water-based formula to preparation of the water-based heat transfer printing release coating is realized, the material prescription is environment-friendly, and the preparation process is safe and environment-friendly. Compared with a conventional solvent product, the water-based heat transfer printing release coating is better in heat resistance, high in glossiness and better in printing ink adhesion, effectively enhances the printing ink protecting function and can be kept colorful in a long term.

Description

technical field [0001] The invention belongs to the technical field of release coating preparation, and in particular relates to a water-based thermal transfer release coating and a preparation method and application thereof. Background technique [0002] The thermal transfer printing process mainly uses polyester film (PET) of 12-25 μm as the printing carrier, first coats the release layer on the PET film, then prints various patterns on the release layer, and then coats the transfer glue on the pattern , transfer the printed pattern to the substrate through instantaneous high-temperature extrusion. Substrates mainly involve various plastic objects, metal utensils, wood, etc. Thermal transfer printing is more and more widely used in surface decoration, ranging from architectural decoration materials to small stationery gifts. It is an ideal printing method and is often used to make personalized patterns on the surface of objects. The thermal transfer process has many adva...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D133/00C09D169/00C09D177/00C09D181/06C09D163/00C09D167/00C09D135/06C09D161/06C09D7/12B41M5/44
CPCC09D135/06B41M5/44C08K2201/014C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2207/062C09D7/65C09D133/00C09D175/06C08L33/00C08L71/00C08L83/12C08L83/04C08K5/00C08L23/06C08L81/06C08L91/00C08K13/02
Inventor 陈兴耀黄艳轶卢耀柏陈森
Owner GUANGZHOU HUMAN CHEM
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