Nano photoetching environment-friendly coating and preparation method thereof

Abstract

The invention discloses a nanometer photoetching environment-friendly coating and a preparation method thereof, and belongs to the technical field of coatings. The coating comprises a component A and a component B. The component A comprises the following components in parts by weight: 45-60 parts of water-borne epoxy resin, 4-8 parts of a water-borne adhesion promoter, 1-5 parts of a flexibilizer, 0.5-2 parts of a light stabilizer, 0.2-0.6 part of a water-borne dispersant, 0.1-0.7 part of a defoaming agent, 5-10 parts of a cosolvent and 20-40 parts of water. The water-based adhesive force accelerant is a composition of an Addive LF-914 water-based adhesive force accelerant and an adhesive force accelerant DZ-5452; and the component B comprises the following components in parts by weight: 1-2 parts of a water-based curing agent and 10-20 parts of water. According to the coating disclosed by the invention, the laser lettering film has excellent adhesive force and folding resistance and is more suitable for being used as a packaging material.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and more specifically, to a nano-photolithography environmentally friendly coating and a preparation method thereof. Background Art

[0002] Laser engraving film, as the name implies, is a film that can be engraved with a laser. This material is usually based on plastic film or paper. After a layer of coating is applied on the surface of the substrate, it can be "engraved" by the laser, thereby forming various texts, patterns and images, which play a decorative and anti-counterfeiting role. However, the laser engraving film made with conventional coatings has the problem of less than ideal adhesion between the coating and the substrate, especially after being placed in a high temperature and high humidity environment for a period of time, the adhesion of the laser engraving film decreases significantly. In addition, the solvents used in the coatings used for laser engraving films on the market are mostly ketone compounds, which have a strong pungent odor and toxicity. At the same time, the residual volatile organic compounds (VOCs) will also pose a potential threat to consumers, which does not meet the development requirements of green environmental protection. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a nano-photolithography environmentally friendly coating and a preparation method thereof, wherein the coating can make the laser lettering film have excellent adhesion and folding resistance, and is more suitable for use as a packaging material.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A nano-photolithography environmentally friendly coating comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1:1, the component A comprises the following components in parts by weight: 45-60 parts of a water-based epoxy resin, 4-8 parts of a water-based adhesion promoter, 1-5 parts of a toughening agent, 0.5-2 parts of a light stabilizer, 0.2-0.6 parts of a water-based dispersant, 0.1-0.7 parts of a defoaming agent, 5-10 parts of a cosolvent and 20-40 parts of water, wherein the water-based adhesion promoter is a composition of Additive LF-914 water-based adhesion promoter and adhesion promoter DZ-5452; the component B comprises the following components in parts by weight: 1-2 parts of a water-based curing agent and 10-20 parts of water.

[0006] The present invention is further configured such that the mass ratio of the Additive LF-914 water-based adhesion promoter to the adhesion promoter DZ-5452 is 1:1-3.

[0007] The present invention is further configured such that the aqueous dispersant is one of HP2460 aqueous dispersant, sodium polyacrylate, and sodium oleate.

[0008] The present invention is further configured such that the toughening agent is one of dibutyl phthalate, dioctyl phthalate, and VOK-CTB 162 toughening agent.

[0009] The present invention is further configured such that the light stabilizer is one of BASF TINUVIN 329, light stabilizer HS-3101, and light stabilizer 3853.

[0010] The present invention is further configured such that the water-based curing agent is one of G2001 water-based curing agent, epoxy resin modified triethylenetetramine, and Huntsman AD3986.

[0011] The present invention is further configured such that the defoamer is one of defoamer BYK-1710 and defoamer BYK-1719.

[0012] The present invention is further configured such that the co-solvent is one or more of ethanol, isopropanol, and propylene glycol ether.

[0013] The present invention is further configured to include component A and component B, the mass ratio of component A to component B is 1:1, component A includes the following components in parts by weight: 55 parts of waterborne epoxy resin, 6.4 parts of waterborne adhesion promoter, 3.5 parts of VOK-CTB 162 toughening agent, 0.7 parts of light stabilizer, 0.5 parts of HP2460 waterborne dispersant, 0.3 parts of defoamer, 8 parts of cosolvent and 30 parts of water, wherein the waterborne adhesion promoter is a composition of Additive LF-914 waterborne adhesion promoter and adhesion promoter DZ-5452; component B includes the following components in parts by weight: 1.3 parts of G2001 waterborne curing agent and 15 parts of water.

[0014] A method for preparing a nano-photolithography environmentally friendly coating comprises the steps of: mixing a water-based epoxy resin, a water-based adhesion promoter, a toughening agent, a light stabilizer, a water-based dispersant, a defoaming agent, a cosolvent and water uniformly to obtain a component A; and mixing a water-based curing agent and water uniformly to obtain a component B.

[0015] In summary, the present invention has the following beneficial effects:

[0016] The present invention obtains a nano-photolithography coating with high adhesion, folding resistance and environmental protection (the VOCs of the obtained film in the embodiment are all less than 0.5ppm) by adding components such as a water-based adhesion promoter, a toughening agent, a water-based dispersant, and a water-based curing agent and reasonably compounding the components. At the same time, Additive LF-914 water-based adhesion promoter is compounded with adhesion promoter DZ-5452, VOK-CTB 162 toughening agent, HP2460 water-based dispersant, and G2001 water-based curing agent, which can significantly improve the folding resistance and high temperature and humidity resistance of the coating. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The nano-photolithography environmentally friendly coating of the present invention comprises component A and component B, wherein the mass ratio of component A to component B is 1:1, component A comprises the following components in parts by weight: 45-60 parts of water-based epoxy resin, 4-8 parts of water-based adhesion promoter, 1-5 parts of toughening agent, 0.5-2 parts of light stabilizer, 0.2-0.6 parts of water-based dispersant, 0.1-0.7 parts of defoaming agent, 5-10 parts of cosolvent and 20-40 parts of water, wherein the water-based adhesion promoter is a composition of Additive LF-914 water-based adhesion promoter (purchased from Shanghai Yushi Industrial Co., Ltd.) and adhesion promoter DZ-5452 (purchased from Chengdu Dezhirun Technology Co., Ltd.), and the mass ratio of Additive LF-914 water-based adhesion promoter to adhesion promoter DZ-5452 is preferably 1:1-3; component B comprises the following components in parts by weight: 1-2 parts of water-based curing agent and 10-20 parts of water.

[0019] The preparation method of the nano-photolithography environmentally friendly coating comprises the following steps: uniformly mixing water-based epoxy resin, water-based adhesion promoter, toughening agent, light stabilizer, water-based dispersant, defoamer, cosolvent and water to obtain component A; and uniformly mixing water-based curing agent and water to obtain component B.

[0020] In component A, the toughening agent is one of dibutyl phthalate, dioctyl phthalate, and VOK-CTB 162 toughening agent (a product of Walker Specialty Chemical Company); the light stabilizer is one of BASF TINUVIN 329, light stabilizer HS-3101, and light stabilizer 3853; the aqueous dispersant is one of HP2460 aqueous dispersant (purchased from Anshan Huihong New Materials Chemical Co., Ltd.), polyacrylic acid sodium salt, and sodium oleate; the defoamer is one of defoamer BYK-1710 and defoamer BYK-1719; and the cosolvent is one or more of ethanol, isopropanol, and propylene glycol ether.

[0021] In component B, the water-based curing agent is one of G2001 water-based curing agent (purchased from Qingyuan Kelinda New Materials Co., Ltd.), epoxy resin modified triethylenetetramine, and Huntsman AD3986.

[0022] Example 1

[0023] 55 parts by mass of waterborne epoxy resin, 6.4 parts by mass of waterborne adhesion promoter (the mass ratio of Additive LF-914 waterborne adhesion promoter to adhesion promoter DZ-5452 is 1:2), 3.5 parts by mass of VOK-CTB 162 toughening agent, 0.7 parts by mass of light stabilizer BASF TINUVIN 329, 0.5 parts by mass of HP2460 waterborne dispersant, 0.3 parts by mass of defoamer BYK-1710, 8 parts by mass of ethanol and 30 parts by mass of water are stirred and mixed uniformly to obtain component A; 1.3 parts by mass of G2001 waterborne curing agent and 15 parts by mass of water are mixed uniformly to obtain component B.

[0024] Comparative Example 1

[0025] The only difference between this comparative example and Example 1 is that the mass of Additive LF-914 water-based adhesion promoter is replaced by adhesion promoter DZ-5452, and the other components remain unchanged.

[0026] Comparative Example 2

[0027] The only difference between this comparative example and Example 1 is that the adhesion promoter DZ-5452 is replaced by Additive LF-914 water-based adhesion promoter, and the other components remain unchanged.

[0028] Example 2

[0029] The only difference between this embodiment and embodiment 1 is that the VOK-CTB 162 toughening agent is replaced by dibutyl phthalate, and the other components remain unchanged.

[0030] Example 3

[0031] The only difference between this embodiment and embodiment 1 is that the mass of HP2460 aqueous dispersant is replaced by sodium oleate, and the other components remain unchanged.

[0032] Example 4

[0033] The only difference between this embodiment and embodiment 1 is that the G2001 water-based curing agent is replaced by Huntsman AD3986, and the other components remain unchanged.

[0034] Comparative Example 3

[0035] The only difference between this comparative example and Example 1 is that no VOK-CTB 162 toughening agent is added.

[0036] Comparative Example 4

[0037] The only difference between this comparative example and Example 1 is that no HP2460 aqueous dispersant is added.

[0038] Comparative Example 5

[0039] The only difference between this comparative example and Example 1 is that Additive LF-914 water-based adhesion promoter and adhesion promoter DZ-5452 are not added.

[0040] Comparative Example 6

[0041] The only difference between this comparative example and Example 1 is that G2001 water-based curing agent is not added.

[0042] The nano-photolithography environmentally friendly coatings of Examples 1 to 4 and Comparative Examples 1 to 6 were used to manufacture laser lettering films (the substrate was a PET film). It was found that the film-forming effect of the coating of Comparative Example 6 was very poor, while the film-forming effects of the coatings of the other examples and comparative examples were better. The performance of each coating of Examples 1 to 4 and Comparative Examples 1 to 5 was tested, and the results are shown in Table 1. It can be seen from the data in the table that the coating of the present invention has good adhesion and folding resistance, can withstand high temperature and high humidity environments, and is more suitable for use in the packaging field. At the same time, the addition of Additive LF-914 water-based adhesion promoter and adhesion promoter DZ-5452, VOK-CTB 162 toughening agent, HP2460 water-based dispersant, and G2001 water-based curing agent can significantly improve the folding resistance and high temperature and high humidity resistance of the coating.

[0043] Table 1

[0044]

[0045] The storage stability of the coating components A of Examples 1 to 4 and Comparative Examples 1 to 5 was also tested. It was found that after being placed at -10°C for 25 days, only the coating component A of Example 1 showed no stratification or sedimentation.

[0046] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A nano-lithography environmentally friendly coating, characterized in that: The invention comprises component A and component B, wherein the mass ratio of component A to component B is 1:1, component A comprises the following components in parts by weight: 45-60 parts of waterborne epoxy resin, 4-8 parts of waterborne adhesion promoter, 1-5 parts of toughening agent, 0.5-2 parts of light stabilizer, 0.2-0.6 parts of waterborne dispersant, 0.1-0.7 parts of defoaming agent, 5-10 parts of cosolvent and 20-40 parts of water, wherein the waterborne adhesion promoter is a composition of Additive LF-914 waterborne adhesion promoter and adhesion promoter DZ-5452; component B comprises the following components in parts by weight: 1-2 parts of waterborne curing agent and 10-20 parts of water.

2. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The mass ratio of the Additive LF-914 water-based adhesion promoter to the adhesion promoter DZ-5452 is 1:1-3.

3. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The aqueous dispersant is one of HP2460 aqueous dispersant, polyacrylic acid sodium salt, and sodium oleate.

4. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The toughening agent is one of dibutyl phthalate, dioctyl phthalate and VOK-CTB 162 toughening agent.

5. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The light stabilizer is one of BASF TINUVIN 329, light stabilizer HS-3101, and light stabilizer 3853.

6. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The water-based curing agent is one of G2001 water-based curing agent, epoxy resin modified triethylenetetramine, and Huntsman AD3986.

7. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The defoamer is one of defoamer BYK-1710 and defoamer BYK-1719.

8. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The co-solvent is one or more of ethanol, isopropanol and propylene glycol ether.

9. The nano-lithography environmentally friendly coating according to claim 1, characterized in that: The invention comprises component A and component B, wherein the mass ratio of component A to component B is 1:1, component A comprises the following components in parts by weight: 55 parts of waterborne epoxy resin, 6.4 parts of waterborne adhesion promoter, 3.5 parts of VOK-CTB 162 toughening agent, 0.7 parts of light stabilizer, 0.5 parts of HP2460 waterborne dispersant, 0.3 parts of defoamer, 8 parts of cosolvent and 30 parts of water, wherein the waterborne adhesion promoter is a composition of Additive LF-914 waterborne adhesion promoter and adhesion promoter DZ-5452; component B comprises the following components in parts by weight: 1.3 parts of G2001 waterborne curing agent and 15 parts of water.

10. A method for preparing the nanolithography environmentally friendly coating according to any one of claims 1 to 9, characterized in that: The water-based epoxy resin, water-based adhesion promoter, toughening agent, light stabilizer, water-based dispersant, defoaming agent, cosolvent and water are stirred and mixed uniformly to obtain component A; the water-based curing agent and water are mixed uniformly to obtain component B.

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