Water-based light-skin-feeling varnish and preparation method thereof

Abstract

The invention relates to the technical field of water-based paint, in particular to water-based light-skin-feeling varnish and a preparation method thereof. The water-based light-skin-feeling varnish is prepared from the following raw materials in parts by weight: 70 to 80 parts of functional emulsion, 5 to 8 parts of functional additive and 10 to 15 parts of water, wherein the functional emulsion comprises water-based skin-feeling emulsion and / or water-based polyurethane emulsion. A coating film of the novel water-based light-skin-feeling varnish product is not prone to being scratched, the laminating effect of the coating film is good, the skin feeling effect is good, and the stain resistance is high.

Description

Technical Field

[0001] The invention relates to the technical field of water-based coatings, and in particular to a water-based light skin-feel clear topcoat and a preparation method thereof. Background Art

[0002] Recently, water-based two-component skin-feel products are very popular. After running for a period of time, some problems have gradually been exposed, such as the coating of skin-feel paint is soft and easy to scratch; the skin-feel paint film is relatively soft, and there are indentations when stacked, which affects the packaging speed; products with good skin-feel effects are often easy to get dirty and difficult to clean. These problems affect the use of furniture, especially the countertops. Therefore, a new skin-feel product that has a skin-feel effect but does not affect the use of furniture is needed. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a water-based light skin-feel clear topcoat and a preparation method thereof.

[0004] In the first aspect, the water-based light skin-feel clear topcoat provided by the present invention comprises the following raw materials in parts by weight: 70-80 parts of functional emulsion, 5-10 parts of functional additives and 10-15 parts of water, wherein the functional emulsion comprises water-based skin-feel emulsion and / or water-based polyurethane emulsion. The present invention provides a novel skin-feel product that has both skin-feel effect and does not affect the use of furniture, the coating film of the skin-feel paint is not easy to be scratched, the coating film has good lamination effect, good skin-feel effect and strong stain resistance.

[0005] Preferably, in the functional emulsion, the mass ratio of the aqueous skin feel emulsion to the aqueous polyurethane emulsion is 0:80 to 80:0, preferably 20:60 to 60:20.

[0006] More preferably, the mass ratio of the aqueous skin feel emulsion to the aqueous polyurethane emulsion is 20-30:50-60, preferably 20:60.

[0007] More preferably, the solid content of the aqueous polyurethane emulsion is 36% to 40%, and the viscosity is ≤500 mPa·s. The present invention preferably uses Zhanchen 7601.

[0008] Further preferably, the water-based skin-feel emulsion is a water-based two-component skin-feel emulsion, in which component A is a water-based skin-feel paint, component B is a water-based isocyanate curing agent, and the mass ratio of component A to component B is 100:10. In the embodiment of the present invention, the water-based skin-feel emulsion can be from Honeycomb / Angao / Bingxin, and Honeycomb 1103 is preferably used.

[0009] Preferably, the functional additive is selected from one or more of a thickener, a wetting agent, a defoamer, a feel agent, a film-forming aid, a matting material, a leveling agent, a wax emulsion and an anti-sagging agent.

[0010] More preferably, the water-based light skin-feel clear topcoat comprises the following raw materials in parts by weight: Water-based skin-feel lotion 0~80 parts Waterborne polyurethane emulsion 0~80 parts Thickener 0.5~2 parts Wetting agent 0.2~1 part Defoaming agent 0.5~1 part 0.3~0.5 parts of hand feeling agent Film-forming agent 2~5 parts Matting material 0.2~1 part Leveling agent 0.5~1 part 2~5 parts wax emulsion 2~5 parts of anti-sagging agent 5~10 parts water

[0011] In the present invention, the types and sources of additives are not limited, and commonly used additives in the field can be selected. For example, the thickener used in the embodiments of the present invention is from Hemmings / Mingling, the wetting agent is from Digo / Bick, the defoamer is from Digo / Bick, the hand feeling agent is from Digo / Dow Corning, the film-forming agent is from Dow / Tianyin, the matting material is from Grace / Evonik, the leveling agent is from Digo / Bick, the wax emulsion is from Bick / Longhai, and the anti-sagging agent is from Bick / Hemmings.

[0012] In a second aspect, the preparation method of the water-based light skin-feel clear topcoat provided by the present invention comprises mixing a functional emulsion, a functional additive and water to obtain a water-based light skin-feel clear topcoat.

[0013] Preferably, the method comprises: mixing an aqueous skin-feel emulsion and an aqueous polyurethane emulsion to obtain a functional emulsion, adding a portion of a thickener to the functional emulsion, and then adding a defoamer, a wetting agent, a hand-feeling agent, and a matting material, stirring, adding a leveling agent, a wax emulsion, an anti-sagging agent, and water, and then adding the remaining thickener.

[0014] The water-based light skin-feel clear topcoat provided by the present invention has both skin-feel effect and does not affect the use of furniture. The coating film of the skin-feel paint is not easy to be scratched, the paint film has good lamination effect, good skin-feel effect, and strong stain resistance. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are 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.

[0016] In the present invention, the term "polymer" includes the term "copolymer", and unless otherwise specified, the term "copolymer" means a polymer prepared from any two or more different monomers, such as a terpolymer, a pentapolymer, etc., as well as a homopolymer that is functionalized after polymerization so that two or more different functional groups are present in the product copolymer.

[0017] In the following examples, the raw materials used are all known commercially available products.

[0018] In the embodiment of the present invention, the aqueous skin-feel emulsion is Honeycomb 1103, the aqueous polyurethane emulsion (solid content of 36%~40%, viscosity ≤500 mPa·s) is Zhanchen 7601, the thickener is Hemmings 299, the wetting agent is BYK 346, the defoaming agent is Digo 810, the hand feeling agent is Dow Corning 211S, the leveling agent is BYK 450, the wax emulsion is BYK 519, the anti-sagging agent is BYK RDS, the matting material is Grace 7000, and the film-forming agent is Dow DPNB / DPM.

[0019] Example 1 The raw material composition of water-based light skin clear topcoat: Water-based skin lotion 80kg Waterborne polyurethane emulsion 0kg Thickener 0.2kg Wetting agent 0.5kg Defoamer 0.3kg Hand feel agent 0.3kg Film-forming agent 4kg Matting material 0kg Leveling agent 0.5kg Wax emulsion 3kg Anti-sagging agent 2kg 9.2kg of water.

[0020] Preparation method: Stir the functional emulsion components evenly at a low speed, add a portion of the thickener to adjust the viscosity to 50-60 seconds (Iwata 2# cup), add the defoamer, wetting agent, and feel agent in turn, and then add the matting material, stir at high speed until there are no oil pits and the fineness reaches less than 30 microns, add the leveling agent, wax emulsion, anti-sagging agent and the remaining water, and use the remaining thickener to adjust to the required viscosity.

[0021] Coating method: The water-based light skin-feel clear topcoat prepared above was applied to the workpiece by spraying, with a coating amount of 120 g / ㎡, and then placed in a drying room for drying. The drying room temperature was 25°C and the relative humidity was 50%. The performance of the paint film was tested. The test methods and standards are shown in Table 1, and the test results are shown in Table 2.

[0022] Example 2 The raw material composition of water-based light skin clear topcoat: Water-based skin lotion 60kg Water-based polyurethane emulsion 20kg Thickener 0.2kg Wetting agent 0.5kg Defoamer 0.3kg Hand feel agent 0.3kg Film-forming agent 4kg Matting material 0.4kg Leveling agent 0.5kg Wax emulsion 3kg Anti-sagging agent 2kg Water 8.8kg.

[0023] Preparation method: Same as Example 1.

[0024] Coating method: same as Example 1.

[0025] The paint film was tested for performance. The test methods and standards are shown in Table 1, and the test results are shown in Table 2.

[0026] Example 3 The raw material composition of water-based light skin clear topcoat: Water-based skin lotion 40kg Waterborne polyurethane emulsion 40kg Thickener 0.2kg Wetting agent 0.5kg Defoamer 0.3kg Hand feel agent 0.3kg Film-forming agent 4kg Matting material 1kg Leveling agent 0.5kg Wax emulsion 3kg Anti-sagging agent 2kg 8.2kg of water.

[0027] Preparation method: Same as Example 1.

[0028] Coating method: same as Example 1.

[0029] The paint film was tested for performance. The test methods and standards are shown in Table 1, and the test results are shown in Table 2.

[0030] Example 4 The raw material composition of water-based light skin clear topcoat: Water-based skin lotion 20kg Waterborne polyurethane emulsion 60kg Thickener 0.2kg Wetting agent 0.5kg Defoamer 0.3kg Hand feel agent 0.3kg Film-forming agent 4kg Matting material 2.2kg Leveling agent 0.5kg Wax emulsion 3kg Anti-sagging agent 2kg 7kg of water.

[0031] Preparation method: Same as Example 1.

[0032] Coating method: same as Example 1.

[0033] The paint film was tested for performance. The test methods and standards are shown in Table 1, and the test results are shown in Table 2.

[0034] Example 5 The raw material composition of water-based light skin clear topcoat: Water-based skin lotion 0kg Waterborne polyurethane emulsion 80kg Thickener 0.2kg Wetting agent 0.5kg Defoamer 0.3kg Hand feel agent 0.3kg Film-forming agent 4kg Matting material 3.2kg Leveling agent 0.5kg Wax emulsion 3kg Anti-sagging agent 2kg Water 6kg Preparation method: Same as Example 1.

[0035] Coating method: same as Example 1.

[0036] The paint film was tested for performance. The test methods and standards are shown in Table 1, and the test results are shown in Table 2.

[0037] Table 1 Detection indicators and methods

[0038] Table 2 Test results

[0039] As the amount of water-based polyurethane emulsion increases, the skin-feel effect decreases and the smooth effect increases. When the water-based skin-feel emulsion accounts for 20% of the total formula, there is a slight skin-feel effect in the smoothness. The hardness and scratch resistance are not affected, and the speed of furniture packing is not affected. As can be seen from the resistance to vinegar and green tea, the pollution resistance is not affected. Therefore, when the water-based skin-feel emulsion accounts for 20% of the total formula, there is a slight skin-feel effect and various properties are not affected.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water-based light skin-feel clear topcoat, characterized in that: The invention comprises the following raw materials in parts by weight: 70-80 parts of a functional emulsion, 5-10 parts of a functional auxiliary agent and 10-15 parts of water, wherein the functional emulsion comprises an aqueous skin-feeling emulsion and / or an aqueous polyurethane emulsion.

2. The water-based light skin-feel clear topcoat according to claim 1, characterized in that: In the functional emulsion, the mass ratio of the aqueous skin feel emulsion to the aqueous polyurethane emulsion is 0:80 to 80:0, preferably 20:60 to 60:

20.

3. The water-based light skin-feel clear topcoat according to claim 2, characterized in that: The mass ratio of the aqueous skin feel emulsion to the aqueous polyurethane emulsion is 20-30:50-60, preferably 20:

60.

4. The water-based light skin-feel clear topcoat according to claim 3, characterized in that: In the water-based light skin-feel clear topcoat, the amount of the water-based skin-feel emulsion is 15-25wt%, preferably 20wt%.

5. The water-based light skin-feel clear topcoat according to any one of claims 1 to 4, characterized in that: The waterborne polyurethane emulsion has a solid content of 36% to 40% and a viscosity of ≤500 mPa·s.

6. The water-based light skin-feel clear topcoat according to claim 5, characterized in that: The aqueous skin-feel emulsion is an aqueous two-component skin-feel emulsion.

7. The water-based light skin-feel clear topcoat according to claim 6, characterized in that: The functional additive is selected from one or more of a thickener, a wetting agent, a defoamer, a feel agent, a film-forming aid, a matting material, a leveling agent, a wax emulsion and an anti-sagging aid.

8. The water-based light skin-feel clear topcoat according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: Water-based skin-feel lotion 0~80 parts Waterborne polyurethane emulsion 0~80 parts Thickener 0.5~2 parts Wetting agent 0.2~1 part Defoaming agent 0.5~1 part 0.3~0.5 parts of hand feeling agent Film-forming agent 2~5 parts Matting material 0.2~1 part Leveling agent 0.5~1 part 2~5 parts wax emulsion 2~5 parts of anti-sagging agent 5~10 parts water 9. The method for preparing the water-based light skin-feel clear topcoat according to any one of claims 1 to 8, characterized in that: The method comprises mixing a functional emulsion, a functional auxiliary agent and water to obtain a water-based light skin-feel clear topcoat.

10. The method for preparing the water-based light skin-feel clear topcoat according to claim 9, characterized in that: include: A water-based skin-feel emulsion and a water-based polyurethane emulsion are mixed to obtain a functional emulsion, part of the thickener is added to the functional emulsion, and then a defoamer, a wetting agent, a hand-feeling agent, and a matting material are added, and after stirring, a leveling agent, a wax emulsion, an anti-sagging agent and water are added, and the remaining thickener is added.

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