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A kind of PU water-based repair paint and preparation method thereof
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A refinishing, water-based technology, applied in the field of paint and coating, can solve the problems of no adhesion, poor adhesion, slow drying speed, etc., and achieve the effect of good leveling and excellent adhesion
Active Publication Date: 2021-11-16
SHANGHAI CHANGRUNFA PAINT
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Problems solved by technology
[0004] However, when using the transitional primer composition in the above application documents for repairing, a small amount of paint will be sprayed on the unpolished places near the furniture. These places have no adhesion and are easy to turn yellow, so they are not suitable for medium and high-end furniture; The paint film is very thin, the water-based paint repair can not form a good film, and the drying speed is slow, the adhesion is not good in the non-grinding place, and the overall adhesion is poor. Therefore, a new solution needs to be proposed to solve the above problems
Method used
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Embodiment 1
[0050] Embodiment 1: A kind of PU water-based refinishing paint, comprises the A component and the B component that are preserved separately and used when being mixed in the ratio of 10:1 by weight and number, each component and corresponding weight parts thereof are as Shown in Table 1, and obtain through the following steps preparation:
[0051] Step 1, the raw materials are premixed, and 20% vinyl acetate resin solution, 25% CAB liquid, fatty acid resin, Defom5300F defoamer, EFKA-4010 dispersant, butyl acetate and propylene glycol methyl ether acetate of corresponding parts by weight are added to In the dispersing tank, start the dispersing machine and stir at 600r / min for 7.5 minutes to obtain the premix;
[0052] 1045 leveling agent, xylene and ethyl acetate, stirred and dispersed at 600r / min for 11min to obtain component A, filled with nitrogen and vacuum filled, stored for later use; ADD step 2, prepare slurry, add in the above premix in sequence The corresponding part...
Embodiment 2-9
[0055] Example 2-9: A PU water-based repair paint, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.
[0056] Each component and parts by weight thereof in table 1 embodiment 1-9
[0057]
[0058]
Embodiment 10
[0059] Embodiment 10: A kind of PU water-based refinishing paint, comprises the A component and the B component that the ratio of parts by weight is 9:1 to be mixed when preserving separately and using, and the difference of embodiment 1 is, by Prepared by the following steps:
[0060] Step 1, the raw materials are premixed, and 20% vinyl acetate resin solution, 25% CAB liquid, fatty acid resin, Defom5300F defoamer, EFKA-4010 dispersant, butyl acetate and propylene glycol methyl ether acetate of corresponding parts by weight are added to In the dispersing tank, start the dispersing machine and stir at 700r / min for 5 minutes to obtain the premix;
[0061] 1045 leveling agent, xylene and ethyl acetate, stirred and dispersed at 700r / min for 10min to obtain component A, filled with nitrogen and vacuum filled, and stored for later use; ADD step 2, prepare slurry, add in the above premix in sequence The corresponding parts by weight of BYK-310 leveling agent, HANSA
[0062] Step 3...
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Abstract
The invention discloses a PU water-based repair paint and a preparation method thereof, and relates to the technical field of paints and coatings. It comprises component A which is stored separately and mixed at a weight ratio of (9-11):1 and Component B, in parts by weight, the composition of said A component includes the following raw materials: 10-30 parts of 20% vinyl acetate resin solution; 10-30 parts of 25% CAB liquid; 1-4 parts of fatty acid resin; defoamer 0.1‑0.5 parts; dispersant 0.3‑0.6 parts; butyl acetate 30‑40 parts; propylene glycol methyl ether acetate 3‑7 parts; leveling agent 0.2‑0.4 parts; xylene 6‑10 parts; ethyl acetate 5‑ 30 parts; the composition of the B component includes the following raw materials: 15-20 parts of HDI trimer; 30-40 parts of OK.DS curing agent; 44-55 parts of butyl acetate; 0.3-0.5 parts of dehydrating agent. The PU water-based repair paint in the present invention can be used directly without polishing when repairing scratched, rubbed or damaged small areas of furniture, and has good leveling properties, and the formed paint film has excellent adhesion.
Description
technical field [0001] The invention relates to the technical field of paints and coatings, more specifically, it relates to a PU water-based repair paint and a preparation method thereof. Background technique [0002] More and more domestic furniture companies are inclined to water-based coatings and UV coatings with low VOCs content. Water-based coatings are widely used in many hotels, high-end suite furniture, children's furniture, etc. During the production of these furniture, there is inevitably a small amount of surface Particles are inevitably bumped during the handling process. When consumers use furniture, they are also very easy to scratch, rub, touch and other small parts are damaged, and repairs are needed at this time. [0003] A transitional primer composition is disclosed in the Chinese invention patent application document whose publication number is CN110240835A, which includes: vinyl chloride resin and solvent, and the total weight of the transitional prime...
Claims
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Application Information
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