Environment-friendly, strong acid-resistant, strong base-resistant and steaming-resistant ink and preparation method
A technology of cooking ink and acid and alkali resistance, which is applied in the field of printing ink, can solve the problems of solvent-based ink pollution and other problems, achieve the effect of bright color of ink layer, improve water resistance, and enhance comprehensive performance
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Example Embodiment
[0034] [Example 1] 0.4 parts of dispersant was added to 8.5 parts (by weight, the same below) isopropanol, the dispersant was a non-ionic dispersant, the active ingredient was 95% (weight), and the pH was 6.0-8.0, It has good water resistance and does not contain alkylphenol ethoxylates, solvents and halides, such as HLD-12 dispersant (commercially available). After magnetic stirring, add 75.5 parts of water-based polyurethane emulsion, which is yellow-resistant It becomes aliphatic, solid content is 10~30% (weight), emulsion particle size distribution is 10~500nm, pH is 7~9.5, glass transition temperature≤-35℃, thermal deformation temperature≥170℃, such as waterborne polyurethane emulsion 600WF (Commercially available), after the magnetic stirring is uniform, add the above system to the sand mill container, and stir with the sand mill at a low speed of 600 rpm. Weigh 8 parts of phthalocyanine blue NCF (commercially available) and 8 parts of nano-alumina. The crystal form of na...
Example Embodiment
[0035] [Example 2] Add 0.4 parts of dispersant to 10.5 parts of isopropanol, after magnetic stirring, add 76.5 parts of water-based polyurethane emulsion, after magnetic stirring, add the above system into the sand mill container, 600 rpm low speed sand Grind and stir. Weigh 8 parts of phthalocyanine blue NCF and 5 parts of nano alumina, respectively, and add them to the sanding container. Then, 120 parts of zirconia beads with a diameter of 0.8 mm were added, the rotation speed was increased to 2000 revolutions per minute, and the dispersion was sanded for 60 minutes. 5 minutes before the completion of sanding dispersion, add 0.3 parts of defoamer, and take out the ink system after the dispersion is completed. Add 4% (weight) of the aziridine crosslinking agent in the ink system and stir evenly before printing on plastic surfaces such as PET.
Example Embodiment
[0036] [Example 3] Add 0.4 parts of dispersant to 12.5 parts of isopropanol, and after magnetic stirring, add 69.5 parts of water-based polyurethane emulsion, after magnetic stirring, add the above system to the sand mill container, 600 rpm low speed sand Grind and stir. Weigh 8 parts of phthalocyanine blue NCF and 10 parts of nano alumina, respectively, and add them to the sand mill container. Then, 120 parts of zirconia beads with a diameter of 0.8 mm were added, the rotation speed was increased to 2000 revolutions per minute, and the dispersion was sanded for 60 minutes. 2 minutes before the completion of sanding dispersion, add 0.3 part of defoamer, and take out the ink system after the dispersion is completed. Add 5% (weight) of the isocyanate crosslinking agent in the ink system, such as isophorone diisocyanate (commercially available), and stir it evenly, then you can print on PET and other plastic surfaces.
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