Color-variable printing ink and preparation method thereof
A technology of color-changing ink and cholesteryl oleyl carbonate, which can be used in inks, household utensils, applications, etc., and can solve the problem that the effect is not as good as that of pigments
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Embodiment 1
[0014] Dissolve 60 parts of cholesteryl nonanoate, 30 parts of cholesteryl oleyl carbonate, and 10 parts of cholesteryl benzoate in chloroform, add ethyl cellulose as the inner wall material, and use gelatin and gum arabic as the outer wall coating Materials, the liquid crystal composition is microencapsulated by the coagulation method, and the obtained slurry is filtered, centrifuged, and dried to obtain the microcapsule slurry;
[0015] Add 50 parts of microcapsule slurry to 40 parts of acrylate emulsion with a solid content of 40%, then add 0.8 parts of C8 aliphatic polyoxyethylene ether and 3 parts of microcrystalline wax, mix and stir for 30 minutes with a stirrer, and then add 0.25 304 parts of emulsified silicone oil, 5 parts of isopropanol, and 1 part of polyacrylamide, stirred slowly for 10 minutes, and after standing still, the product was obtained.
Embodiment 2
[0017] Dissolve 60 parts of cholesteryl nonanoate, 30 parts of cholesteryl oleyl carbonate, and 10 parts of cholesteryl benzoate in chloroform, add ethyl cellulose as the inner wall material, and use gelatin and gum arabic as the outer wall coating Materials, the liquid crystal composition is microencapsulated by the coagulation method, and the obtained slurry is filtered, centrifuged, and dried to obtain the microcapsule slurry;
[0018] Add 50 parts of microcapsule slurry to 40 parts of acrylate emulsion with a solid content of 40%, then add 0.8 parts of C8 aliphatic polyoxyethylene ether and 3 parts of microcrystalline wax, mix and stir for 35 minutes with a stirrer, and then add 0.25 304 parts of emulsified silicone oil, 5 parts of isopropanol, and 1 part of polyacrylamide, stirred slowly for 15 minutes, and after standing still, the product was obtained.
Embodiment 3
[0020] Dissolve 60 parts of cholesteryl nonanoate, 30 parts of cholesteryl oleyl carbonate, and 10 parts of cholesteryl benzoate in chloroform, add ethyl cellulose as the inner wall material, and use gelatin and gum arabic as the outer wall coating Materials, the liquid crystal composition is microencapsulated by the coagulation method, and the obtained slurry is filtered, centrifuged, and dried to obtain the microcapsule slurry;
[0021] Add 50 parts of microcapsule slurry to 40 parts of acrylate emulsion with a solid content of 40%, then add 0.8 parts of C8 aliphatic polyoxyethylene ether and 3 parts of microcrystalline wax, mix and stir for 40 minutes with a stirrer, and then add 0.25 304 parts of emulsified silicone oil, 5 parts of isopropanol, 1 part of polyacrylamide, stirred slowly for 20 minutes, and after standing still, the product was obtained.
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