Ultrahigh-blackness blue-phase black gravure ink and preparation method thereof
A technology of gravure ink and blackness, which is applied in the field of blue-phase black gravure ink and its preparation. It can solve the problems of limited use of drying temperature, poor alcohol resistance, easy to produce bright marks, etc., and achieve excellent adhesion and scratch resistance. Good results
Pending Publication Date: 2022-03-11
SUZHOU BETELY POLYMER MATERIALS CO LTD
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Problems solved by technology
[0006] ① Generally, the gravure black ink of polyurethane system has poor hue and poor blackness, mostly red and yellow phase, and when the gloss is lower, the coating is whiter (that is, the L value rises), and the gloss is usually not lower than 1.5Gs ;
[0007] ②The gravure black ink of polyurethane system has poor scratch resistance due to the poor scratch resistance of the resin itself. When the gloss of the prepared black ink is very low, it is easy to produce bright marks due to the poor scratch resistance of the surface, and can directly affect the cutting surface of the coating The luster makes the luster rise sharply;
[0008] ③ Generally, single polyester and polyurethane system gravure black inks have good flexibility of resin molecules. After coating on thinner PET (6μm), the coating is soft and the stiffness of the film is poor, which is not good for subsequent use and installation. ;
[0009] ④ Generally, gravure black ink of polyurethane system has excellent substrate adhesion, but its alcohol resistance is usually poor. It can usually be used as a primer when used, but it is difficult to achieve various chemical resistance properties as a top coat;
[0010] ⑤General acrylic system gravure black ink usually has no excellent adhesion on PET materials, and the trimming position will burst and fall off when the subsequent film material is trimmed;
[0011] ⑥ Ordinary epoxy resin systems need to add amine curing agents, and the reaction temperature is relatively high, generally above 170°C. The high drying temperature limits the use of this system on PET materials;
[0012] ⑦ Some hydroxyl-modified epoxy resins can react with isocyanate curing agents and cure at lower temperatures (about 130°C) or at room temperature, but it is also difficult to achieve excellent adhesion on PET / PI materials
Method used
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Embodiment 1
[0045] A blue phase black gravure ink with ultra-high blackness, which comprises the following components by weight:
[0046]
[0047]
[0048] The preparation method of the blue phase black gravure ink of described ultra-high blackness comprises the steps:
[0049] S1. Mix the saturated polyester resin with high Tg point and the saturated polyester resin with low Tg point, stir and disperse evenly, and obtain a uniform transparent fluid;
[0050] S2, add dispersing agent in step S1, disperse for 10 minutes with the speed of 800rpm;
[0051] S3. After step S2 is completed, add conductive carbon black and magnesium aluminum silicate filler, and disperse at a speed of 800 rpm for 30 minutes, and stop stirring and dispersing when the temperature of the ink to be stirred rises to 60-70°C;
[0052] S4. In step S3, pour an appropriate amount of main solvent and co-solvent, and disperse at a speed of 1000rpm for 10 minutes, then grind to reach the required fineness and filter ...
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Abstract
The invention belongs to the field of printing ink, and particularly relates to blue-phase black gravure printing ink with ultrahigh blackness and a preparation method of the blue-phase black gravure printing ink. The blue-phase black gravure ink with ultrahigh blackness comprises the following components in parts by weight: saturated polyester resin with high Tg point; low Tg point saturated polyester resin; a dispersant; conductive carbon black; a magnesium aluminum silicate filler; a main solvent; a cosolvent; an adhesion promoter; a leveling agent; the Tg value of the saturated polyester resin with the high Tg point is 47 to 70 DEG C; the Tg value of the low-Tg-point saturated polyester resin is 10 to 20 DEG C. The ink provided by the invention has the advantages of high covering property, alcohol resistance, fingerprint resistance and excellent scratch resistance.
Description
technical field [0001] The invention belongs to the field of printing inks, and in particular relates to a blue phase black gravure printing ink with super high blackness and a preparation method thereof. Background technique [0002] At present, the products using gravure coating on the market are mostly 3C electronics industry (such as mobile phone battery packaging, mobile phone shielding film, computer shielding film, electronic label, electronic tape, etc.), automotive field (tire high temperature label, car clothing protective film, etc.), Furniture (anti-scratch protective film, etc.). The above are the main application areas of the gravure coating industry, and most of them have completed all localization, and the quality after localization is very high, but for some high-end industries, they basically rely on imports, and the localization process is still quite slow. For example, the optical film used in the lens industry, especially the use of black light-shieldin...
Claims
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IPC IPC(8): C09D11/104C09D11/03
CPCC09D11/104C09D11/03
Inventor缪云飞鲁斌汪小峰徐宏欧阳旭频
OwnerSUZHOU BETELY POLYMER MATERIALS CO LTD