UV wide-color-gamut printing ink CMYK and preparation method thereof

Abstract

The embodiment of the invention discloses UV wide-color-gamut ink CMYK and a preparation method thereof. The UV wide-color-gamut printing ink CMYK is prepared from the following components in parts by weight: 35 to 45 parts of pigment, 20 to 60 parts of monomer, 10 to 28 parts of resin, 3 to 12 parts of photoinitiator, 1 to 4 parts of co-initiator and 2 to 8 parts of filler. The actually measured color gamut of the CMYK wide-color-gamut printing ink reaches 90% Adobe sRGB, and the CMYK wide-color-gamut printing ink is matched with high-covering white ink (L * is larger than or equal to 94), so that the high-saturation and non-transparent industrial-grade wide-color-gamut printing effect is achieved on a PET / PP / silver card.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of printing material technology, and specifically to a UV wide color gamut CMYK ink and a preparation method thereof. Background Art

[0002] The traditional CMYK ink color gamut covers less than 80% of Adobe sRGB and cannot meet the high-color visual requirements. Especially on transparent substrates such as PET and PP, the ink adhesion is insufficient and the underlying color is easy to show through, resulting in insufficient color concentration.

[0003] Existing technologies mostly use a fixed four-color printing process, and lack systematic research on wide color gamut four colors + extended spot colors (OGV), making it difficult to improve color levels and saturation.

[0004] Existing technologies attempt to improve the effect by adding spot color inks or optimizing the substrate coating, which affects the light transmittance of the transparent substrate. No scientific ink transfer evaluation standards have been established, and there is a lack of UV white ink with high whiteness (L*≥94) and high hiding power (≥98%) as a base color support, resulting in limited color expression.

[0005] In view of this, this application is hereby filed. Summary of the Invention

[0006] To this end, an embodiment of the present invention provides a UV wide color gamut ink CMYK and a preparation method thereof to solve the problems of narrow color gamut, poor adhesion, and insufficient covering power of traditional inks on special substrates, thereby realizing the industrial production of high-fidelity, high-color printing and strong adaptability to surface processing.

[0007] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0008] According to a first aspect of an embodiment of the present invention, the present invention provides a UV wide color gamut ink CMYK, which includes, by weight: 35-45 parts of pigment, 20-60 parts of monomer, 10-28 parts of resin, 3-12 parts of photoinitiator, 1-4 parts of co-initiator, and 2-8 parts of filler.

[0009] In some preferred embodiments, the pigment is selected from at least one of luminous blue, scarlet, purple 23#, pink 81#, golden red 48:1, golden red 53:1, green 7#, pigment red 57:1, pigment yellow 13#, phthalocyanine blue, carbon black, and calcium carbonate.

[0010] In some preferred embodiments, the monomers include propoxylated glycerol triacrylate and ditrimethylolpropane tetraacrylate.

[0011] In some preferred embodiments, the UV wide color gamut ink CMYK further includes ethoxylated trimethylolpropane triacrylate and / or dipentaerythritol pentahexaacrylate.

[0012] In some preferred embodiments, the resin is a modified polyester acrylic resin.

[0013] In some preferred embodiments, the photoinitiator is selected from at least one of photoinitiator DETX, photoinitiator 379, and photoinitiator 184.

[0014] In some preferred embodiments, the co-initiator is tetraethyl Michler's ketone.

[0015] In some preferred embodiments, the filler includes magnesium carbonate and solid paraffin.

[0016] In some preferred embodiments, the composition comprises, by weight: 35-45 parts of pigment, 10-30 parts of propoxylated glycerol triacrylate, 10-30 parts of ditrimethylolpropane tetraacrylate, 0-30 parts of ethoxylated trimethylolpropane triacrylate, 0-30 parts of dipentaerythritol pentahexaacrylate, 10-28 parts of modified polyester acrylic resin, 1-4 parts of photoinitiator DETX, 1-4 parts of photoinitiator 379, 1-4 parts of photoinitiator 184, 1-4 parts of tetraethyl Michler's ketone, 1-4 parts of magnesium carbonate, and 1-4 parts of solid paraffin.

[0017] According to a second aspect of an embodiment of the present invention, the present invention provides a method for preparing the UV wide color gamut CMYK ink as described above, the method comprising the following steps:

[0018] S1: Weigh the pigment, resin, monomer, photoinitiator and co-initiator according to the formula, put them into a high-speed disperser, and pre-disperse them at 800-1200 rpm for 15-20 minutes to obtain a pre-dispersed slurry;

[0019] S2 transfers the pre-dispersed slurry into a sand mill and grinds it to a particle size D90 ≤ 200 nm;

[0020] S3 adds filler, vacuum degassing and filtering to obtain the UV wide color gamut ink CMYK.

[0021] The embodiments of the present invention have the following advantages:

[0022] The CMYK ink of the present invention has a measured color gamut of 90% Adobe sRGB, and is matched with high-hiding white ink (≥98%) and whiteness (L*≥94), achieving a highly saturated, non-see-through industrial-grade printing effect on PET / PP / silver card. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0024] Figure 1 The C / M / Y / R / G / B solid color values ​​provided by the present invention. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0026] Photoinitiator DETX: CAS No. 82799-44-8;

[0027] Photoinitiator 379: CAS No. 119344-86-4;

[0028] Photoinitiator 184: CAS No. 947-19-3;

[0029] Tetraethyl Michler's ketone: CAS No. 90-93-7;

[0030] Magnesium carbonate: CAS No. 546-93-0;

[0031] Solid paraffin PE WAX: CAS No. 9002-88-4;

[0032] Radiant blue (purple / blue): CAS No. 6358-30-1 / 147-14-8;

[0033] Scarlet (red / golden red): CAS No. 5281-04-9 / 7585-41-3;

[0034] Purple 23#: CAS No. 6358-30-1;

[0035] Peach Red 81#: CAS No.85959-61-1;

[0036] Golden Red 48:1: CAS No.7585-41-3;

[0037] Golden Red 53:1: CAS No.5160-02-1;

[0038] Green 7#: CAS No.1328-53-6;

[0039] Pigment Red 57:1: CAS No. 5281-04-9;

[0040] Pigment Yellow 13#: CAS No. 5102-83-0;

[0041] Phthalocyanine blue 15:3 (copper compound): CAS No. 147-14-8;

[0042] Carbon black: CAS No. 1333-86-4;

[0043] Calcium carbonate: CAS No. 471-34-1;

[0044] Ethoxylated trimethylolpropane triacrylate: CAS No. 28961-43-5;

[0045] Dipentaerythritol pentahexaacrylate: CAS No. 29570-58-9;

[0046] Propoxylated glyceryl triacrylate: CAS No. 94108-97-1;

[0047] Ditrimethylolpropane tetraacrylate: CAS No. 52408-84-1;

[0048] Modified polyester acrylic resin: CAS No.8050-31-5.

[0049] Example 1

[0050] This embodiment provides a UV wide color gamut ink CMYK, the raw materials of which are:

[0051] Photoinitiator: photoinitiator DETX 2 parts, photoinitiator 3793 parts, photoinitiator 1841 parts;

[0052] Co-initiator: 3 parts of tetraethyl Michler's ketone;

[0053] Filler: 2 parts of magnesium carbonate, 3 parts of solid paraffin PE WAX;

[0054] Pigment: 40 parts of radiant blue (purple);

[0055] Monomer: 15 parts of propoxylated glycerol triacrylate, 25 parts of ditrimethylolpropane tetraacrylate;

[0056] Resin: 25 parts of modified polyester acrylic resin.

[0057] The preparation method of the above-mentioned UV wide color gamut ink CMYK includes:

[0058] S1: Weigh the pigment, resin, monomer, photoinitiator and co-initiator according to the formula, put them into a high-speed disperser, and pre-disperse them at 800-1200 rpm for 15-20 minutes to obtain a pre-dispersed slurry;

[0059] S2 transfers the pre-dispersed slurry into a sand mill and grinds it to a particle size D90 ≤ 200 nm;

[0060] S3 adds filler, vacuum degassing and filtering to obtain the UV wide color gamut ink CMYK.

[0061] Example 2

[0062] This embodiment provides a UV wide color gamut ink CMYK, the raw materials of which are:

[0063] Photoinitiator: 3 parts of photoinitiator DETX, 3791 parts of photoinitiator, 1844 parts of photoinitiator;

[0064] Co-initiator: 1 part of tetraethyl Michler's ketone;

[0065] Filler: 4 parts of magnesium carbonate, 2 parts of solid paraffin PE WAX;

[0066] Pigment: 38 parts of radiant blue (purple);

[0067] Monomers: 10 parts of ethoxylated trimethylolpropane triacrylate, 10 parts of dipentaerythritol pentahexaacrylate, 10 parts of propoxylated glycerol triacrylate, and 10 parts of ditrimethylolpropane tetraacrylate;

[0068] Resin: 25 parts of modified polyester acrylic resin.

[0069] The preparation method of the above-mentioned UV wide color gamut ink CMYK is the same as that in Example 1.

[0070] Example 3

[0071] This embodiment provides a UV wide color gamut ink CMYK, the raw materials of which are:

[0072] Photoinitiator: photoinitiator DETX 4 parts, photoinitiator 3791 parts, photoinitiator 1841 parts;

[0073] Co-initiator: 2 parts of tetraethyl Michler's ketone;

[0074] Filler: 3 parts of magnesium carbonate, 2 parts of solid paraffin PE WAX;

[0075] Pigment: Pigment Yellow 13# 38 parts;

[0076] Monomer: 10-30 parts of propoxylated glycerol triacrylate, 10-30 parts of ditrimethylolpropane tetraacrylate;

[0077] Resin: 20 parts of modified polyester acrylic resin.

[0078] The preparation method of the above-mentioned UV wide color gamut ink CMYK is the same as that in Example 1.

[0079] Example 4

[0080] This embodiment provides a UV wide color gamut ink CMYK, the raw materials of which are:

[0081] Photoinitiator: 1 part of photoinitiator DETX, 3794 parts of photoinitiator, 1842 parts of photoinitiator;

[0082] Co-initiator: 4 parts of tetraethyl Michler's ketone;

[0083] Filler: 2 parts of magnesium carbonate, 3 parts of solid paraffin PE WAX;

[0084] Pigment: 35 parts of carbon black;

[0085] Monomers: 5 parts of dipentaerythritol pentahexaacrylate, 20 parts of propoxylated glycerol triacrylate, and 15 parts of ditrimethylolpropane tetraacrylate;

[0086] Resin: 25 parts of modified polyester acrylic resin.

[0087] The preparation method of the above-mentioned UV wide color gamut ink CMYK is the same as that in Example 1.

[0088] After testing, the CMYK wide color gamut ink provided by Examples 1-4 of the present invention has a measured color gamut of 90% AdobesRGB, and is matched with high-coverage white ink (≥98%) and whiteness (L*≥94), achieving highly saturated, non-transparent industrial-grade printing effects on PET / PP / silver card.

[0089] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A UV wide color gamut ink CMYK, characterized in that: The composition comprises, by weight: 35-45 parts of pigment, 20-60 parts of monomer, 10-28 parts of resin, 3-12 parts of photoinitiator, 1-4 parts of co-initiator and 2-8 parts of filler.

2. The UV wide color gamut ink CMYK according to claim 1, characterized in that: The pigment is selected from at least one of luminous blue, scarlet, purple 23#, pink 81#, golden red 48:1, golden red 53:1, green 7#, pigment red 57:1, pigment yellow 13#, phthalocyanine blue, carbon black, and calcium carbonate.

3. The UV wide color gamut ink CMYK according to claim 1, characterized in that: The monomers include propoxylated glycerol triacrylate and ditrimethylolpropane tetraacrylate.

4. The UV wide color gamut ink CMYK according to claim 1, characterized in that: The UV ink CMYK system further comprises ethoxylated trimethylolpropane triacrylate and / or dipentaerythritol pentahexaacrylate.

5. The UV wide color gamut ink CMYK according to claim 1, characterized in that: The resin is a modified polyester acrylic resin.

6. The UV wide color gamut CMYK ink according to claim 1, characterized in that: The photoinitiator is selected from at least one of photoinitiator DETX, photoinitiator 379, and photoinitiator 184.

7. The UV wide color gamut ink CMYK according to claim 1, characterized in that: The co-initiator is tetraethyl Michler's ketone.

8. The UV wide color gamut ink CMYK according to claim 1, characterized in that: The filler includes magnesium carbonate and solid paraffin.

9. The UV wide color gamut CMYK ink according to any one of claims 1 to 8, characterized in that: The invention comprises, by weight, 35-45 parts of pigment, 10-30 parts of propoxylated glycerol triacrylate, 10-30 parts of ditrimethylolpropane tetraacrylate, 0-30 parts of ethoxylated trimethylolpropane triacrylate, 0-30 parts of dipentaerythritol pentahexaacrylate, 10-28 parts of modified polyester acrylic resin, 1-4 parts of photoinitiator DETX, 1-4 parts of photoinitiator 379, 1-4 parts of photoinitiator 184, 1-4 parts of tetraethyl Michler's ketone, 1-4 parts of magnesium carbonate, and 1-4 parts of solid paraffin.

10. The method for preparing UV wide color gamut CMYK ink according to claim 1, characterized in that: The method comprises the following steps: S1: Weigh the pigment, resin, monomer, photoinitiator and co-initiator according to the formula, put them into a high-speed disperser, and pre-disperse them at 800-1200 rpm for 15-20 minutes to obtain a pre-dispersed slurry; S2 transfers the pre-dispersed slurry into a sand mill and grinds it to a particle size D90 ≤ 200 nm; S3 adds filler, vacuum degassing and filtering to obtain the UV wide color gamut ink CMYK.

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