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Printing ink composite and preparation method thereof and stainless steel workpiece

An ink composition and resin technology, applied in ink, household appliances, applications, etc., can solve the problems of fast volatilization of pad printing ink, poor adhesion between paint film and substrate, high curing temperature, and achieve wear resistance and resistance. Excellent solvent properties, high adhesion and moderate volatilization rate

Inactive Publication Date: 2013-08-21
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problems in the prior art that the volatilization speed of the pad printing ink is too fast, the adhesion between the paint film and the substrate is poor, and the curing temperature is high

Method used

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Examples

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Effect test

preparation example Construction

[0028] The preparation method of the ink composition of the present invention comprises mixing and grinding the mixture containing main resin, cross-linking resin, pigment, acid catalyst and organic solvent with or without auxiliary agent; the main resin is epoxy Modified polyester resin, hydroxyl acrylic resin and epoxy resin are mixed resins with a mass ratio of 1:1.2-1.5:0.25-0.3, and the cross-linked resin is amino resin;

[0029] The hydroxyl value of the epoxy-modified polyester resin in the main resin is 20-60mgKOH / g, and the molecular weight is 2000-7000; the hydroxyl value of the hydroxyl acrylic resin is 70-80mgKOH / g; the molecular weight of the epoxy resin 1000-2000.

[0030] Preferably, the epoxy-modified polyester resin, hydroxyacrylate resin, and epoxy resin can be mixed evenly in proportion, and then amino resin, pigment, and additives can be selectively added, fully mixed evenly, and ground to a fineness of 10 μm, then add an acid catalyst and an organic solve...

Embodiment 1

[0035] This embodiment is used to illustrate the ink composition of the present invention, its preparation method and stainless steel workpiece.

[0036] (1) Mix epoxy-modified polyester resin, hydroxyacrylate resin, and epoxy resin in proportion, then add amino resin, pigment, and selectively add additives, mix well, grind to a fineness of 10 μm, and then After adding an acid catalyst and an organic solvent and stirring evenly, the ink composition of this embodiment is obtained; the components and their contents in the ink composition are as follows:

[0037] Epoxy modified polyester resin: SH5460 (hydroxyl value 60mgKOH / g, molecular weight 5000) 24wt%

[0038] Hydroxy acrylic resin: SC-341 (hydroxyl value 80mgKOH / g) 30wt%

[0039] Epoxy resin: 1001 (molecular weight 1000) 6wt%

[0040] Amino resin: US-138 20wt%

[0041] Pigment: carbon black 6wt%

[0042] Defoamer: BYK054 0.5wt%

[0043] Leveling agent: DEGO410 0.5wt%

[0044] Thixotropic agent: gas phase SiO 2 and be...

Embodiment 2

[0050] The ink composition was prepared by the same method as in Example 1, and the stainless steel substrate was pad printed and solidified. The difference was that the components and contents of the ink composition were as follows:

[0051] Epoxy modified polyester resin: HA4807 (hydroxyl value 50mgKOH / g, molecular weight 3000) 28wt%

[0052] Hydroxy acrylic resin: A909 (hydroxyl value 70mgKOH / g) 34wt%

[0053] Epoxy resin: 1002 (molecular weight 1100) 7wt%

[0054] Amino resin: 582-2 15wt%

[0055] Pigment: pearl powder 3wt%

[0056] Thixotropic agent: gas phase SiO 2 and bentonite (mass ratio 1:1) 0.5wt%

[0057] Dispersant: BYK163 0.5wt%

[0058] Acid catalyst: CAT0450 2wt%

[0059] Organic solvent: Fluorone, cyclohexanone and isobutanol (volume ratio 1:0.2:0.2) 10wt%

[0060] Through the above steps, a stainless steel workpiece sample A2 with an ink pattern layer thickness of 20 μm was obtained.

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Abstract

The invention provides a printing ink composite comprising main resin, crosslinking resin, a pigment, an acid catalyst and an organic solvent and comprises or not comprises an assistant, wherein the main resin is a mixed resin formed by epoxy modified polyester resin, hydroxylated acrylic resin and epoxy resin in weight ratio of 1:1.2-1.5:0.25-0.3; the crosslinking resin is amino resin; the hydroxyl value of the epoxy modified polyester resin in the main resin is 20-60mgKOH / g, and the molecular weight is 2000-7000; the hydroxyl value of the hydroxylated acrylic resin is 70-80mgKOH / g; and the molecular weight of the epoxy resin is 1000-2000. The invention also provides a preparation method of the printing ink composite and a stainless steel workpiece using the printing ink composite. The volatilizing speed of the printing ink composite is suitable for a transfer printing process, and a solidified printing oil pattern layer has a very high adhesive force with a stainless steel base material; the temperature of solidification of the printing oil composite is 70-90 DEG C, and the printing oil pattern layer formed at the temperature of solidification has excellent abrasive resistance and solvent resistance.

Description

technical field [0001] The invention belongs to the field of ink, and in particular relates to an ink composition, a preparation method thereof and a stainless steel workpiece using the ink composition. Background technique [0002] Pad printing refers to the process of using a rubber head to print an ink-filled pattern from a steel plate to an object through mechanical transmission. Pad printing inks are divided into one-component inks and two-component inks. The two-component ink is formed by adding a curing agent and then curing on the surface of the substrate to form an ink pattern layer; while the one-component ink does not need to add a curing agent. [0003] Due to the low surface energy of the stainless steel surface and the dense surface of the substrate, general inks cannot produce good adhesion on the surface through chemical penetration or physical adsorption. Therefore, the printing inks on the surface of stainless steel are generally two-component inks. Howev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/10C09D11/104C09D11/107
Inventor 张璐璐林宏业
Owner BYD CO LTD
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