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Low migration electronic beam curable primer

An electron beam, oligomer technology, applied in chlorine free, electron beam curable compositions, compositions applied by offset printing, low migration, primers applied by offset printing, low migration lithographic electron beam curable primers In the field of paint, it can solve the problems of difficult to achieve adhesion of electron beam curable inks to flexible packaging substrates

Active Publication Date: 2021-11-26
SUN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Adhesion of e-beam curable inks to flexible packaging substrates such as plastic foils is often difficult to achieve, especially on corona-treated PET films

Method used

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  • Low migration electronic beam curable primer
  • Low migration electronic beam curable primer
  • Low migration electronic beam curable primer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] Embodiment 1: Primer of the present invention

[0126] The primer was prepared by stirring the components at room temperature for 30 minutes. Subsequently, the primer mixture was dispersed twice on three roll mills @ 10 bar / 30°C.

[0127] components weight% Ketone-resin (inert resin) 21.00 Acrylated Epoxy Fatty Acid Oil (Acrylated Oil) 15.35 Aliphatic polyurethane (acrylated oligomer) 26.00 Glycerin trihydroxypropyl ether triacrylate (monomer) 27.00 leveling agent 0.65 Inorganic filler 5.00 anti-fogging agent 3.00 tank stabilizer 2.00 total 100 Viscosity η[23℃, @2s-1, Pas] 56.64 Viscosity η[23℃, @50s-1, Pas] 43.46 Viscosity 150 [unit] 375 Liquidity [cm] 9.5 Grinding degree (0 / 0)

[0128] The primer of Example 1 was applied with a surface tension of 40 dynes / cm and a film weight of 1.5 g / m by means of an offset printing calibrator model C-05 from the company IGT ...

Embodiment 2

[0133] Embodiment 2: use the laminated material prepared by embodiment 1 of the present invention

[0134] On top of the cured print provided in Example 1, at 2.3 g / m 2 A coat weight of 100 Å, an adhesive layer (Sunlam NS2100A / HA450, a trademark of Sun Chemical Corporation) was applied. The prints were then laminated with a sheet of cast polypropylene foil with a thickness of 65 μm using laboratory rubber laminator rolls (5 kg weight) and placed in a hot press at a pressure of 4 bar and a temperature of 40 °C. Cured for 40 hours.

[0135] Laminate bond strength test - result: 2.1N / 15mm (average)

[0136] Example 2 demonstrates that lamination bond strengths greater than 2N / 15mm can be achieved on corona treated PET film Polyplex TPC101 using the primer of the present invention in combination with Sunbeam Advance e-beam ink, lamination adhesive and sealing film. Without a primer, the laminate bond strength is usually less than 2N / 15mm and often less than 1N / 15mm.

Embodiment 3

[0137] Example 3: Primer of the invention comprising white pigment

[0138] The primer was prepared by mixing the components with a three-blade mixer for 30 minutes at room temperature. Subsequently, the primer mixture was dispersed twice on three roll mills @ 10 bar / 30°C.

[0139]

[0140]

[0141] Example 3 shows an example of a primer that additionally includes the white pigment titanium dioxide. White primer can be used as preprint white for laminate printing. This provides the advantage that no additional primer printing station is required, as the primer of Example 3 is actually a pre-printed white with primer properties.

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Abstract

A chlorine-free, low migration, electron-beam curable composition which is a primer or first-down white ink. Preferably, applied by offset printing, the composition provides good adhesion of electron-beam curable offset inks to substrates, especially plastics. Moreover, the present invention is directed to a chlorine-free, low migration lithographic electron-beam curable primer providing good ink adhesion to corona-treated PET films for flexible packaging.

Description

[0001] The present invention relates to a chlorine-free, low-migration, electron-beam (EB) curable composition having particular utility as a primer, especially a primer applied by offset printing. The primer provides good adhesion of electron beam curable inks to substrates, especially plastic substrates. In particular, the present invention relates to a chlorine-free, low-migration lithographic electron beam curable primer that provides good ink adhesion to corona-treated PET films for flexible packaging. The present invention also relates to a low migration, electron beam (EB) curable composition suitable for use as a printing ink, in particular a so-called "print-on-white ink", especially a composition applied by offset printing. Background technique [0002] For energy-curable inks and coatings used in sensitive packaging applications, such as food packaging and pharmaceutical packaging, e-beam drying (i.e., curing) is particularly advantageous because the higher double b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/101
CPCC09D11/101B32B7/12B32B27/08B32B27/20B32B27/36B32B2310/0887B32B2310/14B32B2367/00B41M1/06B41M7/0081C09D11/037C09D11/104C09D11/00
Inventor 约尔格·亚当斯凯乌维·高尔
Owner SUN CHEM CORP