CN102391721A - UV (ultraviolet) cured inkjet ink composition - Google Patents

Abstract

The invention discloses a UV (ultraviolet) cured inkjet ink composition. The composition comprises the following components by mass: 1.0-6.0% of nano pigments (D90<200nm), 2-3% of UV blocking agents (D90<200nm), 1.0-6.0% of a dispersing agent, 5-15% of prepolymer, 3-6% of initiators, 0.5-1.0% of a wetting agent and the balance of active monomers. The ink composition can be widely applied to LED (light emitting diode) light sources and high-precision printers and has excellent weather resistance and chemical erosion resistance while ensuring high quality printing effect. The ink film can not be aged or embrittled even if the ink film is cured.

Description

A kind of UV photo-curing ink-jet composition for ink

Technical field

The present invention relates to a kind of UV photo-curing ink-jet composition for ink, more precisely, relate to a kind of composition for ink that possesses excellent weather resistance and chemerosiveness resistent, adaptable across led light source and high precision stamping machine.

Background technology

UV spray ink Printing owing to have prints on demand, at a high speed, high quality, advantage cheaply, employed UV printing ink has solvent-free volatilization, save energy consumption, reduce the advantage of environmental pollution, more and more receives people's favor.The drying of UV printing ink is a photoprocess; The UV luminous energy is absorbed by light trigger in the UV ink adhesive; Cause liquid unit molecule or oligomerization resin polymerization and reticulate solid-state macromolecular process; But the two keys on the light trigger in the ink system and each component molecular structure can not be participated in reaction fully, cause the printing ink after the curing to contain the two keys that have neither part nor lot in reaction.These unreacted trace molecules can continue when daily use and during sun exposure to decompose, and then some chemical bond in the ink molecules chain after solidifying produced decompose, and cause ink film after the curing aging phenomenon such as become fragile to occur.

CN 1632006A one Chinese patent application discloses a kind of ultraviolet cured printing ink for digital flat ink jet printer; By weight percentage, comprising: the light trigger of the prepolymer of 5-25%, the reactive monomer of 60-80%, 1-5% pigment, 3-8%, the tensio-active agent of 0.1-1%, the dispersion agent of 0.5-3%.Wherein, reactive monomer is the mixture of simple function group monomer, bifunctional monomer and trifunctional monomer or polyfunctional monomer.Though this kind UV solidified ink has viscosity preferably, be used for common UV type printer and can obtain good printing effect, because of not using suitable compsn, weathering resistance and chemerosiveness resistent are not good.

Summary of the invention

The present invention is directed to deficiency of the prior art, a kind of UV photo-curing ink-jet composition for ink is provided, when obtaining good printing effect, also possess excellent weathering resistance and chemerosiveness resistent.

Technical scheme of the present invention is: a kind of UV photo-curing ink-jet composition for ink, composed of the following components by weight percentage:

Nano-level pigment 1.0-6.0%;

Ultraviolet isolating agent 2-3%;

Dispersion agent 1.0-6.0%;

Prepolymer 5-15%;

Initiator 3-6%;

Wetting agent 0.5-1.0%;

The reactive monomer surplus;

Wherein, the D90＜200nm of nano-level pigment and ultraviolet isolating agent.

Preferably: said nano-level pigment is selected from C.I. Pigment black 7, C.I. pigment Blue 15: 3, at least a in C.I. pigment Green 7, C.I. pigment Orange 13, C.I. pigment red 122, C.I. pigment violet 19, C.I. Pigment Yellow 73 155, the C.I. Pigment white 6.

Preferably: said ultraviolet isolating agent is selected from least a in silicon-dioxide, the zinc oxide.

Preferably: said dispersion agent is the macromolecule polyacrylic acid dispersion agent.

Preferably: described prepolymer is mono acrylic ester performed polymer and/or polyester acrylate performed polymer.

Preferably: described initiator is one or more in bisacylphosphine oxide, st-yrax diethyl ether, the α-amido ketone.

Preferably: said wetting agent is reactive silicone acrylates.

Preferably: said reactive monomer is ethoxy ethoxy ethyl propylene acid esters, propylene glycol diacrylate.

Preferably: described ink jet ink composition is used for led light source solidified ink-jet printer.

Composition for ink of the present invention can be adaptable across led light source and high precision stamping machine, when having guaranteed the high quality printing effect, possess excellent weathering resistance and chemerosiveness resistent, even after solidifying, aging phenomenon such as become fragile can not appear in ink film yet.

Embodiment

Below in conjunction with specific embodiment technical scheme of the present invention is further described, but protection scope of the present invention is not limited thereto.

EFKA 4800 in the embodiment of the invention (vapour Bagong department) staple is the polyacrylic ester of modification, is as macromolecule dispersing agent; CN 152 (Sartomer) staple is the mono acrylic ester oligopolymer, and CN 2295 (Sartomer) staple is the polyester acrylic ester oligomer, is prepolymer;

819 (vapour Bagong department) staple is a bisacylphosphine oxide;

651 (vapour Bagong department) staple is the two ether of st-yrax;

907 (vapour Bagong department) staple is α-amido ketone, is initiator;

RAD 2100 (Di Gao chemical company) staple is an organic silicon acrylic ester, is reactive silicone acrylates class wetting agent.

Embodiment 1

UV photo-curing ink-jet ink, it comprises following component by weight percentage: 76% C.I. Pigment black, 1.5% silicon-dioxide, zinc oxide 0.5%, EFKA 4050 (vapour Bagong department) 6%, CN 2295 (Sartomer) 6%,

819 (vapour Bagong department) 3%, Irgacure651 (vapour Bagong department) 3%, TEGO

2100 (Di Gao chemical company) 1%, ethoxy ethoxy ethyl propylene acid esters 20%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 2

UV photo-curing ink-jet ink, it comprises following component by weight percentage: the C.I. pigment Blue 15: 35%, silicon-dioxide 2%, EFKA 4800 (vapour Bagong department) 4%, CN 2295 (Sartomer) 6%,

819 (vapour Bagong department) 3%, 651 (vapour Bagong department) 3%,

RAD2100 (Di Gao chemical company) 1%, ethoxy ethoxy ethyl propylene acid esters 20%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 3

UV photo-curing ink-jet ink, it comprises following component by weight percentage: C.I. pigment red 122 5%, silicon-dioxide 3%, EFKA 4800 (vapour Bagong department) 4%, CN 2295 (Sartomer) 6%,

819 (vapour Bagong department) 4%,

651 (vapour Bagong department) 2%, TEGO 2100 (Di Gao chemical company) 0.9%, ethoxy ethoxy ethyl propylene acid esters 20%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 4

UV photo-curing ink-jet ink, it comprises following component by weight percentage: C.I. Pigment Yellow 73 1556%, silica 1 %, zinc oxide 2%, EFKA 4800 (vapour Bagong department) 4%, CN 2295 (Sartomer) 6%,

819 (vapour Bagong department) 3%,

651 (vapour Bagong department) 3%, TEGO

2100 (Di Gao chemical company) 0.8%, ethoxy ethoxy ethyl propylene acid esters 20%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 5

UV photo-curing ink-jet ink, it comprises following component by weight percentage: the C.I. pigment Blue 15: 31%, silicon-dioxide 2%, EFKA 4050 (vapour Bagong department) 2%, CN 152 (Sartomer) 15%,

907 (vapour Bagong department) 2%,

184 (vapour Bagong department) 1%, TEGO

2100 (Di Gao chemical company) 0.5%, ethoxy ethoxy ethyl propylene acid esters 30%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 6

UV photo-curing ink-jet ink, it comprises following component by weight percentage: C.I. pigment red 122 1.2%, zinc oxide 2%, EFKA 4800 (vapour Bagong department) 1%, CN 152 (Sartomer) 15%,

907 (vapour Bagong department) 2%,

184 (vapour Bagong department) 1%, TEGO

2100 (Di Gao chemical company) 0.5%, ethoxy ethoxy ethyl propylene acid esters 30%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 7 (comparative example)

UV photo-curing ink-jet ink, it comprises following component by weight percentage: C.I. Pigment Yellow 73 1556%, EFKA 4800 (vapour Bagong department) 4%, CN 2295 (Sartomer) 6%,

819 (vapour Bagong department) 3%,

651 (vapour Bagong department) 3%, TEGO

2100 (Di Gao chemical company) 0.8%, ethoxy ethoxy ethyl propylene acid esters 20%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

Embodiment 8 (comparative example)

UV photo-curing ink-jet ink, it comprises following component by weight percentage: the C.I. pigment Blue 15: 35%, silicon-dioxide 2%, EFKA 4800 (vapour Bagong department) 4%, CN 152 (Sartomer) 20%,

819 (vapour Bagong department) 3%,

651 (vapour Bagong department) 3%, TEGO

2100 (Di Gao chemical company) 1%, ethoxy ethoxy ethyl propylene acid esters 30%, propylene glycol diacrylate surplus.Said components is mixed in proportion after 0.22 micron membrane filtration can make UV photo-curing ink-jet ink.

The test of printing fluency:

The UV photo-curing ink-jet ink of case study on implementation 1-6 and embodiment 7-8 is respectively printed 5 square metres of monochromatic color lumps on rowland LED-330UV stamping machine, the printing test page or leaf is seen initial broken string situation; Room temperature condition is shut down after 7 days down, and the printing test page or leaf is seen the intermittent printing performance again.Print result such as following table:

Annotate: " ◎ " expression test sheets broken string is below 5, and fluency/intermittent printing performance is qualified.

" ● " expression test sheets breaks more than 5 fluency/intermittent printing performance inconsistency lattice.

The fastness test:

The UV photo-curing ink-jet ink of case study on implementation 1-6 and embodiment 7-8 is respectively printed monochromatic color lump on rowland LED-330UV stamping machine, after the LED irradiation is solidified, test color lumps cured film fastness.Test result such as following table:

Claims (9)

1. UV photo-curing ink-jet composition for ink is characterized in that: composed of the following components by weight percentage:

Nano-level pigment 1.0-6.0%;

Ultraviolet isolating agent 2-3%;

Dispersion agent 1.0-6.0%;

Prepolymer 5-15%;

Initiator 3-6%;

Wetting agent 0.5-1.0%;

The reactive monomer surplus;

Wherein, the D90＜200nm of nano-level pigment and ultraviolet isolating agent.

2. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: said nano-level pigment is selected from C.I. Pigment black 7, C.I. pigment Blue 15: 3, at least a in C.I. pigment Green 7, C.I. pigment Orange 13, C.I. pigment red 122, C.I. pigment violet 19, C.I. Pigment Yellow 73 155, the C.I. Pigment white 6.

3. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: said ultraviolet isolating agent is selected from least a in silicon-dioxide, the zinc oxide.

4. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: said dispersion agent is the macromolecule polyacrylic acid dispersion agent.

5. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: described prepolymer is mono acrylic ester performed polymer and/or polyester acrylate performed polymer.

6. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: described initiator is one or more in bisacylphosphine oxide, st-yrax diethyl ether, the α-amido ketone.

7. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: said wetting agent is reactive silicone acrylates.

8. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: said reactive monomer is ethoxy ethoxy ethyl propylene acid esters, propylene glycol diacrylate.

9. UV photo-curing ink-jet composition for ink according to claim 1 is characterized in that: described ink jet ink composition is used for led light source solidified ink-jet printer.