CN102643575B

CN102643575B - Colored UV (ultraviolet) ink for printing under protection of nitrogen gas

Info

Publication number: CN102643575B
Application number: CN201210127312.XA
Authority: CN
Inventors: 解传红; 刘洪生; 詹建波; 余振华; 李良
Original assignee: Guangdong Xinyouwei Printing Equipment Technology Co Ltd; YUNNAN QINGTIANXIANG TECHNOLOGY DEVELOPMENT Co Ltd; KAILEFO PRINTING MATERIAL CO Ltd YUNNAN
Current assignee: Guangdong Xinyouwei Printing Equipment Technology Co Ltd; YUNNAN QINGTIANXIANG TECHNOLOGY DEVELOPMENT Co Ltd; KAILEFO PRINTING MATERIAL CO Ltd YUNNAN
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2014-05-21
Anticipated expiration: 2032-04-27
Also published as: CN102643575A

Abstract

The invention relates to colored UV ink for printing under the protection of nitrogen gas, belonging to the technical field of ink. The product is composed of the following components in percentage by weight: 5-10% of mono-functional low polymer, 8-15% of bi-functional low polymer, 15-25% of tri-functional low polymer, 1-5% of multi-functional low polymer, 20-30% of propoxylation monomer, 5-15% of photoresist, 0.1-5% of auxiliary agent, 5-10% of monoazo organic raw material, and 10-15% of bisazo organic raw material. The ink has the beneficial effects that the photoinitiator content in the product is only about 20% that the traditional UV colored ink; used for UV printing under the protection of nitrogen gas, the ink is free of toxicity or harm, odorless, energy-saving and environment-friendly; and the printing quality and VOC (volatile organic compound) indexes can comprehensively achieve the updated industry standard.

Description

For coloured UV ink of nitrogen protection printing

Technical field

The invention belongs to technical field of ink.

Background technology

UV curable ink (Ultra-violet Cured Ink), is called for short UV ink, refers under uviolizing, utilizes the UV-light of different wave length and energy to make ink film forming and dry ink.The major ingredient of existing UV ink is made up of low-melting ink vehicle, pigment, reactive thinner, light trigger and auxiliary agent.Low-melting ink vehicle content accounts for 30%-50%, is one of main ink filmogen, has determined the character of ink, generally adopts saturated or unsaturated dibasic acid ester and acrylic resin etc.Reactive thinner is the reactive monomer compound that molecular weight is larger, and content accounts for 40%-60%, is mainly used in regulating ink viscosity.Light trigger is the organic compound of the characteristic group of exciting light cured resin crosslinking reaction, content is 3%-8%, it produces radical or radical ion initiation photosensitive resin (low-melting ink vehicle) and activity diluting monomer polymerization reaction take place after absorbing UV-light energy, thereby makes molecule crosslinked and polymerizing curable.Light trigger is to cause photopolymerization performed polymer crosslinked active organic group, and the sticking power of UV ink, wear resistance, chemical resistant properties, solvent resistance, hardness, viscosity, curing speed etc. are all decided by photopolymerization performed polymer.The solidification process of UV ink is a polymer cross-linking process, becomes solid-stately by photocuring reaction from liquid state, in whole reaction process, there is no solvent evaporates, is conducive to environment protection.

Tradition UV light-curable ink and typography thereof have a defect that cannot overcome: the packing material that is exactly printing has special stink, softening agent and the residual national sector standard that do not reach of benzene during VOC detects, therefore certainly lead to detrimentally affect to the safety of printing packaging product and suction taste.Cause the major cause of this major defect to be: first, UV curable ink must have light trigger, and most light trigger is the unstable derivative (as benzophenone, four phenmethyls etc.) that contains benzene ring structure; Secondly, traditional UV light-curable ink typography is to carry out in open atmospheric environment, in the time causing photocuring reaction with ultra violet lamp UV ink, first the short-wave band UV-light with higher-energy is caught by airborne oxygen, form the oxygen molecule of excited state, finally form ozonosphere, the ozonosphere of formation has reduced the transmitance of UV-light conversely.Therefore, the each colour cell of traditional UV ink printing under non-nitrogen protection needs the ultra violet lamp of 40KW left and right power to carry out photocuring.At ozone with under compared with the acting in conjunction of high power UV-light, light trigger produces stronger, complicated radical mechanism side reaction, and final benzene and other analogues are free out, cause VOC to detect defective.

Application number is that 200710030174.2 Chinese patent document discloses " a kind of method of drying printed material curing ink and realize the printing press of the method ", and one of its feature is, in drying process, nitrogen protection is carried out in uviolizing region.This patent application is protected Light Curing with the nitrogen that is easy to obtain, the generation of blocking-up ozone, and the subject matter of solution is to reduce dry power and energy consumption.Want further to solve printing package article and there is off-odor; VOC detects underproof problem; need to be under the prerequisite of guaranteeing press quality; reduce to greatest extent the generation of Light Curing side reaction; need to reduce the consumption of the light trigger that contains benzene ring structure; need to be optimized screening to the light trigger component using in UV ink, need to develop the UV ink that is specifically designed to nitrogen protection printing.

Summary of the invention

The object of the present invention is to provide a kind of photoinitiator levels low, the colored ink that is specifically designed to nitrogen protection UV printing.

Product of the present invention is grouped into by the one-tenth of following weight percent:

1. monofunctional low-grade polymer 5%-10%, said monofunctional low-grade polymer is trimethylcyclohexyl acrylate (Trimethyl Cyclohexane Acrylate) specifically, or ring TriMethylolPropane(TMP) methylal acrylate (Cyclic Trimethylolpropane Formal Acrylate), or isodecyl acrylate (I sodecyl Acrylate);

2. two functional group's low-grade polymer 8%-15%, said two functional group's low-grade polymers are hexanediyl ester (Hexanediol Diacrylate) specifically, or tripropylene glycol diacrylate (Tripropylene Glycol Diacrylate), or polyoxyethylene glycol (200) diacrylate (Polyethylene Glycol[200] Diacrylate), or polyoxyethylene glycol (600) diacrylate (Polyethylene Glycol[600] Diacrylate), or ethoxyquin-2-methyl isophthalic acid .3-propylene glycol diacrylate (Ethoxylated 2-Methyl-1.3-Propanediol Diacrylate), or polyoxyethylene glycol (200) dimethacrylate (Polyethylene Glycol[200] Dimethacrylate),

3. trifunctional base low-grade polymer 15%-25%, said trifunctional base low-grade polymer is Viscoat 295 (Trimethylolpropane Triacrylate) specifically, or pentaerythritol triacrylate (Pentaerythritol Triacrylate);

4. multiple functional radical low-grade polymer 1%-5%, said multiple functional radical low-grade polymer is two-trimethylolpropane tetra-acrylate (Ditrimethylolpropane Tetraacrylate) specifically, or dipentaerythritol acrylate (Dipentaerythritol Hexaacrylate);

5. the third oxidation monomer 20%-30%, specifically tripropylene glycol diacrylate (Tripropylene Glycol Diacrylate) of said the third oxidation monomer, or ethoxyquin Viscoat 295 (Ethoxylated Trimethylolpropane Triacrylate), or two-trimethylolpropane tetra-acrylate (Ditrimethylolpropane Tetraacrylate);

6. photoresist 5%-15%;

7. auxiliary agent 1 ‰-5%;

8. monoazo organic raw material 5%-10%;

9. tetrazo organic raw material 10%-15%.

Product of the present invention is by the common process preparation of producing coloured UV ink, and the common process of producing coloured UV ink is known by those skilled in the art.

The invention has the beneficial effects as follows that the photoinitiator levels in product is only 20% left and right of traditional coloured UV ink; ink prints for nitrogen protection UV, and toxicological harmless is tasteless; energy-conserving and environment-protective, press quality and VOC indices all can reach up-to-date industry standard comprehensively.

Embodiment

See following serial embodiment.

Below that Institute of Analysis of Yunnan Province is to the survey report of providing with the large heavy nine cigarette pack shells that embodiment 1 product is printed

Claims

1. for a coloured UV ink for nitrogen protection printing, it is characterized in that being grouped into by the one-tenth of following weight percent:

(1). monofunctional low-grade polymer 5%-10%, specifically trimethylcyclohexyl acrylate of said monofunctional low-grade polymer, or ring TriMethylolPropane(TMP) methylal acrylate, or isodecyl acrylate;

(2). two functional group's low-grade polymer 8%-15%, specifically hexanediyl ester of said two functional group's low-grade polymers, or tripropylene glycol diacrylate, or Macrogol 200 diacrylate, or Polyethylene Glycol-600 diacrylate, or ethoxyquin-2-methyl isophthalic acid .3-propylene glycol diacrylate, or Macrogol 200 dimethacrylate;

(3). trifunctional base low-grade polymer 15%-25%, specifically Viscoat 295 of said trifunctional base low-grade polymer, or pentaerythritol triacrylate;

(4). multiple functional radical low-grade polymer 1%-5%, specifically two-trimethylolpropane tetra-acrylate of said multiple functional radical low-grade polymer, or dipentaerythritol acrylate;

(5). the third oxidation monomer 20%-30%, specifically tripropylene glycol diacrylate of said the third oxidation monomer, or ethoxyquin Viscoat 295, or two-trimethylolpropane tetra-acrylate;

(6). photoresist 5%-15%, said photoresist is N, N-dimethylethanolamine, N methyldiethanol amine, N, N-mesitylenic acid-2-ethylhexyl, N, N mesitylenic acid ethyl ester, N, N-diethylethanolamine, one or more in phenylformic acid dimethylaminoethyl;

(7). auxiliary agent 1%-3%;

(8). monoazo organic raw material 5%-10%;

(9). tetrazo organic raw material 10%-15%;

Said auxiliary agent is above:

A.2,4,6-trimethylbenzoyl-diphenyl phosphine oxide;

Or

B.2-methyl isophthalic acid-(4-first sulfydryl phenyl)-2-code quinoline acetone-1;

Or

C.2,4,6-trimethylbenzoyl-oxyethyl group-phenyl phosphine oxide, and 2-methyl isophthalic acid-(4-first sulfydryl phenyl)-2-code quinoline acetone, the two uses jointly;

Or

D.2,4,6-trimethylbenzoyl-diphenyl phosphine oxide, and 2-methyl isophthalic acid-(4-first sulfydryl phenyl)-2-code quinoline acetone, the two uses jointly.