General
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KEYCURE 8027 is a highly efficient UV curing additive which is used to initiate the photopolymerisation of reactive prepolymers - e.g. acrylates - in combination with mono- multifunctional monomers.
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KEYCURE 8027 is completely aligned with market requirements in terms of productivity emission. This new photo-initiatis remarkable by its: |
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- excellent reactivity i.e. superiority over conventional a Hydroxyketones like PI-184 PI-1173; - low sensitivity to oxygen inhibition; - low emission odafter curing.
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KEYCURE 8027 is especially suitable fall types of pigmented UV-inks (offset, screen, flexo Ink Jet) Clear coatings, in particular in thin coatings like overprint varnishes but also in a variety of coating applications. |
Chemical Structure
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2-Hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]-phenyl}-2-methyl-propan-1-one |
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Molecular weight: |
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340.4 |
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CAS-No. |
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474510-57-1 |
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Physical properties
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Appearance |
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White crystalline powder |
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Assay |
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≥99.0% |
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Melting point |
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82-90℃ |
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Humidity |
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≤6% |
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10% Methanlo solution |
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Clear |
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Solubility at 22°C(g/100g solution) |
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PI-1173 40 % TPGDA 15 % TMPTA 15 % EBECRYL 160 15 % OTA 480 >15 % DPHA 5 % |
Application
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KEYCURE 8027 may be used after adequate testing alone in combination with suitable co-initiators, such as PI-379,PI-819 fUV curable inks in coating formulations fapplications on paper, wood, metal plastic materials. Its red-shifted absorption spectrum makes it especially suitable fUV curable inks in general semi opaque systems. |
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In these applications it delivers properties like very high cure speed low odor. In UV curable inks it gives (in combination with other photoinitiators) outstanding surface cure properties. |
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Low sensitivity to oxygen inhibition associated with reduced emission are of particular interest foverprint varnishes ftop coats fwood parquets. |
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In UV curable cationic inks coatings the use of KEYCURE 8027 as a co-initiattogether with e.g. PI-250 has been demonstrated to result in an exceptionally high-performance formulation. |
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The amount of KEYCURE 8027 required foptimum performance should be determined in trials covering a concentration range. |
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Recommended concentrations: |
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clears |
1-6 % |
KEYCURE 8027 |
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inks (free radical systems) |
2-5 % |
KEYCURE 8027 combined with other PIs like e.g. PI-379 PI-819. |
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Inks (cationic systems) |
0.5 -2 % |
KEYCURE 8027 combined with other PI such as PI- 250 |
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Absorption Spectrum(% in Acetonitrile)
Packing
20Kg Box
Safety handling The KEYCURE 8027 should be handled in accordance with good industry practices.Details are provided in the Material Security Data Sheet (MSDS).
产品简介
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KEYCURE 8027是一种新型不黄变的紫外光引发剂，用于引发不饱和预聚体系的UV聚合反应。
它具有以下几个特点： 1.与传统的α-羟基酮类光引发剂相比具有更优越的反应性。 2.对氧的阻聚作用低敏感。 3.固化后低挥发和低气味。
KEYCURE 8027光引发活性与 1173 、184 相当；对氧气敏感性较低，表面固化效果较好，适用于低粘度、薄涂层UV 涂料。由于分子量大，挥发性低，自身气味及光解产物气味较低，特别适合用于对气味有要求的UV清漆和面漆。与379、819等光引发剂组合使用，可获得的光引发活性，可用于UV油墨和喷墨UV油墨。
KEYCURE 8027特别适用于各种类型的UV墨水和透明涂层，特别是像复印清漆那样的薄涂层。 |
化学结构
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1,1’-(亚甲基二-4,1-亚苯基)双[2-羟基-2-甲基-1-丙酮] |
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分子量: |
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340.4 |
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CAS No. |
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474510-57-1 |
物理性质
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外观 |
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白色固体粉末 |
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含量 |
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≥99.0% |
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熔点 |
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82-90℃ |
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挥发份 |
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≤0.15% |
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澄清度 |
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清澈（10%甲醇溶液） |
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溶解度 在22°C(g/100g 溶液) |
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PI-1173 40 % TPGDA 15 % TMPTA 15 % EBECRYL 160 15 % OTA 480 >15 % DPHA 5 % |
应用
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KEYCURE 8027特别适用于各种类型的UV墨水和透明涂层，特别是复印清漆那样的薄涂层。经过测试可单独使用或者与适当的引发剂混合使用。如与PI-379，PI- 819混合时，吸收光谱红移，可用于UV固化油墨和普通半不透明体系。在这些应用中表现出非常高的固化速度和低气味，在UV固化油墨中（与其它光引发剂结合）提供显著的表面固化性。
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推荐用量
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体系 |
8027用量 |
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透明涂料 |
2-5 % |
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油墨（自由基体系） |
2-5 % |
与其他光引发剂如PI-379、PI-819复配 |
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油墨（阳离子体系） |
0.5 -2 % |
与其他光引发剂如250复配 |
包装
20KG/箱 360KG/托盘
