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.

KEYCURE 8027 is completely aligned with market requirements in terms of productivity emission.

This new photo-initiatis remarkable by its:

- excellent reactivity i.e. superiority over conventional a Hydroxyketones like PI-184 PI-1173;

- low sensitivity to oxygen inhibition;

- low emission odafter curing.

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.

2-Hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]-phenyl}-2-methyl-propan-1-one

Molecular weight:

：

340.4

CAS-No.

：

474510-57-1

Appearance

：

White crystalline powder

Assay

：

≥99.0%

Melting point

：

82-90℃

Humidity

：

≤6%

10% Methanlo solution

：

Clear

Solubility at 22°C(g/100g solution)

：

PI-1173                40 %

TPGDA                15 %

TMPTA                15 %

EBECRYL 160          15 %

OTA 480              >15 %

DPHA                 5 %

□

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.

□

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.

□

Low sensitivity to oxygen inhibition associated with reduced emission are of particular interest foverprint varnishes ftop coats fwood parquets.

□

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.

□

The amount of KEYCURE 8027 required foptimum performance should be determined in trials covering a concentration range.

Recommended concentrations:

clears  

1-6 %

KEYCURE 8027

inks (free radical systems)

2-5 %

KEYCURE 8027 combined with

other PIs like e.g. PI-379 PI-819.

Inks (cationic systems)

0.5 -2 %

KEYCURE 8027 combined with

other PI such as PI- 250

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。

1,1’-(亚甲基二-4,1-亚苯基)双[2-羟基-2-甲基-1-丙酮]

分子量:

：

340.4

CAS No.

：

474510-57-1

外观

：

白色固体粉末

含量

：

≥99.0%

熔点

：

82-90℃

挥发份

：

≤0.15%

澄清度

：

清澈（10%甲醇溶液）

溶解度

 在22°C(g/100g 溶液)

：

PI-1173                40 %

TPGDA                15 %

TMPTA                15 %

EBECRYL 160          15 %

OTA 480              >15 %

DPHA                  5 %

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。

    低挥发性和对氧气阻聚作用的低敏感使KEYCURE 8027在复印清漆（油墨）和木质地板顶漆方面有较好的效果。

    在UV光固化阳离子油墨和涂料KEYCURE 8027与其它引发剂如阳离子引发剂 250混合使用已被证实是非常的配方。

体系

8027用量

透明涂料

2-5 %

油墨（自由基体系）

2-5 %

与其他光引发剂如PI-379、PI-819复配

油墨（阳离子体系）

0.5 -2 %

与其他光引发剂如250复配