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KarenzMT®

Advantages for UV Additive

・Improvement of UV Curing
・Strong Adhesion
・Better Transparency
・Excellent Shelf-life


Curing

Curing(1)
It was observed that the conversion of C=C double bond was increased dependently on KarenzMT contents.

Fig.1 Conversion of Double Bond vs KarenzMT Contents
Fig.1 Conversion of Double Bond vs KarenzMTR Contents

MonomerBPDA (bisphenol A type diacrylate)
KarenzMTBD1、NR1、PE1
InitiatorIRGACURE 184 2wt%
Exposure Dose800mJ/cm2


Curing(2)
UV露光

Monomer
BPDA
KarenzMTPE1 2wt%
InitiatorIRGACURE 184 2wt%


Curing(3)
It was observed that development was improved by KarenzMT addition.

Fig.2 Residual layer thickness (alkali developing)
Fig.2 Residual layer thickness (alkali developing)

Monomer(Green pigment and acrylic polymer) dispersion・epoxyacrylate
KarenzMTPE1


Adhesion

Improvement of adhesion strength was observed by KarenzMT addition.

Fig.3 Glass Substrate
Fig.3 Glass Substrate

MonomerBPDA
KarenzMTBD1, NR1, PE1
InitiatorIRGACURE 184 2wt%
Exposure Dose500mJ/cm2


Fig.4 Plastic Substrate (polyethylene terephthalate)
Fig.4 Plastic Substrate (polyethylene terephthalate)

MonomerBPDA
KarenzMT PE1
Initiator
IRGACURE 184 2wt%
Exposure Dose
500mJ/cm2


Transparency

Transparency was getting better by KarenzMT contents increase.

Fig.5 Influence of KarenzMT Contents on Transparency
Fig.5 Influence of KarenzMTR Contents on Transparency

MonomerBPDA, HDA(hexanediacrylate)
KarenzMTBD1
InitiatorIRGACURE 184 2wt%
Exposure Dose500mJ/cm2
Film Thickness100μm


Shelf-life

It was observed that KarenzMT composition was stable for more than 2weeks at 40℃.

Fig.6 Viscosity Changes of Compositions
Fig.6 Viscosity Changes of Compositions

MonomerDPHA (dipentaerythritolhexaacrylate)
KarenzMTBD1、NR1、PE1 2wt%
Comparative ThiolPEMP
Temperature
40℃




※The information contained herein is based upon data considered true and accurate. However, SHOWA DENKO K.K. accepts no responsibility or risk which may result from the handling and use of products or for infringement of any patent.