Thiol-ene （ hardener ） "allyl based"
Thiol-ene based formulations can be used as a cross-linking agent with various resins such as allyl, vinyl, unsaturated polyester, and polybutadiene not only ( meth ) acrylate.
Compared to conventional UV curable systems, Thiol-ene based formulations has advantages such as less effect of oxygen suppression, low shrinkage, flexibility, deep curability and high sensitivity.
Property as a chain transfer agent
[ Thiyl radical attacks allyl ]
[ chain transfer reaction ]
-
thiol-ene： Thiol is one of the cross-linking components -
aclyrate： Thiol is additional agent
（ mainly self-polymerization of acrylic group ）
| formulation | thiol-ene system | aclyrate system |
|---|---|---|
| monomer | allyl | aclyrate |
| Flexibility | ◎ | △～〇 |
| Adhesion | ◎ | 〇 |
| Transparency | ◎ | ◎ |
| Surface curability | ◎ | △～〇 |
| Curing shrinkage | small | big |
High stability
Reactivity of thiol-ene
It shows high curability even in air.
| evaluation condition | ・Catalyst:IRG907 ( 1phr ) , TPO-L ( 1phr ) ・LED-UV （ 365nm ）：Illuminance 150mW/cm2 ・Coating and curing in an air atmosphere ・Measuring double bond conversion rate by FT-IR |
|---|
It can also cure thin to thick orthopedic and colored compositions.
Transparency
Thiol-Ene photo-cured product
PE1 / DAP / IRG184 = 52 / 48 / 0.5
Acrylic photo-cured product
TMPTA / IRG184 = 100 / 2
※The information contained herein is based upon data considered true and accurate. However, Resonac Corporation accepts no responsibility or risk which may result from the handling and use of products or for infringement of any patent.
※TMPTA ： Trimethylolpropane triacrylate
DAIP ： Dialyl Isophthalate