Name：PEMP
PEMP
Pentaerythritol Tetra (3-mercapto- propionate)
PEMP is a tetra-functions polythiol. TMMP can be usable in many systems.
Characteristic:
1. low odor
2. non-halogen
3. low viscosity,100% reactive
4. clear, colorless liquid, high refractive index
5. low shrinking and low oxygen inhibition (Thiol-Ene system)
6. chemical variability: react with epoxy, isocyanate, unsaturated compound and UV(EB)
7. varying hardness and flexibility
Application:
1. coating and print
2. adhesive and sealant
3. UV and EB curing system
4. optical lens
Specification:
|
Appearance |
Clear, colorless liquid |
|
Content (%w/w) |
95 min |
|
Color (APHA) |
50 max |
|
SH functionality |
4 |
|
MW |
488.2 |
|
Viscosity (Brookfield cps@25℃) |
450 |
|
Mercapto Sulfur (SH %) |
23.6-24.9 |
|
AHEW (g/eq) |
122 |
|
Acid number mg KOH/g |
1.0 max |
|
Refractive index |
1.53 |
|
Specific Gravity |
1.072-1.082 |