Description
Equivalent Weight |
107 |
Appearance |
Amber Liquid |
Odor |
Slight Amine |
Boiling Point℉(℃) |
667(353)(ecomposes) |
3 Density(g/cm )at 68℉(20℃) |
1.21 |
140℉(60℃) |
1.18 |
212℉(100℃) |
1.15 |
Viscosity,Cps at 68℉(20℃) |
690 |
140℉(60℃) |
22 |
212℉(100℃) |
5 |
Vapor Pressure, mmHg at 65℉(20℃) |
0.6 |
Amine Number,mg KOH/g |
536 |
TDA content (%) |
≤1.0% |
Moisture |
≤0.1% |
Processing:
DHK Ethancure-300, being a liquid at room temperature results in significant processing advantages, for example, in such operation as transfer, melting down of solids is eliminated. Also, the possibility of freezing-up is no longer a concern during mixing or in meter-mixing machines. Additionally, its liquid state permits processing prepolymer at lower temperatures than that of MOCA.
DHK Ethancure-300 has an equivalent weight of 107 compared to 133.5 for MOCA. This means that about 20% less by weight is required for a given prepolymer at the same stoichiometry.
Physical properties of prepolymer cured with DHK E-300 (DMTDA) curative
The specific gravity of DHK E-300(DMTDA) is about 1.20g/cc at recommended use temperatures of 70-90℉(21-33℃), whereas the specific gravity of molten MOCA at its use temperature of 240℉(116℃) is 1.26. This means that weight delivery by volumetric pumps is comparable for the two materials and therefore if no alterations for meter-mixing
machines, we must change the formula weight of MOCA into that of DHK E-300.
Packing
1. 200kg/drum 2.1ton IBC drum
