|
Structure
Physical properties
| Equivalent Weight |
107 |
| Appearance |
Amber Liquid |
| Odor |
Slight Amine |
| Boiling Point℉(℃) |
667(353)(ecomposes) |
| Density(g/cm3)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
HARTCURE 30, 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.
HARTCURE 30 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.
Example
| Prepolymer (NCO 4.1) |
100Pts |
100Pts |
| MOCA @ 95% Theory |
12.4Pts |
— |
| HARTCURE 30(DMTDA) @ 95% Theory |
— |
9.9Pts |
| Formula Weight |
112.4Pts |
109.9Pts |
Physical properties of prepolymer cured with HARTCURE 30(DMTDA) curative
The specific gravity of HARTCURE 30(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 HARTCURE 30.
Package:
1. 25kg/iron drum
2. 200kg/iron drum
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