|
|
|
|
|
|
|
Polypropylene glycol MW 2000 (CAS # 25322-69-4) |
|
17.5 |
|
|
|
Polyether triol (OH # 630) (CAS # 25791-96-2) |
|
7.72 |
|
|
Trimethylolpropane (CAS # 77-99-6) |
|
0.88 |
|
|
Antioxidant 2,6-Di-tert-butyl-p-Cresol (CAS # 128-37-0) |
|
0.02 |
|
|
Dibutyltin dilaurate (DBTDL), (CAS # 77-58-7) |
|
0.02 |
|
|
Xylene |
|
29 |
|
|
2-Ethoxyethylacetate |
|
29 |
|
|
Toluene diisocyanate TDI 80/20 (CAS # 26471-62-5) |
|
16.0 |
|
|
NCO/OH ratio
|
|
1.5
|
|
|
Prepolymer properties |
|
|
|
|
Nonvolatile, % |
|
42 |
|
|
Viscosity (Gardner-Holdt) |
|
C |
|
|
Free Isocyanate, % |
|
2.4 |
|
|
Film Properties |
|
|
|
|
Tack-free time, minutes |
|
30 |
|
| Pencil Hardness |
|
H-2H |
|
| Sward hardness 1hour |
|
32 |
|
|
24
hours |
|
40 |
|
| Impact resistance |
|
|
|
|
Front in.lb |
|
>160 |
|
|
Reverse in.lb |
|
>160 |
|
|
Tensile strength, psi
|
|
4,500
|
|
|
Elongation, % |
|
130
|
|
|
Taber Abrasion C-10 wheel, 1000g, 1000 cycles, mg loss |
|
20 |
|
|
|
|
|
|
|
|
