Moisture cure coating (TDI)

Home
Formulation Moisture Cure Coating
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

Last edited on:

November 16, 2006

Copyright, Design, Layout and Technical Content by: