Elastomers - Era Polymers

Polyether (PTMEG) TDI Prepolymers – Shore A
High Performance Ultra High Performance
Erapol Prepolymer E77A E83A E90A E93A E95A ET83A ET90A ET95A EHP85A EHP90A EHP93A EHP95A
Prepolymer Properties
%NCO 2.4 ± 0.20 3.10 ± 0.20 4.20 ± 0.20 5.00 ± 0.20 6.25 ± 0.25 3.10 ± 0.20 4.20 ± 0.20 6.25 ± 0.25 3.50 ± 0.20 4.60 ± 0.20 5.20 ± 0.20 5.80 ± 0.20
Specific Gravity at 25°C 1.08 1.05 1.06 1.05 1.07 1.05 1.06 1.06 1.06 1.06 1.05 1.10
Viscosity at 80°C 1800 – 3000 1000 – 1500 800 – 1300 500 – 900 300 – 700 1300 – 1800 900 – 1300 300 – 700 900 – 1600 300 – 900 500 – 900 400 – 800
Colour
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
clear, light
amber
Moca Processing
Moca Level at 110 -120°C (pph) 7.3 10.0 12.5 15.0 19.0 10.0 12.5 19.0 11.1 14.0 15.7 17.5
Recommended % Theory 95 100 95 95 95 100 95 95 100 95 95 95
Erapol Temperature (°C) 80 – 90 75 – 85 75 – 85 75 – 85 75 – 85 75 – 85 75 – 85 75 – 85 70 – 80 75 – 85 75 – 85 75 – 85
Pot Life / Prepolymer at 80°C (minutes) 25 15 10 8 6 8 6 4 17 8 8 5
Demould at 100°C (hours) 2 1 1 1 1 1