Calculation of the required amount of moca (mbca) to cast with a hot cure (tdi)

 

Mass of MOCA = Mass of Prepolymer x Equivalent weight of MOCA x 0,95
4200
Prepolymer NCO%

FOR EXAMPLE: For a casting of:

  • 100 p.b.m. of Ultracast 10T90 with a NCO% OF 4.20
  • 95% cure with MOCA
  • Equivalent Weight of MOCA is 133,6
Mass of Moca = 100 x 133,6 x 0,95
4200
4,20

 

=   12 692
1000

 

=   12,69 p.b.m. of MOCA/100 p.b.m. of 10T90



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