Table 1. Formulation (phr)

Compound No. NR1 NR2 NR3 NRBR1 NRBR2 NRBR3
NR 100 100 100 80 80 80
BR 0 0 0 20 20 20
N234 35 55 75 35 55 75
ZnO 4 4 4 4 4 4
Stearic acid 3 3 3 3 3 3
HPPD 2 2 2 2 2 2
TMQ 1 1 1 1 1 1
Wax 1 1 1 1 1 1
Oil 5 5 5 5 5 5
Sulfur 1.3 1.3 1.3 1.3 1.3 1.3
TBBS 1.1 1.1 1.1 1.1 1.1 1.1
PVI 0.3 0.3 0.3 0.3 0.3 0.3