Table 1. Recipe for CR Compound (CR-60)

Ingredients Amounts (phr) Manufacturer (Ltd.)
CR(M-40) 100 Denka Co.
N774(SRF) 60 Birla Carbon Co.
CaCO3 100 Kwangsung Chemical Co.
A-2 24 Michang Oil Ind. Co.
MgO 4 POSREC
ST 1 DANSUK
3C 2 Kumho Petrochemical Co.
PA 2 Ouchi Shinko Chemical Ind. Co.
ZnO 5 Hanil Chemical Ind. Co.
NA-22 0.5 Qingdao Chemical Co.
TT 0.5 OCI Co.