Table 1.

Formulation of vulcanizing agent.

Compound in formulation	Dry weight (phr)a)
Natural rubber	100
Silica	10
50% Sulfur	1
10% KOH	0.5
20% K-lualate	1
50% ZnO	1
50% ZDECb)	0.8

^a)phr: parts per hundred rubber.

^b)ZDEC is Dithiocarbamates.