Plants that Vulcanized Rubber
Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140–160°C.
Through years and years of field work, we have found other areas of Guatemala where other plants which can produce coagulation of latex (more than just Ipomoea alba) grow physically near Castilla elastica trees. During considerable library research we have learned of two plants other than just Ipomoea alba that can fully coagulate latex (any one of the three plants has the pertinent chemicals).
Nicholas Hellmuth & Pedro Pablo Marroquín