| abstract |
The invention disclosed herein relates to a process for making elastomeric rubber articles, and in particular, the process of producing such articles from non-Hevea brazilensis rubber sources, such as Guayule (Parthenium argentatum) natural rubber that exhibits physical strength properties similar to or superior to that of Hevea brazilensis natural rubber latex. In one embodiment, the process comprises an accelerator composition at the pre-cure stage comprised of variable combinations of a dithiocarbamate, a thiazole, a guanidine, a thiuram, or a sulfenamide. The accelerator composition may be comprised of, but is not limited to, zinc diethyldithiocarbamate (ZDEC), t-butyl benzothiazosulfenamide (TBBS) and diphenyl guanidine (DPG); an accelerator composition comprised of zinc diethyldithiocarbamate (ZDEC), n-cyclohexyl benzothiazosulfenamide (CBTS) and diphenyl guanidine (DPG). The disclosed invention also includes the elastomeric articles made by the disclosed process. |