Rubber composition containing natural rubber and process for stabilizing viscosity and suppressing odors in natural rubber

Right after manufacturing, natural rubber exhibits a low viscosity, however after storage, transport or similar of about 1 month or so, viscosity rises (gelation) and a phenomenon called storage hardening occurs. Furthermore, as natural rubber is a natural product raw material, problems such as decay or similar during storage, manufacturing etc. can result in the release of distinctive odors. In order to solve said problems, the present invention provides a rubber composition containing natural rubber, in which an aminoguanidine composition is mixed into the natural rubber in order to achieve viscosity stabilization in the long term, and in which odors are considerably reduced. 天然橡胶在其刚制造出之后呈现较低的粘度，但是，通过贮存和运输等经过1个月左右的时间之后，会发生粘度上升即所谓的贮存硬化现象。此外天然橡胶的原料为天然产物，因此存在保管中和制造工序中会因为腐烂等而散发出独特的恶臭的问题。本发明为了解决这些问题，提供了种含天然橡胶的橡胶组合物，该天然橡胶中添加有氨基胍化合物，能够在长时间保持粘度稳定化的同时，显著地减少臭气。