Explanation
It is a kind of natural polymer materials extracted from rubber containing tissues such as leaves, bark and seeds of Hevea rubra. Its molecular structure is trans-1,4-polyisoprene, which is a kind of trans natural rubber. The appearance color of eucommia ulmoides gum can be seen from the preparation method of eucommia ulmoides gum and the content of resin from pure white to brown. There are two industrial preparation methods: alkali boiling method and solvent method.
Classification
Organic polymer materials -> Rubber