Novel aromatic diamines which are useful as chain extenders for urethane and urea polymers are compounds corresponding to the formula:
wherein two of the R, R', and R'' substituents are alkyl groups containing 1-6 carbons and the other substituent is a hydrocarbylthio group containing 1-6 carbons.
可用作聚
氨酯和
脲聚合物扩链剂的新型芳香族二胺是与式子相对应的化合物:
其中两个 R、R'和 R'''取代基是含 1-6 个碳原子的烷基,另一个取代基是含 1-6 个碳原子的烃
硫基。