| abstract |
N-hydroxyalkylated polyamines, methods of making N-hydroxyalkylated polyamines, and drilling fluids containing N-hydroxyalkylated polyamines are provided, in which the N-hydroxyalkylated polyamine includes Formula (I): n n n n n n n n n n where R 1 and R 2 are independently a —C or —CH group; R 3 is an aliphatic hydrocarbyl; R 4 and R 5 are independently acyclic hydrocarbyls, or R 1 , R 2 , R 4 , and R 5 are covalently connected to form a cyclic hydrocarbyl; and R 6 , R 7 , R 8 , and R 9 are independently acyclic hydrocarbyls or acyclic heterohydrocarbyls. |