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US 11,028,043 B2Granted
N-hydroxyalkylated polyamines, methods of making n-hydroxyalkylated polyamines, and fluids containing an n-hydroxyalkylated polyamine
AssigneeSaudi Arabian Oil Company
InventorsMatthew Hilfiger, B. Raghava Reddy
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Abstract
Methods of making N-hydroxyalkylated polyamines are provided, in which the method includes reacting a polyamine comprising Formula (XXIV): with a cyclic oxide to produce the N-hydroxyalkylated polyamine, where R1 and R2 are independently a —C or —CH group; R3 is an aliphatic hydrocarbyl; and R4 and R5 are independently acyclic hydrocarbyls, or are covalently connected to form an unsaturated cyclic hydrocarbyl.
Claims6
A method of making an N-hydroxyalkylated polyamine comprising:
- reacting a polyamine of Formula (XXIV):
- with a cyclic oxide to produce the N-hydroxyalkylated polyamine;
- where:
- R1 and R2 are independently a —C or —CH group;
- R3 is an aliphatic hydrocarbyl;
- and
- R4 and R5 are independently acyclic hydrocarbyls, or R1, R2, R4, and R5 are covalently connected to form an unsaturated cyclic hydrocarbyl, wherein the unsaturated cyclic hydrocarbyl is substituted with one or more of alkyl, aminoalkyl, aminoalkoxy, hydroxyl, alkoxyl, alkylthio, amino, halo, haloalkyl, silyl, phosphoryl, sulfonyl, saturated C2-C20 acyclic hydrocarbyls, or unsaturated C2-C20 acyclic hydrocarbyls.
4 more elements
Dependencies are inferred from the claim text.