| 摘要 |
<p>Disclosed are polyalkylenepolyamine compositions, comprising a di(C-alkyl)-diethylenetriamine of general structure (A), where either R1 of R2 is hydrogen and either R3 or R4 is hydrogen, and where the remaining two non-hydrogen R groups are independently either: (i) a long chain alkyl group having between 18 to 22 carbon atoms; or (ii) a short chain alkyl group having 8 to 16 carbon atoms; provided that if both alkyl groups on the di(C-alkyl)-diethylenetriamine are long chain (i), or both alkyl groups are short chain (ii), then the composition contains a mixture of said structures some of which have long chain alkyl groups and some of which have short chain alkyl groups. A method of minimizing trialkanolamine formation in polyalkylenepolyamine compositions is also disclosed.</p> |
