A process for the preparation of bis-hexylene triamine
By combining pre-distillation, light component removal tower, and heavy component removal tower, the problem of low purity of dihexanetriamine in hexanediamine production was solved, achieving high purity and high yield of dihexanetriamine separation and purification, thus enhancing its value utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI JIEDA NYLON MATERIALS CO LTD
- Filing Date
- 2026-04-07
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the bis(hexamethylenetriamine) produced during the production of hexamethylenediamine has low purity, which leads to its disposal as hazardous waste or its sale at low prices, resulting in its underutilization. In addition, the incineration process generates a large amount of pollutants.
A combined process of pre-distillation, light-weight removal tower, and heavy-weight removal tower was used to remove impurities such as hexamethylenediamine, N,N-diethylhexamethylenediamine, aminohexanonitrile, and 1,2-cyclohexamethylenediamine, finally obtaining high-purity and high-yield bis(hexamethylenediamine).
This method enables the separation and purification of bis(hexylenetriamine) with high purity and high yield, thereby enhancing the utilization value of bis(hexylenetriamine) and reducing pollution and costs associated with hazardous waste treatment.
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Figure CN122404154A_ABST