Preparation of quaternary ammonium base and its application in dye synthesis
CN122145324BActive Publication Date: 2026-08-28HUBEI RUNTIAN CHEM CO LTD
Patent Information
- Application Number
- CN202610615505.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-07
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2046-05-07
AI Technical Summary
Technical Problem
然而，在氢氧化胆碱的制备及使用过程中，容易伴随生成乙氧基类有机副产物，该类副产物通常呈深黄色、不易溶解，易在后续染料合成或成品储存过程中逐渐析出或形成沉淀，不仅降低反应收率，还会影响所得直接黄11染料的外观品质、溶液稳定性及储存稳定性
Benefits of technology
[0028]根据本申请，将对氨基偶氮苯-4-磺酸和4,4'-二硝基二苯乙烯-2,2'-二磺酸加入氢氧化羟丙基三甲胺水溶液中，经一水葡萄糖还原后可生成稳定的橙39稳定溶液。
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Smart Images
Figure CN122145324B_ABST
Abstract
The application provides a preparation method of quaternary ammonium base and application thereof in dye synthesis. Propylene oxide is added into trimethylamine, nucleophilic ring-opening addition reaction of trimethylamine to the epoxy group of propylene oxide is carried out, hydroxypropyltrimethylammonium hydroxide is obtained, then the hydroxypropyltrimethylammonium hydroxide is used to replace sodium hydroxide in the dye synthesis process, inorganic salt is not introduced into the reaction system, and after the reaction is completed, multiple water washing and salt removal are not needed, so that the wastewater amount and salt load can be obviously reduced.
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Citation Information
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