一种全氟异丁腈的制备方法
By using 2-halogenated heptafluoropropane, cyanide, and iodide as catalysts in a protic solvent to prepare perfluoroisobutyronitrile, the reaction steps and post-treatment are simplified, solving the problems of high production cost and low yield in the prior art, and realizing the preparation of high-purity and high-yield perfluoroisobutyronitrile.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG HAIHUA GRP CO LTD
- Filing Date
- 2026-01-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for synthesizing perfluoroisobutyronitrile involve lengthy reaction steps, complex post-processing, low overall reaction yield, high production costs, and cumbersome post-processing steps, which affect product yield and purity.
Perfluoroisobutyronitrile (PFOBN) is produced by heating 2-halogenated heptafluoropropane, cyanide, trimethylcyanosilane, and iodide in an aprotic solvent. The product is then purified by pressure distillation, simplifying the post-processing steps and avoiding the use of additional phase-transfer catalysts and expensive organic ligands.
This process achieves simple technology, low production cost, high product yield (85.7-94.3%), and high purity (99.3-99.9%), reducing production costs and improving product purity and yield.
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