A fluorine-containing anion resin catalyst and a preparation method thereof, and a preparation method of hydroxypropyl (meth) acrylate
The preparation and application of fluorine-containing weakly basic anion exchange resin catalysts have solved the problems of difficult catalyst recovery and low efficiency of traditional processes, realizing the continuous production of (meth)acrylate, improving product selectivity and production efficiency, and reducing environmental burden.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WANHUA CHEM GRP CO LTD
- Filing Date
- 2024-12-24
- Publication Date
- 2026-06-26
AI Technical Summary
In existing processes for preparing hydroxypropyl methacrylate, the catalyst is difficult to recover and reuse, resulting in a large amount of waste liquid. Furthermore, the traditional batch synthesis process is inefficient and its catalytic activity gradually decreases.
Using a fluorinated weakly basic anion exchange resin catalyst, an oil phase and an aqueous phase are prepared through a polymerization reaction to form oil droplets. These droplets are then washed, filtered, and dried with a non-polar solvent and used for the ring-opening addition reaction of (meth)acrylic acid and propylene oxide. Combined with a fixed-bed tubular reactor and a polymerization inhibitor, continuous production is achieved.
The catalyst exhibits low swelling rate and high pressure resistance in the propylene oxide system, preventing blockage. It also possesses moderate catalytic activity, high product selectivity, and enables continuous production, reducing labor intensity and environmental pollution.
Smart Images
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