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.

CN122277792APending Publication Date: 2026-06-26WANHUA CHEM GRP CO LTD
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Patent Information

Application Number
CN202411914846.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

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.

Method used

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.

Benefits of technology

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.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This invention discloses a fluorinated weakly basic anion exchange resin catalyst and its preparation method, as well as a method for preparing hydroxypropyl methacrylate. The fluorinated weakly basic anion exchange resin catalyst of this invention is a solid catalyst capable of catalyzing the ring-opening addition reaction of (meth)acrylic acid and propylene oxide. It has low swelling ratio and high pressure resistance in the propylene oxide system. Using this catalyst in the preparation of hydroxypropyl methacrylate enables continuous production of hydroxypropyl methacrylate and has advantages such as the catalyst not easily pulverizing and clogging the reactor.
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Citation Information

Patent Citations

  • Preparing technology of hydroxypropyl methacrylate

    CN102584580A

  • Synthetic method of hydroxypropyl methacrylate

    CN103288641A

  • Continuous production method of hydroxypropyl methacrylate

    CN113861025A