A kind of synthetic method of epoxy-terminated butanol polyoxyethylene polyoxypropylene ether

Abstract

The invention relates to a method for synthesizing epoxy-terminated butanol polyoxyethylene polyoxypropylene ether, and belongs to the technical field of organic compound synthesis. will WO 3 / ZrO 2 The catalyst is added to the butanol polyoxyethylene polyoxypropylene ether, and epichlorohydrin is slowly added dropwise under the protection of nitrogen. After the reaction is completed, the catalyst is recovered by filtration, and the epichlorohydrin is recovered by distillation under reduced pressure to obtain the intermediate of the chlorohydrin ether. The product is added with solid alkali and quaternary ammonium salt catalyst, and under nitrogen protection, after the reaction is filtered and demineralized, neutralized by adding neutralizer, and then adding adsorbent, and then refining. The invention is applied to the synthesis of epoxy-terminated polyoxyethylene polyoxypropylene ether, which not only effectively recovers and recycles the catalyst for more than 15 times, avoids the impact of the strong acid catalyst on equipment and operating environment, but also realizes the end-capping rate. The balance of color and luster not only imparts high reactivity, but also ensures the quality index of the finished product.

Description

technical field [0001] The invention relates to a method for synthesizing epoxy-terminated butanol polyoxyethylene polyoxypropylene ether, which belongs to the technical field of organic compound synthesis. Background technique [0002] The molecule of epoxy-terminated butanol polyoxyethylene polyoxypropylene ether contains epoxy-based active groups, which has good reactivity and is mainly used in epoxy resin diluents, catalysts, cross-linking agents and chain transfer agents , chloride stabilizer, fabric finishing agent and modified silicone oil, etc., are important intermediates for the synthesis of various surfactants and important polymerization intermediates. [0003] At present, there are two main methods of epoxy-terminated polyether: [0004] The first is a one-step method, that is, a phase transfer method: polyether and epichlorohydrin are used as raw materials, and the target product is directly generated by reacting in the presence of a phase transfer catalyst an...

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Problems solved by technology

The active components of the catalyst used in the reported patent, boron trifluoride and concentrated sulfuric acid, will be lost as the reaction progresses, so the catalyst cannot be recovered. These lost catalysts will cause serious corrosion to the equipment, and the cycle life of the catalyst is limited. Moreover, the reported patents are mainly end-capped single molecules, and there is no epoxy group-terminated polyether with long chain and large molecular weight.

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