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Processes for Separating Crude Acrylic Acids and Acrylates Comprising A Michael Addition Product
Processes for Separating Crude Acrylic Acids and Acrylates Comprising A Michael Addition Product
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机译:分离包含迈克尔加成产物的粗丙烯酸和丙烯酸酯的方法
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摘要
In one embodiment, the present invention is directed to a process for producing an acrylate product. The process comprises the step of reacting, optionally in a reaction zone, a reaction mixture comprising an alkanoic acid and an alkylenating agent under conditions effective to form a crude acrylate product. The crude acrylate product comprises acrylate product and acetic acid. The process further comprises the step of reacting, in a separation zone, at least a portion of the acrylate product and at least a portion of the acetic acid to form an intermediate acrylate product. The intermediate acrylate product comprises a Michael addition by-product, e.g., 3-acetoxypropionic acid and/or 3-acetoxypropanoic acid. The process further comprises the step of separating at least a portion of the intermediate acrylate product to form a by-product stream and a purified acrylate product stream.
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