申请人:——
公开号:US20030088123A1
公开(公告)日:2003-05-08
The invention relates to a process for preparing sulphuric methacrylamide from acetone cyanohydrin.
This process for preparing sulphuric methacrylamide comprises:
a) a mixing step, in which acetone cyanohydrin is mixed with sulphuric acid;
b) a stoving step;
c) a step of adding further acetone cyanohydrin;
d) another stoving step;
e) optionally, one or more additional step(s) of further addition of acetone cyanohydrin followed by an additional stoving step; and
f) optionally, a final stoving step.
It is characterized in that sulphur trioxide is also introduced in step c) and/or just after this step c) and/or, where appropriate, in one or more of the additional steps of further addition e) and/or just after this or these step(s) e).
The invention also relates to a device for carrying out this process.
本发明涉及一种从丙酮腈制备硫酸甲基丙烯酰胺的方法。该制备硫酸甲基丙烯酰胺的方法包括:a)混合步骤,其中将丙酮腈与硫酸混合;b)加热步骤;c)进一步添加丙酮腈的步骤;d)另一次加热步骤;e)可选地,进一步添加丙酮腈的一个或多个额外步骤,随后是额外的加热步骤;以及f)可选地,最后的加热步骤。其特征在于,在步骤c)中和/或仅在此步骤c)之后和/或在进一步添加e)的一个或多个额外步骤中,硫三氧化物也被引入。本发明还涉及一种用于执行此方法的装置。