The starting product for PVP, namely N-vinylpyrrolidone, has been produced since 1939 in Ludwigshafen and since 1992 also at BASF's Geismar site in the United States.
对于吡咯烷酮,即开始生产n -乙烯基吡咯烷酮,自1939年在路德维希港自1992年以来生产和巴斯夫的盖斯马在美国网站还。
The starting product for PVP, namely N-vinylpyrrolidone, has been produced since 1939 in Ludwigshafen and since 1992 also at BASF's Geismar site in the United States.
对于吡咯烷酮,即开始生产n -乙烯基吡咯烷酮,自1939年在路德维希港自1992年以来生产和巴斯夫的盖斯马在美国网站还。
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