会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明申请
    • METHOD OF PREPARING ACRYLIC ACID AND METHACRYLIC ACID
    • 用于生产丙烯酸和甲基丙烯酸
    • WO1998001411A2
    • 1998-01-15
    • PCT/EP1997003629
    • 1997-07-09
    • BASF AKTIENGESELLSCHAFTMACHHAMMER, OttoNESTLER, Gerhard
    • BASF AKTIENGESELLSCHAFT
    • C07C51/00
    • C07C51/48Y02P20/582C07C57/04
    • A method of preparing acrylic acid or methacrylic acid comprises the following steps: (a) preparation of a gaseous reaction mixture which contains acrylic acid or methacrylic acid, essentially having the composition of a reaction mixture of catalytic gas-phase oxidation of C3/C4 alkanes, alkenes, alkanols and/or alkanals and/or precursors thereof to form acrylic acid or methacrylic acid, (b) absorption of the reaction product with a solvent mixture consisting of at least one lactame dissolved in at least one polar organic solvent, and (c) distillation of the reaction product-bearing solvent mixture to obtain a crude acrylic acid or crude methacrylic acid and the solvent mixture.
    • (a)产生的气态,含有丙烯酸或甲基丙烯酸的反应产物,它基本上C3- / C4烷烃的催化气相氧化的反应混合物的组成,链烯烃,链烷醇和:一种生产丙烯酸或甲基丙烯酸,包括以下步骤的方法 /或-alkanals和/或其前体,以形成丙烯酸或甲基丙烯酸,与(b)用至少一种内酰胺的至少一种极性有机溶剂的溶剂混合物,和(c)蒸馏所述加载的反应产物的溶剂混合物以获得粗达到这种对反应产物的吸收 丙烯酸或粗甲基丙烯酸和溶剂混合物的。