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
    • 1. 发明授权
    • Process for the preparation of vinylesters
    • 制备乙烯基酯的方法
    • US06307095B1
    • 2001-10-23
    • US08950427
    • 1997-10-15
    • Johannes Jacobus KeijsperJean-Paul LangeBrendan Dermot Murray
    • Johannes Jacobus KeijsperJean-Paul LangeBrendan Dermot Murray
    • C07C6704
    • C07C67/04C07C69/01C07C69/24
    • A process for the catalytic conversion of carboxylic acids with acetylene to vinylesters. At least one, preferably saturated, secondary carboxylic ester and/or at least one, preferably tertiary carboxylic acid is (are) passed in the gas phase together with acetylene at an elevated temperature, preferably in the range of from 150 to 400° C., over a catalyst comprising zinc and a solid inert oxidic carrier, preferably alumina. The carboxylic acids have advantageously the following formula: in which R1 is H or an alkyl group and R2 and R3 are alkyl groups, the total number of C-atoms of R1+R2+R3 being in the range of from 3 to 18. These vinylesters have a good stability and are particularly useful components in emulsion paints and as modifiers in alkyd and epoxy resin.
    • 将羧酸与乙炔催化转化成乙烯基酯的方法。在高温下,将至少一种优选饱和的仲羧酸酯和/或至少一种优选叔羧酸与乙炔一起通入气相中 温度,优选在150-400℃的范围内,在包含锌和固体惰性氧化载体的催化剂,优选氧化铝中。羧酸有利地具有下式:其中R 1是H或烷基,R 2 并且R 3是烷基,R 1 + R 2 + R 3的C原子总数在3至18的范围内。这些乙烯基酯具有良好的稳定性,并且在乳液漆中和作为醇酸树脂和环氧树脂中的改性剂是特别有用的组分 树脂。