| 摘要 |
A catalyst for converting acetylene to monovinyl acetylene consists of two phases, firstly a solution of Cu2Cl2 and a primary or secondary amine hydrochloride containing not more than six carbon atoms, in an anhydrous liquid carboxylic acid amide containing not more than six carbon atoms, the amide amounting to less than 30% by weight of the solution and secondly one or more monoalkyl ethers of monoethylene glycol containing six to ten carbon atoms in the alkyl radical. The preferred solvent is dimethyl formamide but also mentioned are formamide and acetamide. The preferred amine hydrochloride is CH3NH2.HCl. Examples are given.ALSO:A catalyst for converting acetylene to monovinylacetylene consists of two phases, firstly a solution of Cu2 Cl2 and a primary or secondary amine hydrochloride containing not more than six carbon atoms, in an anhydruous liquid carboxylic acid amide containing not more than six carbon atoms, the amide amounting to less than 30% by weight of the solution and secondly one or more monoalkyl ethers of monoethylene glycol containing six to ten carbon atoms in the alkyl radical. The preferred solvent is dimethylformamide but also mentioned are formamide and acetamide. The preferred amine hydrochloride is CH3 NH2 HCl. Specified alkyl ethers of ethylene glycol are 2-ethyl hexyl, n-octyl, n-hexyl, trimethylhexyl or isodecyl. Examples are given. Specifications 793,748, 810,761, 846,155, 913,998, and U.S.A. Specifications 2,914,589 and 2,924,631 are referred to. |
