The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 1976
Filed:
Dec. 10, 1974
Alexander Ohorodnik, Erftstadt Liblar, DT;
Klaus Gehrmann, Erfstadt Lechenich, DT;
Gunter Legutke, Bruhl, DT;
Hermann Vierling, Hurth, DT;
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
Monovinylacetylene is produced by an improved process, wherein acetylene is introduced at temperatures within the range 40.degree. and 100.degree. C and under acetylene gas pressures within the range 0.01 and 10 atmospheres (gauge) into a Nieuwland catalyst type solution being an aqueous copper(I) chloride solution in hydrochloric acid, which is used in admixture with between 0.1 and 10 weight% of an alkali metal salt of an aminocarboxylic acid or of an aminosulfonic acid, and wherein acetylene is introduced into the catalyst solution jointly and simultaneously with an inert organic solvent extractant and stripping agent for the resulting monovinylacetylene, the solvent being in vapor form and being continuously passed through the catalyst solution so as to continually strip off monovinylacetylene originating from dimerized acetylene.