Process for the manufacture of acetic acid ethyl ester
CA 1094101 A · Owner: Hoechst Aktiengesellschaft · Inventors: Arpe, Hans-Jurgen; Leupold, Ernst I.; Renken, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the Manufacture of Acetic Acid Ethyl Ester Abstract of the Disclosure:, Acetic acid ethyl ester is prepared by passing ethylene over a fixed-bed catalyst composed of silicon dioxide which, has a surface from 50 to 200 m2/g and which is impregnated with H2SO4, diethylsulfate or ethylsulfuric acid or mixtures of these compounds, with periodically alternating quantities of acetic acid, at a temperature from 130 to 170°C the, acid concentration, calculated on ethylene varying constant-, ly over a range from 0,01 to 40 % by mole,
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.