Process for producing high purity butene-1 with a low energy consumption
CA 1232617 A · Owner: Snamprogetti S.P.A. · Inventors: De Maglie, Bruno; Comiotto, Renzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A LOW ENERGY CONSUMPTION", Abstract, High purity butene-1 in particular polymerisation, grade butene-1 is obtained by means of the two-stage, fractionation of a C4 hydrocarbon stream which contains it, substantially free from butadiene. The first stage of the fractionation process allows practically all the isobutane contained in the C4 batch to be separated as the top stream. The bottom phase of the first stage of fractionstion is supplied to the second stage of fractionation thus obtaining high purity butene-1 as the top fraction and the remaining components as the bottom phase. A characteristic of the process according to the in vention is that the vapours of butene-1 obtained as the top …
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 February 9, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2005.
- 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.