Continuous process for producing alkylene glycols from alkylene carbonates
CA 1113123 A · Owner: Union Carbide Corporation · Inventors: Taylor, Glenn A.; Foster, Robert D.; Maliszewski, Thomas A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous process for hydrolyzing alkylene carbonates according to specific procedure whereby the alkylene glycol obtained is essentially free of polymeric glycols and contains minimum amounts of dimeric glycols. S P E C I F I C A T I O N
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 November 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 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.