Process for manufacture of 3,5-ditert. butyl-4-hydroxybenzaldehyde from 3,5-ditert.butyl-4-hydroxybenzyl alcohol
CA 1054635 A · Owner: Gulf Oil Corporation · Inventors: Cahoy, Roger P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PROCESS FOR MANUFACTURE OF 3,5-DITERT.BUTYL-4- HYDROXYBENZALDEHYDE FROM 3,5-DITERT.BUTYL-4- HYDROXYLBENZYL ALCOHOL, Abstract of the Disclosure 3,5-ditert.butyl-4-hydroxybenzyl alcohol is converted to the corresponding aldehyde by reaction with hexamethylenetetramine in aqueous acetic acid medium.
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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
- 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.