PROCESS FOR THE PRODUCTION OF 3-ALKYL-6-METHYL-.beta.- RESORCYCLIC ACID ESTERS
CA 1190560 A · Owner: Degussa-Huls Aktiengesellschaft · Inventors: Schmidt, Hans-Georg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
3-Alkyl-6-methyl-.beta.-resorcylic acid esters of the formula, I, wherein R1 and R2 denote the same or different alkyl groups with 1 to 10 carbon atoms are produced by reacting with a base of .alpha.-pyrones of the formula II, wherein R1 and R2 have the indicated meaning. .beta.-resorcylic acid esters of formula I are perfumes with oak moss character.
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 July 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2002.
- 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.