Lubricant
CA 1104591 A · Owner: Ethyl Corporation · Inventors: Shubkin, Ronald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A synthetic hydrocarbon product particularly suitable as a constituent of crankcase lubricant oils for internal combustion engines is made by oligomerizing C12-18 alpha olefins, preferably high in tetradecene until the reaction mixture, excluding monomer is pre-, dominantly dimers, then distilling off the monomer and hydrogenating. The feed alpha olefin stock is to have an average carbon number of at least 13. Novel hydrocarbons e.g. 13,14-dimethyl-hexacosane, are constituents of the product. The oligomerization is carried out in the presence of a Friedel-Crafts catalyst, boron trifluoride promoted with water being especially preferred.
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 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.