Preparation of overbased magnesium sulfonates
CA 1092341 A · Owner: Witco Chemical Corporation · Inventors: Cease, Vincent J.; Kirk, George R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Process of preparation of fluid overbased particularly, highly overbased, magnesium-containing colloidal dispersions wherein a partial mixture is formed of an oil-soluble sulfonic acid as such or admixed with an oil-soluble aliphatic hydrocarbon monocarboxylic acid, a volatile aliphatic or aromatic or chlorinated hydrocarbon solvent, a special grade or readily reactive form of magnesium oxide for neutralization and overbasing purposes, and an alcohol, carbonating the mixture with a controlled limited amount of carbon dioxide in the presence, of an added activator adding a nonvolatile diluent oil, stabilizing the colloidal dispersion, removing undesired sediment …
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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 December 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 1997.
- 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.