Imidazoline promoter overbased calcium sulfonates
CA 1338540 C · Owner: Muir, Ronald J. · Inventors: Muir, Ronald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition and process for preparing an overbased calcium sulfonate in, which a specific class of compounds is employed as promoters in making overbasedcalcium sulfonates. These promoters give an enhanced efficiency of the conversion of lime to an oil-soluble dispersion of calcium carbonate. Low post-carbonation solids and high TBN (total base number of alkaline reserve) result from this improved promoter system. The process for preparing highly basic calcium sulfonate includes contacting an acidic gas at a temperature between 60°F TO 130°F with a mixture, of a sulfonic acid or calcium salt thereof a hydrocarbon solvent, calcium hydroxide a small quantity of co-promoter methanol and up …
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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 August 20, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2013.
- 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.