Salts of alkenylsuccinic monoamides and their use as anticorrosive agents and emulsifiers for metal-working oils
CA 2045205 A1 · Owner: Kremer, Gernot · Inventors: Kremer, Gernot; Lorke, Horst; Ritschel, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Salts of alkenylsuccinic monoamides and their use as anticorrosive agents and emulsifiers for metal-working oils, The invention relates to alkenylsuccinic monoamides of the formulae, or , in which R is C13-C30-alkenyl and Me+ is an alkali metal ion, a proton or an ammonium ion of the formula +NHR1R2R3 and R1, R2 and R3 are identical or different and are hydrogen, 2-hydroxyethyl or 2-hydroxypropyl. The invention further relates to the use of these alkenylsuccinic monoamides as anticorrosive agents in waterand/or mineral oil-containing formulations if appro-, priate together with ethoxylates and/or fatty acid alkanolamides, and water- and/or mineral oil-containing …
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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
- Filed June 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 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
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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.