Mixtures of fatty amines from polyoxyalkyleneamines
CA 2022410 A1 · Owner: Naylor, Carter G. · Inventors: Lin, Jiang-Jen; Naylor, Carter G.; Speranza, George P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
MIXTURES OF FATTY AMINES FROM POLYOXYALKYLENEAMINES (D#80,706-F), Abstract of the Disclosure Novel fatty amines, amides and salts thereof may be made from the reaction of polyoxyalkylenepolyamine residues with fatty acids and/or fatty acid esters under relatively mild reaction conditions in the absence of a catalyst. Remarkably the residues or bottoms products from the synthesis of polyoxyalkylenepolyamines, such as triethylene glycol diamine and tetraethylene glycol diamine, also known as JEFFAMINE? EDR amines, may be reacted with the fatty acids and/or fatty acid esters to give materials useful in corrosion inhibitors pigment wetting agents, mineral flotation and flocculation aids, …
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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 July 31, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2012.
- 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.