Salt free phosphobetaines
CA 1232279 A · Owner: Mona Industries, Inc. · Inventors: Corti, Miguel; Mayhew, Raymond L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with novel phosphobetaine compounds having the general formula: wherein A is selected from OH, OM and OYR B is selected, from OH and OM, R is an imidazoline reactant moiety of the formula:, wherein R3 is alkyl, alkenyl alkoxy, hydroxyalkyl or, hydroxyalkenyl of 2 to 20 carbon atoms each or aryl or alkylaryl or cycloaliphatic of up to 20 carbon atoms R1 and R2 are individually selected from hydrogen propionic acid, propionitrile, propionamide propionate, esters of C1-C12 alkyl, alkylaryl or alkylcycloaliphatic or alkali metal or alkaline earth metal salts or amine salts of propionic acid with the proviso that at least one of R1 and R2 must be a propionate …
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 February 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2005.
- 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.