Emulsions
CA 2375731 A1 · Owner: Imperial Chemical Industries Plc · Inventors: Bouvy, Alain; Bevinakatti, Hanamanthsa Shankarsa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous emulsion of a resin which includes as an emulsifier at least one compound of the formula (I): R1-CO-NR2R3 wherein R1 is a polyunsaturated hydrocarbyl group; R2 is a polyhydroxy hydrocarbyl radical; and R3 is hydrogen, a hydrocarbyl, particularly alkyl group, a hydroxy or , hydrocarbyloxy substituted hydrocarbyl particularly hydroxy or alkoxy , substituted alkyl or is a group as defined for R2. The resin is preferably an alkyd resin, and the emulsions are particularly useful for incorporating into paints.
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
- Filed June 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2022.
- 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.