Surfactants and surfactant compositions
CA 2475686 A1 · Owner: Croda International Plc · Inventors: Scovell, Edward George; Blease, Trevor Graham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Surfactant compounds are of the general formula (I): R1~(R2~)X1~CH~2CH(OH)CH~2(OA)~nOR3~ (I) where R1~ is hydrocarbyl; R2~ is hydrocarbyl; R2~ is H or hydrocarbyl; X1~ is a nitrogen containing group as defined, and R3~ is hydrocarbyl, and X1~ n and AO have defined meanings provided that at least one group R1~, R2~ or R3~ is or contains a C~6 to C~30 hydrocarbyl group. The compounds of the formula (I) can function as surfactants in agrochemical formulations particularly as emulsifiers, wetting , agents dispersants, thickeners or solubilisers and especially as adjuvants; , or as and, especially for amino oxide or quaternary compounds in personal , care formulations or as fabric …
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 February 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2025.
- 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.