Fatty alcohol alkoxylate
CA 2077650 C · Owner: Orica Australia Pty Ltd · Inventors: Cook, Iain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of formula (I) where R, which may be the same or different is , selected from at least one of hydrogen methyl, ethyl and phenyl, at least one R on each -OCHR-CHR- unit being hydrogen; where m is an integer selected from 1-100; where n is an integer selected from 8 and 9. The preferred process of preparation is by the reaction of alkylene oxide with linoleyl alcohol in the presence of a catalyst which is a Bronsted base. The compounds are useful as reactive surfactants in aqueous emulsion polymerisation processes.
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 November 23, 1990 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 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
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.