Alkylglycol alkoxylates or alkyldiglycol alkoxylates, mixtures thereof with tensides and their use
CA 2472966 A1 · Owner: Gumbel, Helmut · Inventors: Tropsch, Jurgen; Oetter, Gunter; Seelmann-Eggebert, Hans-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to alkylglycol alkoxylates and alkyldiglycol alkoxylates that are obtainable by alkoxylating C4-8 alkylglycols or diglycols with C2-5 alkoxides up to an average alkoxylation degree of 1 to 8 based on the C4-, 8alkylglycols or diglycols. The invention further relates to mixtures from C2- 5 alkoxylates of C4-8 alkylgycols or -diglycols that have an average alkoxylation degree of 1 to 8 and tensides that have an interfacial tension of less than 45 mN/m at 20 ~C when dissolved in an amount of 5 g/l of water and/or to diyhdroxyalkins or derivatives thereof.
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 January 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 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.