Bleach activators with improved solubility
CA 2391475 A1 · Owner: The Procter & Gamble Company · Inventors: Brown, Angelica Damaris; Preissner, Karl Matthew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bleach activator particle for use in detergent compositions comprising a , bleach activator having the general formula (I): wherein R is an alkyl group containing from about 5 to about 18 carbon atoms wherein the longest linear alkyl chain extending from and including the carbonyl carbon contains from about 6 to about 10 carbon atoms and L is leaving group the conjugate acid of , which has a pKa in the range of from about 4 to about 13 preferably from , about 6 to about 11, most preferably from about 8 to about 11; and a binder material comprising from about 0.1 % to about 15 % by weight of the particle, of an inorganic salt capable of absorbing water of hydration; or a binder material …
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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 December 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 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.