Stable, pourable aqueous bleaching compositions comprising solid organicperoxy acid and at least two polymers
CA 1340308 C · Owner: Torenbeek, Reinder · Inventors: Torenbeek, Reinder; Ploumen, Jan Joseph Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This disclosure relates to pourable bleaching compositions comprising a solid substantially water-insoluble organic peroxy acid stably suspended in an aqueous medium containing at least two polymers wherein the first polymer is one or more natural gums and the second polymer is selected from the group consisting of polyvinyl alcohol, one or more cellulose derivatives and mixtures thereof. The bleaching composition also may contain an electrolyte. The preferred organic peroxy acid is 1,12-diperoxydodecanedioic acid. The preferred first polymer is xanthan gum. The second polymer is preferably a cellulose ether.
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
- Granted January 12, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2016.
- 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.