Bleach activator granules
CA 1102966 A · Owner: Unilever Limited · Inventors: Kirchert, Klaus; Green, Robin J.; Oesch, Johann U.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, Bleach activator granules for use in or with washing and bleaching compositions having a size of from 0.2 mm to 2.5 mm and being composed of:, 55% to 90% by weight of at least one bleach activator for percompounds having a titre in the peracid formation test of at least 1.5 ml 0.1N sodium thiosulphate; and, 10% to 45% by weight of a binding material comprising essentially a mixture of at least two hydratable inorganic salts. The first hydratable salt is either sodium triphosphate borax, or mixtures thereof, the second hydratable salt being a salt having solubility in water of more than 30 grams anhydrous salt per 100 ml at 60°C, a pH of around 7 up to about 11 for 10% …
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 June 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 1998.
- 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.