P-sulphophenyl carbonates and detergent compositions and detergent additives containing these compounds
CA 1261866 A · Owner: Akzo N.V. · Inventors: Meijer, John; Nollet, Andreas J.H.; Overkamp, Johannes W.A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This disclosure relates to novel compounds of the class of the p-sulphophenyl carbonates, viz. mono-p-sulphophenyl carbonates derived from ethoxylated alcohols and bis-p-sulphophenyl dicarbonates derived from alkane diols and poly(ethylene glycols). The novel compounds are efficient bleaching activators. The disclosure also relates to detergent additives and detergent compositions wherein the novel compounds are contained.
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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.