Process for preparing sulphonated organosilicon compounds
CA 1316539 C · Owner: Dow Corning Limited · Inventors: Renauld, Franck Andre Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Organosilanes and organosiloxanes characterised by the group -SiQSO3-Na+ in which Q is alkylene or phenylene are prepared by reacting the corresponding mercaptopropylsubstituted silanes and siloxanes with sodium permanganate. The products have surface active properties and are useful as emulsifying agents and for reducing the surface tension of aqueous media.
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 April 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 20, 2010.
- 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.