Organofunctional betaine modified siloxanes
CA 1332241 C · Owner: Snow, Steven A. · Inventors: Owen, Michael J.; Snow, Steven A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel compositions of organofunctional betaine modified siloxanes having the general formula:, and, wherein each Ra and Rb are lower alkyl groups Rc and Rd are, lower alkylene groups, x ranges from 1-4 and z ranges from 1-4. The compositions of the invention exhibit surfactant properties in that they are effective in lowering the surface tension of water. The invention also regards the process by which these modified siloxanes are made.
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 October 4, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 4, 2011.
- 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.