Process for preparing a polysiloxane
CA 1073918 A · Owner: General Electric Company · Inventors: Moeller, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing diorgano polysiloxanes wherein from about 0.1 to 1% of the organo groups are vinyl comprises reacting in emulsion a mixture of the corresponding cyclic tetra siloxanes with an alkyl benzene sulfonic acid and neutralizing the product with an alkanolamine. The neutralized emulsion can be further reacted with a polyorganosiloxane having at least two silhydrogen groups per molecule in the presence of a platinum catalyst, and has particular utility in providing a non-adherent coating.
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 March 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
- 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.