Process for hydrogenating functionalized polymer and products thereof
CA 1333206 C · Owner: Shell Canada Limited · Inventors: Pottick, Lorelle Ann; Goodwin, Dan Earl; Willis, Carl Lesley
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a hydrogenated and acidic functionalized polymer from a polymer initially containing either ethylenic unsaturation or both aromatic and ethylenic unsaturation comprising the steps of:, (a) incorporating one or more precursors of an acidic functional group into the starting polymer;, (b) hydrogenating the product from step (a) so as to convert at least a portion of the ethylenic unsaturation initially contained in said polymer;, (c) converting at least a portion of the precursors incorporated in the hydrogenated polymer from step (b) to the corresponding acidic functional group; and, (d) recovering a product containing acidic functionality which is at least partially …
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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 November 22, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 22, 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.