Polymeric compounds containing piperidine groups
CA 1252596 A · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Borzatta, Valerio; Cantatore, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel polymeric compounds containing piperidine groups Abstract of the Disclosure, Novel polymeric compounds of the repeating structural unit (I) (I), in which R1 is hydrogen, O; CN, cyanomethyl C1-C12-alkyl, C3-C12-, alkenyl or C3-C12-alkynyl subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom C7-C12-aralkyl, C1-C12-acyl, 2,3-epoxypropyl or C2-C6-alkyl substituted by OH, R2 is C2-C18-alkylene, C4-C18-alkylene substituted by 1 or 2 oxygen or nitrogen atoms in the chain C5-C18-cyclo-, alkylene, C6-C18-arylene or C8-C18-aralkylene R3 is as defined for, R2 or is a group of the formula (II) or (III) (II) (III), in which R4 is hydrogen or …
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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 April 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.