Piperidyl-triazine derivatives and their use as polymer stabilizers
CA 1323875 C · Owner: Toda, Toshimasa · Inventors: Naito, Satoru; Osawa, Hisayu; Toda, Toshimasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New compounds of formula (I): I, in which: R1 is hydrogen, alkyl, alkoxyalkyl carboxylic acyl or phenylalkyl, or an optionally substituted tetramethylpiperidyl group; R2 is hydrogen, alkyl, carboxylic acyl or phenylalkyl group; R3 is alkylene optionally interrupted by at least one oxygen atom; X is oxygen or -NR5- (in which R5 is hydrogen or alkyl): Y is -OCO-, -COO-, -CONH- or -OCONH-; n is 2 to 4: and, when n is 2 Z is alkylene, optionally interrupted by at least one oxygen sulfur or, aryl, cycloalkyl or heterocyclic group or, when n is 3, Z is alkanetriyl in which a carbon is optionally replaced by nitrogen or, when n is 4, Z is alkanetetrayl optionally interrupted by at least one oxygen …
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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 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
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Timeline
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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.