Polyethylene stabilizer compositions comprising compounds with piperidine groups and metal compounds
CA 1331664 C · Owner: Novartis Ag · Inventors: Masina, Franca
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyethylene stabilizer compositions comprising compounds with piperidine groups and, metal compounds" Abstract, A polyethylene stabilizer composition comprises: A) one or more compounds with piperidine groups of the formula (I) or (Ia), or , in which R is hydrogen C1-C4-alkyl, allyl, benzyl, acetyl, acryloyl 2-hydroxyethyl or 2-hydroxypropyl and, B) one or more metal compounds such as oxides and hydroxides of Al, Mg and Zn and, if appropriate, one or more salts of Al, Ba, Ca, Mg, Sr and Zn with C1-C22-carboxylic acids
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 August 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 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.