2,2,6,6-tetramethyl-4-piperidyl-substituted heterocyclic ring compound and polymers containing same same
CA 1134831 A · Owner: Carstab Corporation · Inventors: Molt, Kenneth R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compound is provided which is useful as a stabilizer for organic polymers. Organlc polymers containing the novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compound exhibit improved resistance to deterioration induced by light, by heat or by a combination of light and heat. The novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compound is prepared by a novel method comprising the step of reacting 2,2,6,6-tetramethyl-4-piperidyl substituted 1,2-aliphatic diamine with a monoaldehyde or dialdehyde.
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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, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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
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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.