Branched polycarbonates containing 2,4,6-tris(4'-hydroxyaryl)-amino-s-triazines
CA 1296472 C · Owner: Enichem Polimeri S.P.A. · Inventors: Petri, Alberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
BRANCHED POLYCARBONATES CONTAINING 2,4,6-TRIS(4'-HYDROX- YARYL)-AMINO-S-TRIAZINES", Abstract of the Disclosure Branched, soluble, high-molecular-weight thermoplas, tic polycarbonates having improved properties and, in, particular, suitable to the fabrication by blow-moulding characterized by the presence in their structure of units deriving from the use in the synthesis of tris(4'-hydroxyaryl)-amino-S-triazines having the formula: wherein R1 and R2, equal to, or different from each other, indicate hydrogen, linear or branched C1-5 alkyl or halogen (in particular, chlorine and bromine).
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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- 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.