Flame-proof polycarbonates containing units deriving from halogenated macrocyclic compounds
CA 1330095 C · Owner: Enichem Tecnoresine 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
1. "FLAME-PROOF POLYCARBONATES CONTAINING UNITS DERIVING FROM HALOGENATED MACROCYCLIC COMPOUNDS" Abstract, Thermoplastic, branched, high-molecular-weight polycarbonates endowed with flame-proof properties (selfextinguishing properties) are characterized in that they contain in their macromolecule carbonate units units, deriving from a di-hydroxy-aromatic compound having the formula:, (I), wherein:, R is a single bond; or R is a linear or branched, either substituted or non-substituted, alkylene radical of from 1 to 5 carbon atoms; or, R is selected from the group consisting of O S, SO2, CO;, X, Y which may be either equal to or different from, each other, are either H or CH3; m, n which may …
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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 June 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 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.