Aryloxy-alkoxy substituted polyphosphazenes
CA 1254346 A · Owner: Ethyl Corporation · Inventors: Pettigrew, Francis A.; Penton, Harold R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyphosphazenes containing 20-80 mole percent phenoxy 20-80 mole percent alkylphenoxy and 2-30 mole percent alkoxy substituents possess low glass transition temperature while still exhibiting good smoke values in standard tests. The cured polyphosphazene compositions of this invention can be used in all applications which require a non-burning low-smoke, flexible polymer. One main application is as wire and cable electrical insulation in which the compounded polyphosphazene is extruded around the wire and cable and then heated or irradiated to cure the coating.
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 May 16, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 16, 2006.
- 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.