Smoke retardant vinyl chloride and vinylidene chloride polymer compositions
CA 1087783 A · Owner: B.F. Goodrich Company (The) · Inventors: Dickens, Elmer D. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Smoke retardant vinyl chloride and vinylidene chloride polymer compositions are obtained by including therein a synergistic mixture of (A) at least one nickel compound selected from the group consisting of NiCrO4 NiMoO4, Ni2O3, Mi3(PO4)2, nickel metal nickel formate, and nickel oxalate and (B) at least one vanadium compound selected from the group consisting of LaVO4 Na3VO4, VB2, VN, V2O3 and vanadium metal. Substantial smoke retardation is also obtained by including the above nickel compounds or vanadium compounds individually in the vinyl chloride or vinylidene chloride polymer compositions except for, vanadium metal. Hydrates of the additive compounds may also be used.
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 October 14, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 1997.
- 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.