Self-extinguishing polyolefinic compositions having improved flame resistance characteristics and high thermal stability
CA 1252245 A · Owner: Montedison S.P.A. · Inventors: Bertelli, Guido; Locatelli, Renato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Self-extinguishing compositions comprising: 1) from 35.5 to 87 % by weight of at least a polyolefin 2) from 5 to 20 % by weight of an ammonium polyphosphate 3) from 2 to 20 % by weight of polycarbonylpiperazine 4) from 2 to 20 % by weight of melamine phosphate 5) from 0.5 to 3 % by weight of titanium dioxide 6) from 0 to 1.5% by weight of a compound of formula R-SH wherein R is a radical of imidazole or of uracyl. Such compositions are useful in applications requiring compositions which possess self-extinguishing characteristics when exposed to flame and/or high temperatures.
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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 April 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 4, 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.