Smoke-and flame-retardant styrene/acrylonitrile/methyl methacrylate interpolymeric molding compositions
CA 1067240 A · Owner: Monsanto Company · Inventors: Deets, Gary L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are polyblend molding compositions which comprise (A) poly(styrene/acrylonitrile/methylmethacrylate) matrix polymer; (B) polychloroprene rubber which is grafted with monomers of the type used to prepare the matrix; (C) a metal oxide; and (D) smoke suppressants. Specimens molded from these polyblends have a UL-94 rating of at least V-1 and a smoke level of less than 360 Dm Flaming as measured using the NBS smoke test.
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 November 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 27, 1996.
- 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.