Flameproof thermoplastic molding material
CA 1107899 A · Owner: Basf Aktiengesellschaft · Inventors: Hagen, Helmut; Naarmann, Herbert; Penzien, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flameproof thermoplastic molding material based on a styrene polymer and containing from 0.05 to 5 percent by weight of an organic bromine compound as the flameproofing agent, with or without a blowing agent, wherein the bromine compound contains a heterocyclic ring, comprising the group ?=?-CBr3, in its molecule and, is heat-stable up to at least 150°C. The preferred bromine compound has the formula, . The molding materials may be used for the manufacture of self-extinguishing moldings, eg. foam moldings.
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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
- 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.