Flame-retarding, expandable molding compositions of styrene polymers
CA 1095650 A · Owner: Hoechst Aktiengesellschaft · Inventors: Noetzel, Siegfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: There are described expandable molding compositions of styrene polymers containing 1,2,3,4,5,6-hexabromohexene- 1 or 1,2,3,4,5,6-hexabromohexene-3 or mixtures thereof as the flame-retarding agent, and showing a favorable combination of improved properties, especially high pre-foaming velocity, good welding, rapid mold-releasing and good flame-retardance.
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 February 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 10, 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.