Non-flammable polybutylene terephthalate composition
CA 1259734 A · Owner: Polyplastics Co. Ltd. · Inventors: Takahashi, Katsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a polybutylene terephthalate (PBT) composition which comprises (A) polybutylene terephthalate (B) a flame retardant, (C) a flame-retarding assistant which causes substantially no deterioration of the mechanical properties of the PBT and which is antimony trioxide having an average particle size of 1 micron or larger, and (D) a polycarbonate. Such compositions have improved melt stability and flame retardance and are suitable as engineering plastics for making for example, electronic parts.
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 September 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 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.