Fire-retarding thermoplastic resin with hydrotalcite
CA 1065083 A · Owner: Kyowa Chemical Industry Co. · Inventors: Miyata, Shigeo; Hirose, Toru; Iizima, Noriko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a fire-retarding thermoplastic resin composition comprising (A) a thermoplastic resin, and (B) a fire-retarding amount of a hydrotalcite having a specific surface area determined by the BET method, of not more than 30 m2/g the hydrotalcite being uncoated, or coated with an aqueous solution of an anionic surface active agent in a concentration of not more than 20 millimoles/liter in a thickness larger than a monolayer but up to a triple layer. The composition is non-toxic and does not generate hazardous or poisonous gas an heat mould and it affords moulded articles, having a good appearance and without the disadvantage of corroding fabricating apparatus and other metallic …
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 October 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 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.