Process for producing styrene-based polymers
CA 1331670 C · Owner: Imabayashi, Hideki · Inventors: Yamamoto, Koji; Imabayashi, Hideki; Izumi, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for continuously producing a styrene-based polymer having high syndiotactic configuration which comprises continuously introducing a styrene-based monomer into a reactor and polymerizing it while adjusting the amount of the polymer produced in the reactor to at least 10% by weight of the total amount of the unreacted styrene-based monomer and the polymer. According to the present invention the styrene-based, polymer with high syndiotactic configuration is effectively produced with small power consumption.
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 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 2011.
- 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.