Method for the preparation of a styrene-based polymer and a method for shaping the same
CA 1300310 C · Owner: Suzuki, Masakazu · Inventors: Suzuki, Masakazu; Nakano, Akikazu; Kuramoto, Masahiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An amorphous and excellently moldable styrene-based polymer having a syndiotactic structure can be obtained when a styrenebased polymer having a substantially syndiotactic structure . is dissolved in a solvent followed by separation and recovery of the polymer from the solution or melt thereof is quenched. Shaping the same gives various kinds of shaped articles having excellent mechanical strengths and heat resistance. Physical properties of the shaped articles can be further improved by a modification treatment.
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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 May 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 2009.
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Timeline
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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.