Polyarylene thioether of high crystallizing rate and a process for producing the same
CA 1290891 C · Owner: Katto, Takayuki · Inventors: Ichikawa, Yukio; Shiiki, Zenya; Katto, Takayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a polyarylene thioether of high crystallizing rate having a necessary time for 50% crystallization of not more than 50 seconds upon crystallization of a molten polymer at 250°C as well, as a production process therefor. The polyarylene of the present invention can be used as a heat resistant a chemical, resistant or a flame resistant thermoplastic resin in the industrial fields such as electric, electronics automobiles, aircrafts, precision instruments and chemicals.
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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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.