Polyester composition improved in fluidity
CA 1261996 A · Owner: Polyplastics Co. Ltd. · Inventors: Sugita, Michiyuki; 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 resin composition which comprises (A) polytetramethylene terephthalate and (B) an aromatic polybasic acid ester of the formula (1): ...(1), wherein X represents -COOR (R being an alkyl group havirg 1 to 12 carbon atoms), n represents an integer of 3 to 4 and the alkyl groups R in X may be the same as or different from one another. Such a composition has improved fluidity and is suitable for thin walled moldings or articles of complicated shapes in engineering, plastics such as for electronic components.
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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.