Compositions of polyphenylene oxides and thermoplastic polymers
CA 1332852 C · Owner: Allied-Signal Inc. · Inventors: Vanbuskirk, Bruce; Akkapeddi, Murali Krishna; Brown, Alan Curtis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a melt blended composition of the reaction product of about 70 to 99.99 percent by weight polyphenylene oxide, and about 0.01 to 30 percent by weight of a substituted olefin having the formula:, wherein one to two of R1, R2 R3 and R4 are, moieties containing reactive groups selected from carboxylic acid, acid anhydride, acid amide imido, carboxylic ester, amino, hydroxyl epoxy, group, oxazoline, oxazolone, oxazine oxazinone, isocyanate, carbamate, carbamoyl lactam acyl lactam, and mixtures, and derivatives thereof and wherein the remaining two to, three of R1 R2, R3 and R4 are H or a hydrocarbon, radical of from 1 to about 20 carbon atoms; and polyolefin. …
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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 November 1, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 1, 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.