Preparation of poly(arylene ether ketones)
CA 1311077 C · Owner: Jansons, Viktors · Inventors: Jansons, Viktors; Mazzanti, John B.; Moore, Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preparing a poly(arylene ether ketone) having a repeat unit, , comprising polymerizing a monomer system comprising (I) a monomer of the formula, X-?-R1-?-X and, (II) a monomer of the formula, ;, wherein R1 is p-phenylene m-phenylene, or 4,4'-biphenylene;, R2 is p-phenylene m-phenylene, biphenylene, or naphthylidene; and, X is a group displaceable under Friedel-Crafts polymerization conditions;, in a polymerization medium comprising (a) a Lewis base present in an amount between about 0.05 and about 2 equivalents per equivalent of acid halide groups present in the monomer system and (b) a Lewis acid present in an amount of at least one equivalent per equivalent of carbonyl groups …
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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 December 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 2009.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.