Polymeric alloy of coil-like heterocyclic polymer and rod-like aromatic heterocyclic polymer
CA 1136316 A · Owner: United States Of America, Represented By The Secretary, U.S. Department Of Commerce · Inventors: Husman, George E.; Arnold, Fred E.; Benner, Charles L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to polymeric alloys of rodlike and coil-like aromatic heterocyclic polymers useful for the fabrication of high strength load bearing structural components. In one aspect of the invention rod-, like aromatic heterocyclic polymers are used as reinforcement in coil-like heterocyclic polymer matrices to provide composites at the molecular level that are analogous to chopped fiber composites. A representative example of the coil-like heterocyclic polymer consists essentially of repeating units having the following structural formulas:, _ or, - 18 -, wherein X is NR N? , O or S, where ? is phenly, Ar' in , , or , and m is an integer having a value such that the polymer has …
Read the whole patent
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 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
- 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.