Cyclic imino ethers in practical step-growth polymerizations
- Ohio State Univ., Columbus, OH (United States)
Dicarboxylic acids, glycols, diamines, epoxy resins, phenolics, etc., have significant uses in a variety of thermoplastics and thermosets. Cyclic imino ethers may be used to react with the functionalities on the aforesaid starting compounds, providing practical paths to a host of improved performance materials. For example, the dicarboxylic acid-cyclic imino ether reaction may be employed to produce super tough, poly(amide-ester) thermosets. Or, phenolics may be chain extended and/or crosslinked with cyclic imino ethers to produce poly(amide-ether) thermosets with highly attractive thermal, physical and mechanical properties, with a wide variety of composite applications. In the recycling area, it is also very practical to use cyclic imino ethers to chain extend, i.e., enhance the molecules weight, of recovered polyesters or polyamides to enhance performance of the recovered materials. The use of monomers and polymers containing two or more cyclic imino ether moieties for production of new materials will be discussed. The phenolic hydroxyl-cyclic imino ether reaction will receive the main focus as a practical route to new poly(amide-ether) thermosets, based on the authors experience in using this chemistry to design matrix resins for high performance composities.
- OSTI ID:
- 141808
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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