Renewable furan based amine curing agents for epoxy thermoset
AssigneesDrexel Unversity, Government of the United States of America, AS Represented By the Secretary of the Army
InventorsGiuseppe R. Palmese, Santosh K. Yadav, John Vergara, John J. LaScala
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Abstract
The present invention relates novel furan based amine cross-linkers with improved thermomechanical and water barrier properties. The novelty of this invention is the use of aromatic, and hydrophobic aliphatic aldehydes to bridge two furfuryl amines, which yields a diamine or tetra amines with a significantly enhanced hydrophobic character. These diamine cross-linkers exhibit enhanced water barrier properties and thermomechanical properties when cured with both commercial and synthetic epoxies.
Claims1
A compound selected from:
- 4-{bis[5-(aminomethyl)furan-2-yl]methyl}-2-methoxyphenol;
- 4-{bis[5-(aminomethyl)furan-2-yl]methyl}-2,6-dimethoxyphenol;
- {[(3,4-dimethoxyphenyl)methanediyl]difuran-5,2-diyl}dimethanamine;
- {[(4-methylphenyl)methanediyl]difuran-5,2-diyl}dimethanamine;
- ({[4-(propan-2-yl)phenyl]methanediyl}difuran-5,2-diyl)dimethanamine;
- [(cyclohexylmethanediyl)difuran-5,2-diyl]dimethanamine;
- (octane-1,1-diyldifuran-5,2-diyl)dimethanamine;
- (dodecane-1,1-diyldifuran-5,2-diyl)dimethanamine;
- and
- (5,5′,5″,5′″-(pentane-1,1,5,5-tetrayl)tetrakis(furan-5,2-diyl))tetramethanamine.
Dependencies are inferred from the claim text.