Polyamines
Polyamines are used as a curing agent for epoxy resin and a curing agent or a chain extender for polyurethane resin. Examples include aliphatic polyamines such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylene hexamine, hexamethylenediamine, polyoxypropylenediamine and polyoxypropylenetriamine; alicyclic polyamines such as menthanediamine, isophoronediamine, bis(aminomethyl) cyclohexane, diaminodicyclohexylmethane, bis(4-amino-3-methylcyclohexyl) methane, N-aminomethylpiperazine, and norbornanediamine; aliphatic polyamines having aromatic ring such as xylylenediamine; aromatic polyamines such as phenylenediamine, diaminodiphenylmethane, diaminodiphenylsulfone, and diethyltoluenediamine. Takeshi et al, US Patent 7,572,877, 8/11/2009 More on Polyamines
Recent US Patents
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Recent Journal Articles
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Review Articles
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Editor's Notes
As the literature is reviewed, and items of interest concerning this topic are found. These may be added in an abbreviated form with the reference. Readers and contributors are invited to add their own notes. Contributors may add them directly and other readers can simply send their notes to the editor, Roger Corneliussen at rcorneliussen@4spe.org. He may edit and add them to this page at his discretion. More on Polyamines These polyamines usually require modifications because of amino reactivity for safety, hygiene, workability and improved properties. Representative modifications include 1) a modification by Mannich reaction with a phenol compound and an aldehyde compound, 2) a modification by reaction with an epoxy compound, 3) a modification by reaction with a compound having a carboxyl group, 4) a modification by Michael reaction with an acryl compound and 5) any combinations. Takeshi et al, US Patent 7,572,877, 8/11/2009