High molecular weight trifunctional polyoxyethylene amines
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United States of America Patent
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Mar 17, 1992
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N/A
app pub date -
Nov 3, 1989
filing date -
Nov 3, 1989
priority date (Note) -
Expired
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Abstract
High molecular weight secondary amine terminated amides are disclosed which are prepared by a two-step process wherein a triamine and dibasic acid are reacted to form an acid terminated amide intermediate which is further reacted with a polyethylene glycol diamine or N,N'-diisopropyl derivative thereof to form an ungelled amine terminated product which is useful as an epoxy curing agent. The product can be represented by the following structure: ##STR1## where x=1 to 5 and R'=H or C.sub.1 to C.sub.4 carbon atoms.
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