Product of mono or polyamine and polyepoxide-amine precursor, epoxy resin-amine adduct, monoepoxide-amine adduct and epoxide thinner
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United States of America Patent
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Nov 11, 2003
Grant Date -
Jun 13, 2002
app pub date -
Feb 11, 2002
filing date -
Mar 23, 2000
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Abstract
A curing agent for epoxy resins comprises: a) a reaction product of at least one polyalkylene polyether monoamine and/or polyamine with a polyepoxide and optionally, a monoepoxide to obtain an epoxide group-containing precursor, the precursor further reacted with a primary monoamine and/or a primary or secondary polyamine in at least a 10% molar excess relative to the epoxide groups of the precursor, the reaction product being substantially free of non-reacted amines; b) an amine-terminated adduct of an epoxy resin and a primary monoamine and/or a primary or secondary polyamine being substantially free of non-reacted amines; and c) an amine-terminated adduct of an epoxide group-containing reactive thinning agent and a primary monoamine and/or a primary or secondary polyamine being substantially free of non-reacted amines, and up to 50 mol % relative to the amino groups of a reactive thinning agent containing one or more epoxide groups per molecule.
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