| abstract |
A curable amine flux composition is provided, comprising, as initial components: a resin component having at least two oxirane groups per molecule; an amine fluxing agent represented by formula I: n nwherein R 1 , R 2 , R 3 and R 4 are independently selected from a hydrogen, a substituted C 1-80 alkyl group, an unsubstituted C 1-80 alkyl group, a substituted C 7-80 arylalkyl group and an unsubstituted C 7-80 arylalkyl group; wherein R 7 and R 8 are independently selected from a C 1-20 alkyl group, a substituted C 1-20 alkyl group, a C 6-20 aryl group and a substituted C 6-20 aryl group or wherein R 7 and R 8 , together with the carbon to which they are attached, form a C 3-20 cycloalkyl ring optionally substituted with a C 1-6 alkyl group; wherein R 10 and R 11 are independently selected from a C 1-20 alkyl group, a substituted C 1-20 alkyl group, a C 6-20 aryl group and a substituted C 6-20 aryl group or wherein R 10 and R 11 , together with the carbon to which they are attached, form a C 3-20 cycloalkyl ring optionally substituted with a C 1-6 alkyl group; and, wherein R 9 is selected from a hydrogen, a C 1-30 alkyl group, a substituted C 1-30 alkyl group, a C 6-30 aryl group and a substituted C 6-30 aryl group; and, optionally, a curing agent. Also provided is a method of soldering an electrical contact using the curable amine flux composition. |