Patent ID: 8070044
Filing Date: 2011-12-06
Classification: B22F,B23K,C22C

Abstract:
1. A polyamine flux composition comprising, as an initial component: a polyamine fluxing agent represented by formula I: wherein 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 wherein the two nitrogens shown in formula I are separately bound to one of the at least two tertiary carbons of R with the proviso that when the polyamine fluxing agent of formula I is represented by formula Ia: then zero to three of R 1 , R 2 , R 3 and R 4 is(are) hydrogen.