Patent ID: 8430295
Filing Date: 2013-04-30
Classification: B23K,C08K,H01L,H05K

Abstract:
1. A curable flux composition, comprising, as initial components: a resin component having at least two oxirane groups per molecule; a carboxylic acid; a 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; and wherein zero to three of R 1 , R 2 , R 3 and R 4 is(are) a hydrogen; and, optionally, a curing agent.