Amine flux composition and method of soldering

US8070046B1 · kind B1 · utility

Assignee

• Rohm and Haas Electronic Materials LLC · US

Inventors

• David Fleming · Northborough, US
• Mike K. Gallagher · Hopkinton, US
• Kim Sang Ho · Richboro, US
• Xiang-Qian Liu · Collegeville, US
• Mark R. Winkle · Lansdale, US
• Asghar A. Peera · Cary, US
• Glenn N. Robinson · Naperville, US
• Ian A. Tomlinson · Midland, US

Key dates

• Filing date: Dec 2, 2010
• Grant date: Dec 6, 2011
• Expiry date: Dec 2, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K2101/42
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

An amine flux composition is provided, comprising, as an initial component: an amine fluxing agent represented by formula I:wherein R1, R2, R3 and R4 are independently selected from a hydrogen, a substituted C1-80 alkyl group, an unsubstituted C1-80 alkyl group, a substituted C7-80 arylalkyl group and an unsubstituted C7-80 arylalkyl group; wherein R7 and R8 are independently selected from a C1-20 alkyl group, a substituted C1-20 alkyl group, a C6-20 aryl group and a substituted C6-20 aryl group or wherein R7 and R8, together with the carbon to which they are attached, form a C3-20 cycloalkyl ring optionally substituted with a C1-6 alkyl group; wherein R10 and R11 are independently selected from a C1-20 alkyl group, a substituted C1-20 alkyl group, a C6-20 aryl group and a substituted C6-20 aryl group or wherein R10 and R11, together with the carbon to which they are attached, form a C3-20 cycloalkyl ring optionally substituted with a C1-6 alkyl group; and, wherein R9 is selected from a hydrogen, a C1-30 alkyl group, a substituted C1-30 alkyl group, a C6-30 aryl group and a substituted C6-30 aryl group. Also provided is a method of soldering an electrical contact using the amine fl…