Polymer permanent flux and solder-through conformal coating

Details Polymer permanent flux and solder-through conformal coating Polymer permanent flux and solder-through conformal coating

C - Chemistry, Metallurgy

08

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117/204, 402/517

C08L 45/00 (2006.01) B23K 35/36 (2006.01) C09D 123/08 (2006.01) C09D 133/02 (2006.01) H01B 3/44 (2006.01) H05K 3/28 (2006.01) H05K 3/34 (2006.01)

Patent

CA 1242295

Abstract An ethylene-acrylic acid copolymer can be used as a flux or a solder-through conformal coating. The copoly- mer can be melted and used as a coating or core for solder, or applied directly to a component, or made into a thixotropic gel with mineral spirits and/or alcohol, then applied as a coating to a component or assembly. Terpenes may be added as tackifiers in some applications. Whether used as a flux or simply solder-through coating, the material provides a self-healing moisture barrier which can safely remain on the component.

396915

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