Surface treating agents for metal work

Details Surface treating agents for metal work Surface treating agents for metal work

B - Operations, Transporting

23

K

148/59

B23K 35/362 (2006.01) B23K 35/36 (2006.01) C23F 11/14 (2006.01) H05K 3/28 (2006.01)

Patent

CA 2026684

ABSTRACT OF THE DISCLOSURE Surface treating agents for metal work containing at least one benzimidazole compound represented by the following formula (I): Image (I) in which R1 independently represents a substituted or unsubstituted alkyl group of 1 to 6 carbon atoms, m is an integer of 0 to 2, and R2 independently represents a hydrogen atom, a substituted or unsubstituted alkyl group of 1 to 17 carbon atoms or an aryl group of the formula: Image wherein R3 independently represents a substituted or unsubstituted alkyl group of 1 to 6 carbon atoms, and n is an integer of 0 to 3. These surface treating agents are particularly useful as a preflux in the production of printed circuit boards.

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