Ultrafine metal powder slurry with high dispersibility

Details Ultrafine metal powder slurry with high dispersibility Ultrafine metal powder slurry with high dispersibility

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) C09C 3/00 (2006.01) C22C 19/03 (2006.01) H01B 1/22 (2006.01) H01G 4/30 (2006.01)

Patent

CA 2415035

An ultrafine metal powder slurry with high dispersibility includes an organic solvent ; a surfactant having a hydrophilic group and a lipophilic group; and an ultrafine metal powder in an amount more than 60% by mass and less than 95% by mass . In the slurry, the hydrophilic group of the surfactant is at least one selected from a sulfonato group, sulfo group, sulfonyldioxy group, polyoxyethylene group with carboxyl group, and polyoxyethylene group with phosphate group, and the lipophilic group is an alkyl containing 12 or more carbon atoms or an alkylphenyl. The ultrafine metal powder slurry includes no aggregated particles, exhibits good dispersibility and is useful as a metal material for conductive pastes . The slurry can save a part of process steps in conventional conductive paste production processes , can shorten a process time and can save in labor.

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