Compositions – Electrically conductive or emissive compositions – Free metal containing
Reexamination Certificate
2006-07-24
2011-12-27
Kopec, Mark (Department: 1761)
Compositions
Electrically conductive or emissive compositions
Free metal containing
C252S500000, C427S212000, C427S215000, C427S216000, C427S220000
Reexamination Certificate
active
08083972
ABSTRACT:
A copper particulate dispersion containing copper particulates coated with water-soluble polymers and hydroxycarboxylic acid; hydroxycarboxylic acid; and polyhydric alcohol and/or a polar solvent. The copper particulate dispersion is produced by adding hydroxycarboxylic acid such as malic acid, citric acid, and the like or a solution thereof into a dispersion containing a polar solvent and copper particulates coated with water-soluble polymers, and stirring the obtained dispersion so that part of water-soluble polymers are substituted by hydroxycarboxylic acid; discharging released water-soluble polymers from the dispersion by ultrafiltration; and subsequently adding hydroxycarboxylic acid, polyhydric alcohol and/or a polar solvent, into the dispersion.
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Machine translation of JP2005-307335.
English Abstract of JP2000123634.
Mori Kensaku
Nakata Hiroko
Okamoto Shintarou
Dykema Gossett PLLC
Kopec Mark
Nguyen Haidung
Sumitomo Metal & Mining Co., Ltd.
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