Copper particulate dispersions and method for producing the...

Compositions – Electrically conductive or emissive compositions – Free metal containing

Reexamination Certificate

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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.

REFERENCES:
patent: 4539041 (1985-09-01), Figlarz et al.
patent: 4663079 (1987-05-01), Yamaguchi et al.
patent: 7413771 (2008-08-01), Arora et al.
patent: 10110123 (1998-04-01), None
patent: 2000123634 (2000-04-01), None
patent: 2004143325 (2004-05-01), None
patent: 2004232012 (2004-08-01), None
patent: 2004256857 (2004-09-01), None
patent: 2005097677 (2005-04-01), None
patent: 2005307335 (2005-11-01), None
patent: 2005330552 (2005-12-01), None
Machine translation of JP2005-307335.
English Abstract of JP2000123634.

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