| 摘要 |
PROBLEM TO BE SOLVED: To obtain a dispersing agent composition with less change with time and excellent dispersing effect capable of obtaining viscosity-reduction effect at the dispersion because having defoaming effect when a ceramic fine powder, an inorganic or organic powder is dispersed. SOLUTION: The dispersing agent composition contains (A) one kind or two or more kinds selected from acetylene glycol and ethoxylated matters of acetylene glycol; (B) a polyoxyalkylene alkyl ether having HLB of 8-19; and (C) a copolymer obtained by polymerizing a monomer mixture containing (a) a monomer represented by formula (4) and (b) an acrylamide based monomer and/or glycerol mono-methacrylate in the presence of an azoamide compound as a polymerization initiator. In formula (4), R<SP>4</SP>is H or CH<SB>3</SB>, R<SP>5</SP>is H, an alkyl group or phenyl group and (p) is an integer of 2-40. COPYRIGHT: (C)2005,JPO&NCIPI
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