C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 17/00 (2006.01) B01F 17/00 (2006.01) C09B 67/46 (2006.01) C09D 7/02 (2006.01) C09D 11/02 (2006.01)
Patent
CA 2193763
A pigment dispersion is disclosed which comprises a pigment, pigment dispersant, and optionally a binder resin, wherein the pigment dispersion comprises as the pigment dispersion at least 0.2 parts by weight of a modified novolak resin(A) and/or a graft copolymer (B) relative to 100 parts by weight of the pigment, the modified novolak resin (A) and the graft copolymer (B) each having an aromatic ring and a ring structure given by ring opening of an epoxy group by a carboxyl group of a hydroxycarboxylic acid or a derivative thereof. An ink composition for offset printing containing the pigment dispersion is also disclosed.
Ishikawa Hiroyuki
Iwase Koji
Kinoshita Hideki
Sato Teruhisa
Osler Hoskin & Harcourt Llp
Sakata Inx Corp.
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