VANISH FOR OFFSET PRINTING INK

PROBLEM TO BE SOLVED: To provide an offset printing ink combining high fluidity with misting resistance of the ink. SOLUTION: The vanish for offset printing inks includes a rosin-modified phenolic resin having a structure obtained by reacting at least a condensate of a phenol and an aldehyde, a rosi...

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Bibliographische Detailangaben
Hauptverfasser: MIYAUCHI TATSUO, SHINOZAKI SHUNSUKE, HOSONO CHIAKI, KIMOTO DAIKI, SUZUKI MAKI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an offset printing ink combining high fluidity with misting resistance of the ink. SOLUTION: The vanish for offset printing inks includes a rosin-modified phenolic resin having a structure obtained by reacting at least a condensate of a phenol and an aldehyde, a rosin, and a polyol. The rosin-modified phenolic resin is obtained by mixing two kinds of rosin-modified phenolic resins having different weight average molecular weights. The phenol and the polyol that are the raw materials for the two kinds of rosin-modified phenolic resins having different weight average molecular weights are each substantially the same. A gel vanish for offset printing inks obtained by gelating the vanish for offset printing inks is presented. The offset printing inks include the gel vanish. COPYRIGHT: (C)2011,JPO&INPIT