CRUSHED COMPOSITION OF CARBON BLACK AND RESIN, CARBON BLACK RESIN COMPOSITION, AND OFFSET PRINTING INK USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an ink for offset printing having storage stability together with improved productivity of the ink.

SOLUTION: The invention relates to the crushed composition of carbon black and a resin obtained by adding a resin for printing ink which is solid at normal temperature to the carbon black without oxidation treatment and having 60-105 ml/100g of oil absorption for dibutyl phthalate, and crushing at normal temperature. The invention also relates to the crushed carbon black resin composition wherein 1-100 pts.wt. of the resin solid in normal temperature is added to 100 pts.wt. of the carbon black in the above-mentioned composition, and to the carbon black resin composition obtained by using the composition and to the offset printing ink.

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