K-4 base black is a low-viscosity dispersion of 23.3% carbon black in a heatset vehicle. K-4 Base Black is best used for gloss heatset web offset inks in loadings of 65-80% by total formula weight. K-4 responds well to freeflowing hydrocarbon resin gel vehicles with high gloss and print jetness, further rewarding the formulator with  lowest cost to manufacture.

Using high percentages of K-4 base black in heatset ink formulas allows for low cost and excellent print jetness.

Chemical Resistance: 5% HCl: Excellent 5% NaOH: Excellent
Bleed Resistance:
Water: Excellent Ethanol: Excellent Hot Paraffin: Excellent Soap: Excellent Lacquer Solvents: Excellent Linseed Oil: Excellent Diethylene Glycol: Excellent Mineral Spirits: Excellent
Lightfastness: Full Strength: Excellent Tint: Excellent

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SPECIFICATIONS:

Pigment type: pigment-grade furnace carbon black (Black 7)

Pigment Content: 23.2%

VOC Content: 34%

Solvent Boiling Range: 435 to 750F

Vehicle type: Heatset Web Offset

Bio/renewablescontent: 7%

Appearance: Soft black paste