RadionBase PBX Alkali Blue is a radiation-curable dispersion of 22.5% alkali blue (Pigment Blue 61 RS, reflex blue) in a mixed oligomer system. This vehicle system has been optimized for use in paper and board, with possible applications with some surface-treated or oxidized films as well. Recommended dosage of RadionBase PBX Reflex Blue is 45%-65% by weight in a finished ink. RadionBase PBX series energy-curable bases feature soft easy-to-handle viscosity with excellent pigmentation levels.

 

Typically used to make Reflex Blue inks or used as a toner in black inks to improve their blueness of shade, 45% to 65% of RadionBase PBX Alkali Blue by total formula weight is considered a normal loading for most paste ink formulas. Excellent results for coated and uncoated stock litho & web offset ink formulas can be obtained by blending RadionBase PBX dispersions with Radion Vehicle UVP composite letdown varnish. As a toner, used 3%-12% of RadionBase PBX Alkali Blue to tone black inks. RadionBase PBX series bases can be used for mercury UV, HUV, and LED UV formulas. ​

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Chemical Resistance: 5% HCl: Poor 5% NaOH: Poor

Bleed Resistance:
Water: Excellent Ethanol: Poor Hot Paraffin: Fair Soap: Poor Lacquer Solvents: Excellent Linseed Oil: Excellent Diethylene Glycol: Fair Mineral Spirits: Excellent

Lightfastness: Full Strength: Good Tint: Fair

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SPECIFICATIONS:

Pigment type: Blue 61 RS, Alkali Blue, Reflex Blue

Color Index No: 42765:1

Pigment Content: 22.5%

Solvent Content: 0%

Solvent Boiling Range: N/A

Bio/renewables content: 0%

Vehicle type: UV- or EB-cure acrylic esters & epoxies

Appearance: Thick, tacky blue paste