Mineral Oil Base Black (MOBB)

Mineral Oil Base Black, or "MOBB" for short, is a dispersion of 25% carbon black in a severely hydrotreated, low-odor, zero-VOC mineral oil. MOBB is intended primarily as a commodity item for the manufacture of newsink, but finds many other uses as well.


Among them, MOBB serves as an excellent starting point for typewriter ribbon inks, computer printer ribbon inks, and special never-dry marking and fingerprinting  inks. MOBB is excellent for any application where intense black color is needed in a base which will never dry out. When approximately 30% hydrocarbon varnish is added to 70% MOBB, a web offset newsink is obtained. When the base is cut with petroleum oil and resinated slightly with varnish or pitch, a letterpress newsink is obtained. The carbon black pigment in MOBB is thoroughly milled down to micron particle size, so no further processing beyond thorough mixing with diluting agents is necessary, as the base has been more than adequately milled by us.

MOBB is compatible with petroleum-based oils and solvents and also with vegetable oils such as soybean oil and linseed oil. MOBB cannot be used with lower alcohols, ketones or esters. 

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


Pigment type: pigment-grade furnace carbon black (news, low gloss)

Pigment Content: 25%

Solids Content: 100%

Vehicle type: 750 SUS Hydrotreated Mineral Oil (petroleum)

Appearance: Thin, short black paste

Packaging Options:

Color Plant & Offices: 2020 West Parkes Drive, Broadview, IL 60155

Black Plant: 2700 South 12th Avenue, Broadview, IL 60155

Telephone 708 344 1295  FAX  708 865 5759

© 2017 By R. A. Kerley Ink Engineers, Inc. (Kerley Ink)