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Carbon Black Pigments for Waterborne SOHO Inkjet Ink Application

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Inkjet Technology

Columbian Chemicals Company offers a unique range of carbon blacks targeted to meet the innovate needs of the inkjet printing industry

*Small Office & Home Office = SOHO

Aqueous-Based

Solvent-Based

UV-Curing

Aqueous-Based

Formulation Base

SOHO

Wide Format

Ink Types

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TEM Micrograph of a Carbon Black Aggregate

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Carbon Black Particle and Aggregate Size

Mean Particle Size8-10 nm

Mean Aggregate Size50-300 nm

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SOHO Inkjet Pigment Dispersion (For Start-Ups)

Dispermat

LAU Shaker Mill

Premix

Mill Base

1,000 rpm3-5 minP/D = 1.36

16 – Hr milling3/32” SS media10% Pigment Loading

Premix

Dynol 604 @ 100% a.i.

Propylene Glycol

Neocryl A5090 @ 45% a.i.

Total:

54.4

1.0

11.2

33.4

100.0 grams

Solsperse 46000 @ 50% a.i.

DI Water

Carbon Black

Total:

27.0

54.6

18.4

100.0 grams

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Testing Inkjet Pigment Dispersion

•Microtrac Aggregate Size & Distribution10% Pass (nm)50% Pass (nm)100% Pass (nm)

•Accusizer Aggregate Count

•Hunter MasstoneL Valuea Valueb Value

• Viscosity (ULA @ 25 °C/cps)

• pH

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Microtrac Aggregate Size Analyzer

Measures single aggregates to give distributions

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Accusizer Single Particle Analyzer

Designed for Aggregates > 0.5 μm

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SOHO Inkjet Grade Carbon Blacks

Property Raven 7000 Raven 3500 Raven 2500

Mean Particle Size (nm) 11 12 13

NSA (m2/g) 575 375 270

STSA (m2/g) 300 212 206

OAN (ml/100g) 95 105 67

Volatile Content (%) 8.5 5 1.2

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Comparative Microtrac ASD for SOHO Application

Raven 7000

Raven 3500

Raven 2500

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SOHO Ink Jet Pigment Dispersion Quality

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SOHO Inkjet Application Summary

Parameter Benefits Carbon Black

Raven 3500

Raven 7000

Lower Printhead Nozzle blockages

Lower Maintenance

High Ink Processability

Potential to increase pigment loading

Ease of dispersion

Lower penetration on porous substrates

Raven 2500

Raven 3500

Raven 2500Viscosity (Lower)

Bluer undertoneUndertone (More negative b-value)

Structure (Higher) Raven 3500

More Jet Black

Raven 2500

Particle Size (Fine)

Accusizer Count (Lower)

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Need More Need More Technical Information?Technical Information?

ContactContactThe USA Technical Inquiry TeamThe USA Technical Inquiry Team

770-792-9335e-mail iteam@columbianchemicals.com

orVisit our web site

www.columbianchemicals.com