Post on 18-Nov-2014
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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