Cutting-edge dispersing agents for natural colors · Irgastab® and Irganox® additives Tinuvin®...

Cutting-edge dispersing agents for natural colorsEfka® dispersing agents for digital printing

EDC_4311_e_BR_Efka_DispAg_Vers1.indd 2EDC_4311_e_BR_Efka_DispAg_Vers1.indd 2 26.09.11 11:5126.09.11 11:51

hard, waxy clear, free-fl owing

Competitor Efka® 7701 Efka® 7731 Efka® 7732

Efka® 7701, Efka® 7731 and Efka® 7732 do not contain solvents.

2

More ways to achieve more

with inkjet printing

Inkjet printing requires highly stable inks at low viscosities. Such inks can only be achieved with the most carefully selected high-performance pigment dispersing agents. Efka® products are known for their high performance and have become essential for modern inkjet applications.

Tailor-made dispersing agents

Efka® 7701, Efka® 7731 and Efka® 7732 provide pigment dispersion by steric stabilization using the most innovative processes in industrial polymer chemistry.

This new generation of polymeric dispersing agents is tailor-made for inkjet applications and BASF’s new product series covers the full range of formulating requirements for all important ink types and a broad selection of pigments to give the highest performance in solvent-based and UV-curable inkjet inks.

Easy to handle products

Efka® 7701, Efka® 7731 and Efka® 7732 are liquid and solvent-free. Unlike products that are solid or waxy, they are easy to handle and easy to dissolve.

Broad solubility

Efka® 7701 and Efka® 7731 show good solubility in common monomers and oligomers used in UV-curable inkjet inks. Efka® 7732 is also effective but shows slight haziness in some monomers.

The dispersing agents also show good solubility in solvents commonly used in mild- and strong-solvent inkjet inks.The products also have good solubility in ethanol and ethyl acetate. All three products have limited to no solubility in very apolar solvents such as pure alkanes and mineral oils. For these media a product such as Efka® 7711 is better suited.

Cutting-edge dispersing agents for natural colors

Efka® dispersing agents for digital printing

With a new generation of dispersing agents, BASF now introduces the next generation of inkjet inks with even higher performance – this means more pigment stabilization options for formulators, more colors for designers and printers, more digital printing.


Product selection

Products 100 % UV Strong-solvent Mild-solvent

Efka® 7701

Efka® 7731

Efka® 7732

Good stability in mill base and in fi nished ink

The stability of the pigment dispersion in the ink is very important. Efka® dispersing agents not only impart good stability to the fi nished ink but also to the higher concentrated mill bases. This allows storage of the mill base without risk of fl occulation before use in the fi nished ink formulation.

A good example of this stabilizing ability is given here for a 100 % UV-curable ink formulation. Efka® 7731 is compared to a competitor dispersing agent for use with a quinacridone pigment.

Here Efka® 7731 provides good stabilization of the mill base and the fi nished ink whereas the competitive product does not suffi ciently stabilize the pigment.

The stabilizing properties of the dispersing agents impart good fi ltration performance to the inks resulting in clog-free print-heads and fi lters.

Ink and millbase stability Cinquasia® Magenta L 4540

(Old name: Cinquasia® Magenta B RT-343-D)


Efka® dispersing agents for digital printing 3

140

120

100

80

60

active dispersing agent on pigment (%)

vis

cosity s

tab

ility

(%

)

10 20 30 40 50 60 70

Efka® 7731 millbase

Efka® 7731 ink

Comp B millbase

Comp B ink


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Smooth fl ow for perfect coverage

Low viscosity and near-Newtonian fl ow

A fl at rheological profi le with minimal viscosity change on storage or jetting is a very important requirement for inkjet inks. Developing low viscosity in the fi nished ink is also important. Both of these properties can be achieved with the new Efka® dispersing agents.

Cinquasia® Magenta L 4540

(Old name: Cinquasia® Magenta B RT-343-D)

Viscosity 100 % UV system

3 % pigmentation

The diagram shows that Efka® 7731 gives lower viscosity when compared with the competitor product. Furthermore the high- and low-shear viscosity values are almost equal indicating a near-Newtonian fl ow profi le.

22

20

18

16

14

12

10

8

6

4

2

0

Efka® 7731 competitor B

vis

cosity [m

Pa.s

]

20 40 60 20 40 60

low-shear high-shear stability

140

120

100

80

60

sta

bility

40

35

30

25

20

15

10

5

0

comp

B

vis

cosity [m

Pa.s

]

high-shear viscosity low-shear viscosity

Efka®

7701

comp

B

Efka®

7731

comp

B

Efka®

7701

comp

B

Efka®

7731

comp

B

Efka®

7731

20 % on

Magenta

PR122

20 % on

Blue

15.4

20 % on

Yellow

PY151

20 % on

Black

PBk7

20 % on

Magenta

PR202

Performance over a broad range of pigments

Efka® 7701 and Efka® 7731 outperform the tested competition products for all the tested pigment chemistries in a UV-curable inkjet formulation.

The Efka® products give the lowest viscosity and good

stability – even at low use concentrations.




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Product selection by formulation type and pigment

Products Old name Colour Index Efka® 7731 Efka® 7701 Efka® 7700

mild-solvent inkjet formulation

Cinquasia® Magenta L 4540 Cinquasia Magenta B RT-355-D –

Cromophtal® Yellow L 1061 HD Irgazin® Yellow 2088 P.Y. 151

Cromophtal® Yellow D 1085 Cromophtal® Yellow LA2 P.Y. 150

NIPex®1 160 Q P.Bk. 7

Heliogen® Blue D 7110 F Irgalite® Blue GLVO P.B. 15.4

Products Old name Colour Index Efka® 7731 Efka® 7732 Efka® 7701 Efka® 7700

strong-solvent inkjet formulation

Cinquasia® Magenta L 4540 Cinquasia® Magenta B RT-355-D –


Cromophtal® Yellow D 1085 Cromophtal® Yellow LA2 P.Y. 150

NIPex®1 160 Q P.Bk. 7


Products Old name Colour Index Efka® 7701 Efka® 7731 Efka® 7732

UV-curable inkjet formulation 100 % solids


Cinquasia® Pink D 4450 Cromophtal® Pink PT P.R. 122


Cinquasia® Magenta L 4530 Cinquasia® Magenta B RT-343-D P.R. 202

Evonik®1 Special Black 250 P.Bk. 7

highly recommended

recommended




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Performance with inorganic pigments

Efka® 7701, Efka® 7731 and Efka® 7732 are also effective with inorganic pigments such as TiO2. For example, Efka® 7731 is effective for white UV-curable inkjet formulations.

The products have also shown good performance with inorganic pigments used in ceramic inkjet printing providing good stability with no sedimentation. In some systems, performance can further be improved when high-molecular-weight dispersing agents are combined with Efka® 1501.

High-performance solutions for inkjet and

energy-curable inks – Efka® 7701, Efka® 7731,

Efka® 7732 dispersing agents

• tailor-made for high-performance printing applications• liquid, undiluted, solvent-free products which are easy

to use and handle at room temperature• new proprietary BASF polymer technology

A new family of premium dispersing agents that provide

• superior rheological properties• higher pigment loading in mill bases• unmatched pigment dispersion stability• near-Newtonian fl ow behavior

For best-in-class printing inks that set new performance benchmarks for the whole industry.

BASF products for digital printing

Cinquasia®, Cromophtal®, Heliogen®, Irgalite®, Irgazin® and Paliotol® pigments for solvent-based and UV-curable inkjet inks

Orasol® dyes for solvent-based inkjet inks for coding and marking

Cromophtal®, Heliogen®, Irgalite®, Irgazin® and Paliotol® pigments for aqueous inkjet inks

Basacid® dyes for aqueous inkjet inks

Microlith® pigment preparations for solvent-based and UV-curable inkjet inks

Cromophtal®, Heliogen®, Irgalite®, Irgazin® and Paliotol® pigments for color electrophotographic toners

Efka® high-molecular-weight pigment dispersing agents for UV-curable, solvent- and water-based inkjet inks

Efka® defoamers, slip and leveling agents

Joncryl® HPD styrene/acrylic resin solutions for pigment dispersion in water-based inkjet inks

Joncryl® styrene/acrylic resins for solvent-based inkjet inks

Darocur®, Irgacure® and Lucirin® photoinitiators for UV curing

Laromer® reactive diluents and oligomers for UV curing

Irgastab® and Irganox® additives

Tinuvin® UV absorbers and hindered amine light stabilizers

The power to dazzle




7Cutting-edge dispersing agents for natural colors



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The data contained in this publication are based on our current knowledge and experience. In view of the many factors that may affect processing and application of our product, these data do not relieve processors from carrying out their own investigations and tests; neither do these data imply any guarantee of certain properties, nor the suitability of the product for a specific purpose. Any descriptions, drawings, photographs, data, proportions, weights, etc. given herein may change without prior information and do not constitute the agreed contractual quality of the product. The agreed contractual quality of the product results exclusively from the statements made in the product specification. It is the responsibility of the recipient of our product to ensure that any proprietary rights and existing laws and legislation are observed. When handling these products, advice and information given in the safety data sheet must be complied with. Further, protective and workplace hygiene measures adequate for handling chemicals must be observed.

® = registered trademark of the BASF Group ®1 = registered trademark of Evonik Industries

Contact

Europe

BASF Schweiz AGPigmentsKlybeckstrasse 1414057 BaselSwitzerlandTel.: +41 61 63-62606Fax: +41 61 [email protected]

BASF Nederland B.V. Resins & AdditivesInnovatielaan 18466 SN NijehaskeThe [email protected]@basf.com

Eastern Europe, Africa, West Asia

BASF SEDispersions & PigmentsEUM/SD - Europe House67056 LudwigshafenGermanyTel.: +49 621 60-99873Fax: +49 621 60-76115

BASF SE

67056 Ludwigshafen Germany www.dispersions-pigments.basf.com


Cutting-edge dispersing agents for natural colors · Irgastab® and Irganox® additives Tinuvin®...

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