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Spredox

Dispersing Agent

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Spredox® dispersing agents are polymeric dispersants developed to disperse and stabilize pigments in coating, ink, and plastics. Spredox® greatly enhances the properties and performance of the finished products.

Benefits include:

  • Reduction of viscosity
  • Color strength enhancement
  • Gloss increase
  • Longer storage stability

General Guidelines

In general, it is advised increase pigment loading with Spredox dispersing agents in the formulation. This is because Spredox products lower intermolecular forces, leading to significant viscosity reduction.

If viscosity is too low, proper grinding will not occur. It is thus recommended to increase pigment loading to lift the millbase to proper milling viscosity. Higher pigment loading also means higher letdown output, which increases the overall production output.

Dosage

Pigment% Dosage
Organic pigments15-20%
Inorganic pigments10-15%
TiO2/Filler1-2%
Carbon black25-40%
High surface carbon black40-80%
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Based on extensive testing, there is an ideal dosage level for dispersing agents in a formulation. This can also be expressed as % Dispersing Agent on the Weight of Pigment (DAOWP).

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Synergists

It is particulayly difficult to maximize the performance of some organic pigments in the dispersion process. In such cases, Spredox synergists can be used along with the Spredox dispersing agents.

Our Synergist range include:

Spredox D-920Para pigmentos orgánicos de rojo y amarillo en la sistema de base solvente.
Spredox D-950Para pigmentos orgánicos de azul/verde y negro de carbón en la sistema de base solvente.
Spredox D-953Para pigmentos orgánicos de azul/verde y negro de carbón en la sistema de base agua y base alcohol.
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The recommended ratios of (Dispersing agent: Synergist) are:

 

2:1Negro de Carbón de Alta Tensión Superficial
4:1Negro de Carbón
4:1Azul Orgánico
9:1Verde Orgánico (G-7)
9:1Rojo y Amarillo Orgánico
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Application
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Spredox™ for Coating

Dispersing agents for solvent based, water based and powder systems, across a wide variety of applications.

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Spredox™ for Ink

Additives to aid in dispersing inorganic and organic pigment in offset, flexo, gravure and other ink applications.

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Spredox™ for Plastic

Dispersants for plastic and powder coating applications.

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