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Monday, 14 October 2019
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Raw materials & technologies, Raw materials, Coatings additives

Efficient additive for intense reds and yellows

Wednesday, 2 March 2016

The demands for covering power and colour intensity are growing constantly in architectural applications. A new dispersing additive increases pigment loading, which simplifies the grinding process.

The demands for covering power and colour intensity are growing constantly in architectural applications. Source: Evonik

The demands for covering power and colour intensity are growing constantly in architectural applications. Source: Evonik

 "Tego Dispers 747 W" from Evonik has been specially developed for water-based iron oxide concentrates in architectural applications.

Good characteristics in tinting processes

The additive can be used for all types of iron oxide, thus reducing the number of dispersing additives needed — according to the producer a significant difference from additives based on polyacrylate salts. Furthermore, it closes the price/performance gap to many more costly polymer additives. It is suitable for water-based, inorganic pigment concentrates and demonstrates good processing characteristics in the tinting process.

Lasting pigment stabilisation

The additive combines the advantages of electrostatic stabilisation with those of steric stabilisation. As a result, this provides lasting pigment stabilisation for a uniformly high level of color intensity, even when stored for long periods of time. In addition, the additive lowers the viscosity of the pigment concentrate. This allows the concentrate to absorb more pigment, reducing the amount of concentrate needed to cover a given surface area.

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