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One of the most important steps in the manufacturing of mill bases, pigment concentrates and other pigmented systems is the dispersion process.During this process the pigments, which are insoluble solids, need to be distributed within the liquid medium in order to be wetted, separated and finally stabilized to prevent the re-agglomeration of the pigments.Conventionally nonylphenol ethoxylates are used as wetting agents and sodium polyacrylates as stabilizers.In this paper, we will be discussing the use of an environmentally friendly hyper-branched polymeric surfactant (HBS) to improve the dispersion process of a water-based acrylic gloss paint using a standard polyacrylate (SSPAC) stabilizer.The HBS is a highly surface active agent and the results showed that in combination with a SSPAC the HBS can improve the wetting characteristics of the SSPAC and due to the chem. structure, contribute to steric stabilization of the dispersion.

Surface Coatings Australia

Low odour, VOC-free renewable coalescents for latexes used in very low VOC paints

Author: Shah, Shailesh ; Shah, Vishnu ; Schulte, Heinz-Guenther ; Natesh, Anbu ; Frommelius, Harald

High-purity fatty acids and their blends can be used as very low odor VOC-free coalescence aids in latex paints.The compounds provide improved hardness, rheol., scrub resistance and gloss.

Kompleksnoe Ispol'zovanie Mineral'nogo Syr'ya

Extraction in copper hydrometallurgy: development and modern status

Author: Crane, Philip

A review on the Cu extraction from ore concentrates, with the associated stages of leaching, extraction into organic phase, reextraction into aqueous electrolyte solution, and electrowinning on a cathode.Industrial process conditions are considered.

100 Deals associated with Cognis Australia Pty Ltd.

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100 Translational Medicine associated with Cognis Australia Pty Ltd.

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