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Lefevre C.,Coatings Research Institute CoRI | Wenkin M.,Coatings Research Institute CoRI | Delvaux M.H.,Coatings Research Institute CoRI
Journal of Protective Coatings and Linings | Year: 2015

Experts state that the use of biosourced and renewable raw materials in the paint market creates new challenges for paint chemists. The challenges are faced, as there is a limited range of such biosourced and renewable raw materials, which satisfy the required quality, cost, and availability. Another factor that gives rise to such challenges is that there is lack of adequate information about these products. Experts discuss the actual status regarding the incorporation of existing biosourced and renewable raw materials in paint formulations to address these challenges.

De Lame C.,Coatings Research Institute CoRI | Claeys J.-M.,Coatings Research Institute CoRI | Greenwood P.,Akzo Nobel | Lagnemo H.,Akzo Nobel
Polymers Paint Colour Journal | Year: 2010

The use of modified colloidal silica in mineral silicate paints in place of a part of the inorganic binder was studied. The Bindzil CC3O solution has been diluted with water in a weight ratio 50-50 and diluted Bindzil CC3O was added to Keim Fixativ under strong agitation. The chalking resistance of the four silicate systems was evaluated following DIN 53159 standards. A black paper photo was pressed with a fixed force on the paint surface, the white traces on the black paper after the test due to chalking were quoted and a ranking was established between the different systems under test. The water permeability was evaluated from one face coated mineral blocks, which are characterized by a high porosity. The scrub resistance of the different systems has been evaluated according to ASTM 2486 standard 'Standard test method for scrub resistance of wall paint'. It was observed that the liquid water permeability is strongly reduced by the use of surface treated colloidal silica.

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