| Résumé : |
We introduces two additives based on ethoxylated silicone polymers.
I its range of products, Siliconi Commerciale SpA includes modifiers, such as Siltop 715, an additive with substrate wetting properties and Siltop 750, a surface levelling agent with rather good slipping properties.
Both additives are based on ethoxylated silicone polymers.
The chemical composition is very important as it determines its characteristics and properties ; the polyether part serves to give the polymer the right/expected compatibility in the coating systems and with the organic polymers, which they consist of, while the silicone chain guarantees the strong surface activity and determines the specific properties of the polymer, substrate wetting or levelling agent.
Surface tension modifying additives are often useful and, in some cases, fundamental so that a coating system, especially water-based ones, can wet and therefore cover homogeneously and uniformly the surface to be painted and to ensure that the appearance of the dry paint film has the desired characteristics of brilliance and uniformity of colour or opacity. |
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Surface tension modifiers based on ethoxy silicone polymers in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4666 (12/2020)
