DISPERSING AGENTS & BINDERS
DISPERSING AGENTS
TiraCare coating dispersants are tightly defined dispersants based on acrylic chemistry. Their narrow molecular weight distributions provide optimum dispersion efficiency, translating into maximum performance at the lowest possible formulation cost.
APPLICATIONS
TiraCare dispersants are used in the paint industry to achieve the highest possible loading of fillers and pigments in the grind phase. Higher loadings allow finer grinds that in turn improve the hiding power of the paint so as to extract the maximum value from the pigments.
TiraCare dispersants are surface-active ingredients, which ease the incorporation of pigments and fillers into a liquid. Agglomerates are broken up by shearing whereby new surfaces are created. They are wetted by dispersing agents which stabilize the aggregates of pigments or fillers. Calcium carbonate must usually be ground to a particular particle size in a process greatly benefited by the use of a dispersant. Calcium carbonate is widely used in the paint industry and in paper production. Many other inorganic (and organic) minerals and pigments are also dispersed into water-based slurries for a variety of applications.
Low molecular weight TiraCare structures with anionic groups are used in highly filled inorganic pigment or filler pastes due to strong viscosity reduction, but can be used for organic pigments as well. Amphiphilic structures with high molecular weight have to be used in higher concentrations calculated on pigment in comparison to those discussed above. They are always recommended for pastes with requirements for long-term stability. Especially for expensive organic pigments this structure principle is technically and economically beneficial. Even titanium dioxide as high-density material can be stabilized without significant settlement for several months.
BENEFITS
- Higher loading of pigments and fillers
- Increased coloration or hiding power
- Reduction of specks
- Excellent dilution behavior
- No settlement dispersing of TiO2
BINDERS
The binder is one of the most important components of a paint, as it is the film-forming component. Paint consists of 4 main ingredients: Pigments, Charges, Solvent and Binder. Diluents, additives (dispersants, defoamers, driers, corrosion inhibitors...) and colorants can also be part of a paint formulation, but they are optional.
Pigment and charges are providing color, optical and physical properties to the finished paints, but are in general insoluble in the solvent. In this context, binder is playing the key role of holding the pigment and make it adheres onto a surface.
The binder must have the necessary physical properties for the intended purpose. These physical properties include flexibility, hardness, abrasion resistance, water resistance, gloss, stain resistance, bio resistance, washability, ultraviolet light stability, and chemical resistance. The end application (interior paints, exterior paints, floor coatings...) and the atmosphere to which the paint will be exposed (industrial area, countryside, seaside...) is determining the required properties that binder have to bring to the formulation.
TIRA® is proposing a wide range of binders under the TiraCare brand. They are acrylic latexes used in applications such as interior or exterior paints, high PVC paints, semi-gloss and high gloss architectural coatings, sealants, adhesives and elastomeric coatings.
APPLICATIONS
- Interior & Exterior Paints
- Textured Finishes
- Architectural Applications
- Plasters
- Roof Coatings, Flexible Coatings
- Primers for Mineral Substrates
- Silk paints, Semi-Gloss Paints and Full Glossy Paints