For formulators sourcing rheology control for resin, coatings, and thermoset systems, BYK Garamite 7305 additive is a powdered rheology additive positioned for polar solvent-based and solvent-free formulations, aimed at increasing storage duration and improving sagging resistance. Formulators moving away from conventional organoclay rheology systems often look at this class of additive when incorporation difficulty or inconsistent viscosity build has become a bottleneck in production.
This article covers what is documented about the additive on its product page, the industries where it is referenced, and what buyers should confirm before sourcing it for a formulation.
What Is BYK Garamite 7305 Additive?
According to its product documentation, BYK Garamite 7305 additive is a solid rheology additive based on a composition of organically modified phyllosilicates. It is described as delivering advantages over conventional organophilic phyllosilicates (organoclays), which typically require high shear forces and polar activators to support dispersion during incorporation.
Key Performance Features of BYK Garamite 7305 Additive
Easy Incorporation and Activation
Compared with conventional phyllosilicates, this additive is documented as being incorporated and activated very easily in solvents and binders using moderate shear forces, which the documentation attributes to the combination of different morphological structures in the mineral component supporting particularly easy dispersibility with high efficiency.
Anti-Settling and Antisyneresis Performance
The additive features a strong pseudoplastic viscosity profile, according to the documentation, allowing formulations with high viscosity to be achieved in the low shear range. This is described as resulting in excellent anti-settling features and antisyneresis properties for the formulations it is used in.
Shear-Thinning Viscosity Behavior
When shear forces are applied during application, the documentation describes a major reduction in viscosity, which is presented as significantly improving application properties compared with formulations that do not incorporate this rheology profile.
Applications for BYK Garamite 7305 Additive Across Industries
Thermoset Resin Systems
The product documentation lists thermosets as an application area, describing BYK Garamite 7305 additive as delivering advantages over conventional rheology additives in various resins based on unsaturated polyester, vinyl esters, polyurethanes, acrylates, and epoxy resins, which directly overlaps with the resin chemistries used across FRP and composite manufacturing.
Coatings and Powder Coatings
For the coatings industry, the documentation describes this additive as supporting anti-settling and antisyneresis properties in liquid systems. For powder coatings specifically, it is documented as increasing melt viscosity during extrusion and cross-linking, improving edge coverage, and supporting better corrosion resistance, even at low dosage.
PVC Plastisols and Other Systems
The documentation also references use in PVC plastisols, where the additive is described as a powdered thixotropic additive that disperses easily in the liquid phase, along with additional references to detergent, cleaning, and non-aqueous drilling fluid applications.
Sourcing BYK Garamite 7305 Additive for Formulation Work
Buyers evaluating BYK Garamite 7305 additive for a resin, coatings, or thermoset formulation should request the current technical data sheet to confirm recommended dosage, shear requirements during incorporation, and compatibility with the specific resin or binder system in use. Because incorporation behavior can vary between polar and less polar systems, small-scale trials are generally worthwhile before committing to a full production batch.
Sag resistance in the finished formulation can be evaluated using a recognized method such as ASTM D4400, which provides a documented way to compare formulations before and after incorporating a rheology additive.
Frequently Asked Questions
What is BYK Garamite 7305 additive used for?
It is a powdered rheology additive used to increase storage duration and sagging resistance in polar solvent-based and solvent-free formulations, including thermoset resins, coatings, and PVC plastisols.
Does BYK Garamite 7305 additive work with unsaturated polyester and epoxy resin?
According to its documentation, it is referenced for use in thermosets based on unsaturated polyester, vinyl ester, polyurethane, acrylate, and epoxy resin chemistries.
How is it different from conventional organoclays?
The documentation describes it as easier to incorporate and activate using moderate shear forces, without requiring the high shear or polar activators that conventional organophilic phyllosilicates typically need.
Can it be used in powder coatings?
Yes, the documentation describes its use in powder coatings to increase melt viscosity during extrusion and cross-linking while maintaining good flow properties.
What should I confirm before ordering BYK Garamite 7305 additive?
Buyers should request the current technical data sheet to confirm recommended dosage, shear requirements, and compatibility with their specific resin or binder system.
ChemicalsStore.com provides sourcing support, technical documentation, and responsive customer service for buyers evaluating BYK Garamite 7305 additive alongside other resin, gelcoat, and auxiliary agent products.
Explore our product page: BYK GARAMITE 7305
You may also be interested in: BYK GARAMITE 1958, our Auxiliary Agent catalog, and the BYK supplier page
Send us your target resin or binder system and required sag/anti-settling performance at info@chemicalsstore.com, and we’ll help you confirm stock and get a quote.
