Rheological Additive(Bentonite)

Bentonite is a high-purity, hydrophilic modified montmorillonite. It is an off-white, non-toxic, soft powder composed mainly of SiO₂ and Al₂O₃. In water, it offers excellent thickening, suspension, and thixotropic properties. It is widely used as a suspending agent and thixotrope in water-based coatings, latex paints, and cosmetics. In coatings, its lamellar structure forms a "card-house" network that prevents settling, controls sagging, and improves storage stability.

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·PRODUCT

Product

System

Active Component

Solid Content

Solvent

Characteristic & Application Range

GD-BC Series

W

Montmorillonite thickener

100%

/

- The specially processed thickening agent of montmorillonite clay, dispersed in the water-based system, can form a hard house structure, which can provide thickening, thixotropic, anti-settling, anti-hanging and anti-water separation functions.

- It is stable in alcohols, ethers and some ester solvents.

- Suitable for all kinds of water-based, water-soluble coating systems.

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Rheology Modifier(Organoclay)
Organoclay is a specially modified bentonite treated with quaternary ammonium salts. This surface treatment transforms the naturally hydrophilic clay into an organophilic material, making it fully dispersible in organic solvents and resin systems. As a non-reactive rheology modifier, it builds a controllable thixotropic network through particle-particle interaction and swelling. This unique mechanism delivers consistent viscosity, sag control, and anti-settling performance across a wide range of non-aqueous formulations.

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Dispersant
Poor pigment dispersion can lead to several defects, including flocculation, reduced gloss, color shift, floating/flooding, Benard cells, and settling. To prevent these issues, dispersants are essential. In pigment manufacturing, the smallest units are primary particles. These can form aggregates (tight clumps) or, when combined with aggregates via van der Waals forces, larger agglomerates. The goal of dispersion is to break agglomerates down into primary particles—or at least a stable mix of primary particles and aggregates.

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Leveling Agent
Surface control additives promote film flow and enable a flat, uniform surface. They are categorized by function into leveling agents, substrate wetting agents, and anti-shrinkage additives.

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Defoamer
A bubble is a dispersion of a large amount of insoluble gas (usually air) in a small volume of liquid, forming a heterogeneous system with a significant gas-liquid interface. In paints and inks, foam mainly arises from: Air adsorbed by pigment fillers Reaction bubbles during film solidification Mechanical air entrapment in production or application Release of air from porous substrates during coating Surfactants stabilize foam by preventing film thinning through the Marangoni effect and electrostatic forces. In contrast, defoamers work by being incompatible with the system and having lower surface tension, thereby destabilizing and breaking foam. Common defoamers include mineral oil, organosilicon/fluorosilicone, and non-silicon types.

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Thickener Rheological Additive

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Wetting Agent
Wetting agents are surface-active additives designed to improve the wetting and spreading of liquids on solid surfaces. They help reduce surface tension, enhance substrate coverage, and improve dispersion of pigments and fillers. Widely used in coatings, inks, and industrial formulations, they ensure better uniformity and application performance.

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Matting Agent
Matting agent powder is an additive used to reduce surface gloss and achieve a uniform matte finish. It offers good transparency, stable performance, and wide compatibility in coatings, inks, plastics, and leather applications.

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Hangzhou Godoo Tech Co., Ltd. is a professional additives supplier, having our own technical capabilities and control over the production process, dedicated to serving the global paints, coatings,inks, grease, plastics, agrochemical and oil based drilling fields.

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