OMG Borchers Borchi Gel 0434 is a non-ionic polyurethane associative thickener (HEUR) for waterborne coatings. It is a liquid with excellent thickening efficiency in high shear range, improving ICI viscosity, flow, leveling and hiding power, reducing roller spattering, solvent-free, APEO-free, tin-free, VOC-free, eco-compliant, compatible with multiple emulsions
Efficient medium-shear thickening - Powerful thickening in medium shear range, stable rheological properties
Eco-compliant & residue-free - VOC-free, APEO-free, organo-tin-free, non-yellowing film
Flexible addition process - Can be added at any stage of formulation, suitable for various production processes
Easy addition & wide compatibility - Excellent compatibility with multiple emulsion systems
Stable storage & good application - Improves coating storage stability, optimizes brush/roller application feel
Waterborne decorative coatings - Optimize medium-shear viscosity, improve brush/roller application stability
Waterborne industrial coatings - Enhance rheological properties, suitable for various applications, improve film quality
Waterborne adhesives - Regulate system viscosity, improve coating performance and stability
Waterborne wood coatings - Improve leveling, avoid floating, enhance film fullness
Waterborne inks - Optimize rheological properties, improve printability and ink layer uniformity
| Chemical Type | Non-ionic polyurethane associative thickener (HEUR) |
| Appearance (20℃) | High-viscosity milky white liquid |
| Active Ingredient | 34-38% (Polyurethane system) |
| Ionic Type | Non-ionic |
| Density (23℃) | 1.02-1.06 g/cm³ |
| pH Value (20℃) | 5.5-7.5 |
| Viscosity (23℃) | Max. 10000 mPa·s |
Q1: What type of rheology modifier is Borchi Gel 0434?
A: Borchi Gel 0434 is an organically modified bentonite (OMB) clay-based thickener designed to provide efficient yield value and suspension stabilization in non-aqueous and low-polarity systems, such as solvent-borne coatings, printing inks, and industrial maintenance products.
Q2: How is Borchi Gel 0434 typically activated or dispersed?
A: It requires activation with polar activators—commonly alcohols (e.g., isopropanol or ethanol) or amines—followed by high-shear mixing. Pre-gelation in a suitable carrier solvent prior to addition into the final formulation is recommended for optimal dispersion and performance.
Q3: Is Borchi Gel 0434 compatible with ester- or ketone-based solvents?
A: Yes, it demonstrates good compatibility and thickening efficiency in medium-to-low polarity solvent systems, including acetates, ketones, and aromatic hydrocarbons. Performance may vary depending on solvent polarity and presence of co-solvents or reactive components.
Q4: Can Borchi Gel 0434 be used in high-solids or low-VOC formulations?
A: Yes—it is well-suited for high-solids applications due to its high efficiency at low dosage levels and ability to deliver robust sag resistance without significantly increasing VOC content. Its organophilic nature supports compatibility in reduced-solvent systems where rheological control is critical.
Q5: Does Borchi Gel 0434 offer storage stability benefits in pigmented systems?
A: Yes—its thixotropic structure helps prevent pigment settling and hard packing during storage, especially in vertical containers or long-term static conditions. This contributes to improved batch-to-batch consistency and reduced re-dispersion effort before application.
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