AgeSin® RH-A4425 is a liquid rheological additive designed for waterborne systems. It builds a reversible rheological network through intermolecular hydrogen bonding, precisely regulating in-can viscosity, providing long-term anti-settling performance, and significantly improving anti-sagging properties. Its rheological performance is not affected by pH, and it does not compromise gloss or transparency. Suitable for a wide range of waterborne coating formulations.
AgeSin® RH-A4425
(Liquid rheological additive,alternative to RHEOBYK-425 TF)
Equivalent alternatives: RHEOBYK-425 TF
| 检验项目 (Item) | 指标要求 (Specification) |
| 化学组成 (Composition) | Modified polyurea polyurethane solution |
| 外观 (Appearance) | Yellow to brown liquid |
| Density (g/cm³, 23°C) | 0.8–1.2 |
| Viscosity (cps, 25°C) | 200–3000 |
| 溶剂 (Solvent) | Polypropylene glycol |
| Non-volatile content (%) | ≥50 |
This datasheet is intended to give typical results, not standard.Subject to COA.
AgeSin® RH-A4425 is a liquid rheological additive designed for waterborne systems. It builds a reversible rheological network through intermolecular hydrogen bonding, precisely regulating in-can viscosity, providing long-term anti-settling performance, and significantly improving anti-sagging properties. Its rheological performance is not affected by pH, and it does not compromise gloss or transparency. Suitable for a wide range of waterborne coating formulations.
Wood/Furniture waterborne coatings: clear varnishes, pigmented primers, matte topcoats, outdoor wood coatings.
Architectural waterborne coatings: interior wall latex paints, exterior weatherable coatings, textured finishes, putty.
Urea groups form reversible hydrogen-bonding networks with waterborne resin emulsions and pigment particles
Typical pseudoplastic rheology: high viscosity at low shear (anti-settling), rapid viscosity drop at high shear (smooth application), quick recovery (anti-sagging)
APEO-free, low VOC
★Special attention: Due to strong rheological efficiency, may cause sharp viscosity increase. Pre-dilution is recommended if needed.
High viscosity at low temperature; pre-dilution can reduce viscosity. Storage stability of diluted solutions should be tested individually.
Storage may show slight turbidity, which does not affect rheological performance.
AgeSin® RH-A4425 should be added to the coating system under moderate shear force to ensure uniform mixing and rapid dispersion. No special temperature control is required. It can be added during the grinding stage or post-added to adjust viscosity. If suitable for the system, a significant increase in rheological effect will occur, depending on time and polarity. Rheological effects can generally be evaluated 2–4 hours after mixing.
0.2%-5% additive dosage based on total formula to prevent sedimentation.
0.5%-1% additive dosage based on total formula to prevent sagging, but this depends on the overall solid content of the formula.
● 25Kg /180KG Drum
存放在干燥、阴凉、通风良好的库房内。
避免阳光直射和高温暴晒。
Can be stored for 24 months in the original packaging.
