Polyvion WAR A42 is an aliphatic polyurethane dispersion supplied as an aqueous binder for waterborne wood coating systems. Formulated free of alkylphenol ethoxylates, solvent, and tin catalysts, it is designed to deliver fast drying, high hardness, and excellent stackability in clear and pigmented finishes for both interior and exterior wood substrates. The product is widely used across furniture, flooring, and general industrial waterborne coating formulations where a clean, high-performance film-forming resin is required.
Polyvion WAR A42 Overview
Polyvion WAR A42 belongs to the family of aliphatic polyurethane dispersions (PUDs), supplied as a translucent to milky white aqueous dispersion at approximately 40% solids. The dispersion is neutralized with a small amount of triethylamine, a standard neutralizing agent used to stabilize anionic PUD particles in water, and is preserved with a conventional isothiazolinone-based biocide package to support in-can stability during storage and transport.
Because the polyurethane backbone is aliphatic rather than aromatic, films formed from Polyvion WAR A42 resist yellowing and maintain clarity over time, which is an important requirement for clear wood finishes where color stability and light transmission are visually critical. The product is supplied ready to use as a single-component aqueous dispersion, simplifying incorporation into finished waterborne coating formulations.
Key Features
- Aliphatic polyurethane dispersion chemistry: Polyvion WAR A42 is built on an aliphatic PUD backbone, supporting good color retention and clarity in clear wood coating applications.
- Fast drying with high film hardness: The product is formulated to dry quickly while building substantial film hardness, supporting efficient production throughput on furniture and flooring lines.
- Excellent stackability: Coated wood substrates finished with the product can be stacked soon after coating without blocking or marring, a key handling requirement in furniture manufacturing.
- Alkylphenol ethoxylate free, solvent-free, and tin-free: The dispersion is formulated without APEO surfactants, organic solvent, or tin catalysts, supporting cleaner-label waterborne formulations for professional and industrial use.
- Good film building: The product supports good build in a single coat, helping formulators achieve target film thickness and coverage with fewer application passes.
Typical Applications
Polyvion WAR A42 is primarily used as the film-forming binder in waterborne wood coatings for both interior and exterior applications, where fast drying, high hardness, and good stackability directly support production efficiency. Its aliphatic chemistry makes it particularly well suited to clear topcoats and sealers where color stability and gloss retention over time are visual priorities.
Beyond wood coatings, the product is also applied in furniture finishing and parquet or flooring systems that demand durable, fast-turnaround waterborne films, as well as in general industrial waterborne coating formulations. For self-crosslinking waterborne resin options with different film-forming behavior, formulators often evaluate Polyvion WAR A45 alongside this grade to compare hardness development and chemical resistance.
Technical Specifications
The product is characterized by the following indicative technical parameters; confirmed values will be provided in the final product specification sheet.
- Chemical type: Aliphatic polyurethane dispersion (PUD)
- Appearance: Translucent to milky white
- Supply form: Aqueous dispersion
- Weight solids: 39-41 wt%
- pH: 7.0-9.0
- MFFT (minimum film-forming temperature): Approximately 48°C
- Viscosity: 10-500 mPa·s (Brookfield LV, 62#/30 rpm, 25°C)
- Function: Film-forming binder resin for waterborne wood coatings
Dispersion Chemistry & Film Formation
As an anionic aliphatic polyurethane dispersion, Polyvion WAR A42 relies on neutralized carboxylic acid groups along the polymer backbone to keep polymer particles stably dispersed in water. During drying, water evaporates and the dispersed polyurethane particles coalesce into a continuous film; because the product carries a relatively high minimum film-forming temperature of approximately 48°C, formulators should confirm that application and drying conditions, or the addition of an appropriate coalescing aid, support complete film formation at the intended application temperature.
The single-component, physically drying nature of the dispersion means no separate crosslinker is required to achieve a functional film, though formulators seeking enhanced chemical or scratch resistance may evaluate compatible external crosslinkers as part of the overall system design. As with all waterborne PUDs, the dispersion should be well filtered before use to remove any coagulum that may have formed during storage or handling.
Storage Recommendations
- Store in dry conditions above 5°C and below 35°C with packaging integrity maintained.
- Protect from direct sunlight and from freezing during storage and transport.
- Shelf life: 12 months from production; performance assessment is recommended before use beyond this period.
- Use up promptly once opened; well filtration before use is recommended, as with any waterborne binder.
Documentation & Compliance
Each shipment of the product is supported by standard quality and compliance documentation to help customers manage incoming inspection, formulation approval, and downstream regulatory reporting.
- Certificate of Analysis (COA): Provided per batch
- Safety Data Sheet (SDS): Available upon request
- Labels: Prepared in accordance with destination regulations
- Industrial and professional use only
Formulation Guidance
When formulating with this dispersion, dosage, pigment volume concentration, coalescing aid selection, and drying conditions all influence final film hardness, clarity, and stacking performance. Formulators are encouraged to run a small formulation matrix, adjusting coalescing aid level and dry time, to identify the process window that delivers the target balance of early hardness and long-term film clarity for the intended wood substrate.
Because the product is supplied solvent-free and tin-free, it is well suited to lower-VOC and reduced-heavy-metal formulation strategies increasingly favored in furniture and flooring coating specifications. As with all waterborne PUDs, compatibility with pigments, other resins, and additives should be confirmed through bench trials before scale-up to production volumes.
Packaging & Logistics
- Packaging: Standard industrial packaging
- MOQ: Subject to packaging configuration
- Lead time: Indicative lead time, to be confirmed upon order acceptance
- Incoterms: Quoted case by case
Polyvion WAR A42: Safety & Handling
Polyvion WAR A42 should be handled in accordance with standard industrial hygiene practices for aqueous polyurethane dispersions. Users are advised to review the Safety Data Sheet prior to handling and to implement appropriate personal protective equipment and engineering controls as specified therein. As with all waterborne resins, small-scale compatibility and application trials are recommended before full-batch formulation to confirm performance in the target system.
Safety Data Sheet and destination-compliant labeling information for the product are available upon request. For related waterborne resin and rheology options, see also Polyvion WAR A45 and Polyvion WAD U90.