Polyvion WAR A45 is a self-crosslinking acrylic copolymer emulsion supplied as an aqueous binder for waterborne wood and industrial coating systems. Built on a fine-particle-size acrylic backbone, it delivers excellent in-can and dry-film clarity, high film hardness, fast drying speed, and excellent chemical resistance without relying on APEO surfactants or formaldehyde-based crosslinkers. The product is widely used across wood, plastic, and general industrial coating formulations where a clean, self-crosslinking film-forming resin is required.
Polyvion WAR A45 Overview
Polyvion WAR A45 belongs to the family of self-crosslinking acrylic copolymer emulsions, supplied as a translucent to milky white aqueous dispersion at approximately 40% solids. The fine particle size of the emulsion is what drives its standout in-can and dry-film clarity, an important visual property for clear wood and plastic topcoats where haze or milkiness in the finished film is not acceptable.
Self-crosslinking within the film occurs without an external crosslinker or added formaldehyde donor, since the copolymer is designed to react internally as the film dries and ages. This self-crosslinking mechanism allows Polyvion WAR A45 to build hardness and chemical resistance over time from a single-component system, simplifying formulation compared with externally crosslinked emulsions that require a separate hardener addition. It also reduces pot-life concerns during production, since there is no two-part mixing step or working-time limit to manage once the crosslinker is added.
Key Features
- Self-crosslinking acrylic copolymer chemistry: Polyvion WAR A45 crosslinks internally as the film dries, building hardness and chemical resistance without a separate external crosslinker.
- Fine particle size for outstanding clarity: The emulsion’s small particle size delivers excellent in-can and dry-film clarity, supporting clear finishes on wood and plastic substrates.
- High film hardness with fast drying speed: The product is formulated to dry quickly while building substantial film hardness, supporting efficient production throughput.
- Good sandability and broad substrate adhesion: Films finished with the product sand cleanly and adhere well to a variety of substrates, including wood, ABS, PC, and PVC.
- APEO-free and formaldehyde-free formulation: The emulsion is formulated without alkylphenol ethoxylate surfactants or formaldehyde and its derivatives, supporting cleaner-label waterborne formulations.
Typical Applications
Polyvion WAR A45 is primarily used as the film-forming binder in waterborne wood coatings, where its combination of clarity, hardness, and fast drying speed supports efficient finishing lines without sacrificing visual quality. Its broad substrate adhesion also makes it well suited to plastic coatings on ABS, PC, and PVC components in industrial and consumer goods applications.
Beyond wood and plastic coatings, the product is also applied in general industrial waterborne coatings and protective or decorative coating systems that demand durable, chemically resistant films. For aliphatic polyurethane dispersion options with different film-forming behavior, formulators often evaluate Polyvion WAR A42 alongside this grade to compare stackability and hardness development.
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: Self-crosslinking acrylic copolymer emulsion
- 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 35°C
- Viscosity: 10-500 mPa·s (Brookfield LV, 62#/60 rpm, 25°C)
- Function: Self-crosslinking film-forming binder resin
Self-Crosslinking Acrylic Chemistry
Self-crosslinking acrylic emulsions such as Polyvion WAR A45 are typically formulated with reactive functional monomers, such as acetoacetoxyethyl methacrylate (AAEM)-type comonomers, copolymerized into the acrylic backbone to enable internal crosslinking as the film dries, without requiring an added formaldehyde-based crosslinker or external hardener. As the film forms and ages, these reactive groups continue to react, progressively building film hardness, solvent resistance, and chemical resistance beyond the properties typically achieved immediately after initial coalescence.
Because the emulsion has a moderate minimum film-forming temperature of approximately 35°C, formulators should confirm that application and drying conditions support complete film coalescence at the intended application temperature, adding a coalescing aid where ambient conditions run cooler than the MFFT. As with all self-crosslinking emulsions, the dispersion should be well filtered before use to remove any coagulum 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 emulsion, dosage, pigment volume concentration, coalescing aid selection, and drying and cure conditions all influence final film hardness, clarity, and chemical resistance development. Formulators are encouraged to run a small formulation matrix, adjusting coalescing aid level and cure time, to identify the process window that delivers the target balance of early hardness and long-term film clarity for the intended substrate.
Because the product is formulated APEO-free and formaldehyde-free, it is well suited to cleaner-label formulation strategies increasingly favored in wood and plastic coating specifications. As with all self-crosslinking waterborne resins, 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 A45: Safety & Handling
Polyvion WAR A45 should be handled in accordance with standard industrial hygiene practices for aqueous acrylic emulsions. 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 options, see also Polyvion WAR A42 and Polyvion WAD U90.