Polyvion ISO-M 14 is a modified aromatic polyisocyanate based on toluene diisocyanate (TDI) adduct chemistry, supplied as a solvent-based solution for fast-drying two-component polyurethane coatings. Formulated at approximately 50% solids in butyl acetate, it delivers very rapid initial drying and early sandability, making it a preferred hardener for high-throughput wood and furniture finishing lines. The product is widely used across industrial coatings, wood and furniture coatings, and general two-component polyurethane systems where fast turnaround is essential.
Polyvion ISO-M 14 Overview
Polyvion ISO-M 14 belongs to the family of modified aromatic polyisocyanates, in which TDI monomer is reacted and adducted into a resin-type structure rather than left as a simple isocyanurate trimer. This adduct chemistry is specifically engineered to promote very rapid initial film formation and early sandability, properties that are highly valued in wood and furniture production lines where coated parts must be handled, stacked, or sanded again soon after application.
Supplied as a solution in butyl acetate, the product is ready to use as the hardener component in two-component systems, requiring only combination with a suitable hydroxyl-functional resin and standard solvent letdown to build a sprayable coating. Because the chemistry is aromatic, the product is best suited to interior wood and furniture applications rather than exterior or UV-exposed substrates where long-term color stability is required.
Key Features
- Modified TDI adduct chemistry: Polyvion ISO-M 14 is engineered as a TDI-based adduct resin, distinct from simple isocyanurate trimers, to promote very rapid initial drying.
- Very rapid initial drying: The product supports fast set-to-touch and early handling strength, helping formulators maximize line speed on wood and furniture coating lines.
- Early sandability: Films cured with the product can typically be sanded sooner than with conventional hardeners, supporting tight production schedules in multi-coat finishing systems.
- Solvent-based, spray-ready supply form: Supplied at approximately 50% solids in butyl acetate, the product is formulated for straightforward incorporation into finished two-component coatings.
- Reliable two-component crosslinking: Polyvion ISO-M 14 supports consistent film build and hardness development across a range of hydroxyl-functional resin systems.
Typical Applications
Polyvion ISO-M 14 is primarily used as the hardener component in fast-drying two-component polyurethane coatings for wood and furniture finishing, where very rapid initial drying and early sandability directly support production throughput. Its TDI adduct chemistry makes it particularly well suited to multi-coat interior finishing systems where each coat must be sanded and recoated on a tight schedule.
Beyond wood and furniture coatings, the product is also applied in general industrial coatings and other two-component polyurethane systems that prioritize fast turnaround over long-term outdoor color stability. For general-purpose fast-drying TDI trimer alternatives, formulators often evaluate Polyvion ISO TT350 alongside this grade to compare cure profile and sandability.
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: Modified aromatic polyisocyanate (TDI adduct)
- Base chemistry: TDI-based adduct resin
- Supply form: Solution in butyl acetate, approximately 50% solids
- NCO content: To be confirmed based on the final specification sheet.
- Viscosity: To be confirmed based on the final specification sheet.
- Color: To be confirmed based on the final specification sheet.
- Function: Curing agent / hardener for fast-drying two-component PU coatings
TDI Adduct Chemistry & Fast-Drying Performance
Unlike simple isocyanurate trimers, modified TDI adducts such as Polyvion ISO-M 14 are built through a reaction sequence that adjusts molecular weight distribution and functionality specifically to accelerate early film formation. This gives coatings formulated with the product a distinct advantage in production settings where each part must reach handling or sanding strength quickly, rather than optimizing for maximum outdoor durability or the lowest possible viscosity.
Because the product is aromatic, it is not the preferred choice for coatings requiring long-term UV color stability; formulators targeting exterior or highly UV-exposed substrates should evaluate aliphatic HDI-based alternatives instead. As with all TDI-based hardeners, the product is moisture-sensitive and should be protected from humidity during storage and handling, since reaction with water generates carbon dioxide and can compromise film quality or cause gassing in closed containers.
Storage Recommendations
- Store in the original, tightly closed container, protected from moisture, heat, and foreign material.
- Storage at higher temperatures will increase color and viscosity over time; store in a cool, dry area.
- Shelf life: To be confirmed based on the final specification sheet.
- Protect from direct sunlight during storage and transport.
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): Mandatory prior to handling
- Labels: Prepared in accordance with applicable regulations
- Industrial and professional use only
Formulation Guidance
When formulating two-component coatings with this curing agent, the NCO:OH stoichiometric ratio, resin selection, and drying conditions all influence pot life, initial dry time, sandability, and final film hardness. Formulators are encouraged to run a small formulation matrix, adjusting stoichiometry and solvent blend, to identify the process window that delivers the target balance of fast initial drying and long-term film performance for the intended substrate.
Because the product is supplied as a solvent-based solution, solvent selection at the letdown stage should favor PU-grade solvents free of reactive hydroxyl or amino groups and low in water content, to preserve pot stability and avoid premature gelation. As with all TDI-based hardeners, moisture exclusion during storage, mixing, and application is critical to achieving consistent film quality.
Packaging & Logistics
- Packaging: Approved industrial packaging
- MOQ: Subject to packaging configuration
- Lead time: Indicative lead time, to be confirmed upon order acceptance
- Incoterms: Quoted case by case
Polyvion ISO-M 14: Safety & Handling
Polyvion ISO-M 14 should be handled in accordance with standard industrial hygiene practices for aromatic polyisocyanate hardeners. 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, since isocyanate vapors and mist can present respiratory and skin sensitization hazards if ventilation is inadequate. As with all curing agents, small-scale compatibility and cure 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 curing agent options, see also Polyvion ISO TT350 and Polyvion ISO-M 13.