Technical Data Sheet
| Document | RY-TDS-701 |
|---|---|
| Revision | Rev. 1.0 |
| Issue date | July 2026 |
| Status | Issued |
Rayson UraForce · Polyurethane finishes
Rayson UraForce SB72 is a two-component, solvent-based polyurethane floor finish that holds its colour and high gloss under strong UV while resisting abrasion and a broad range of chemicals.
UraForce SB72 pairs a pigmented polyester polyol base with an aliphatic polyisocyanate hardener — the chemistry that keeps polyurethane finishes bright outdoors. Where epoxies chalk and yellow, SB72 retains colour and high gloss under strong ultraviolet exposure.
Finish.
Figure 1 — Typical system build-up (top to bottom). Layer thicknesses are system-dependent; confirm the specification for your project.
| Surface preparation | New concrete floors should be cured a minimum of 28 days and dried below the stated moisture limit, with the surface free of laitance for adequate adhesion. Prime and allow the primer to cure fully; efficient sealing of the concrete is essential to minimise defects in the finishing coat. |
|---|---|
| Mixing / dilution | Mix ratio 3:1 (A:B) by weight; add all of Part B to the Part A container and mix with an electric mixer until homogeneous; do not dilute with thinner; pot life 8 hours at 25 °C |
| Application method | Fine smooth lamb wool roller |
| Coverage | Material consumption 0.10 L/m² per coat |
| Application conditions | Confirm application temperature and humidity limits with the Rayson technical team. |
| Drying & curing | Foot traffic 8 h at 25 °C; vehicular traffic 48 h; full chemical resistance 7 days. Recoat window 8–48 hours at 25 °C |
| Recoat interval | Approximately 8–48 hours at 25 °C; allow longer before the second coat in cool weather. |
| Film / thickness | Thin roller finish in the order of 35 µm per coat. |
| Pack sizes | Part A 4.5 kg can + Part B 1 kg can |
| Storage | Store in a cool, dry place. |
| Shelf life | Approximately 12 months for the base and 6 months for the hardener, unopened. |
Figure 2 — Application workflow. Each stage is a hold point: confirm the previous stage is complete and within specification before proceeding.
UV-stable coloured floor system
Solvent-based product — flammable. Ensure good ventilation, keep away from ignition sources, and wear gloves, eye and respiratory protection. Avoid skin and eye contact. Keep out of reach of children. Consult the Safety Data Sheet (in preparation) before use.