Polyisocyanate Hardener R950
Model: R950
Size: 0.8kg/can
Premium polyisocyanate hardener with outstanding heat resistance, excellent yellowing stability, and 7-day hydrolysis resistance. Specially developed for demanding footwear and leather bonding applications.
Key Features
- Outstanding heat resistance
- Excellent yellowing stability
- 7-day hydrolysis resistance
- For footwear and leather bonding
Specifications
| Heat Resistance | Outstanding |
|---|---|
| Hydrolysis Resistance | 7-day resistance |
Related questions
What hardener ratio should I use with two-component PU adhesive?
Typical polyisocyanate hardener ratio is 5–6% by weight of the main glue for water-based PU (e.g. Marichemix 610 + R768 at 5–6%), and 3–5% for solvent-based PU. Always follow the specific product TDS — over-dosing causes brittleness and yellowing; under-dosing causes weak crosslinking and heat-resistance failure. Mixed glue should be used within the recommended pot life (commonly 4–8 hours) and not topped up after that window.
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