“Hydrolysis resistance” is meaningful only when the test condition and acceptance criterion are defined. Use this guide to structure the technical information required before material screening.
A hydrolysis-resistance request should include the test method, temperature, humidity or immersion condition, duration and acceptance criterion. Without those conditions, the same phrase can describe very different project requirements.
| Model | Current documented positioning | How to use the information |
|---|---|---|
| RU-6720 | The current TDS documents hydrolysis resistance together with abrasion, scratch, aging and yellowing resistance for a top-coat-oriented aliphatic PUD. | Consider when the project is a top-coat / finishing discussion and the customer also provides a defined hydrolysis test requirement. |
| RU-6880 | The current TDS documents hydrolysis resistance together with matte positioning, abrasion, scratch and cold resistance for a polycarbonate-based aliphatic PUD. | Consider when hydrolysis resistance must be evaluated together with a matte surface target and the other documented requirements. |
The website does not assign a universal hydrolysis grade because final performance depends on the complete customer system and the actual test method.
Crosslinkers, pigments, matting systems, other additives and blend ratios can change the final coating performance.
Film build, drying / curing, substrate preparation and test conditioning can also affect the final result.
No. The requested test condition and pass/fail criterion should be defined before meaningful comparison.
RU-6720 and RU-6880 currently list hydrolysis resistance among their documented performance directions.
No. Finished performance depends on the complete coating system, substrate, process and test method.
Include the test method, exposure condition, duration, acceptance criterion, substrate and coat position so the initial material screen can be more meaningful.
FAST current catalog data identifies hydrolysis-resistance directions in selected topcoat and polycarbonate-based matte grades. These are starting points only; final results depend on the full formulation and test method.
Current product data includes hydrolysis resistance together with abrasion, scratch, cold, yellowing resistance and soft hand.
View RU-6720 →Polycarbonate-based matte grade with documented abrasion, scratch, hydrolysis, cold, leveling and soft-film directions.
View RU-6870 →Polycarbonate-based matte grade with documented abrasion, scratch, hydrolysis, cold, leveling and operational-stability directions.
View RU-6880 →