Knowde Enhanced TDS
Identification & Functionality
- Catalyst Type
- Chemical Family
- Reaction Phase
- CASE Ingredients Functions
- Industrial Additives Functions
Features & Benefits
- Labeling Claims
- CASE Ingredients Features
- Advantages
- Excellent replacement for tin catalysts
- Can be used in ambient, force dry and bake systems
- Excellent gloss retention
- Excellent exterior durability
- Improved hydrolytic stability compared to other bismuth carboxylates
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Coating Type
- Use Level
- 0.1 - 0.5% (as supplied on total resin solids for 2-component polyurethanes), 1 - 2.5% (as supplied on total resin solids for blocked isocyanates)
- Applications
- K-KAT XK-651 is recommended for 2K and blocked isocyanate coatings.
- K-KAT XK-651 can replace many heavy metal and/or toxic catalysts used in the production of urethane elastomers, foams and coatings.
- Incorporation
K-KAT XK-651 can be added directly to a single component blocked isocyanate system or the polyol component of a 2K system.
Properties
- Color
- Physical Form
- Appearance
- Clear, Amber liquid
- Typical Properties
| Value | Units | Test Method / Conditions | |
| % Metal | 25 | % | — |
| Specific Gravity (25°C) | 1.2 | — | — |
Technical Details & Test Data
- K-KAT XK-651 Improved Hydrolytic Stability vs. Competitor Bismuth Carboxylate
The graph below demonstrates improved stability with K-KAT XK-651 compared to a competitive bismuth catalyst in a 2-component urethane system. The graph includes surface dry times of films prepared with catalyzed polyol components that were aged for 5 weeks. The catalyst dosages were based on equal bismuth content on total resin solids (0.2% Bi), and the systems were spiked with 0.1% water based on total resin solids. The results show only a slight increase in the surface dry times of the films prepared with the aged K-KAT XK-651 catalyzed polyol components while the surface dry times of the films catalyzed with the competitor bismuth carboxylate increased significantly.
Polyol Componnt Weight % K-FLEX® XM-359 38.9 PM Acetate 29.95 Flow and leveling agent 0.14 Water 0.07 Isocyanate Component
Hexamethylene diisocyanate biuret 30.94 100 Formulation Characteristics
NCO:OH 1.04 %water spike on total resin solids 0.1 Total Resin Solids, % 69.8 K‐KAT®XK‐651 vs. Competitor Bi Carboxylate
Storage & Handling
- Shelf Life
- 24 months
- Storage/Shelf Life
- Safe handling of this product should include the use of a respirator, safety glasses and gloves.
- Avoid breathing vapors - use with adequate ventilation.
- K-KAT XK-651 is sensitive to moisture, therefore, exposure to atmosphere during storage should be avoided.
- Product should be stored in a cool, dry environment away from sunlight and excessive heat.
- 24 months from the date of manufacture, when stored at ambient conditions in the original container.