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NACURE® SUPER - Latent Catalysts
for the Thermal Cure of Epoxy Resin Systems
King has developed NACURE Super catalysts for the thermal cure of epoxy resins; and NACURE metal chelates for the epoxy-carboxy or epoxy-anhydride crosslinking reaction.
These catalysts permit the formulation of room temperature, stable, heat reactive coatings, which offer the following advantages:
- Formaldehyde-free formulations
- Up to 100% solids
- Cure as low as 80°C
- No volatile reaction products
- Low shrinkage
- High chemical resistance
- Excellent mechanical properties
NACURE SUPER
The NACURE Super catalysts are based on very strong acids, such as hexafluoroantimonate or triflic acid and can be used in conjunction with cycloaliphatic epoxies, glycidyl ester and glycidyl ether resins.
Polymerization of the epoxy resin occurs via a cationic mechanism, thus allowing reaction with hydroxyl, lactone, oxetane or vinyl functional groups. High solids or solventless coatings for high speed or low temperature applications can be obtained using this technology.
NACURE Super catalysts are formulated for use in solventfree, high solids and waterborne coatings. Catalysts based on hexafluoroantimonate (XC-7231) cannot be used in waterborne systems.
NACURE® Super Catalysts for Epoxy Polymerization |
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PRODUCT |
Composition |
% |
Form |
Typical Use |
Attributes/Uses |
Technical |
NACURE SUPER |
Metal Salt of |
25 |
Clear Liquid |
0.1 - 2% |
Catalyst for various ring opening polymerization reactions, electronic encapsulations, castings and WB epoxy dispersions |
 |
NACURE SUPER |
Metal Salt of |
25 |
Clear Liquid |
0.01 - 3% |
Catalyst for various ring opening polymerization reactions, electronic encapsulations, castings, 2K coatings |
|
NACURE SUPER |
Ammonium |
100 |
White Crystals |
0.01 - 3% |
Cationic heat cure of inks, adhesives and coatings. |
|
NACURE SUPER |
Amine Salt of |
60 |
Amber Liquid |
0.01 - 3% |
Cationic heat cure of inks, adhesives and coatings |
|
NACURE SUPER |
Ammonium |
100 |
White Crystals |
0.01 - 3% |
Cationic heat cure of inks, adhesives and coatings, cycloaliphatic resins - cure temperature > 80°C |
|
NACURE for Epoxy-Carboxyl Curing |
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NACURE |
Metal Chelate |
— |
Tan/Clear Liquid |
0.03 - 3% |
Thermal cured epoxy-carboxyl or epoxy-anhydride reactions. Automotive clearcoats, can and coil coatings. Cure temp. >120°C |
|
NACURE |
Metal Chelate |
50 |
Clear Amber Liquid |
0.01 - 4% |
Catalyst for automotive clearcoats, can and coil coatings. Cure temperatures >120°C |
|
* Typical Use Levels - Catalyst solids on total resin solids |
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