Knowde Enhanced TDS
Identification & Functionality
- CASE Ingredients Functions
- Technologies
Features & Benefits
- Product Highlights
BENEFITS
- Fast cure response
- Low formaldehyde release
- No strong acid catalyst requirement
- Superior stain, water and corrosion resistance properties
- Good flow, leveling and wetting properties
APPLICATION AREAS
- Automotive enamels
- General Industries enamels
- Coil coatings
- Primers
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
- Coating Type
Properties
- Physical Form
- Appearance
- Clear Liquid
- Insoluble in
- Water
- Typical Properties
- Solubility & Compatibility
SOLUBILITY
Alcohol Complete Esters Complete Ketones Complete Aromatic hydrocarbons Complete Glycols Complete Glycol ethers Complete Water Insoluble COMPATIBILITY
Acrylic resins Very good Alkyd resins Very good Polyester resins Very good Epoxy resins Very good
| Value | Units | Test Method / Conditions | |
| Solvent | N-butanol | — | — |
| Color | max. 1 | Gardner | — |
| Non-Volatile Content | 80 ± 2 | %wt | — |
| Free Formaldehyde Content | max. 1 | % | — |
| Viscosity (25°C) | W-Z1 | — | — |
Technical Details & Test Data
- Backbone Polymer Selection
CYMEL 254 resin will react with hydroxyl, amide, carboxyl and thiol functional polymers or resins. Similar to other melamine resins, it not only crosslinks with the above functionalities, but also self-condenses readily.
- Catalysis
CYMEL 254 resin responds to catalysis by weak acids. For acceptable cure response at baking temperatures above 125℃, in most instances the carboxyl functionality of the other resins in a formulation would be an adequate catalyst. If catalyst addition is found to be necessary, then virtually any soluble acid would be effective. Normally, phosphate esters, or sulfonic acids are recommended. The acid concentration would have been determined for each system.
- Stability
FORMULATION STABILITY
The stability of formulated systems containing CYMEL 254 rein can be enhanced by the addition of alcohols, amines or a combination of these. Low molecular weight primary alcohols such as methanol and n-butanol are most effective. Recommended amines are tertiary amines such as tri-ethylamine of dimethyl ethanolamine at a concentration of 0.5-1.0% on total binder solids.
STORAGE STABILITY
CYMEL 254 resin has a shelf life of 1 year from the date of manufacture when stored at temperatures between 5°C and 30°C packed in unopened original containers .CYMEL 254 resin must be kept indoors and avoided the direct sunlight exposure. Although lower temperatures are not detrimental to stability, its viscosity will increase, possibly making the resin difficult to pump or pour. The viscosity will reduce again on warming, but care should be taken to avoid excessive local heat as this can cause an irreversible increase in viscosity.
Storage & Handling
- Shelf Life
- 1 year