Knowde Enhanced TDS
Identification & Functionality
- CASE Ingredients Functions
- Technologies
Features & Benefits
- Product Highlights
BENEFITS
- Fast cure speed
- Good adhesion properties
APPLICATION AREAS
- Acid curing wood coating applications
- General industrial baking applications
Applications & Uses
- Markets
- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
Properties
- Physical Form
- Appearance
- Clear Liquid
- Insoluble in
- Water
- Typical Properties
- Solubility & Compatibility
SOLUBILITY
Alcohol Complete Esters Complete Ketones Complete Aromatic hydrocarbons Partial Aliphatic hydrocarbons Partial Water Insoluble COMPATIBILITY
Acrylic resins Medium Alkyd resins Good Polyester resins Good Nitrocellulose Good Cellulose acetate butyrate Good Polyvinyl butyrate Good
| Value | Units | Test Method / Conditions | |
| Color | max. 50 | APHA | — |
| Non-Volatile Content | 58-62 | %wt | — |
| Free Formaldehyde Content | max. 0.7 | % | — |
| Viscosity (23°C) | 350-600 | mPa.s | — |
Technical Details & Test Data
- Backbone Polymer Selection
CYMEL UI-27-EI resin is a very effective crosslinking agent for backbone polymer resins containing hydroxyl and carboxyl functional groups, such as alkyd, polyester or acrylic resins. CYMEL UI-27-EI resin has a high reactivity and a high tendency for self-condensation. Although the optimum level of CYMEL UI-27-EI resin in a given formulation should be determined experimentally, ratios between 25% and 35%, based on resin solids, are typically most effective in a range of polymer backbone resins
- Catalysis
CYMEL UI-27-EI resin may not require the addition of an acid catalyst to the formulation to obtain effective cure. In many instances, the acidity of the backbone polymer in the formulation is sufficient to catalyze the reaction under normal baking conditions (15-20 minutes at 120-150°C). If catalyst addition is required, then 0.5-1.0% of CYCAT® 4040 catalyst or CYCAT 296-9 catalyst based on total resin solids is recommended. For wood coating formulations cured under ambient conditions, 6-10% CYCAT 4040 catalyst on total resin solids of the formulation is sufficient to obtain fast drying behavior. In one-pack acid curing finishes, weak inorganic acids, such as CYCAT 296-9 catalyst, are strongly recommended.
- Stability
FORMULATION STABILITY
The stability of baking enamels containing CYMEL UI-27-EI resin can be enhanced by the addition of alcohols, amines or combination of these. Low molecular weight primary alcohols, such as n-butanol, are most effective. Recommended amines are TEA, DMEA or 2-AMP at a concentration of 0.5-1.0% on total binder solids. Ambient cure systems are usually stabilized only by addition of adequate amounts of primary alcohol, such as ethanol or n-butanol.
STORAGE STABILITY
CYMEL UI-27-EI resin has a shelf life of 720 days from date of manufacture when stored at temperatures below 32°C. Although low temperatures are not detrimental to stability, the viscosity of the product will increase making the resin more difficult to pump or pour. Product viscosity can be returned to normal by gentle warming, however, care should be taken to avoid excessive localized heating as this can cause polymerization.
Storage & Handling
- Shelf Life
- 720 Days