Knowde Enhanced TDS
Identification & Functionality
- CASE Ingredients Functions
- Technologies
Features & Benefits
- Product Highlights
BENEFITS
- High film build
- Low odor
- Fast drying
- Excellent block resistance
- Low formaldehyde release
APPLICATION AREAS
Acid curing wood coating 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 | 78 ± 2 | %wt | — |
| Free Formaldehyde Content | approx. 0.5 | % | — |
| Viscosity (23°C) | 1700-3500 | mPa.s | — |
Technical Details & Test Data
- Backbone Polymer Selection
CYMEL UI-20-E resin is a very effective crosslinking agent for backbone polymer resins containing hydroxyl functional groups, such as alkyd, polyester or acrylic resins. CYMEL UI-20-E resin has high reactivity and a high tendency for selfcondensation providing fast drying films with good gloss, hardness and block resistance. The optimum level of CYMEL UI-20-E resin in an acid curing wood coating formulation should be in the range of 25-35% on total resin solids. To obtain formulations with optimum resistance properties, addition of a melamine resin, such as CYMEL MB 98 resin, at levels of 5-10% on total resin solids is recommended.
- Catalysis
CYMEL UI-20-E resin responds best to sulfonic acid catalysts, like CYCAT® 4040. Generally, 6-10% CYCAT 4040 catalyst on total binder solids of the formulation is sufficient to obtain fast drying behavior at room temperature.
Storage & Handling
- Shelf Life
- 24 months
- Pot Life
To extend catalyzed pot life of the formulation, addition of primary alcohols, such as n-butanol, ethanol, and methanol, is required at concentrations of 10- 25% on total resin solids. Faster evaporating alcohols will improve speed of dry
- Stability
STORAGE STABILITY
CYMEL UI-20-E resin has a shelf life of 24 months from date of manufacture when stored at temperatures between 5°C and 30°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 re-warming, however, care should be taken to avoid excessive localized heating as this can cause an irreversible increase in viscosity.