Knowde Enhanced TDS
Identification & Functionality
- CASE Ingredients Functions
- Technologies
Features & Benefits
- Product Highlights
BENEFITS
- Low temperature cure
- Broad compatibility
- Water resistance
- Excellent film flexibility
- Excellent adhesion to metal substrates
APPLICATION AREAS
- High solids primer formulations
- Interior can coating formulations
- Low bake conversion varnishes and enamels
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 Aliphatic hydrocarbons Complete Water Insoluble COMPATIBILITY
Acrylic resins Very good Alkyd resins Very good Polyester resins Good Epoxy resins Very good
| Value | Units | Test Method / Conditions | |
| Color | max. 1 | Gardner | — |
| Non-Volatile Content | min. 96 | %wt | — |
| Free Formaldehyde Content | max. 0.3 | % | — |
| Viscosity (25°C) | 2000-3400 | mPa.s | — |
Technical Details & Test Data
- Backbone Polymer Selection
CYMEL U-80 resin contains mainly butoxymethyl functional sites making it a very effective crosslinker for backbone polymer resins containing hydroxyl, carboxyl, and amide functional groups, such as those found on alkyd, polyester and acrylic based resins. CYMEL U-80 resin is hydrophobic in nature and compatible with a wide range of backbone polymers providing films with very good appearance, adhesion and film flexibility properties. The optimum level of CYMEL U-80 resin in a given formulation should be determined experimentally. Depending on the application, 20 to 40%, based on resin solids can be taken as a starting point.
- Catalysis
CYMEL U-80 resin will respond best to sulfonic acid catalysts, like CYCAT® 4040 or the blocked version, CYCAT 4045 catalyst. Generally, 0.5 - 1.0% catalyst solution on total binder solids of the formulation is sufficient to provide good cure for industrial formulations at baking schedules of 20 minutes at 120°C to 160°C. For low temperature cure systems, 20 minutes at 100 to 120°C, 2-3% of CYCAT 4040 catalyst is advised to be used.
- Stability
FORMULATION STABILITY
The stability of formulated systems containing CYMEL U-80 resin can be enhanced by the addition of alcohols, amines or a combination of these. Low molecular weight primary alcohols such as methanol, ethanol, or 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. Package stability can also be enhanced by the use of a blocked acid catalyst such as CYCAT 4045 catalyst. For waterborne systems, a pH of 7.5-8.5 should be maintained to achieve stability.
STORAGE STABILITY
CYMEL U-80 resin has a shelf life of 1440 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 an irreversible increase in viscosity.
Storage & Handling
- Shelf Life
- 1440 Days