CYMEL® 303 LF Resin
- CASE Ingredients Functions
- Crosslinking Agent
CYMEL® 303 LF Resin functions as a crosslinking agent within the CASE Ingredients' monomers and intermediates and chain extenders and crosslinkers categories. Tailored for automotive and transportation and paints and coatings markets, it excels in automotive OEM coatings, offering compatibility with acrylics, alkyds, epoxies (EP), and polyesters. This liquid product, suitable for metal substrates, is specifically designed for waterborne coatings, presenting a clear liquid appearance.
Properties
- Physical Form
- Liquid
Product families
- Chain Extenders & Crosslinkers
Other characteristics
- Brand
- CYMEL
- End Uses
- Waterborne Coating
- Functions
- Crosslinking Agent
- Compatible Polymers & Resins
- Acrylics, Alkyds, Epoxies (EP), Polyesters
- Markets
- Automotive & Transportation
- Paints & Coatings
- Catalysis
Because of its high extent of alkylation, CYMEL 303 LF resin responds best to sulfonic acid catalysts, like CYCAT® 4040 catalyst or CYCAT ® 600 catalyst. Generally, 0.5 to 1.0% of CYCAT® 4040 catalyst on total resin solids of the formulation is sufficient to provide good cure at normal baking schedules (15-20 minutes at 120-150°C) in solvent-borne systems. Water-borne systems generally require temperatures of 150°C or higher to effect cure. Higher concentrations of catalyst might be necessary if there are basic pigments or additives present in the formulation.
- Appearance
- Clear Liquid
- Shelf LIfe
- 1800 Days
- Coating Type
- Waterborne Coating
- Insoluble In
- Water
- Technology
- CASE Ingredients
- Partially Soluble in
- Aliphatic Hydrocarbons
- Backbone Polymer Selection
CYMEL 303 LF resin contains mainly methoxymethyl functional sites making it a highly effective crosslinker for backbone polymer resins containing hydroxyl, carboxyl, or amide functional groups, such as those found on alkyd, polyester, or acrylic resins. Its high monomer content, and low tendency to self-condense result in films with high flexibility and formability when paired with inherently flexible polymers, such as polyester resins. The effective equivalent weight of CYMEL 303 LF is typically 130-190 g/eq, however, its optimum loading should be determined experimentally for each formulation with consideration of the performance properties to be optimized.
Technical data
Table 1 of 1
5 rows| Characteristic | Value | Unit |
|---|---|---|
| Standard Solvent Tolerance | min. 100 | — |
| Color | max. 70 | APHA |
| Non-Volatile Content | min. 98 | %wt |
| Free Formaldehyde Content | max. 0.1 | % |
| Dynamic Viscosity (23°C) | 3000-6000 | mPa.s |
