Polyaspartic polyurea resin FEISPARTIC F421

Ⅰ Chemical formula and molecular weight
● Chemical Name: Aspartic Acid, N,N’-(methylenedi-4,1-cyclohexanediyl)bis-,1,1’,4,4’-tetraethyl ester
● ELINCS No.: 429-270-1
● CAS No.: 136210-30-5
Ⅱ Properties and application
●F421 is a solvent free amine-functional resin.. It is a aspartic ester polymer as reactive partner for polyisocyanates. It’s the same model as NH1420, formulate high-solids, two-component polyurethane topcoats and solvent-free coating materials.Comparing Feiyang F420, F421 potlife is much longer.
● It can serve as chain extender or R component in polyurea coating. It can also react with –NCO functional HDI trimmer from which a longer gelling time and excellent yellow resistance can be achieved. Longer gelling time can also be obtained when reacted with MDI pre-polymer. Hybrid of polyurea and polyurethane can be achieved when F421 is blended with hydroxyl-functional resin e.g acrylic, alkyd. This can offer high solid content and faster dry time than ordinary polyurethane. It is widely used in protective /floor / elastic/weather resistant coating, waterproof, etc.
● Main Feature 1. High solid content with low viscosity. 2. Faster curing time in aliphatic system. 3. Offering excellent physical properties like high hardness, flexibility, elongation(400%), tear and tensile strength(25MPa). 4. Great weather and saline water resistance. 5. Cost efficiency.
ⅢQuality standard
Item	Specifications
Molecular Weight	554
Appearance	Transparent liquid
Solid Content	97%±2%
Amine value(mg KOH/g)	180-210
Amine Equivalent（g/mol）	277
Hydroxyl value Equivalent	6.13-6.14
Viscosity mpa.s/25℃	900-1200
Relative density(25℃)	1.06
Flash Point(/℃)	90-95
Ⅳ Package and storage
● 200KG/Drum, 4Drums/pallets, 80Drums/container or 1Ton/IBC tank, 20IBC tank/container.
● F421 resin must be stored in tightly sealed containers to prevent contact with moisture. Recommended storage temperatures are 0°-40°C (32°-104°F). The shelf life of this product is 12 months when stored in closed original containers at 77°F (25°C).