BECKOCOAT® PU 428/51XMPAC

Is a one-component polyurethane resin designed for various coating applications, particularly where rapid curing, radiant brilliance, and superior abrasion resistance are required. Here's a breakdown of its properties and suggested uses:

Type: Light stabilized, oil-free, moisture curing one-component polyurethane resin.

Form of Delivery (f.o.d.): 51% in xylene/methoxypropyl acetate (51XMPAC).

Special Properties and Use:

• Rapid curing.
• Radiant brilliance.
• Superior abrasion resistance.
• Outstanding impact resistance and excellent adhesion.
• Suitable for floor sealers, wood coatings, concrete impregnation, and as a crosslinker for alkyd resins in two-component systems.

Product Data:

• Dynamic Viscosity: 290 - 590 mPa.s (25 1/s; 23°C)
• Iodine Colour Number: <= 2
• Non-Volatile Matter: 49 - 53% (120°C; 5 min)
• Isocyanate Content: 3 - 5%
• Density (Liquids): 1.03 g/cm³ (20°C)
• Flash Point: 32°C

Suggested Uses:

• Ideal for concrete sealers, impregnation, and non-slip coatings.
• Suitable for coatings resistant to fuel oil and abrasion, such as those used in garages.
• Recommended for coatings in laboratories, chemical factories, wooden floors subject to heavy wear, sports articles, and more.

Processing:

• Can be applied by brush, roller, rubber wiper, or spray gun.
• Dilution with compatible solvents may be necessary for certain applications.
• Can be used in two-component systems in combination with alkyd resins.

Film Properties:

• Cures by reaction with air humidity.
• Curing rate depends on film thickness, temperature, and humidity.
• Excellent adhesion to various substrates, including hardboard, chipboard, wood, concrete, and cured unsaturated polyesters.
• Recoating possible after 6 - 8 hours at 23°C.
• Storage stability packed in original containers is at least 365 days at temperatures up to 25°C.

Special Indications:

• Use dry and dense containers for storage to prevent premature curing.
• Avoid using containers with traces of alkali, as they may cause gelation.
• Pre-testing recommended due to potential issues with substrate variety and condition.