BECKOCOAT® PU 428/51XMPAC

Lightly stabilized, oil-free, moisture-curing one-component polyurethane resin

Properties and Uses

Ideal as a primer for 2-component PU and polyester on various surfaces.

• Fast curing - Radiant brilliance coating
• Superior wear resistance - Excellent impact resistance
• Excellent adhesion on various surfaces
• Floor sealer, wood coating, concrete impregnation
• Suitable as a topcoat for alkyd resins in two-component systems

Applications

This extremely wear-resistant coating is ideal for:

• Industrial floors and coatings
• Concrete coatings resistant to fuel and oil
• Garage floors and workshops
• Laboratories and chemical plants
• Heavy wear environments such as bowling alleys, roller skating rinks
• Gymnastics halls and schools
• Bowling alleys, billiard tables, hockey floors

Application as a primer

When used as a primer for GRP (glass reinforced polyester), 250 grams of primer is typically used per m² of substrate.

Multiple coats may be necessary for very absorbent surfaces.

As with all primers, this primer should be applied extremely thinly to ensure good adhesion and a bubble-free finish.

The curing time of this primer depends largely on the substrate temperature, humidity and thickness of application.

At 20oC with a humidity of 50% and an applied thickness of 200 micrometers (brush thickness or roller thickness):

• Dust-free after 40 minutes
• Stick-free / dry after 180 minutes
• Strong and workable after 24 hours
• Fully cured after 7 days

At lower temperatures or lower humidity times will increase.

If a thicker layer is desired, multiple layers can be applied on top of each other. The next layer can be applied after 6 to 8 hours at room temperature.

Do not allow more than 24 hours of drying time between coats or between the final coat and the material to be primed (such as polyester). If the drying time is too long, the adhesion will not be adequate.

Technical Specifications

• Form: 51% in xylene/methoxypropyl acetate (51XMPAC)
• Viscosity: 290-590 mPa.s (DIN EN ISO 3219)
• Color: < 2 (DIN 6162)
• Volatile substances: 49-53% (DIN ISO 3251)
• Density: 1.03 g/cm³ (DIN ISO 2811-2)
• Flash point: 32°C (DIN EN ISO 1523)

Compound

• Xylene: 26-29% (CAS 1330-20-7)
• 1-Methoxy-2-propanol acetate: 11-13% (CAS 108-65-6)
• Ethylbenzene: < 10% (CAS 100-41-4)

⚠️ SAFETY INFORMATION

DANGER - Always follow safety instructions

Signal word: DANGER

Hazard symbols:

⚠️ SAFETY INFORMATION

DANGER - Always follow safety instructions

Signal word: DANGER

H-phrases (Hazard statements):

• H226: Flammable liquid and vapour
• H351: Suspected of causing cancer
• H332: Harmful if inhaled
• H373: May cause damage to organs through prolonged or repeated exposure
• H335: May cause respiratory irritation
• H315: Causes skin irritation
• H319: Causes serious eye irritation.
• H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
• H317: May cause an allergic skin reaction
• H412: Harmful to aquatic life with long lasting effects

P-phrases (Safety measures):

Precautionary measures:

• P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
• P240: Ground all containers and receptacles
• P241: Use explosion-proof electrical/ventilating/lighting/equipment
• P242: Use only non-sparking tools
• P243: Take precautionary measures against static discharge
• P260: Wear protective gloves/protective clothing/eye protection/face protection
• P261: Avoid breathing dust/fume/gas/mist/vapours/spray
• P271: Use only outdoors or in a well-ventilated area
• P280: Wear protective gloves/protective clothing/eye protection/face protection
• P284: In case of insufficient ventilation, wear suitable respiratory equipment.
• P285: In case of insufficient ventilation, wear suitable respiratory equipment.
• P272: Contaminated work clothing should not be allowed out of the workplace
• P273: Avoid release to the environment

Response:

• P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].
• P304 + P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P312: Call a POISON CENTER or doctor/physician if you feel unwell.
• P321: Specific treatment (see supplemental first aid instructions on this label)
• P362 + P364: Take off contaminated clothing and wash it before reuse
• P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician
• P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.
• P403 + P235: Store in a well-ventilated place. Keep cool.

Storage:

• P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
• P501: Dispose of contents/container in accordance with local and national regulations

⚠️ IMPORTANT WARNINGS

• FOR INDUSTRIAL OR PROFESSIONAL USE ONLY
• APPROPRIATE TRAINING HAS BEEN COMPLETED
• May cause cancer - use only with adequate ventilation
• May cause allergic reactions in sensitive individuals
• Harmful to the environment - prevent discharge

Storage and Processing

• Storage: At temperatures up to 25°C, storage stability in original packaging at least 365 days
• Processing: Use only with further thinners such as white spirit, toluene or xylene
• Drying time: Touch dry after 24 hours, fully cured after 7 days at 23°C and 50% RH

WARNING: This product should only be used by professionals with adequate training. Always consult the full safety data sheet before use. SDS number: 0017014