Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Covestro Bayhydur XP 2451 Waterborne Curing Agent

Covestro Bayhydur XP 2451 is a waterborne aliphatic polyisocyanate curing agent from the Bayhydur XP series, designed for high-performance two-component waterborne coatings. It delivers excellent gloss retention, weather resistance, and fast ambient-cure capability while meeting stringent VOC regulations. Ideal for automotive refinish, industrial wood, and plastic coatings requiring low-emission, durable finishes.
  • covestro bayhydur xp 2451 waterborne curing agent_58e00b9f
  • covestro bayhydur xp 2451 waterborne curing agent_58e00b9f

Features Of Covestro Bayhydur XP 2451 Waterborne Curing Agent

  1. High-performance aliphatic polyisocyanate dispersion for waterborne two-component polyurethane systems.

  2. Excellent compatibility with a broad range of waterborne polyols, including acrylics, polyesters, and polyethers.

  3. Enables low-VOC, high-gloss, and durable coatings meeting stringent environmental regulations (e.g., EU Directive 2004/42/EC).

  4. Offers fast ambient cure kinetics without requiring external catalysts or excessive heat.

  5. Delivers superior chemical resistance, mar resistance, and UV stability in final cured films.

Typical Applications Of Covestro Bayhydur XP 2451 Waterborne Curing Agent

  1. Architectural wall and ceiling coatings requiring low-emission, high-durability finishes.

  2. Industrial maintenance coatings for metal substrates in food processing and pharmaceutical facilities.

  3. Wood coatings for furniture and cabinetry where low odor and rapid handling are critical.

  4. Automotive refinish clearcoats demanding excellent clarity, hardness, and weathering performance.

  5. Plastic coatings for interior automotive parts and consumer electronics housings.

Specifications Of Covestro Bayhydur XP 2451 Waterborne Curing Agent

Chemical TypeAliphatic polyisocyanate (HDI-based) dispersion
Product FormWaterborne liquid dispersion
AppearanceClear to slightly hazy, colorless to pale yellow liquid
NCO Content (wt %)6.8 – 7.2
pH (at 23 °C)7.0 – 8.0
Viscosity (23 °C, mPa·s)150 – 300 (Brookfield DV2T, spindle #3, 12 rpm)
Solids Content (wt %)32 – 34
Storage Stability≥ 6 months at 5–30 °C in sealed original container


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