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

Covestro Bayhydrol XP 2451 1 Waterborne Curing Agent

Covestro Bayhydrol XP 2451-1 is a waterborne aliphatic polyisocyanate curing agent from the Bayhydrol XP series, designed for high-performance two-component waterborne coatings. It delivers excellent gloss retention, weather resistance, and low VOC content, enabling durable automotive refinish and industrial applications with fast cure and superior film formation.
  • covestro bayhydrol xp 2451 1 waterborne curing agent_304a63d8
  • covestro bayhydrol xp 2451 1 waterborne curing agent_304a63d8

Features Of Covestro Bayhydrol XP 2451 1 Waterborne Curing Agent

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

  2. Excellent hydrolytic stability and storage stability in aqueous media up to 12 months at ambient temperature.

  3. Enables fast ambient-cure film formation with outstanding hardness development and gloss retention.

  4. Provides superior chemical resistance, including against solvents, cleaners, and mild acids.

  5. Low free monomer content (<0.1% HDI trimer), meeting stringent global regulatory and occupational safety requirements.

Typical Applications Of Covestro Bayhydrol XP 2451 1 Waterborne Curing Agent

  1. Architectural and industrial maintenance coatings for metal and concrete substrates.

  2. Waterborne wood finishes requiring high durability and clarity in furniture and flooring applications.

  3. Automotive refinish clearcoats and basecoat/clearcoat systems compliant with regional VOC limits.

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

  5. High-end protective coatings for rail, marine, and agricultural equipment.

Specifications Of Covestro Bayhydrol XP 2451 1 Waterborne Curing Agent

Chemical TypeAliphatic polyisocyanate (HDI trimer-based) dispersion
Product FormOpaque white to slightly yellow liquid
AppearanceHomogeneous aqueous dispersion
Solids Content (wt%)55–57%
pH7.5–8.5
Viscosity (mPa·s, 23°C, Brookfield RVT, spindle #3, 2 rpm)1,200–2,500
Density (g/cm³, 20°C)1.12–1.16
Free Monomer (HDI trimer)<0.1 wt%


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