Aldirez BH is our aldimine latent curing agent for joint sealants, elastic bonding adhesives and general sealing and bonding compounds. Aldirez A is a bis-aldimine, specially designed to accelerate cure in PU systems without producing CO2 gassing, facilitating bubble-free performance, in both aromatic and aliphatic prepolymers.

Aldimines are particularly useful in high-build polyurethane systems as it hydrolyses on exposure to moisture to give you a reactive amine crosslinker and benzaldehyde. That means faster through-cure and no carbon dioxide. Latent curing agents also speed up the cure of low NCO containing prepolymers.

Aldirez BH has been designed for one component PU systems and is suitable for use with both aromatic and aliphatic prepolymers. It has excellent in-can stability with aromatic prepolymers, making it a better choice for 1K aromatic systems than standard latent curing agents. Aldirez A provides the ability to create primers that remain remarkably resilient and bubble-free. In addition to its exceptional ability to inhibit CO2 generation, formulators are able to accelerate the cure of PU primers, to improve turnaround efficiency, whilst retaining a workable pot life.

The Aldimine range

Discover how our Aldimine range can help you

Aldirez BH

Features & Benefits
  • Aldimine latent curing agent that hydrolyses on exposure to moisture, yielding a reactive amine crosslinker and benzaldehyde.
  • Enables bubble free curing at elevated temperature & humidity levels.
  • Suitable for use with both aromatic and aliphatic prepolymers.
  • Very low viscosity.
  • Very good storage stability with aromatic isocyanates.
  • Low temperature crystallisation stability (down to -20°C).
  • Excellent shelf-life.
Typical Applications
  • Flexible Joint Sealants
  • Elastic Bonding Adhesives
  • General Sealing & Bonding Compounds
Typical Properties
Functionality

2

Equivalent Weight

237

Typical Viscosity @ 20ºC (cP)

300

Density (g/cm³)

1.02

Colour (APHA)

Colourless to slightly yellow

Flash Point (°C)

147

Datasheets

Aldirez BH TDS

Aldirez BH SDS

Aldirez A

Features & Benefits
  • Acts as an accelerator to replace/reduce metal catalysts
  • Enables bubble-free curing at elevated temperature and humidity levels
  • Suitable for use in aromatic and aliphatic prepolymers
  • Extremely low viscosity
  • Exceptional low temperature cure
Typical Applications
  • 2K PU primers for concrete and metal
  • Other protective coatings
  • Floor surfaces
Typical Properties
Functionality

2

Equivalent Weight

125

Typical Viscosity @ 20ºC (cP)

32.5

Density (g/cm³)

0.87

Colour (APHA)

Colourless to slightly yellow

Flash Point (°C)

81

Datasheets

Aldirez A TDS

Aldirez A SDS

Further Reading

If you need more information our brochure and technical articles are available to download.

Brochure

Aldirez BH Product Brochure

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