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  • Adhesives

Desmodur® ultra DA-L

Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate. Desmodur® ultra DA-L is a liquid polyisocyanate, emulsifiable in aqueous polymer dispersions.

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About

Product Types

  • PIC
  • Crosslinkers
  • Aliphatic polyisocyanate
  • Hydrophilic polyisocyanate
  • Isocyanate
  • Polyisocyanurate
  • Reactive system
  • Polyisocyanate

Material

Adhesives
Heat activated, Moisture resistant, Ultra-low monomer, Waterborne

General Characterization

Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate.
Desmodur® ultra DA-L is a liquid polyisocyanate, emulsifiable in aqueous polymer dispersions. Any occasional turbidity or precipitation visible is caused by very small amounts of processing aids. These have no adverse effect on the processing and final properties of the cured adhesives. It can be used as a crosslinking agent for largely pH-neutral aqueous polymer dispersions, such as polyurethane, polyvinylacetate, polyacrylate and synthetic rubber dispersions. Crosslinking raises the resistance of the bonds to heat, water, plasticizers and numerous solvents.

Storage Conditions

- Storage in original sealed Covestro container.

- Recommended storage temperature: 0 - 30 °C.

- Protect from moisture, heat and foreign material.

General information: Hydrophilic isocyanates are very moisture-sensitive and react with water to form carbon dioxide and insoluble ureas. The containers must always be kept tightly closed. The access of water in all forms (moist air, solvents, moist containers) must be prevented, because the generation of carbon dioxide can lead to dangerous increases in pressure. Storage at higher temperatures will result in increase of color and viscosity.

Sampling

No data available

Packaging Type

60 l metal canister, contents 60 kg.

Technical Properties & Datasheets

Property Name Test Method Unit Value
NCO content M105-ISO 11909 % 20.0 ± 1
Viscosity at 23 °C M014-ISO 3219/A.3 mPa*s 3,000 ± 600
Monomeric HDI M106-ISO 10283 % < 0.10

Property Name Test Method Unit Value
Flash point DIN EN 22719 °C 215
Density at 20 °C DIN 51757 g/ml approx. 1.16

Downloads

Technical Data Sheet
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Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com
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