Desmodur® E XP 2762 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). Here's a breakdown of its properties and applications:
Characterization: Designed as a binder for fast moisture-curing, one-component coatings and adhesives.
Form Supplied: It's a solvent-free, yellowish, liquid of medium viscosity.
Specification:
- Viscosity (at 23°C): Approximately 2,800 mPa·s
- NCO content: Approximately 15.9%
Solubility/Thinnability: Generally compatible with various solvents such as ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, xylene, Shellsol® A, and Solvesso® 100. However, solutions formed should be tested for stability.
Compatibility: Compatible with Desmophen®/Baycoll® polyols, other Desmodur® products, and flexibilizers.
Properties/Applications: Suitable for moisture-curing one-component systems, it can be used as primers and sealers for porous substrates to provide protection against moisture, oil, fuel, and other chemicals. Additionally, it can be used as a binder in synthetic resin mortars and in combination with suitable polyols to yield tough but flexible, wear-resistant coatings and sealers. It's also suitable for use in the formulation of solvent-free, moisture-curing one-component adhesives or in combination with Baycoll® to formulate two-component adhesives for bonding various materials like wood, metal, and plastic.
Storage: It should be stored in its original sealed Covestro container at room temperature (approximately 23°C), protected from moisture, heat, and foreign material.