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Desmodur® E 2863 XP is a specialized aliphatic ester-containing prepolymer based on hexamethylene-1,6-diisocyanate (HDI), primarily used as a hardener for polyurethane coatings. Here's a breakdown based on the provided information:

Product Overview:

• Product Name: Desmodur® E 2863 XP
• Type: Hardener for polyurethane coatings
• Chemical Composition: Aliphatic ester groups containing prepolymer based on HDI

Characteristic Data:

• NCO-content: 10.3 - 11.5% (measured by ISO 11909)
• Viscosity (23 °C): 1,200 - 1,900 mPa·s (measured by ISO 3219/A.3)
• Monomer content: < 0.3% (measured by ISO 10283)
• NCO equivalent weight: Approx. 380 g
• Flash point: Approx. 184 °C (measured by DIN EN ISO 2719)
• Density at 20 °C: Approx. 1.11 g/cm3 (measured by DIN 51 757)

Properties / Applications:

• Usage: Used in combination with suitable polyols and/or aliphatic amines (e.g., from the Desmophen® NH-family) to formulate light-stable two-component polyurethane and polyurea coatings with flexible properties.
• Storage: Store in original sealed Covestro containers at recommended temperatures (20 - 30 °C), protected from moisture, heat, and foreign materials.
• Handling: Sensitive to moisture; storage in tightly sealed containers is crucial. Elevated temperatures may increase viscosity and reduce NCO content. Storage at low temperatures (< 20°C) may cause turbidity and crystalline separation, which is reversible by gentle heating up to 50°C.

Safety and Handling:

• Safety: Requires appropriate protective measures as detailed in the safety data sheet due to its reactive nature with polyisocyanates and residual monomeric HDI.
• Application: Primarily used in industrial or trade applications; not suitable for DIY (homeworker) applications.
• Trial Product: It's noted as a trial product, indicating limited extensive experience with its processing and use.

Additional Information:

• Labeling and Statutory Requirements: The product data sheet is valid in conjunction with the latest safety data sheet, which contains updated safety-relevant information and statutory requirements.
• Liability and Warranty: Covestro provides no warranty or guarantee of product behavior during processing or use beyond the initial six-month storage period under recommended conditions.

Desmophen® NH 1420 is a specific chemical product produced by Covestro, designed for use as an aminofunctional co-reactant in polyurethane formulations. Here’s a breakdown of its key characteristics and applications based on the provided datasheet:

Product Overview:

• Chemical Name: Desmophen® NH 1420
• Manufacturer: Covestro Deutschland AG

Characterization:

• Function: Aminofunctional co-reactant for polyisocyanates
• Form: Low-viscosity liquid

Specifications:

• Amine Value: 199 - 203 mg KOH/g
• Viscosity (25°C): 900 - 2,000 mPa·s
• Viscosity (23°C): Approximately 1,400 mPa·s
• Color (Hazen): ≤ 250
• Equivalent Weight: Approximately 276
• Density at 20°C: Approximately 1.076 g/ml
• Flash Point: Approximately 100°C
• Water Content: ≤ 0.15%

Compatibility and Applications:

• Compatibility: Generally compatible with many polyisocyanates and prepolymers, though compatibility testing is recommended.
• Applications: Used primarily in the formulation of high-solids, two-component polyurethane topcoats and coating materials.

Storage and Handling:

• Storage Conditions: Store in original sealed Covestro containers at temperatures between 0°C to 30°C. Protect from moisture, heat, and foreign material.
• Storage Time: Product should maintain specifications for at least six months under proper storage conditions as per Covestro’s guidelines.

Safety and Regulatory Information:

• Safety Data Sheet: Users should refer to the latest version for detailed safety information and handling instructions.
• Regulatory Considerations: Not intended for use in medical devices or applications subject to specific regulations without prior agreement from Covestro.

Disclaimer:

• The product datasheet emphasizes that while Covestro provides information and technical assistance, users are responsible for evaluating the suitability and safety of the product for their specific applications. Covestro does not provide warranties or guarantees regarding product performance beyond specified storage and handling conditions.

This information is crucial for manufacturers and users of polyurethane coatings and related materials to understand the properties, handling requirements, and application guidelines for Desmophen® NH 1420.