Archives: Listings

Desmodur® E XP 2727 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). Here's a summary of its properties and applications:

• Characterization: It's designed for use in one and two-component polyurethane and polyurea coatings, adhesives, and sealants.
• Form Supplied: This product is a solvent-free liquid of medium viscosity.
• Specification:
  • NCO content: Approximately 15.25%
  • Viscosity (at 23°C): Approximately 800 mPa·s
• Solubility/Thinnability: Desmodur® E XP 2727 can be formulated into solutions using polyurethane grade solvents (< 0.05% water), although it's recommended to test the solutions for stability.
• Compatibility: It's generally compatible with Desmophen®/Baycoll® polyols, other Desmodur® products, and flexibilizers.
• Properties/Applications: Suitable for moisture-curing polyurethane coatings, adhesives, and sealants, Desmodur® E XP 2727 can also serve as a hardener for two-component polyurethane and polyurea coatings, either alone or in combination with other polyisocyanates.
• Storage: It should be stored in its original sealed Covestro container at temperatures between 10°C and 30°C, protected from moisture, heat, and foreign material.

Like other products in the Desmodur® line, Desmodur® E XP 2727 is labeled as a Trial Product, indicating limited experience with its behavior during processing or use. Testing is recommended to determine its suitability for specific applications. Additionally, its use in medical devices or contact with food or cosmetics requires prior approval from Covestro.

Desmodur® E XP 2723 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). Here's a breakdown of its properties and applications:

Characterization: It serves as a binder for the formulation of moisture-curing, one-component coatings and adhesives. Additionally, it can act as a hardener for hydroxyl-bearing co-reactants.

Form Supplied: Desmodur® E XP 2723 is supplied as a solvent-free liquid.

Specification:

• • NCO content: Approximately 15.4%
  • Viscosity (at 25°C): Approximately 1,500 mPa·s

Solubility/Thinnability: It exhibits good compatibility with solvents such as ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, xylene, and Solvesso® 100. However, solutions formed should be tested for storage stability, and only PU grade solvents should be used.

Properties/Applications: Desmodur® E XP 2723 finds application in the formulation of moisture-curing one-component systems. These systems, when thinned with a suitable solvent, can be used as primers and sealers for porous substrates, providing protection against moisture, oil, fuel, and other chemicals. It's also suitable for use as a binder in synthetic resin mortars and in combination with suitable polyols to yield tough, flexible, wear-resistant coatings and sealers. Moreover, it can be used in the formulation of solvent-free moisture-curing one-component adhesives or in combination with Baycoll® to formulate two-component adhesives for bonding wood, metal, plastic, and other materials.

Storage: It should be stored in its original sealed Covestro container at room temperature (approximately 23°C), protected from moisture, heat, and foreign material.

This product is labeled as a Trial Product, indicating limited experience with its behavior during processing or use. Testing is recommended to determine its suitability for specific applications. Additionally, it's important to note that Covestro does not make any representations regarding the product after six months from the day of shipment.

Desmodur® E XP 2605/1 is a polyisocyanate prepolymer based on toluene diisocyanate (TDI) and diphenylmethan diisocyanate (MDI). Here's a summary of its characteristics and applications:

• Characterization: It's designed for use in the formulation of moisture-curing one-component polyurethane coatings.
• Form Supplied: It's supplied as a 50% solution in butyl acetate.
• Specification:
  • NCO content: 4.3 ± 0.5%
  • Viscosity (at 23°C): ≤ 350 mPa·s
  • Non-volatile content (0.2 g/60 min./125°C): 51.0 ± 2.0%
  • Color (Iodine): ≤ 2
  • TDI monomer content: < 0.5%
  • MDI monomer content: < 1.0%
• Solubility/Thinnability: It's compatible with solvents such as ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, toluene, and xylene. However, it's not compatible with alcohols due to their reactivity with the prepolymer. Only PU grade solvents should be used, and solvents must not contain reactive groups.
• Properties/Applications: Desmodur® E XP 2605/1 is suitable for the formulation of fast-drying wood coatings for furniture.
• Storage: It should be stored in its original sealed Covestro container at temperatures between 10°C and 30°C, protected from moisture, heat, and foreign material.

This product is mainly used as a hardener in coating materials or adhesives. Due to the potential hazards associated with reactive polyisocyanates, it's recommended for use only in industrial or trade applications and not suitable for DIY use. Additionally, as noted, Desmodur® E XP 2605/1 is labeled as a Trial Product, indicating limited experience with its behavior during processing or use. Testing is recommended to determine its suitability for specific applications.

Desmodur® E 3370 is an aliphatic polyisocyanate prepolymer based on hexamethylene diisocyanate (HDI). Here's an overview of its characteristics and applications:

• Characterization: It's primarily used in the formulation of moisture-curing one-component polyurethane coatings known for their good weather stability.
• Form Supplied: It's supplied as a solution in 1-methoxypropylacetate-2/solvent naphtha 100 (6:24).
• Specification:
  • Isocyanate content: 10.0 ± 0.5%
  • Non-volatile content: 70.0 ± 1.0%
  • Color value (Hazen): ≤ 80
  • Viscosity (at 23°C): 1,400 ± 300 mPa·s
  • Monomeric HDI in supply form: < 0.5%
• Other Data:
  • Equivalent weight: Approximately 420
  • Flash point: Approximately 50°C
  • Density at 20°C: Approximately 1.05 g/ml
• Solubility/Thinnability: Desmodur® E 3370 can be thinned with esters like ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, and with aromatic hydrocarbons such as toluene, xylene, Solvesso® 100, and Shellsol® A. However, it's not compatible with white spirit, and alcohols should not be used due to their reactivity with the prepolymer.
• Properties/Applications: Suitable for the formulation of weather-stable and colorfast coatings with very good resistance to solvents, abrasion, and chemicals for use in exterior applications.
• Storage: It should be stored in its original sealed Covestro container at temperatures between 10°C and 30°C, protected from moisture, heat, and foreign material.

Desmodur® E 3370 is mainly used as a hardener in coating materials or adhesives. Due to the handling requirements and potential hazards associated with reactive polyisocyanates, it's typically used in industrial or trade applications and not recommended for DIY use.

Desmodur® E 3265 MPA/SN is an aliphatic polyisocyanate prepolymer based on hexamethylene diisocyanate (HDI). Here's a summary of its characteristics and applications:

• Characterization: It's an aliphatic polyisocyanate prepolymer used in the formulation of moisture-curing, one-component polyurethane coatings known for their good weather stability.
• Form Supplied: It's supplied as a solution in 1-methoxypropylacetate-2/solvent naphtha 100 (approximately 6:29).
• Specification:
  • NCO (isocyanate) content: 10.4 ± 0.4%
  • Non-volatile content: 65.0 ± 2.0%
  • Viscosity (at 23°C): 1,200 ± 400 mPa·s
  • Color value (Iodine): ≤ 4
  • Monomer content: ≤ 0.26%
• Other Data:
  • Equivalent weight: Approximately 404
  • Flash point: Approximately 50°C
  • Density at 20°C: Approximately 1.05 g/ml
• Solubility/Thinnability: Compatible with esters like ethyl acetate, butyl acetate, and 1-methoxypropylacetate-2, as well as with aromatic hydrocarbons such as toluene, xylene, Solvesso® 100, and Shellsol® A. However, it's not compatible with white spirit, and alcohols should not be used due to their reactivity with the prepolymer.
• Properties/Applications: Desmodur® E 3265 MPA/SN is suitable for formulating weather-stable and colorfast outdoor coatings with excellent resistance to solvents, abrasion, and chemicals.
• Storage: It should be stored in its original sealed Covestro container at temperatures between 10°C and 30°C, protected from moisture, heat, and foreign material.

Desmodur® E 3265 MPA/SN serves mainly as a hardener in coating materials or adhesives. Due to the handling requirements and potential hazards associated with reactive polyisocyanates, it's typically used in industrial or trade applications and not recommended for DIY use.

Desmodur® E 23 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). It serves multiple purposes in coating and adhesive formulations:

Characterization:

• Aromatic polyisocyanate prepolymer based on MDI.
• Acts as a binder for the formulation of moisture-curing, one-component coatings and adhesives.
• Functions as a hardener for hydroxyl-bearing co-reactants.

Form Supplied:

• Solvent-free liquid.

Specification:

• NCO Content: 15.4 ± 0.4%
• Viscosity at 23°C: 1,800 ± 250 mPa·s

Other Data:

• Equivalent Weight: 266 - 280
• Flash Point: > 193°C
• Density at 20°C: Approximately 1.13 g/cm³

Solubility/Thinnability:

• Compatible with ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, xylene, Shellsol® A, and Solvesso® 100.
• Solutions formed should be tested for storage stability.

Compatibility:

• Compatible with Desmophen®/Baycoll® polyols, other Desmodur® products, and flexibilizers.

Properties/Applications:

• Used in moisture-curing one-component systems for primers and sealers on porous substrates to protect against moisture, oil, fuel, and chemicals.
• Acts as a binder in synthetic resin mortars.
• Formulates high-grade anti-corrosion systems for steel in civil and hydraulic engineering applications.
• Yields tough, flexible, wear-resistant coatings and sealers in combination with suitable Desmophen® polyols.
• Suitable for solvent-free, moisture-curing one-component adhesives or in combination with Baycoll® for two-component adhesives, bonding materials such as wood, metal, and plastic.

Storage:

• Should be stored in its original sealed Covestro container.
• Recommended storage temperature: room temperature (approximately 23°C).
• Protect from moisture, heat, and foreign material.

Desmodur® E 23 offers versatility in various applications, providing bonding, sealing, and coating properties suitable for different substrates and environments.

Desmodur® E 2200/76 is a prepolymer based on diphenylmethane-diisocyanate (MDI) with isomers. It is supplied as a solvent-free, colorless to yellowish liquid that is viscous at room temperature. Here are the key specifications and characteristics of Desmodur® E 2200/76:

Characterization:

• Type: Prepolymer based on diphenylmethane-diisocyanate (MDI) with isomers.
• Form: Solvent-free, colorless to yellowish liquid, viscous at room temperature.

Specification:

• NCO Content: 9.85 ± 0.25%
• Viscosity at 25°C: 2,750 ± 750 mPa·s

Other Data:

• Density at 20°C: Approximately 1.09 g/cm³
• Flash Point: ≥ 200°C

Properties/Applications:

• Flexibilization: Suitable for flexibilization of Desmodur® E 21/E 23 or similar products, and as a binder for granular rubber.
• Coatings and Sealants: Can be used in combination with suitable polyols for the formulation of flexible coatings and sealing compounds.
• Adhesives: Suitable as a raw material for the formulation of solvent-free, moisture-curing one-component adhesives, or in combination with Baycoll® for two-component adhesives. These adhesives can bond a wide variety of materials such as wood, metal, and plastic.

Storage:

• Should be stored in its original sealed Covestro container.
• Recommended storage temperature: 10 - 30°C.
• Protect from moisture, heat, and foreign material.

Desmodur® E 2200/76 offers versatility in various applications, including coatings, sealants, and adhesives, providing flexibility and bonding properties suitable for different materials.

Desmodur® E 22 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate. It is primarily used in the formulation of highly flexible one- and two-component polyurethane coatings and adhesives. Additionally, it can serve as a binder for flexible aggregates, such as rubber granules. Here are the key specifications and characteristics of Desmodur® E 22:

Characterization:

• Type: Aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate.
• Application: Formulation of highly flexible one- and two-component polyurethane coatings and adhesives, as well as a binder for flexible aggregates.

Specification:

• NCO Content: 8.6 ± 0.3%
• Viscosity at 23°C: 2,800 ± 400 mPa·s

Other Data:

• Equivalent Weight: 472 - 506
• Flash Point: > 200°C
• Density at 20°C: Approximately 1.08 g/cm³

Solubility/Thinnability:

• Desmodur® E 22 can be dissolved using PU grade solvents (< 0.05% water), but solutions formed must be tested for compatibility.

Properties/Applications:

• Flexibilization: Suitable for flexibilizing products like Desmodur® E 21/E 23 or similar ones.
• Binder: Can be used as a binder for rubber granules.
• Adhesives: Suitable for formulating solvent-free, moisture-curing one-component adhesives. It can also be used in combination with Baycoll to formulate two-component adhesives for bonding various materials such as wood, metal, and plastic.

Storage:

• Should be stored in its original sealed Covestro container at temperatures between 10 - 30°C, protected from moisture, heat, and foreign material.

Desmodur® E 22 offers versatility in various applications, providing flexibility and bonding properties suitable for a range of materials.

Desmodur® E 2190 X is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). It serves as a raw material in the formulation of solvent-borne one-component polyurethane coatings, which cure by reacting with atmospheric moisture.

Here are the key specifications and characteristics of Desmodur® E 2190 X:

Characterization:

• Type: Aromatic polyisocyanate prepolymer based on MDI.
• Form: Approximately 90% in xylene.

Specification:

• NCO Content: 14.3 ± 0.5%
• Viscosity at 25°C: 1,100 ± 400 mPa·s

Other Data:

• Flash Point: Approximately 25°C
• Density at 20°C: Approximately 1.11 g/ml

Solubility/Thinnability:

• Desmodur® E 2190 X exhibits good compatibility with esters such as ethyl acetate, butyl acetate, and 1-methoxypropylacetate-2, as well as with aromatic hydrocarbons such as toluene, solvent naphtha, Solvesso® 100, and Shellsol® A.
• It is not compatible with white spirit, and alcohols should not be used due to potential reactivity.
• Only PU grade solvents (< 0.05% water) should be used.

Properties/Applications:

• Ideal for formulating moisture-curing, one-component primers and sealers to protect porous substrates against moisture, oil, fuels, and other chemicals.
• Can be used as a binder for high-performance anti-corrosion coatings for steel in hydraulic and civil engineering applications.

Storage:

• Should be stored in its original sealed Covestro container.
• Recommended storage temperature: room temperature (approximately 23°C).
• Protect from moisture, heat, and foreign material.

Desmodur® E 2190 X offers excellent properties for applications requiring effective moisture-curing coatings and sealers, as well as for anti-corrosion coatings in various engineering applications.

Desmodur® E 21 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). It is primarily used for two purposes:

(A) As a binder for the formulation of moisture-curing, one-component coatings and adhesives. (B) As a hardener for hydroxyl-bearing co-reactants.

Here are the key specifications and characteristics of Desmodur® E 21:

Characterization:

• Type: Aromatic polyisocyanate prepolymer based on MDI.
• Form: Solvent-free liquid of medium viscosity.

Specification:

• NCO Content: 16.0 ± 0.7%
• Viscosity: 5,400 ± 1,300 mPa·s at 25°C
• Equivalent Weight: 251 - 274
• Flash Point: > 250°C
• Density: Approximately 1.15 g/ml at 20°C

Solubility/Thinnability:

• Compatible with solvents such as ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, xylene, Shellsol® A, and Solvesso® 100.
• Solutions formed must be tested for their storage stability. Only PU grade solvents should be used, and the solvent should not contain reactive groups.

Compatibility:

• Compatible with Desmophen®/Baycoll® polyols, other Desmodur® products, and flexibilizers.

Properties/Applications:

• Suitable for formulating moisture-curing one-component systems, which can be used as primers and sealers for porous substrates to provide protection against moisture, oil, fuel, and other chemicals.
• Can be used as a binder in the formulation of synthetic resin mortars.
• Yields tough but flexible, wear-resistant coatings and sealers when combined with suitable Desmophen polyols.
• Suitable for formulating solvent-free moisture-curing one-component adhesives or two-component adhesives when combined with Baycoll®.

Storage:

• Should be stored in its original sealed container at room temperature (approximately 23°C).
• Protect from moisture, heat, and foreign materials.

Desmodur® E 21 offers versatility in various coating and adhesive applications, providing durable protection and excellent adhesion properties.