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DESMODUR® E 20100

Desmodur® E 20100 is a modified polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). It is primarily used as a binder for the formulation of injection resins designed to seal water-conveying cracks in structures both above and below ground.
Here are the key specifications and characteristics of Desmodur® E 20100:
Characterization:
- Type: Modified polyisocyanate prepolymer based on MDI.
- Form: Solvent-free liquid.
Specification:
- NCO Content: 15.7 ± 0.5%
- Viscosity at 23°C: 1,100 ± 400 mPa·s
Other Data:
- Flash Point: > 200°C
- Density at 20°C: Approximately 1.12 g/cm3
Properties/Applications:
- Desmodur® E 20100 is specifically formulated for use as a binder in injection resins for sealing water-conveying cracks in underground structures.
- It helps displace water from cracks and voids effectively.
Storage:
- Should be stored in original sealed Covestro containers.
- Recommended storage temperature: 10 - 30°C.
- Protect from moisture, heat, and foreign material.
Desmodur® E 20100 offers excellent properties for applications requiring effective sealing of water-conveying cracks in structures. Its formulation provides durability and reliability in various construction scenarios.

DESMODUR® E 1750 PR

Desmodur® E 1750 PR is a polyisocyanate prepolymer primarily used as a hardener in coating materials or adhesives. Here's a breakdown of its key characteristics and specifications:
Characterization:
- Type: It is a polyisocyanate prepolymer based on toluene diisocyanate (TDI).
- Form: Supplied as a 50% solution in methoxypropylacetate/xylene.
Specification:
- NCO Content: The NCO (isocyanate) content in the supply form ranges from 5.0% to 5.7%.
- Viscosity: At 23°C, the viscosity falls between 300 and 450 mPa·s.
- Solids Content: The solids content is specified to be between 49% and 51%.
- Iodine Color Value: The maximum iodine color value in the supply form is 2.
- Monomeric TDI: The maximum monomeric TDI content in the supply form is 0.5%.
Solubility/Thinnability:
- Desmodur® E 1750 PR can be thinned with esters and aromatic hydrocarbons such as ethyl acetate, butyl acetate, 1-methoxypropylacetate-2, toluene, and xylene. It is not compatible with white spirit or alcohols due to potential reactivity.
- Solutions formed must be tested for their storage stability, and only PU grade solvents (< 0.05% water) should be used.
Properties/Applications:
- Usage: Suitable for formulating wood coatings (e.g., for parquet, panelling, boats, and furniture) and impregnating agents for mineral construction materials.
- Protection: Clear coatings based on Desmodur® E 1750 PR provide surfaces with durable protection against moisture, oil fuel, aggressive chemicals, and mechanical impact.
Storage:
- Should be stored in its original sealed container at room temperature (approximately 23°C).
- Protect from moisture, heat, and foreign materials. High temperatures can cause an increase in viscosity.
- Shelf life is guaranteed for six months from the date of shipment, provided proper storage conditions are maintained.

BAYBOND® VP LS 2277

Baybond® VP LS 2277 is an anionic/non-ionic polyester urethane polymer used as the film-forming component in glass fiber sizes. Here are its key characteristics and specifications:
Characterization:
- Type: Anionic/non-ionic polyester urethane polymer
- Form: Milky white dispersion in water
Characteristic Data:
- Non-volatile content: 40.5 ± 1.5%
- Flow time at 23ºC: 10 - 20 s
- pH value at 23ºC: 6.5 - 8.5
- Particle size:
  - Dv 0.5: ≤ 0.5000 µm
  - Dv 0.9: ≤ 20.0 µm
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Developed for sizing glass fibers used to reinforce thermoplastics, particularly polyamide.
- Exhibits outstanding film-forming properties and very good adhesion.
- High colorfastness, even at elevated temperatures.
- Highly resistant to shear forces and hydrolysis.
Storage:
- Should be stored in tightly sealed original containers.
- Protect from freezing, heat, and foreign material. Cannot be used if frozen.
- Recommended storage temperature: 5º-30ºC.
- Shelf life of twelve months from the date of shipment, provided it's stored appropriately.

Baybond® PU 407

Baybond® PU 407 is an anionic/non-ionic polyester urethane polymer used as the film-forming component in glass fiber sizes. Here are its key characteristics and specifications:
Characterization:
- Type: Anionic/non-ionic polyester urethane polymer
- Form: Milky white dispersion in water
Specification:
- Non-volatile content: 39 - 41%
- Flow time at 23ºC: 11 - 18 s
- pH value at 20ºC: 6.3 - 7.7
Other Data:
- Density at 20ºC: Approx. 1.0 g/ml
- Average particle size: 250 - 500 nm
- 100% Modulus: 2.7 N/mm²
- Tensile strength: 40 N/mm²
- Elongation at break: 1,200%
- Tg (Glass transition temperature): -46°C
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Particularly suited for sizing glass fibers used to reinforce thermoplastics, especially polyamide.
- Exhibits outstanding film-forming properties and very good adhesion.
- Maintains high colorfastness, even at elevated temperatures.
- Stable against shear forces.
Storage:
- Should be stored in tightly sealed original containers.
- Protect from freezing, heat, and foreign materials. Cannot be used if frozen.
- Recommended storage temperature: 5º-30ºC.
- Shelf life of six months from the date of receipt at the customer, provided it's stored appropriately.

Baybond® PU 406

Baybond® PU 406 is a non-ionic polyurethane polymer primarily used as the film-forming component in glass fiber sizes. Here's a summary of its characteristics and specifications:
Characterization:
- Type: Non-ionic polyurethane polymer
- Form: Milky white dispersion in water
Specification:
- Non-volatile content: 34.5 ± 1.5%
- Flow time at 23°C: 10 - 22 s
- pH value at 20°C: 5.5 - 7.5
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Developed for sizing glass fibers used to reinforce thermoplastics.
- Exhibits good film-forming properties and adhesion.
- Remains stable when exposed to shear forces.
Storage:
- Store in original sealed Covestro container.
- Recommended storage temperature: 5 - 30°C.
- Protect from frost, heat, and foreign material. Cannot be used if frozen.
- Covestro guarantees product specifications for six months from the shipment date if stored appropriately.

Baybond® PU 405

Baybond® PU 405 is an anionic/non-ionic crosslinking polyether urethane polymer primarily used as the film-forming component in glass fiber sizes. Here are the key details from the datasheet:
Characterization:
- Type: Anionic/non-ionic crosslinking polyether urethane polymer
- Form: Milky white dispersion in water
Specification:
- Non-volatile content: 32 - 35%
- Flow time at 23°C: 11 - 18 s
- pH value at 20°C: 6.0 - 8.0
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Developed for sizing glass fibers used to reinforce thermoplastics, particularly polyamide.
- Exhibits outstanding film-forming properties and very good adhesion.
- Shows very good colorfastness, even at high temperatures.
- Mechanical film properties can be fully developed by post-crosslinking at temperatures from 170°C for 20 minutes.
- Highly resistant to shear forces and hydrolysis.
Storage:
- Store in original sealed Covestro container.
- Recommended storage temperature: 5 - 30°C.
- Protect from frost, heat, and foreign material. Cannot be used if frozen.
- Covestro guarantees product specifications for six months from the shipment date if stored appropriately.

Baybond® PU 403

Baybond® PU 403 is an anionic/non-ionic crosslinking polyester urethane polymer primarily used as the film-forming component in glass fiber sizes. Here are the key details from the datasheet:
Characterization:
- Type: Anionic/non-ionic crosslinking polyester urethane polymer
- Form: Milky white dispersion in water
Specification:
- Non-volatile content: 39 ± 1%
- Flow time at 23°C: 11 - 18 s
- pH value at 20°C: 6.0 - 8.0
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Developed for sizing glass fibers used to reinforce thermoplastics, particularly polyamide.
- Exhibits outstanding film-forming properties and very good adhesion.
- High colorfastness, even at elevated temperatures.
- Mechanical film properties can be enhanced by post-crosslinking at temperatures from 170°C for 30 minutes.
- Stable against shear forces.
Storage:
- Store in original sealed Covestro container.
- Recommended storage temperature: 5 - 30°C.
- Protect from frost, heat, and foreign material. Cannot be used if frozen.
- Covestro guarantees product specifications for twelve months from the shipment date if stored appropriately.

Baybond® PU 401 A

Baybond® PU 401 A is an anionic/non-ionic polyester urethane polymer primarily used as the film-forming component in glass fiber sizes. Here are the key details from the datasheet:
Characterization:
- Type: Anionic/non-ionic polyester urethane polymer
- Form: Milky white dispersion in water
Specification:
- Non-volatile content: 48.0 - 52.0%
- Flow time at 23°C: ≤ 70 s
- pH value at 23°C: 6.5 - 8.5
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Developed for sizing glass fibers used to reinforce thermoplastics, particularly polyamide.
- Exhibits good film-forming properties and adhesion.
- High colorfastness, even at elevated temperatures.
- Stable against shear forces.
Storage:
- Store in original sealed Covestro container.
- Recommended storage temperature: 5 - 30°C.
- Protect from frost, heat, and foreign material. Cannot be used if frozen.
- Covestro guarantees product specifications for twelve months from the shipment date if stored appropriately.
Labeling and REACH Applications:
- Valid only when used with the latest edition of the corresponding Safety Data Sheet.
- Safety-relevant information updates will be reflected in the Safety Data Sheet.

Baybond® PU 330

Baybond® PU 330 is an anionic/non-ionic polyester urethane polymer primarily used as the film-forming component in glass fiber sizes. Here are the key details from the datasheet:
Characterization:
- Type: Anionic/non-ionic polyester urethane polymer
- Form: Slightly cloudy polymer dispersion in water
Specification:
- Non-volatile content: 29.0 - 31.0 %
- Flow time at 23°C: 30 - 140 s
- pH value at 20°C: 6.5 - 8.0
Solubility/Thinnability:
- Can be thinned in any ratio with deionized water.
Compatibility:
- Compatible with additives typically used in glass sizes formulations, such as adhesion promoters, lubricants, antistatic agents, and plasticizers.
Properties/Applications:
- Particularly suitable for sizing glass fibers used in thermoset manufacturing.
- Exhibits good film-forming properties and adhesion.
- Stable when exposed to shear forces.
Storage:
- Store in original sealed Covestro container.
- Recommended storage temperature: 5 - 30°C.
- Protect from frost, heat, and foreign material. Cannot be used if frozen.
- Covestro guarantees product specifications for twelve months from the shipment date if stored appropriately.

BYK®-A 555

BYK-A 555 is a silicone-free polymer-based air release additive specifically designed for unsaturated polyester resins. Here are the key details:
Product Data:
- Composition: Solution of foam-destroying polymers, silicone-free.
- Typical Properties:
  - Density at 20°C: 0.88 g/ml
  - Refractive index at 20°C: 1.507
  - Flash point: 43 °C
  - Hazen color number: < 250
  - Turbidity: < 10 TE/F
Applications:
- Ambient Curing Systems: Suitable for all types of unsaturated polyester resins and processing methods. Particularly effective for pultrusion applications with acrylic, unsaturated polyester, and vinyl ester resins.
Special Features and Benefits:
- Displays high efficiency in deaerating virtually all unsaturated polyester resins in all processing methods.
- May cause haze in the finished part in some resins.
Recommended Use:
- Ambient Curing Systems: Recommended for systems based on acrylates, unsaturated polyesters, or vinyl ester resins.
Recommended Levels:
- Typically used at levels ranging from 0.1-0.5% based on the total formulation, with optimal levels determined through laboratory tests.
- For pultrusion applications, recommended at 0.2 phr additive (as supplied) in combination with 0.3 phr of BYK-A 515 or BYK-A 560.
Incorporation and Processing Instructions:
- Stir into the resin before adding other components.
BYK-A 555 is aimed at improving the quality and performance of unsaturated polyester resin systems by effectively preventing air entrapment during processing, particularly in pultrusion applications.