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BYK®-A 550

BYK-A 550 is a silicone-free air-release additive designed for solvent-free and solvent-borne unsaturated polyester (UP) systems and adhesives. Here's a breakdown of its properties and applications:
Product Data:
- Composition: Solution of foam-destroying polymers, silicone-free.
- Typical Properties:
  - Density at 20°C: 0.87 g/ml
  - Refractive index at 20°C: 1.501
  - Flash point: 47 °C
  - Hazen color number: < 250
  - Turbidity: < 5 TE/F
Applications:
- Adhesives & Sealants: Suitable for all solvent-borne and solvent-free adhesives and sealants, particularly those based on epoxy resin.
- Ambient Curing Systems: Particularly suitable for transparent unsaturated polyester resins, gelcoats, and casting systems.
Special Features and Benefits:
- Demonstrates excellent air-release qualities with a minor tendency for turbidity in unsaturated polyester resins.
- Especially recommended for transparent systems.
Recommended Use:
- Adhesives & Sealants: Particularly recommended for systems based on epoxy resin.
- Ambient Curing Systems: Especially recommended for transparent unsaturated polyester resins, gelcoats, and casting systems.
Recommended Levels:
- Typically used at levels ranging from 0.1-0.5% based on the total formulation, with optimal levels determined through laboratory tests.
Incorporation and Processing Instructions:
- Should be incorporated into the resin before adding other components.
BYK-A 550 provides effective air-release properties for solvent-free and solvent-borne UP systems and adhesives, with a focus on minimizing turbidity in unsaturated polyester resins, making it particularly suitable for transparent applications.

BYK®-A 535

BYK-A 535 is a silicone-free air release additive designed for solvent-borne and solvent-free epoxy and polyurethane systems. Here's an overview of its properties and applications:
Product Data:
- Composition: Solution of foam-destroying polymers, silicone-free.
- Typical Properties:
  - Density at 20°C: 0.86 g/ml
  - Refractive index at 20°C: 1.48
Applications:
- Ambient-curing Plastic Systems: Used to prevent foam and bubbles during the manufacture and application of ambient-curing plastic applications. Particularly recommended for polyurethane-based floorings and casting systems based on epoxy resins.
- Adhesives & Sealants: Suitable for all solvent-borne and solvent-free adhesives and sealants, especially those based on polyurethane and epoxy resins.
- Coatings Industry: Particularly suitable for solvent-free systems such as polyurethane and epoxy coatings, as well as materials that come into contact with food (including drinking water).
Special Features and Benefits:
- Effective defoamer for various systems without containing silicone.
- Prevents the formation of air bubbles and pinholes.
- May cause cloudiness in transparent systems.
Recommended Use:
- Protective Coating Systems, Industrial Coatings: Especially recommended for solvent-free systems such as polyurethane and epoxy coatings, as well as materials that come into contact with food.
- Adhesives & Sealants: Particularly suitable for systems based on polyurethane and epoxy resins.
Recommended Levels:
- Typically used at levels ranging from 0.1-1% based on the total formulation, with optimal levels determined through laboratory tests.
Incorporation and Processing Instructions:
- For optimal defoaming, the additive should be added to the millbase before the addition of other components. If incorporating at a later stage, sufficiently high shear forces must be applied to ensure good distribution and to prevent cratering.
BYK-A 535 provides effective defoaming properties for a range of applications, including coatings, adhesives, and sealants, particularly those based on polyurethane and epoxy resins, without containing silicone. However, it may cause cloudiness in transparent systems.

BYK®-A 530

BYK-A 530 is a defoamer and air release additive used in various applications such as solvent-borne and solvent-free coatings, plastic systems, adhesives, and sealants. Here's an overview of its properties and applications:
Product Data:
- Composition: Solution of foam-destroying polymers and polysiloxanes.
- Typical Properties:
  - Density at 20°C: 0.81 g/ml
  - Refractive index at 20°C: 1.448
  - Solvents: Hydrocarbon mixture
  - Flash point: 95°C
Applications:
- Coatings Industry: Suitable for protective, industrial, architectural, wood, and furniture coatings.
- Plastic Systems: Used in ambient-curing and pultrusion applications.
- Adhesives and Sealants: Effective in reducing foam formation during manufacture and processing.
Special Features and Benefits:
- Highly effective defoamer and air release additive for various systems.
- Particularly recommended for epoxy resin systems.
- Prevents the formation of foam during manufacture and processing, leading to blister-free surfaces.
Recommended Use:
- Protective Coating Systems: Especially recommended.
- Industrial, Architectural, Wood, and Furniture Coatings: Recommended.
- Plastic Systems, Adhesives, and Sealants: Particularly effective, especially in epoxy resin-based systems.
Recommended Levels:
- Typically used at levels ranging from 0.2-0.8% based on the total formulation, with optimal levels determined through laboratory tests.
- In plastic systems, adhesives, and sealants, recommended levels range from 0.5-2% based on the total formulation.
Incorporation and Processing Instructions:
- For optimal defoaming, the additive should be added to the millbase before the addition of pigments or other components.
- In plastic systems and during pultrusion, stir into the resin before adding other components.
- In adhesives and sealants, stir into the resin before adding other components.
BYK-A 530 offers effective foam control and air release properties, particularly suitable for epoxy resin systems, and can be incorporated into various formulations to achieve desired performance characteristics.

BYK®-9077

BYK-9077 is a solvent-free wetting and dispersing additive primarily used in solvent-borne and solvent-free coatings, adhesives, PVC plastisols, ambient curing resin systems, SMC (Sheet Molding Compound), pultrusion, and solvent-free UV printing inks. Here's a breakdown of its properties and applications:
Product Data:
- Composition: High molecular-weight copolymer with pigment affinic groups.
- Typical Properties:
  - Amine value: 48 mg KOH/g
  - Density at 20 °C: 1.05 g/ml
Applications:
- Coatings, Adhesives, and PVC Plastisols: Suitable for various types of coatings, adhesives, and PVC plastisols.
- Solvent-free UV Printing Inks: Used in solvent-free UV printing ink formulations.
- SMC and Pultrusion: Applied in SMC and pultrusion processes for improved pigment stabilization.
Special Features and Benefits:
- Pigment Deflocculation: Achieves pigment deflocculation through steric stabilization, preventing pigment agglomeration.
- Improved Properties: Enhances gloss, color strength, transparency, and hiding power while reducing viscosity and improving flow characteristics.
- Prevents Coflocculation: Prevents coflocculation, leading to non-floating coloring in pigment blends.
- Versatile Use: Suitable for all types of pigments, particularly basic carbon black pigments.
Recommended Use:
- Particularly recommended for stabilizing basic carbon black pigments.
- Used in various applications including coatings, adhesives, PVC plastisols, and printing inks.
Recommended Levels:
- The recommended levels vary depending on the pigment type, typically ranging from 5-50% based on total formulation or pigment content.
Incorporation and Processing Instructions:
- For optimum performance, the additive should be incorporated into the millbase before the addition of pigments.
- In SMC, pultrusion, and ambient curing resin systems, it should be added to the resin mixture before homogenization and before the addition of solids.
BYK-9077 serves as an effective additive for achieving pigment stabilization, enhancing the performance and properties of various coatings, adhesives, PVC plastisols, and printing inks, especially when working with basic carbon black pigments.

BYK®-9076

BYK-9076 is a solvent-free wetting and dispersing additive designed for use in various coating, adhesive, PVC plastisol, resin system, and thermoplastic applications. Here's an overview of its properties and applications:
Product Data:
- Composition: Alkylammonium salt of a high molecular-weight copolymer.
- Typical Properties:
  - Amine value: 44 mg KOH/g
  - Acid value: 38 mg KOH/g
  - Density at 20 °C: 1.05 g/ml
Applications:
- Coatings, Adhesives, and PVC Plastisols: Suitable for use in solvent-borne and solvent-free systems.
- Ambient Curing Resin Systems: Used for resin systems with low emissions.
- Color Masterbatches for Thermoplastics: Particularly recommended for carbon black pigments.
Special Features and Benefits:
- Pigment Deflocculation: Achieves deflocculation of pigments through steric stabilization, preventing coflocculation and ensuring uniform dispersion.
- Improved Properties: Enhances gloss, color strength, transparency, and hiding power while reducing viscosity and improving flow characteristics.
- Prevents Phase Separation: Prevents phase separation in unsaturated polyesters with different thermoplastics.
- Wetting Agent: Improves wetting of carbon fibers, enhancing process reliability.
Recommended Use:
- Particularly recommended for stabilizing acidic and neutral carbon black pigments.
- Suitable for various pigment types and applications including coatings, adhesives, PVC plastisols, resin systems, and thermoplastic compounds.
Recommended Levels:
- Vary depending on the application and pigment type, typically ranging from 1-50% based on total formulation or pigment content.
Incorporation and Processing Instructions:
- For optimum performance, the additive should be added during the production process according to specific guidelines provided for each application.
BYK-9076 serves as an effective wetting and dispersing additive, improving the performance and properties of coatings, adhesives, PVC plastisols, resin systems, and thermoplastic compounds, especially when dealing with carbon black pigments and fiber wetting in SMC/BMC formulations.

BYK®-4512

BYK-4512 is an adhesion promoter specifically designed for solvent-borne systems applied to metal substrates. Here's a breakdown of its properties and applications:
Product Data:
- Composition: Solution of a polymer with functional groups.
- Typical Properties:
  - Amine value: 56 mg KOH/g
  - Density at 20 °C: 1.10 g/ml
  - Non-volatile matter (20 min., 150 °C): 60%
  - Solvents: Methoxypropylacetate
  - Flash point: 43 °C
Applications:
- Liquid Coatings:
  - Primarily used in coil coatings and industrial coatings applied directly onto metal or glass substrates.
Special Features and Benefits:
- Improved Adhesion: Enhances adhesion after water immersion and forming processes such as deep-drawing, T-bend, and corrosion resistance.
- Compatibility: Particularly suitable for use in chromate-free primers and on metal substrates pre-treated in a chromate-free manner.
- Binder Interaction: Reacts with melamine resins and polyisocyanates, cross-linking into the polymer matrix to improve adhesion.
- Versatility: Well-suited for use in 2K systems and baking coatings.
Recommended Use:
- Coil Coatings and Industrial Coatings: Particularly recommended for these applications.
Recommended Levels:
- Typically recommended at 1-4% additive (as supplied) based on the total formulation. Optimal dosage levels should be determined through testing.
Incorporation and Processing Instructions:
- The additive can be incorporated at any time during paint production with moderate shear forces.
BYK-4512 serves as an effective adhesion promoter, especially beneficial for enhancing adhesion in coil coatings and industrial coatings applied directly onto metal or glass substrates, particularly in chromate-free systems.

BYK®-4509

BYK-4509 is an adhesion promoter designed for use in both solvent-borne and aqueous coating systems applied to metallic substrates. Here's an overview of its key properties and applications:
Product Data:
- Composition: Salt of a polymer with acidic groups.
- Typical Properties:
  - Amine value: 29 mg KOH/g
  - Acid value: 29 mg KOH/g
  - Density at 20 °C: 1.11 g/ml
  - Non-volatile matter (10 min., 150 °C): 80%
  - Solvents: Methoxypropanol
  - Flash point: 45 °C
Applications:
- Coatings Industry:
  - Primarily used for improving adhesion to metallic substrates such as steel, galvanized steel, aluminum, and glass.
- Recommended Use:
  - Suitable for can coatings, coil coatings, industrial coatings, and protective coatings.
Special Features and Benefits:
- Strong Affinity to Metallic Substrates: The neutralized, acidic groups of BYK-4509 create a strong affinity to metallic substrates, enhancing adhesion.
- Compatibility: Compatible with most binders, making it ideal for universal use.
- Binder Interaction: Reacts with melamine resins and polyisocyanates, binding into the polymer matrix and improving adhesion.
- Versatility: Can be utilized in both aqueous and solvent-borne coatings.
- No Influence on Cross-linking: In solvent-borne, acid-catalyzed systems, BYK-4509 has no influence on cross-linking.
- pH Stability: Shows very good pH stability in aqueous systems.
Recommended Levels:
- Typically recommended at 1-4% additive (as supplied) based on the total formulation. However, optimal dosage levels should be determined through a series of tests.
Incorporation and Processing Instructions:
- The additive can be incorporated at any time during paint production with average shear forces.
- For multi-layer systems, BYK-4509 should be used in the layer directly applied onto the substrate to maximize adhesion.
BYK-4509 serves as a versatile adhesion promoter, particularly beneficial for enhancing the adhesion of coatings to metallic substrates across various industrial applications.

BYK®-3771

BYK-3771 is a silicone surface additive designed for use in solvent-free, radiation-curable, and solvent-borne coatings, adhesives, and printing inks. Here's a breakdown of its key features and applications:
Product Data:
- Composition: Polyether-modified, hydroxy-functional polydimethylsiloxane
- Typical Properties:
  - Density at 68°F: 8.60 lbs/US gal
  - OH value (solids): Approximately 45 mg KOH/g
Special Note:
- BYK-3771 is a low-cycle version of BYK-377, with a very low cyclic siloxane content (D4/D5/D6 < 0.1%), making it SVHC label-free.
Applications:
1. Coatings Industry:
  - Suitable for solvent-borne and solvent-free two-pack polyurethane systems, UV-curable coatings, polyester/melamine baking systems, and various aqueous systems.
2. Printing Inks:
  - Especially effective for overprint varnishes, flexographic inks, offset inks, and screen printing inks.
3. Adhesives & Sealants:
  - Primarily used in UV-crosslinking adhesive systems.
Special Features and Benefits:
- High Surface Activity: BYK-3771 accumulates on the coating surface and can be anchored in the polymer network, providing long-lasting effects.
- Surface Tension Reduction: Strong reduction in surface tension improves surface slip, substrate wetting, and tape release.
- Low Dosage: Even at low dosages, it significantly enhances substrate wetting and other properties.
- OH Functionality: Its OH functionality allows it to be incorporated into the adhesive matrix, improving wetting.
Recommended Use:
- Recommended for various coatings, printing inks, and adhesive systems where improved wetting and surface tension reduction are desired.
Recommended Levels:
- For coatings: 0.05-1% additive (as supplied) based on the total formulation.
- For printing inks and adhesives: Same dosage range as coatings.
Incorporation and Processing Instructions:
- The additive can be incorporated at any stage of the production process, including post-addition.
Special Considerations:
- In exterior coatings, weathering may remove the additive early on. Testing is recommended to ensure effectiveness.
- For coatings incorporating the additive via functional groups, proper sanding before recoating is essential for sufficient adhesion.
Overall, BYK-3771 offers a versatile solution for improving surface properties in coatings, printing inks, and adhesive systems, with its reactive functionality providing added benefits in various applications.

BYK®-3764

BYK-3764 is a solvent-free silicone surface additive formulated for use in aqueous, solvent-borne, and solvent-free coatings and adhesives. Here's an overview of this product:
Product Data:
- Composition: Polyether-modified polydimethylsiloxane
- Typical Properties:
  - Density at 20°C: 1.02 g/ml
  - Refractive index at 20°C: 1.440
Special Note:
- BYK-3764 is a low-cycle version of BYK-378, with a very low cyclic siloxane content (D4/D5/D6 < 0.1%), making it SVHC label-free.
Applications:
1. Coatings Industry:
  - Recommended for architectural coatings, automotive coatings, can coatings, general industrial coatings, leather coatings, wood and furniture coatings.
2. Adhesives & Sealants:
  - Suitable for common reaction adhesives based on polyurethane, epoxy, or acrylate.
Special Features and Benefits:
- Surface Slip Enhancement: BYK-3764 greatly increases surface slip, improving scratch resistance and avoiding fat edges (picture framing).
- Surface Tension Reduction: Causes a moderate to high reduction in surface tension, leading to excellent substrate wetting and a good anti-cratering effect.
- Foam Stabilization: Only stabilizes foam very slightly, maintaining recoatability and avoiding negative impacts on adhesion.
- Compatibility: Widely compatible with aqueous, solvent-borne, and solvent-free systems, and does not tend to effloresce.
Recommended Use:
- In coatings and adhesives where improved surface slip, substrate wetting, and leveling are desired.
Recommended Levels:
- For coatings: 0.01-0.3% additive (as supplied) based on total formulation, with exceptional cases up to 0.5%.
- For adhesives & sealants: Same dosage range as coatings.
Incorporation and Processing Instructions:
- The additive can be incorporated at any stage of the production process, including post-addition.
Overall, BYK-3764 offers significant benefits such as improved surface slip and substrate wetting, making it suitable for various coatings and adhesives applications in the industry.

BYK®-349

BYK-349 is a silicone surfactant designed for use in various aqueous coatings, adhesives, and maintenance products. Here's an overview of this product:
Product Data:
- Composition: BYK-349 consists of polyether-modified siloxane.
- Typical Properties:
  - Active substance: 100%
  - Density at 20°C: 1.04 g/ml
Special Note:
- BYK-349 is suitable for systems without organic co-solvents. However, its effectiveness may diminish in formulations with increased co-solvent quantities. In such cases, a polysiloxane like BYK-333 is recommended.
Applications:
1. Coatings Industry:
  - Recommended for automotive coatings, architectural coatings, wood and furniture coatings, industrial coatings, can coatings, coil coatings, and protective systems.
2. Adhesives & Sealants:
  - Highly effective in aqueous adhesive systems, improving wetting of critical substrates.
3. Care Products and Polishes:
  - Effective in aqueous maintenance products, improving substrate wetting and leveling. Particularly recommended for plasticizer-free floor care products and wax cleaning agents.
Special Features and Benefits:
- Surface Tension Reduction: BYK-349 significantly reduces the surface tension in aqueous systems, leading to improved substrate wetting and leveling.
- Foam Stabilization: It only marginally stabilizes foam, and recoatability is not impaired.
- Surface Slip: BYK-349 does not increase surface slip. However, it can be combined with polysiloxanes like BYK-333 if greater surface slip is desired.
Recommended Use:
- Recommended for all aqueous coatings, adhesives, and maintenance products, particularly those without co-solvents.
Recommended Levels:
- For coatings: 0.05-0.5% additive (as supplied) based on total formulation.
- For adhesives & sealants: 0.05-0.5% additive (as supplied) based on total formulation.
- For care products and polishes: 0.05-0.5% additive (as supplied) based on total formulation.
Incorporation and Processing Instructions:
- Preferably added to the finished formulation. However, it can be used at any stage during manufacture.
Overall, BYK-349 offers benefits such as improved substrate wetting and leveling without increasing surface slip, making it suitable for various aqueous coating, adhesive, and maintenance applications.