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BYK®-348

BYK-348 is a silicone surfactant designed for use in aqueous coatings, printing inks, overprint varnishes, and adhesives. Here's an overview of this product:
Product Data:
- Composition: BYK-348 consists of polyether-modified siloxane.
- Typical Properties:
  - Active substance: 100%
  - Density at 20°C: 1.06 g/ml
- Special Note: BYK-348 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:
- Suitable for use in coatings, printing inks, overprint varnishes, and aqueous adhesives.
Special Features and Benefits:
- Surface Tension Reduction: BYK-348 significantly reduces the surface tension of aqueous systems, leading to improved substrate wetting and leveling.
- Foam Stabilization: It only marginally stabilizes foam, and recoatability is not impaired.
- Surface Slip: BYK-348 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, printing inks, overprint varnishes, and adhesives, particularly for formulations without co-solvents.
Recommended Levels:
- For coatings, printing inks, and overprint varnishes: 0.05-0.5% additive (as supplied) based on the total formulation.
- For adhesives: 0.05-0.5% additive (as supplied) based on the total formulation.
Incorporation and Processing Instructions:
- Preferably added to the finished formulation, but can be used at any stage during manufacture.
Overall, BYK-348 offers benefits such as improved substrate wetting and leveling without increasing surface slip, making it suitable for various aqueous coating and adhesive applications.

BYK®-347

BYK-347 is a silicone surfactant designed for use in aqueous coatings, printing inks, and overprint varnishes. Here are the key details about this product:
Product Data:
- Composition: BYK-347 is composed of polyether-modified siloxane.
- Typical Properties:
  - Active substance: 100%
  - Density at 20°C: 1.02 g/ml
- Special Note: BYK-347 is suitable for systems that do not contain organic co-solvents. However, its effectiveness may decrease in formulations with increased quantities of co-solvents. In such cases, a polysiloxane like BYK-333 is recommended.
Applications:
- Suitable for use in coatings, printing inks, and overprint varnishes, particularly in formulations without co-solvents.
Special Features and Benefits:
- Surface Tension Reduction: BYK-347 significantly decreases the surface tension of aqueous systems, leading to improved substrate wetting and leveling.
- Foam Stabilization: It only minimally stabilizes foam, and recoatability is not affected.
- Good Substrate Wetting: BYK-347 exhibits good substrate wetting properties, especially with thin-layered application.
- Surface Slip: It does not increase surface slip. However, for applications requiring higher surface slip, it can be combined with a polysiloxane like BYK-333.
Recommended Use:
- Recommended for all aqueous coatings, printing inks, and overprint varnishes, particularly in formulations without co-solvents.
Recommended Levels:
- For coatings: 0.05-0.5% additive (as supplied) based on the total formulation.
- For printing inks: 0.1-1% additive (as supplied) based on the total formulation.
- Optimal dosage levels should be determined through laboratory tests.
Incorporation and Processing Instructions:
- Preferably added to the finished formulation, but can be added at any stage during manufacture.
Overall, BYK-347 offers benefits such as improved substrate wetting and leveling without increasing surface slip, making it suitable for various aqueous coating applications, especially those without co-solvents.

BYK®-346

BYK-346 is a silicone surfactant primarily designed for use in aqueous coatings, printing inks, and overprint varnishes. Below are the key details about this product:
Product Data:
- Composition: BYK-346 is a solution of a polyether-modified polysiloxane.
- Typical Properties:
  - Active substance: 52%
  - Density at 20°C: 1.00 g/ml
  - Non-volatile matter (10 min., 150 °C): 45%
  - Solvents: Dipropylene glycol monomethylether (48%)
  - Flash point: 81 °C
- Special Note: BYK-346 is a solution of BYK-345, with a small amount of co-solvent required (approximately 5% of the total solvent content) to avoid turbidity. Its effectiveness may decrease in systems with higher co-solvent amounts.
Applications:
- Suitable for use in coatings, printing inks, and overprint varnishes that contain a small proportion of organic co-solvent.
Special Features and Benefits:
- Surface Tension Reduction: BYK-346 significantly reduces surface tension in aqueous systems, leading to improved substrate wetting and leveling.
- Foam Stabilization: Minimal or no foam stabilization occurs, and recoatability is not affected.
- Surface Slip: It does not increase surface slip. However, for applications requiring higher surface slip, it can be combined with a polysiloxane such as BYK-333.
Recommended Use:
- Recommended for all aqueous coatings, printing inks, and overprint varnishes that contain a small proportion of organic co-solvent.
Recommended Levels:
- 0.1-1% additive (as supplied) based on the total formulation. Optimal dosage levels should be determined through laboratory tests.
Incorporation and Processing Instructions:
- Preferably added to the finished formulation, but can be added at any stage during production.
Overall, BYK-346 offers benefits such as improved substrate wetting and leveling without increasing surface slip, making it suitable for various aqueous coating applications.

BYK®-345

BYK-345 is a silicone surfactant designed for use in aqueous coatings, printing inks, and overprint varnishes. Here's an overview of its properties and characteristics:
Product Data:
- Composition: Polyether-modified siloxane.
- Typical Properties:
  - Density at 20°C: 1.04 g/ml
  - Active substance: 100%
- Special Note: BYK-345 is the solvent-free version of BYK-346 and requires a small amount of co-solvent (approximately 5% of the total solvent content) to avoid turbidity. Its effectiveness may decrease in systems with higher co-solvent amounts.
- Applications: Primarily used in coatings, printing inks, and overprint varnishes that contain a small proportion of organic co-solvent.
Special Features and Benefits:
- Surface Tension Reduction: BYK-345 significantly decreases surface tension in aqueous systems, leading to improved substrate wetting and leveling.
- Foam Stabilization: Minimal or no foam stabilization occurs, and recoatability is not affected.
- Surface Slip: It does not increase surface slip. However, for applications requiring higher surface slip, it can be combined with a polysiloxane such as BYK-333.
Recommended Use:
- Suitable for all aqueous coatings, printing inks, and overprint varnishes that contain a small proportion of organic co-solvent.
Recommended Levels:
- 0.05-0.5% additive (as supplied) based on the total formulation. Optimal dosage levels should be determined through laboratory tests.
Incorporation and Processing Instructions:
- Preferably added to the finished formulation but can be incorporated at any stage during production.
Overall, BYK-345 offers benefits such as improved substrate wetting and leveling without increasing surface slip, making it suitable for various aqueous coating applications.

BYK®-3410

BYK-3410 and BYK-DYNWET 800 are silicone-free surface additives designed for aqueous systems, particularly aqueous adhesives and sealants. Here's a breakdown of their key properties and features:
BYK-3410:
- Composition: Alcohol alkoxylates.
- Typical Properties:
  - Density at 20°C: 1.07 g/ml
  - Non-volatile matter: 77%
  - Flash point: > 100°C
- Recommended Levels: 0.2-1.2% additive (as supplied) based on total formulation.
- Incorporation and Processing Instructions: Can be incorporated during any stage of production, including post-addition.
- Special Features and Benefits:
  - Reduces surface tension.
  - Improves substrate wetting.
  - Stabilizes the curtain.
BYK-DYNWET 800:
- Composition: Alcohol alkoxylates.
- Typical Properties:
  - Density at 20°C: 0.97 g/ml
  - Non-volatile matter: > 83%
  - Flash point: > 100°C
- Recommended Levels: 0.2-1.2% additive (as supplied) based on total formulation.
- Incorporation and Processing Instructions: Can be incorporated during any stage of production, including post-addition.
- Special Features and Benefits:
  - Reduces the dynamic surface tension during fast application processes.
  - Improves substrate wetting.
  - Especially suited for curtain coatings with high line speeds, such as during the manufacturing of adhesive tapes (PSA).
Storage and Transportation: Separation or turbidity may occur for BYK-DYNWET 800 at temperatures below 15°C.
These additives offer benefits like reducing surface tension, improving substrate wetting, and stabilizing the curtain, making them suitable for various applications in the coatings and adhesive industries.

BYK®-3400

BYK-3400 is a silicone-containing substrate wetting additive designed for use in aqueous coatings, adhesives, and maintenance products to reduce surface tension. It enhances substrate wetting without increasing surface slip.
Key Properties and Features:
- Composition: Combination of interface-active substances.
- Active Substance: 70%
- Density: 1.08 g/ml at 20 °C.
- Solvents: Water.
- Special Features: Considerable reduction in surface tension, improving substrate wetting and leveling. Marginal effect, if any, on foam stabilization. Does not increase surface slip. Compatible with various aqueous systems.
Recommended Use and Levels:
- Coatings Industry: Recommended for aqueous coatings.
  - Recommended Levels: 0.5-2% additive (as supplied) based on total formulation.
- Adhesives & Sealants:
  - Recommended Levels: 0.5-2% additive (as supplied) based on total formulation.
- Care Products and Polishes:
  - Recommended Use: Particularly recommended for self-shine emulsions, wax cleaning agents, and semi-aqueous cleaning agents with a plasticizer content exceeding 5%.
  - Recommended Levels: 0.05-1% additive (as supplied) based on total formulation.
Incorporation and Processing Instructions:
- Preferable to add the additive to the completed formulation, but can be used at any stage during manufacture.
- Dilution with volatile plasticizer to 10% non-volatile matter is recommended prior to use in systems containing plasticizers.
Overall, BYK-3400 offers effective reduction in surface tension, improving substrate wetting and leveling across various aqueous systems without compromising foam stability or increasing surface slip.

BYK®-1789

BYK-1789 is a solvent-free, silicone-containing defoamer designed for use in aqueous, high build, and fast-drying coating systems and adhesives. It is particularly effective in improving air release and preventing microfoam formation.
Key Properties and Features:
- Composition: Polyether-modified polydimethylsiloxane with hydrophobic solids.
- Active Substance: 100%
- Density: 1.01 g/ml at 20 °C.
- Flash Point: > 120 °C.
- Special Features: Highly effective in water-borne coating systems, especially in fast-drying systems. Removes microfoam, particularly in high build coatings. Improves substrate wetting and is recommended for DTM (direct to metal) coatings. Suitable for use in aqueous epoxy systems. Shear stable, making it suitable for airless spray application. Demonstrates good compatibility and effectiveness in various systems, including ambient-curing acrylate systems.
Recommended Use:
- Marine and corrosion protection coatings: Especially recommended.
- General industrial coatings: Especially recommended.
- Architectural coatings: Recommended.
- Wood and furniture coatings: Recommended.
- Floor coatings: Recommended.
Recommended Levels:
- For coatings: 0.5-1.5% additive (as supplied) based on the total formulation.
- For adhesives & sealants: 0.1-1% additive (as supplied) based on the total formulation.
Incorporation and Processing Instructions:
- Can be incorporated in the mill base and the letdown stage.
- Sufficiently high shear forces must be applied during incorporation to ensure good distribution and prevent cratering.
Adhesives & Sealants Application:
- Effective defoamer for aqueous adhesives, preventing foam formation during production and application.
- Particularly recommended for aqueous acrylate and polyurethane adhesive systems.
Overall, BYK-1789 offers effective defoaming properties, improved air release, and substrate wetting, making it suitable for demanding aqueous systems in various applications within the coatings and adhesives industry.

BYK®-1760

BYK-1760 is an emission-free silicone and polymer-containing defoamer and air release agent suitable for use in solvent-borne and solvent-free coatings, adhesives, sealants, and casting resins. It is particularly recommended for epoxy resin systems.
Key Properties and Features:
- Composition: Solution of foam-destroying polymers and polysiloxanes.
- Epoxy Equivalent Weight: 250-320 g/eq%
- Density: 0.89 g/ml at 20 °C.
- Non-volatile matter: > 90% (after 10 minutes at 150 °C).
- Special Features: Highly effective in both solvent-borne and solvent-free systems, particularly in epoxy resin systems. Contains epoxy functional groups that facilitate incorporation into the polymer matrix, preventing migration. APEO-free and emission-free.
Recommended Use:
- Floor coatings: Especially recommended.
- Marine and protective coatings: Recommended.
- Thermosets: Specially developed for use in casting resins, reducing air bubbles and porosity.
- Adhesives & Sealants: Effective for solvent-borne and solvent-free systems, particularly in one-pack and two-pack epoxy resin systems.
Recommended Levels:
- For coatings: 0.1-1% additive (as supplied) based on the total formulation.
- For thermosets: 0.2-1.5% additive (as supplied) based on the total formulation.
- For adhesives & sealants: 0.1-1% additive (as supplied) based on the total formulation.
Incorporation and Processing Instructions:
- The additive can be added at any time during preparation, with sufficient shear forces to ensure good distribution.
- For casting resins, the additive can be added at any time, and high shear forces are recommended for incorporation.
Overall, BYK-1760 offers effective defoaming and air release properties, especially in epoxy resin systems, providing improved performance and reduced rejection rates in various applications.

BYK®-1630

BYK-1630 is a VOC- and APEO-free mineral oil defoamer designed for use in aqueous architectural coatings, general industrial coatings, floor coatings, adhesives, and sealants. It is formulated with a blend of paraffin-based mineral oils and hydrophobic components, including silicone.
Key Properties and Features:
- Composition: Blend of paraffin-based mineral oils and hydrophobic components, including silicone.
- Density: 0.88 g/ml at 20°C.
- Non-volatile matter: > 97% (after 10 minutes at 150°C).
- Flash point: > 100 °C.
- Special Features: Effective in aqueous systems and recommended for use in emulsion paints, plasters, floor coatings (especially aqueous epoxy top coats), and dispersion adhesives. APEO-free and contains small quantities of a compatible silicone to enhance defoaming action.
Recommended Use:
- Architectural coatings: Especially recommended.
- Floor coatings: Recommended.
- General industrial coatings: Recommended.
- Adhesives & Sealants: Effective for dispersion adhesives such as acrylate, polyurethane, and polyvinyl alcohol dispersions.
Recommended Levels:
- For coatings: 0.1-0.5% additive (as supplied) based on the total formulation, with exceptions up to 0.8%.
- For adhesives & sealants: 0.1-0.5% additive (as supplied) based on the total formulation.
Incorporation and Processing Instructions:
- Sufficiently high shear forces must be applied during incorporation to ensure good distribution of the defoamer and to prevent cratering.
Overall, BYK-1630 offers effective defoaming properties, compatibility with aqueous systems, and ease of incorporation, making it suitable for various applications in the coatings, adhesives, and sealants industries.

BYK®-1615

BYK-1615 is a VOC-free silicone-containing defoamer designed for use in aqueous architectural coatings and adhesives. It is formulated with a combination of hydrophobic solids, emulsifiers, and foam-destroying polysiloxanes. This defoamer is particularly suitable for emulsion systems with a high PVC (pigment volume concentration) of 60-85 and serves as a cost-effective alternative to mineral oil defoamers.
Key Properties and Features:
- Composition: Emulsion of hydrophobic solids, emulsifiers, and foam-destroying polysiloxanes.
- Density: 1.01 g/ml at 20°C.
- Non-volatile matter: 12.5% (after 10 minutes at 150°C).
- Carrier: Water.
- Special Features: Replaces mineral oil defoamers in highly filled emulsion paints with a PVC range of 60-85. It is VOC-free (< 1500 ppm) and does not contain alkylphenol ethoxylates.
Recommended Use:
- Coatings Industry: Typically used in highly filled emulsion paints with a PVC range of 60-85.
- Adhesives: Suitable for use as a defoaming agent in all aqueous emulsion adhesives.
Recommended Levels:
- Coatings: 0.1-0.5% additive (as supplied) based on total formulation, with exceptions up to 0.8%.
- Adhesives: 0.05-0.5% additive (as supplied) based on total formulation.
Incorporation and Processing Instructions:
- For coatings: Typically, 2/3 of the defoamer is added to the mill base, while 1/3 is added to the let-down or the finished paint. Incorporation can occur at any time during production.
- For adhesives: The additive can be added at any time during the production process at low to moderate shear forces.
Overall, BYK-1615 offers efficient defoaming properties, compatibility with various systems, and ease of incorporation, making it suitable for a wide range of applications in the coatings and adhesives industries.