AKTISIL® AM

SILRES® BS 168 is a silicone-based, water-soluble pH adjuster designed for use in waterborne emulsion paints. Here’s a detailed overview of what it is and its properties:

Product Overview:

• Brand: SILRES®
• Product Name: BS 168
• Type: Methylsiliconates
• Form: Water-based, solvent-free

Key Properties:

• Appearance: Clear to hazy, colorless liquid.
• Density: 1.4 g/cm³ at 25°C and 1013 hPa.
• Solids Content: 55 wt.% at 150°C for 1 hour.
• pH: 13 - 14 at 25°C (using indicator strips).
• Solvent: Water.

Benefits and Performance:

1. Storage Stability: Provides excellent stability in formulated paints.
2. pH Stability: Maintains pH stability, which is crucial for the longevity and performance of the paint.
3. Mechanical Resistance: Improves the mechanical resistance of the paint.
4. Water Resistance: Enhances the water resistance of the paint formulation.
5. Low VOC and Odor: Suitable for formulating low VOC (Volatile Organic Compounds) and low odor paints.

Applications:

• Auxiliary: Used as a pH adjuster in waterborne emulsion paints.
• Surface Treatment: Enhances paint performance by stabilizing pH, which contributes to better overall quality of the paint.

Application Details:

• Dilution: It is recommended to dilute SILRES® BS 168 with water before adding it to a formulation. A typical dilution ratio is 1 part SILRES® BS 168 to 3 parts water.
• Addition: Add the diluted product to the paint formulation while stirring to ensure even distribution and to avoid local high pH values.
• Dosage: The dosage should be adjusted based on the paint formulation and the desired pH level (e.g., 9.5 for standard paints). The optimal amount should be determined experimentally.

Packaging and Storage:

• Best Use Before: The product label will indicate the "Best use before" date. While storage beyond this date does not automatically render the product unusable, it's essential to verify the properties for quality assurance.

Portafill® G2 appears to be a specific grade within the Portafill® G series, which is a line of products characterized as iron-free, milled, amorphous calcium-aluminum silicates. Here's a breakdown based on the information provided:

Composition and Quality

• Material Type: Amorphous calcium-aluminum silicate, which means it lacks a clearly defined shape or form (non-crystalline).
• Quality Control: The product's consistency and quality are maintained under an ISO 9001 certified quality management system. This certification ensures that the product meets specific standards of quality in its production and supply.
• Purity: Notably free of iron and crystalline silica, which is crucial for applications requiring high purity and specific chemical properties.

Physical Properties

• Particle Size: Available in various grades (G25, G45, G75) with different mean particle sizes. For instance, G25 has a median diameter (D50) of 12 µm, indicating that 50% of the particles are below 12 µm.
• Oil Absorption: Relatively low, which can influence how it interacts with different mediums in paint or sealant formulations.
• Color: Exhibits a high lightness value (L* = 93), suggesting it is very light in color, beneficial for maintaining color integrity in applications.
• Moisture Content: Very low moisture content, which is good for stability and storage.
• pH: Neutral, which means it won't significantly alter the pH of mixtures it's added to.
• Density and Bulk Density: Fairly light with consistent density across different particle sizes, affecting its application in terms of volume and weight considerations.
• Hardness: A Mohs' scale hardness of 6 indicates it's relatively hard, useful for applications needing abrasive resistance.
• Refractive Index: At 1.55, which might be relevant in applications where light refraction is considered.

Chemical Analysis

• Main Components: Predominantly SiO2 (silicon dioxide) and CaO (calcium oxide), with a significant amount of Al2O3 (aluminum oxide). This composition contributes to its inertness and stability.
• Trace Elements: Very low in Fe2O3 (iron oxide), which confirms its iron-free claim, crucial for applications where iron content could be detrimental.

Applications

• Paints and Sealants: Its transparency, chemical inertness, and abrasive resistance make it ideal for these applications. The lack of crystalline silica also means lower health risks in applications producing dust.
• Composites: Used for enhancing dimensional stability and electrical properties, likely due to its particle size distribution and chemical composition.

Environmental Impact

• Sustainability: The mention of contributing to sustainable chemistry suggests that Portafill® G2 might be sourced or processed in an environmentally friendly manner, though specifics aren't provided.

In summary, Portafill® G2 and its variants are specialized fillers used in industries where the specific properties of particle size, chemical inertness, and physical stability are paramount. Its characteristics make it particularly valuable in high-end applications where material transparency, resistance to chemicals, and electrical properties are crucial.

AKTIFIT Q is an enhanced form of SILFIT Z 91, designed for use as an additive in various coating and resin systems. Here’s a detailed breakdown of its properties, applications, and benefits:

Description:

AKTIFIT Q is produced by modifying SILFIT Z 91 with methacrylic functional groups. This modification ensures that the functional groups are firmly attached to the filler surface, minimizing undesirable side effects that might occur with in-situ mixing. The material is produced to be highly hydrophobic and exhibits low moisture absorption, even under humid conditions.

Characteristics:

• Appearance: Free-flowing powder
• Color: CIELAB scale (L*: 96.2, a*: -0.1, b*: 1.0)
• Residue > 40 µm: 20 mg/kg
• Volatile Matter (at 105°C): 0.2%
• Density: 2.6 g/cm³
• Particle Size Distribution: D50 = 2 µm, D97 = 10 µm
• Surface Area (BET): 9 m²/g
• Oil Absorption: 65 g/100 g
• Equilibrium Moisture Content: Very low under various humidity conditions

Applications:

AKTIFIT Q is most effective in binder systems that polymerize or crosslink through radical-initiated reactions. It is particularly suitable for:

• UV or electron beam curing coatings and resins (including 3D printing SLAs)
• Unsaturated polyester and vinyl ester resins
• Acrylic and acrylated resins
• Moisture curing binder systems such as 1K polyurethanes and silane-terminated polymers (STP)

Benefits:

• Enhanced Opacity: Improves the hiding power of white pigmented coatings, potentially allowing for up to 20% replacement of titanium dioxide.
• Transparency: Provides clear coats with excellent transparency and minimal yellow tint.
• Mechanical Properties: Enhances scratch and abrasion resistance, stiffness, and impact strength.
• Chemical and Weather Resistance: Offers high resistance to moisture, chemicals, and weathering.
• Application Flexibility: Facilitates easy wettability and dispersion, often without requiring additional grinding.

Examples of Use:

• UV-curing clear coats and pigmented coatings
• UV-curing powder coatings
• Moisture-curing adhesives and sealants
• 3D printing in SLA process

Reaction in Binder Systems:

AKTIFIT Q interacts with binders, especially in the presence of radicals, to enhance the performance and properties of the coating or resin system.

In summary, AKTIFIT Q is a versatile additive designed to improve the functionality and performance of various coating and resin formulations, particularly those that rely on radical curing mechanisms. Its hydrophobic nature, combined with its high opacity enhancement and mechanical strength benefits, makes it valuable across a range of industrial applications, from automotive coatings to 3D printing resins.

SILLITIN Z 86 (PURISS) is a specialized functional filler primarily used in paint and varnish applications, characterized by its unique combination of corpuscular silica and lamellar kaolinite. Here's a detailed overview based on the technical datasheet:

Description

• Composition: Natural combination of corpuscular silica and lamellar kaolinite.
• Appearance: Free-flowing powder
• Color: CIELAB scale: L* 94.0, b* 9.5
• Residue > 40 µm: 20 mg/kg
• Volatile Matter at 105 °C: 0.5%
• Density: 2.6 g/cm³
• Particle Size Distribution:
  • D50: 1.9 µm
  • D97: 9.0 µm
• Surface Area BET: 12 m²/g
• Oil Absorption: 55 g/100 g
• Electrical Conductivity: 80 µS/cm
• Refractive Index (n): 1.55

Puriss Grade

• Additional Characteristics:
  • Very low residue > 40 µm (8 mg/kg)
  • Improved dispersion behavior

Applications

• Fields of Application:
  • Emulsion and silicate paints (both exterior and interior)
  • Industrial paints
  • Wood and foil coatings
  • Anti-corrosion coatings
  • Primers and fillers for the automobile industry
  • Sealing and embedding compounds
  • Electrophoretic paints

Benefits

• Functional Benefits:
  • High filling ratio
  • Outstanding dispersion behavior
  • Good pigment dispersion (spacer effect)
  • Low abrasiveness
  • Very low tendency to settle
  • Soft sediment
  • Good wet edge strength
  • Quick drying
  • Weathering resistance
  • Breathability
  • Scratch resistance
  • High abrasion resistance
  • Good transparency with a slight yellow tinge
  • Slight flatting effect
  • Complies with standards for basic foodstuffs (BfR and FDA)

Comparative Properties

• Comparison with Other Grades:
  • Viscosity: ●●
  • Yield Point: ●●
  • Sedimentation: ●●●●
  • Flatting: ●●●●

Particle Size Distribution and Rheology

• Measurement: Based on Fraunhofer diffraction spectrum using Mastersizer 3000.
• Sedimentation and Rheology: Demonstrates thixotropic properties suitable for various applications.

Additional Information

• Storage: Unlimited shelf life under proper dry conditions.
• Safety and Regulatory: Produced under rigorous manufacturing processes to meet quality and safety standards.

SILLITIN Z 86 (PURISS) is designed to enhance the performance and durability of coatings while meeting stringent requirements for dispersion, sedimentation, and rheology in various industrial applications.