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Acronal® S 760 na is a self-crosslinking acrylic-styrene copolymer dispersion primarily used in aqueous anticorrosion paints and primers. Here's a breakdown of its key characteristics and applications based on the provided technical data sheet:

Chemical Nature

• Type: Self-crosslinking acrylic-styrene copolymer dispersion

Typical Properties

• Solids Content: 49.0 – 51.0% (by weight)
• pH: 8.5 – 10.0
• Viscosity at 23°C: 100 – 550 mPa·s (Brookfield RV, Spindle #4, 50 rpm)
• Apparent Viscosity: ~1000 mPa·s (Brookfield RVT, Spindle #2, 20 rpm)
• Density: ~1.05 g/cm³
• Film-Forming Temperature: ~22°C (72°F)
• Dispersion Type: Anionic
• Plasticizer Content: Free from plasticizer
• Sensitivity to Frost: Below 0°C (32°F)

Properties of the Film

• Density: ~1.05 g/cm³
• Mechanical Strength:
  • Tensile Strength: ~1800 psi (~12.8 N/mm²)
  • Elongation at Break: ~300%

Application

• Fields of Application: Ideal for use in direct to metal (DTM) primers, topcoats, and industrial maintenance paints.
• Key Features:
  • Offers flash rust resistance
  • Compatible with reactive pigments
  • Provides excellent long-term durability
  • Offers under-film corrosion protection

Processing

• Mixing: Formulated with dissolvers and bead mills.
• Sequence: Add ingredients in the correct sequence to optimize viscosity and minimize foam.
• Temperature Considerations: For application at lower temperatures, coalescents are recommended.
• Compatibility: Compatible with most anticorrosion pigments, including those derived from zinc borate and zinc phosphate.

Safety and Handling

• Safety Precautions: Follow standard chemical handling precautions.
• Storage: Store according to BASF's guidelines for polymer dispersions.

Haloflex™ 202, manufactured by DSM, is a vinyl acrylic copolymer latex primarily used in water-based adhesives. Here are the key details from its technical datasheet:

Product Type

• Acrylics & Acrylic Copolymers: Falls under the category of Vinyl Acrylics & Vinyl Acrylic Copolymers (VAC).

Chemical Composition

• Vinyl Acrylic Copolymer: This indicates it is a copolymer derived from vinyl acetate and acrylic acid or acrylic esters.

Physical Form

• Liquid: Haloflex™ 202 is supplied in liquid form.

Applications

• Adhesives: Specifically designed for use in water-based adhesives.

Properties

• Solids Content: 60% (w/w)
• Minimum Film Forming Temperature: 12°C
  • This is the temperature at which the latex forms a continuous film on a substrate.
• Sheen: Not specified in the provided information.
• Viscosity: 20 - 70 mPa-s at 25°C using a Brookfield viscometer.
  • Indicates the thickness or resistance to flow of the latex.
• pH: 1.5 (typically for the product, although this seems unusually low; it might be a typo or specific to a certain condition not fully described here).

Additional Features

• Barrier Properties: Provides good barrier properties against water vapor, oxygen, carbon dioxide, and radon.
• Salt Spray Resistance: Shows good resistance to salt spray.
• Chemical Resistance: Moderate resistance to chemical splash and spillage.

Availability

• Availability Not Confirmed: It's important to verify with DSM or an authorized distributor for current availability status.

Haloflex™ 202 is tailored to meet the requirements of water-based adhesive formulations, offering specific performance attributes such as barrier properties and chemical resistance, making it suitable for various adhesive applications where these properties are critical.