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DOWSIL™ 74 Additive

Effective foam control in a variety of waterborne coatings and inks performs at low concentrations no hydrophobic particles. Stable under high shear mixing. Particularly for waterborne automotive base coat applications balancing effective foam control and good surface appearance.

Benefits:

  • 100% organomodified silicones 
  • Self-emulsifying 
  • Easy to incorporate at low shear 
  • Can be used neat or diluted in polar solvents
  • Compatibility with a wide variety of ink and OPV resins 
  • Very low use levels 
  • Excellent foam control during both manufacturing and processing 
  • Shear stability 
  • Continued performance even after long-term storage 
  • Prevent defects, even on filmic subtrates 
  • Compliant with U.S., European and certain local country regulations within Europe for food-contact applications 

Properties

These values are not intended for use in preparing specifications.

Typical Properties

  • Active Content Yes No 100 %
  • Aqueous Systems Yes No true
  • Benefit Yes No Foam Control
  • Cloud Point (1 wt% actives aqueous solution) Yes No < 0 °C
  • Color Yes No Clear colorless to tan hazy liquid
  • Dynamic Viscosity Yes No 750 Centipoise
  • Flash Point, Closed Cup Yes No > 100 °C
  • Performance Benefits Yes No Compatibility, Foam Control
  • Product Delivery Yes No Polymer
  • Refractive Index Yes No 1.435 to 1.445
  • Shelf Life Yes No 720 Days
  • Solventless Yes No true
  • Specific Gravity @ 25°C Yes No 1
  • Surface Tension (1% actives, 25 °C) Yes No 26.9 mN/m
  • System Yes No Water Borne
  • Target Formulation Yes No Water Borne

Additives for long-lasting, defect-free foam control in inks and overprint varnishes

Are you looking for a long-lasting foam control additive for your ink or overprint varnish (OPV) that performs during both the manufacturing and printing processes and does not cause surface defects, even on filmic substrates? Is storage stability a concern? Do you also need to meet regulatory requirements for various food-contact applications? Then consider DOWSIL™ 71 Additive and DOWSIL™ 74 Additive. These foam control agents provide excellent, long-lasting foam control at reduced use levels while maintaining the integrity of the coating, and they comply with U.S., European and certain local country regulations within Europe for food contact.

Unlike silicone emulsion products, DOWSIL™ 71 and 74 Additives are supplied as 100% organomodified silicones. They are low viscosity, surfactant-like compounds that self-emulsify and thus are easy to incorporate at low shear, while also avoiding any issues with emulsion instability. They are also highly effective in a wide range of acrylic resin formulations, providing excellent foam control at much lower use levels without causing cratering and other surface defects associated with silicone emulsions, even on non-absorbent filmic substrates.

Effective foam control at very low use levels 

With their unique organomodified silicone structure, DOWSIL™ 71 and 74 Additives provide excellent foam control at much lower use levels than competitive emulsion technology.

Figure 1: Performance of DOWSIL™ 74 Additive in a waterborne flexographic ink.

Graph: Performance of DOWSIL™ 74 Additive in a waterborne flexographic ink

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No Food Contact Letters are available online for this material
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DOWSIL™ 74 Additive
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DOWSIL™ 74 Additive
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