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Coatings Ingredients
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Coatings Ingredients
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DOWSIL™ 18 Additive

Technical Datasheet | Supplied by Dow
DOWSIL™ 18 Additive by Dow is a non-reactive, high-molecular-weight, polydimethyl siloxane dispersion containing no volatile solvent. Imparts slip, mar-resistance and anti-blocking properties. Shows compatibility with acrylic, alkyd, epoxy, polyester, polyurethane and vinyl. DOWSIL™ 18 Additive provides "hand" to leather, "wet look" to fabric coatings and reduced friction as well as wear to castable urethanes. DOWSIL™ 18 Additive is used in solvent-based paints, water-based wood coatings- & flexographic inks, and high-solids & solvent-less inks. It is effective at low concentrations ranging from 0.05 to 0.5 weight percent or as high as 1.0 to 3.0 weight percent based on total formulation. It has a shelf life of 21 months.

DOWSIL™ 18 Additive

Technical Datasheet | Supplied by Dow
Product Type
  • Scratch / Scrub / Mar Resistance Agents > Silicone-based
  • Anti-blocking Agents > Silicones / Silicas / Siloxanes
Chemical Composition
Polydimethylsiloxane dispersion
CAS Number
63148-62-9
Physical Form
Paste, Viscous
Appearance
White
Product Status
COMMERCIAL
Applications/ Recommended for
  • Coatings > Solventborne
  • Coatings > Waterborne
  • Inks > Water-based
  • Resins > Polyesters
  • Resins > Polyurethanes (PU)
  • Resins > Vinyls
  • Resins > Acrylics & Acrylic Copolymers
  • Resins > Alkyd Resins
  • Resins > Epoxies
  • Inks > Varnishes / Over print varnish
  • Inks > Flexographic inks
  • Coatings Markets > Wood & Furniture Coatings
Bio Based
No

DOWSIL™ 18 Additive Properties

Property

Value & Unit
Test Condition
Test Method
Non-volatile content
100 %
Specific gravity @ 25°C
0.93
Flash point, closed cup
168 °C

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