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    Introducing the First Water-Based Liquid EPDM

    Lion Elastomers has developed a unique liquid ethylene propylene diene terpolymer (EPDM) designed specifically for water-based applications, including coatings, inks, adhesives, sealants, and caulks. Trilene® 65D is an EPDM dispersion with cross-linking functionality, good mechanical strength, and compatibility with various latex resins. EPDM has special properties derived from the saturated backbone structure and side-group unsaturation to enable cross-linking.

Trilene® 65D EPDM from Lion Elastomers

  • EPDM elastomer (ethylene propylene diene terpolymer)
  • 50/50 ethylene/propylene ratio (45% ethylene by weight)
  • Dispersed in water
  • 55% solids by weight
  • Adhesion and tackifying properties

Trilene® 65D EPDM Coating Applications 

  • Industrial Coatings
    • Primary binder or modifier for roofing, industrial maintenance, and institutional paints
  • Adhesives and Sealants
    • Binder or modifier in pressure-sensitive adhesives and industrial caulks
  • Inks and Overprint Varnishes
    • Modifier for laminating inks and overprint varnishes

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When used in coating applications, Trilene® 65D EPDM imparts:

  • Excellent UV, heat, oxidation, and chemical stability
  • Good mechanical strength
  • Enhanced durability
  • Zero volatile organic content (VOC)
  • Improved flexibility
  • Hydrophobic with low surface energy
  • Controllable viscosity at room temperature
  • Stable mechanical properties
  • Cross-linking capabilities with metal driers, peroxides, or UV light
  • Low-moisture permeability
  • Adhesion properties to a variety of surfaces

Physical Properties for Sample Coating Formulations using Trilene® 65D EPDM

    Property Method Result
    VOC (lb/gal) ASTM D3960 0.32
    Solids (wt%) ASTM D3960 48
    Specific gravity ASTM D1475 1.02
    Brookfield viscosity @ 25°C (cP) ASTM D2196 4,800
    Dry to touch (hrs) ASTM D1640 (8–16)
    Dry to handle (hrs) ASTM D1640 (16–24)
    Impact strength (in-lb) ASTM D2794 >90
    Crosshatch adhesion (CRS) ASTM D3359 5B
    Pencil hardness (7 day) ASTM D3363 3B

Sample coatings formulation


    Raw Material Function Weight (grams)
    Trilene® 65D Binder 350.23
    Ti-Pure™ R-706 TiO2 pigment 44.77
    Deionized water Solvent 68.53
    DISPERBYK® 2055 Wetting and dispersing aid 0.91
    SR350 Monomer 11.42
    Mineral spirits or VOC exempt solvent Solvent 19.03
    Ricon® 156 Homopolymer resin 3.81
    10% Cobalt Hydro-Cure® IV Primary drier 0.53
    12% Zirconium Hydro-Cem Secondary drier 0.76

Formulation Instructions

  1. Mix the deionized water, DISPERBYK® 2055, and Ti-Pure™ R-706 until well dispersed.
  2. Mix the mineral spirits, Ricon® 156, and SR350 until homogeneous.
  3. Add Trilene® 65D to the resin mixture.
  4. Combine the dispersed Ti-Pure and resin mixtures.
  5. Add 10% Cobalt Hydro-Cure® IV and 12% Zirconium Hydro-Cem last.

Formulation Notes

*a VOC-exempt solvent can be substituted for mineral spirits
† a peroxide like PEROXAN PIN can be added to make a 2K system and further accelerate cure time
‡ base formula is considered low VOC


Trilene® 65D EPDM offers desired properties for water-based coatings, adhesives, inks, caulks, and sealants. If you are interested in learning more or testing a sample, click to talk to an expert about how Trilene® 65D can work for your formulation. 


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