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DuPont Elvax® 40W Ethylene-Vinyl Acetate Copolymer Resin
Categories: Polymer; Thermoplastic; Ethylene Vinyl Acetate; Ethylene Vinyl Acetate Copolymer (EVA), Adhesive/Sealant Grade

Material Notes: Elvax® 40W has a higher vinyl acetate content compared with the other Elvax® resins resulting in higher elongation, reduced hardness, improved solubility and adhesion, and significant differences in compatibility. To minimize viscosity changes in hot melt blends during processing, Elvax® 40W also contains butylated hydroxytoluene(BHT). Elvax®40W is supplied in pellet form and to prevent the pellets from blocking, low levels of an amide wax have been added to the polymer.

Typical Applications:

  • Laminating adhesives for a variety of substrates including plastics and films. This grade provides the extended open time often needed in industrial assembly
  • Lacquers for wood, metal, metal foils, paper, and films
  • Fabric and decal coatings
  • Heat-seal coatings for backing card stock used in blister packaging
  • Wood primers and sealers. Combinations of Elvax® 40W and nitrocellulose form the basis for wood sealers offering toughness and good intercoat adhesion
      Elvax® 40W is also suggested for use as a modifier in:
  • Elastomer-based hot melt and hot melt pressure-sensitive adhesion formulations
  • Natural and synthetic elastomers to improve resistance to ozone cracking
  • Caulks and sealants, including those based on asphalt
  • Asphalt road repairing compositions for resurfacing, patching, and crack sealing to improve low temperature flexibility, strength properties, and adhesion
  • Traffic paint formulations
  • Solvent-based and wax-based inks

Information provided by DuPont.

Vendors:
Available Properties
  • Density, ASTM D1505
  • Viscosity Measurement, Inherent, 0.25 g/100mL toluene
  • Vinyl Acetate Content, DuPont Method
  • Melt Index of Compound, ASTM D1238, modified
  • Hardness, Shore A, ASTM D2240, 10 seconds, Shore A-2
  • Tensile Strength at Break, ASTM D1708, Samples die cut from pressed films, gage dimensions 2.23cm x 0.47cm x 0.13cm, crosshead speed 2in/min
  • Elongation at Break, ASTM D1708, Samples die cut from pressed films, gage dimensions 2.23cm x 0.47cm x 0.13cm, crosshead speed 2in/min
  • Tensile Modulus, ASTM D638, Samples die cut from pressed films, gage dimensions 2.23cm x 0.47cm x 0.13cm, crosshead speed 2in/min
  • Ring & Ball Softening Point, ASTM E28
  
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Manufacturer Notes:
DuPont Packaging and Industrial Polymers

Category Notes
Plastic

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