Ethylene Acrylic Acid Copolymer

SNP’s S-1900 series contains two ethylene – acrylic acid (EAA) copolymers products, which can be used in many different applications. SNP works as a team with the customer to determine the best product within the series to meet the desired properties and application needs. Learn more about our aqueous EAA products below, and contact us for more information.

Different Chemistries

SNP offers a wide range of chemistries. Some of the chemistries carried are polyurethane dispersion (S1400-L series), polyvinyl alcohols (S-1500-L series), and polyester emulsions (S-1600-L series). Each of these chemistries will have its own unique characteristics. The S-1400-L series will provide excellent abrasion and chemical resistance while the S-1600-L series provides water, oil and grease resistance, and FDA compliance. In certain instances, a product will need to have a combination of characteristics from a combination of two different types of chemistries.

Combination of Chemistries

SNP ethylene-acrylic acid copolymer (EAA) dispersions (S-1902-L and S-1903-L) are unique chemistries that adhere to many substrates including metal foil, paper, and packaging substrates. These copolymer dispersions provide properties of both ethylene (crystallinity, chemical, water, and moisture resistance) and acrylic acid (adhesion, polarity, toughness and strength) chemistries. Through the combination of these chemistries, EAA copolymers provide resistance to acid, oil and grease while providing excellent resistance to puncture, tear, and abrasion.

Difference between SNP EAA Products

As the percentage of acid co-monomer is increased in the product, the rigidity, chemical resistance, and MVTR properties of the product are increased. Both the S-1902-L and S-1903-L have a content of 20% acrylic acid. The difference between these two products is their melt index. The S-1903-L has a higher melt index, thus it has a higher solid content (30%) in comparison to the S-1902-L (Ts = 25%). The higher the melt index, the better the adhesion and optical properties while the lower melt index the better the toughness and environmental stress crack resistance (ESCR). Both SNP products exhibit good rigidity, moisture vapor resistance, and chemical resistance. A recap of the differences between the SNP S-1902-L and S-1903-L are listed below.

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S-1902-L

• 25% solids
• Lower melt index
• Better toughness and ESCR

S-1903-L

• 30% solids
• Higher melt index
• Better adhesion and optics

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Applications

• Print primer
• Adhesive including heat seal
• Heat seal additive
• Adhesion primer/additive
• Barrier coating