<p>Polycup crosslinking resins are formaldehyde-free, water-based resins that are reactive with amine, carboxyl, hydroxyl and thiol functionality. They promote water resistance in polymer systems that are typically water-soluble or water-sensitive. Polycup resins are commonly used to produce filtration media, cellulose meat casings, adhesives, inks and top-coatings.</p>
<p>The environmentally friendly resins also impart toughness to formulations and improve adhesion to low surface energy substrates. They’re a safe and environmentally responsible alternative to traditional crosslinking resins; Polycup resins contain no formaldehyde, VOCs, APEs/NPEs or SARA 313 components. </p>
<p>Polycup resins provide benefits such as:</p>
<ul>
<li>Improved adhesion</li>
<li>Improved durability and strength</li>
<li>Enhanced flexibility</li>
<li>Greater water resistance </li>
</ul>
<h2>Application Considerations</h2>
<p>Polycup resins are available for industrial, indirect food contact and direct food contact applications. When you plan to use polymer resins, keep these considerations in mind:</p>
<ul>
<li>Polycup resins typically require temperatures from 80˚C to 150˚C for effective crosslinking; at lower temperatures, the resin requires longer time to set. </li>
<li>Resins work over a broad pH range, with optimum performance between pH 7 and pH 9.</li>
<li>You can extend the shelf life of formulas containing a Polycup resin by lowering the pH, temperature or Polycup resin concentration.</li>
<li>Typical dosage rates (dry basis) are 0.25 to 5 percent.</li>
<li>Add resin to well-agitated aqueous systems; to improve blending, pre-dilute with water using an in-line static mixer.</li>
</ul>
<h2>More Information</h2>
<p>To learn more about Polycup crosslinking resins, or if you would like free technical advice on your specific application, <a href="/en/contact/ask-expert/">ask a Solenis expert today</a>.</p>
