Dispercoll waterborne dispersions were designed for the formulation of high performance adhesives.
The Dispercoll line includes:
Dispercoll U - Aqueous, anionic dispersions of high molecular weight aliphatic polyurethanes.
Dispercoll C - Aqueous polychloroprene lattices for water-based-contact cements and foam laminating adhesives.
Dispercoll S - Anionic colloidal solutions of amorphous silicon dioxide aqueous polymers, for use with aqueous polymers such as Dispercoll C to improve rheology.
Dispercoll U dispersions are aqueous, anionic dispersions of high molecular weight aliphatic polyurethanes that do not contain co-solvents and offer performance comparable to solventborne polyurethanes. Key properties include:
• Good resistance to discoloration
• Water resistance
• Excellent adhesion to plasticized PVC, other plastics and most substrates
• Good heat resistance
• Compatibility with many compounding ingredients
The performance of Dispercoll U dispersions can be enhanced using Desmodur or Bayhydur water dispersible polyisocyanate crosslinkers.
Dispercoll C dispersions are aqueous polychloroprene lattices commonly used in the formulation of water-based-contact cements and foam-laminating adhesives. Adhesives based on Dispercoll C dispersions exhibit long open tack times, high initial strength and high heat resistance. They can be used as substitutes for solventborne contact adhesives.
Dispercoll S products are anionic colloidal solutions of amorphous silicon dioxide used with aqueous polymers, such as Dispercoll C dispersions, to provide improvement of rheology properties (thickening). Aqueous polymers also increase the film modulus in adhesive applications. Compounded adhesives containing Dispercoll S dispersions exhibit increased heat resistance and initial wet bond strength.