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Luphen® MB 3644

Bio Mass Balance
version of Luphen® 3644, certified acording to Redcert².



3644 is a 50% aqueous dispersion of an aliphatic polyester polyurethane
elastomer. The formed film can be activated by heat at 60-65 °C enabling the
manufacture of heat-sealing adhesives. Luphen® 3644 has a limited hot-tack
life. With its balance of heat resistance and low activation temperature the
Luphen® 3644 is used in several application such as 3D furniture lamination,
interior trim and shoe sole attachment. The higher solid content gives more
flexibility for formulation and leads to an faster drying. Specially developed
water-emulsifiable, polyfunctional isocyanates such as Basonat® -types should
be added to adhesives formulated with Luphen® 3644 to improve the heat
resistance of the bond and its resistance to hydrolysis.