A carpet backing formulation for preparing a polyurethane-forming reactive mixture comprising an isocyanate-reactive mixture; a polyisocyanate and a filler

摘要

A continuous process for preparing formulations useful for making filled polymer carpet backings. The present invention particularly incorporates polyisocyanate as a reactive diluent in a continuous process for preparing filled polyurethane polymers. The use allows production of carpet backings that incorporate high loadings of filler materials. The process comprises simultaneously metering (a) an isocyanate-reactive material; (b) a polyisocyanate; and (c) a filler to a means for mixing (a), (b), and (c), wherein the means for mixing (a), (b), and (c) is a low-shear or no-shear mixer.