Integrated Polyurethane Article

摘要

This technology relates to an integrated article that includes (a) a flexible foam region and (b) a non-foam region. The flexible foam region and the non-foam region are each made of a polyurethane composition. In some embodiments, the flexible foam region is a midsole, and wherein the non-foam region is an outsole. The flexible foam region is made from a flexible polyurethane injection molded foam. The non-foam region is made from a non-foamed polyurethane, which may be extruded or thermoformed. The invention relates to this integrated article, as well as the methods of making and using the same.

主权项

1. An integrated article comprising (a) a flexible foam region; and (b) a non-foam region;
wherein said flexible foam region and said non-foam region comprise a polyurethane composition wherein the foamed polyurethane composition of said flexible foam region has a weight average molecule weight of 120,000 to 500,000, and a polydispersity (Mw/Mn) of 1.85 to 2.51; and wherein the non-foamed polyurethane composition of said non-foam region has a weight average molecule weight of 200,000 to 350,000, and a polydispersity (Mw/Mn) of 2.30 to 2.50.