COMPOSITIONS OF THERMOPLASTIC POLYURETHANE (TPU), POLYBUTADIENE AND POLYDIENE-BASED TPU

摘要

A composition comprising the following; A. A thermoplastic polyurethane (TPU) comprising less than 25 wt% of units derived from a diene; B. A polybutadiene and/or polyisoprene; and C. A polydiene-based TPU that comprises at least 30 wt% of units derived from a diene. Typically and preferably, the TPU of (A) docs not contain any units derived from a diene. These compositions can be cured into thermoplastic vulcanizates. Both the cured and uncured compositions are well-suited for promoting the adhesion between polar (for example, polyester, polycarbonate and polylactic acid) and non-polar materials, and for the manufacture of, among other things, films, fibers, sheets and tie layers, lubes, adhesives, dispersions, protective apparel, footwear, coatings, laminates and foams.