Bayer MaterialScience AG has unveiled four new thermoplastic polyurethanes (TPU): Desmopan grades DP 3055D, DP 3059D, DP 3065D and DP 3072D. They are based on esters and have been custom-made for injection moulding.

The new plasticiser-free products, which span hardnesses ranging from 55 to 72 Shore D, replace the TPU grades Desmopan 355, 356, 359, 365 and 372. Potential application areas include technical injection moulded items, shoe soles and heels, ski boot shells, rollers, castor coatings and gear knobs in cars.

“This development is our response to the growing demand for ester-based TPU grades that exhibit greater abrasion resistance and improved processing characteristics,” said Luigi Cermesoni, head of the company's Sports and Leisure TPU segment.

“Depending on application, design and component type, the new TPU products are up to 50% more abrasion-resistant than the previous grades. This makes the corresponding components far more wear-resistant and durable,” he added.