An intensive world-wide effort to develop technology for manufacturing plastics from vegetable oil, rather then petroleum, has led researchers in Canada to a process for making polyurethane (PUR) ...

Polyurethane is a synthetic polymer material that has many uses in various industries. Polyurethane sheets are widely used for their durability, flexibility, and versatility. They come in different ...

For years the composite industry and its material suppliers have been working to develop pultruded composite sheet piles that could replace wood, steel and concrete structures in commercial sea walls, ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...