PMID 28776036. ^ Virtually all polyurethanes are thermosets, having said that some thermoplastics may also be developed, By way of example spandex ^ PP&A stand for polyester, polyamide and acrylate polymers; all of that are used to make synthetic fibers. Care should be taken never to confuse it with polyphthalamide https://harlanr000rme2.newsbloger.com/profile