PMID 28776036. ^ The majority of polyurethanes are thermosets, on the other hand some thermoplastics are developed, For illustration spandex ^ PP&A stand for polyester, polyamide and acrylate polymers; all of that are used to make synthetic fibers. Care should be taken not to confuse it with polyphthalamide (PPA) ^I'm able to alter the temperature… Read More