Polyurethanes are defined as those polymers which contain the characteristic linkage which may be considered a mixed amide-ester of carbonic acid. “Urethane polymers” have recently become of major commercial importance. However, they include not only homopolymers that fit the above definition, but copolymers both linear and crosslinked, in which the urethane linkage may actually constitute only a small part of the total number of linkage in the polymer chain.
No takes yet. Share an insight, caveat, or question.
Donald J. Lyman (1966) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: