title: Polyurethane elastomers as maxillofacial prosthetic materials.
abstract: A series of polyurethane elastomers based on an aliphatic diisocyanate and a polyether macroglycol was polymerized with various cross-link densities and OH/NCO ratios. Stoichiometries yielding between 8,600 and 12,900 gm/mole/crosslink and an OH/NCO ratio of 1.1 resulted in polymers with the low modulus, yet high strength and elongation necessary for maxillofacial applications.
mesh_terms: D002072:Butylene Glycols; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004548:Elasticity; D008447:Maxillofacial Prosthesis; D008970:Molecular Weight; D011140:Polyurethanes / Q000138:chemical synthesis; D011407:Propane / Q000031:analogs & derivatives; D013718:Tensile Strength
chemical_list: D002072:Butylene Glycols; D011140:Polyurethanes; D011407:Propane