Mitsuaki Yamada

Synthesis and Properties of Polyurethanes Containing Phosphatidylcholine Analogues in the Side Chains

Abstract Several polyurethanes containing phosphatidylcholine analogues in the side chains were synthesized by reaction of oleyl-2-[N-(methyldiethanolammonium) ethyl phosphate (3a) or (p-onylphenyl)-2-[N-(methyldiethanolammonium) ethyl phosphate (3b) with diisocyanates such as 2,4-tolylene diisocyanate (TDI), 4,4′-methylene diphenyl diisocyanate (MDI), and m-xylylene diisocyanate (XDI), respectively. The new diols 3a and 3b were characterized by their IR and 1H-NMR spectral data and elemental analyses. Polyurethanes were characterized by their IR spectral data. Polyurethanes with properties similar to the usual polyelectrolytes are described.

Synthesis of polyurethanes bearing fluorene moieties

Several new polyurethanes bearing fluorene moieties were prepared by addition polymerization of bisphenoxyethanofluorene (BPEF) with diisocyanates such as hexamethylene diisocyanate (HDI), 2,4-tolylene diisocyanate (TDI), and m-xylylene diisocyanate (XDI), respectively. The resulting polyurethanes, BPEF-HDI (PU1), BPEF-TDI (PU2), and BPEF-XDI (PU3), have the number average molecular weight Mn of 11000, 9600, 14000 and intrinsic viscosities [η] of 0.142, 0.085, and 0.120 dL.g -1 , respectively. Moreover, all of the resulting polymers could form brittle transparent films.