Liquid polyols, characterization

Liquid Polyols from Glucose Synthesis and Characterization. Liquid polyols were prepared from a-D-glucose (1) and the aglycon, a PTHF diol (2), by acid-catalyzed reactions under nitrogen at 130 °C in N-methyl pyrrolidone, NMP, solutions ( -0). 

Table I. Characterization Data of PTHF629m and PTHF629b Liquid Polyols...

NMP solvent and low acid contents. The liquid polyols thus prepared and characterized were then amenable for direct use in bulk polymerizations with MDI to form polyurethane materials. 

The hydrosilylation-allylation protocol is applicable to the syntheses of dendritic polyols . The hydroboration-oxidation of G0-G3 dendrimers prepared in accordance with the synthetic routes shown in Scheme 24 give the corresponding dendritic polyols, GO-OH-G3-OH, which are characterized by H NMR and MALDI-TOF analyses. Further modifications of the dendritic polyols with cholesteryl chloroformate yield unique dendrimers possessing 12, 36 and 108 cholesteryl units, providing the first examples of flexible dendrimers substituted with rigid mesogenic units that are expected to have unusual liquid crystalline properties . The second generation polyol dendrimer 264... 

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