Isodisperse Telechelic Polymers and Their Polyurethane Derivatives. SamplePreparation

摘要

Although the polydispersities of the samples are slightly different, they arewithin the limits given in our US Patent (bar-Mw/bar-Mn = 1.5 to 2.0). Due to the different molecular weights, every sample was prepared with a somewhat different polymerization recipe, the details were given in our previous 1st Interim Report (September 28, 1995, Contract No. N68171-95-C-9086). The No. 1. sample was handed personally by Prof. F. Tudos to dr. G. Hagnauer on July 6, this year, in Watertown. The No. 2. and No. 3. samples were sent by air mail on October 13, this year. The structures of the samples were characterized by FT-IR, (1)H-NMR and GPC investigations. The measurements are given graphically, their evaluations are summarized in the Table 1. The (1)H-NMR spectra of the samples were recorded by a Varian 400 type instrument. jg p1.