화학공학소재연구정보센터
Journal of Polymer Science Part A: Polymer Chemistry, Vol.45, No.21, 4965-4973, 2007
Synthesis and thermal Crosslinking of oxazolidine-functionalized polyurethanes
A new oxazolidine derivative was obtained from phenol, 2-amino-2methylpropane-1,3-diol and paraformaldehyde. The reaction of this novel oxazolidine diol with phenylisocyanate lead to a urethane model compound which can be polymerized thermally by oxazolidine ring opening to give a Mannich bridge structure. Linear segmented polyurethanes were prepared by reaction of different ratios of oxazolidine diol and commercial polyethylenglycol (M-w similar to 400) with 4,4'-methylenbis (cyclohexylisocyanate) (HMDI, 90% isomers mixture). The polyurethanes were thermally characterized and crosslinked by oxazolidine ring opening to obtain materials which showed improved thermal stability. (c) 2007 Wiley Periodicals, Inc.