Propylene carbonate as a source of carbonate units in the synthesis of elastomeric poly(carbonate-urethane)s and poly(ester-carbonate-urethane)s

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[1] Mazurek, Magdalena M.
[2] Parzuchowski, Pawel G.
[3] Rokicki, Gabriel
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Mazurek, M.M. (mmazurek@ch.pw.edu.pl) | 1600年 / John Wiley and Sons Inc卷 / 131期
关键词：
The synthesis of oligocarbonate diols from propylene carbonate (PC) and α,ω-diols with hydrocarbon chain of various length is presented and discussed. Syntheses with different catalysts and molar ratio of the reactants were performed. Novel method of the synthesis of oligo(ester-carbonate) diols based on PC, dimethyl succinate, adipate or terephthalate, and α,ω-diols was investigated. The resultant oligomerols did not contain any oxy-1,2-propylene fragments as well as other ether units in their chemical structure. Based on the obtained oligocarbonate and oligo(ester-carbonate) diols, polyurethanes were obtained according to the prepolymer method using isophorone and hexamethylene diisocyanate and water as a chain extender. The obtained products exhibited very good mechanical properties - tensile strength up to 50 MPa with 425% elongation at break [for PUR based on oligo(tetramethylene carbonate) diol] and 45 MPa, 625% [for (oligo(tetramethylene succinate-co-carbonate)diol with 44 mol % of carbonate units]. © 2013 Wiley Periodicals, Inc;
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