首页> 外文期刊>Journal of Applied Polymer Science >Chopping high-molecular weight poly(1,4-butylene carbonate-co-aromatic ester)s for macropolyol synthesis
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Chopping high-molecular weight poly(1,4-butylene carbonate-co-aromatic ester)s for macropolyol synthesis

机译:斩波高分子量聚(1,4-碳酸亚丁酯-共芳族酯)合成大分子多元醇

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摘要

The condensation of a mixture of dimethyl carbonate and phthalate derivatives with 1,4-butanediol (BD), catalyzed by sodium alkoxide, generated high-molecular weight poly(1,4-butylene carbonate-co-aromatic ester)s with molecular weights (Mn) of 50-120 kDa. The subsequent addition of polyols [BD, glycerol propoxylate, 1,1,1-tris(hydroxymethyl)ethane, or pentaerythritol] chopped these high-molecular weight polymers to afford macrodiols or macropolyols with facile control of their molecular weights (Mn, 2000-3000 Da) and unique chain topological compositions. Macropolyols prepared by chopping poly(1,4-butylene carbonate-co-terephthalate) were waxy in nature, whereas those containing isophthalate and phthalate units were oily. The macropolyols synthesized by this chopping method may have potential applications in the polyurethane industry. (C) 2016 Wiley Periodicals, Inc.
机译:在醇钠的催化下,碳酸二甲酯和邻苯二甲酸酯衍生物与1,4-丁二醇(BD)的混合物缩合,生成分子量为( Mn)为50-120 kDa。随后添加多元醇[BD,丙氧基甘油酯,1,1,1-三(羟甲基)乙烷或季戊四醇],将这些高分子量聚合物切碎,即可制得可容易控制分子量的大分子二醇或大分子多元醇(Mn,2000- 3000 Da)和独特的链拓扑组成。通过将聚(1,4-碳酸亚丁酯-对苯二甲酸对苯二甲酸酯)切碎而制备的大分子多元醇本质上是蜡状的,而含有间苯二甲酸酯和邻苯二甲酸酯单元的那些则是油性的。通过这种切碎方法合成的大分子多元醇在聚氨酯工业中可能具有潜在的应用。 (C)2016威利期刊公司

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