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New Class of Hydrophilic MDI Prepolymers for Industrial and Consumer Applications

机译：用于工业和消费者应用的新类亲水性MDI预聚物

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Hydrophilic polyurethane (PU) prepolymers have been commercialized by Dow under the trade name of HYPOL?. These hydrophilic prepolymers upon reaction with excess aqueous phase (water with surfactant, additives, compounds containing an active hydrogen, etc.) renders hydrophilic foams for applications such as bath sponges, facial sponges, ear plugs, horticulture, and wound dressings. Most of these applications require very good wet tear properties. Despite the limited wet tear properties of toluene diisocyanate (TDI) prepolymer foams, TDI prepolymers are still extensively used mainly due to the slow back end reactivity of methylene diphenyl diisocyanate (MDI) prepolymers. In this paper, we discuss and present new class of hydrophilic MDI prepolymers with improved back end reactivity that also retains the wet tear properties of typical MDI systems. A technical hypothesis was put forward, and new hydrophilic MDI prepolymers were synthesized at lab and pilot scale and validated for bath sponge, horticulture and comfort applications. Dow expects that development of these new hydrophilic MDI prepolymers can help fulfill the need for prepolymer systems with improved wet tear performance and productivity required for industrial and consumer applications.

机译：亲水性聚氨酯（PU）预聚物已根据HYPOL的商品名为陶氏？在用过量的水相（水与表面活性剂，添加剂，含有活性氢的化合物等）反应这些亲水性预聚物呈现的应用，如浴海绵，面部海绵，耳塞，园艺和伤口敷料的亲水性泡沫。大多数这些应用都需要非常好的湿撕裂性能。尽管甲苯二异氰酸酯（TDI）预聚物泡沫塑料的限制湿撕裂性能，TDI的预聚物仍广泛主要用于由于亚甲基二苯基二异氰酸酯（MDI）的预聚物的滞后端的反应性。在本文中，我们将讨论和本类新的亲水性MDI的预聚物的具有改进的后端的反应性也保持典型MDI体系的湿撕裂性能。一个技术假设被提出来的，在实验室和中试规模的合成和验证沐浴海绵，园艺和舒适应用新的亲水MDI预聚物。陶氏预计这些新的亲水MDI预聚体，发展可帮助实现与用于工业和消费应用需要改进的湿撕裂性能和生产率预聚物体系的需要。

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《Polyurethanes technical conference》|2015年||共16页
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YASMIN SRIVASTAVA; HELGE BRAUN; PHIL SHERIDAN; RAJAT DUGGAL; JAMES FACELLO;
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中图分类聚氨酯类（聚氨基甲酸酯类）及塑料;
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8. Development of a New Class of Fe-3Cr-W(V) Ferritic Steels for Industrial Process Applications [R] . 2005

机译：用于工业过程的新型Fe-3Cr-W（V）铁素体钢的开发

New Class of Hydrophilic MDI Prepolymers for Industrial and Consumer Applications

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