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Priority to JP57090499ApriorityCriticalpatent/JPS58208335A/ja
Publication of JPS58208335ApublicationCriticalpatent/JPS58208335A/ja
Publication of JPH0355487B2publicationCriticalpatent/JPH0355487B2/ja
Phase separating polyurethane prepolymers and elastomers prepared by reacting a polyol having a molecular weight of 600-3500 and isocyanate and a low molecular weight chain extender in which the ratios of reactants have a limited range