Overall NCO/OH ratio and microphase sepa
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W. Nierzwicki
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Article
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1985
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John Wiley and Sons
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English
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Several polyurethanes were prepared from poldethylene adipate) glycol, 4,l'diphenylmethane diisocyanate (MDI), and 1,4-butanediol. The overall NCO/OH ratio was allowed to vary from 0.94 to 1.21. Thus, the obtained elastomers differed in the amount of allophanate groups and perfection of microphase s