Conformational analysis of the crystal s
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Chris W. Patterson; David Hanson; Antonio Redondo; Stephen L. Scott; Neil Henson
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Article
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1999
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John Wiley and Sons
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English
โ 354 KB
๐ 1 views
From conformational analysis, we have determined the two lowest energy crystal structures for the hard segments of 4,4ะ-diphenylmethane diisocyanate/1,4butanediol (MDI/BDO)-based polyurethane elastomer. Both crystal forms give prominent X-ray scattering at ฯณ7.6 ร . In one crystal form, (1), there is