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专利名称：Polyurethane elastomers, method of
producing them and their use
发明人：Wilhelm Oppermann,Frank Hermanutz,Peter
Hirt,Michael Schweizer,Oliver Oess
申请号：US09051351申请日：19980515公开号：US058866B1公开日：20021001
摘要：The invention concerns a polyurethane elastomer containing structural units oftype (a), in which: the group —O—R—O—is a macrodiol group with a molecular weight ofapproximately 500 to 10000, Ris a bivalent aliphatic, cycloaliphatic and/or aliphatic-cycloaliphatic group; and X is a short-chain olefinically unsaturated group, Y is NH or O, nis an integer from 1 to 10 and m is an integer of at least 4. The invention also concerns amethod of preparing this polyurethane elastomer which can be melt-spun to form fibresor melt-extruded to form foils. The fibres or foils can be exposed to energy-rich radiationsuch that crosslinking of the polyurethane occurs. Fibres according to the inventiondisplay superior properties in terms of textile-mechanical properties, in particular goodtensile strength, elongation at tear, residual elongation and heat distortion temperature.
申请人：RHODIA S.A.
代理机构：Bucknam and Archer
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