Polyureaurethanes having improved low temperature properties based on high molecular weight polyether intermediates
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United States of America Patent
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Jun 27, 1989
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N/A
app pub date -
Feb 8, 1988
filing date -
Feb 8, 1988
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Expired
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Abstract
Improved low temperature properties of polyureaurethane are obtained, such as low glass transition temperatures and reduced bending moduli at -400.degree. C., by the use of relatively high moleuclar weight polyether polyol intermediates. The polyureaurethane is made by reacting the polyether polyol intermediate with a diisocyanate and subsequent cure with a metal halide salt complex of methylenedianiline.
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