Polyurethane polyene compositions
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United States of America Patent
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Jan 29, 1985
Issued Date -
N/A
app pub date -
May 7, 1984
filing date -
Nov 12, 1980
priority date (Note) -
Expired
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Abstract
Shaped three-dimensional structures formed of polyurethane polyene compositions obtained by reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane resin. The resulting products will swell and increase in weight upon immersion in water and are permeable to gases, moisture vapor, ions, and other low molecular weight species. The hydrophilic polyurethane polyene compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory.
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