Non-cytotoxic polyurethane medical items
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United States of America Patent
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Feb 29, 2000
Grant Date -
N/A
app pub date -
Jul 31, 1998
filing date -
Jul 31, 1997
priority date (Note) -
Expired
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Abstract
Medical article of manufacture comprising compositions, comprising: at least one polyisocyanate, preferably a non-aromatic polyisocyanate, in the monomer or prepolymer state; at least one polypol; and at least one organic compound comprising one or more phosphite functional groups, in the proportion of at least 1% by weight with respect to the total weight of the polyol or polyols, this organic compound being, in addition, non-aromatic and the carrier of at least one free hydroxyl group capable of reacting with an isocyanato group; and, if appropriate, at least one catalyst of the polymerization reaction of a polyisocyanate and of a polyol.
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