Gas-permeable material with excellent compatibility with blood
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United States of America Patent
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Jul 7, 1992
Issued Date -
N/A
app pub date -
Oct 31, 1990
filing date -
Nov 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas-permeable material with excellent compatibility with blood comprising polyurethane, polyurethaneurea, or the derivatives thereof is provided. The polyurethane or polyurethaneurea is obtained from a composition that comprises diisocyanate; polysiloxane containing terminal hydroxyl groups; and polyol or polyamine containing at least one tertiary amino gorup. The derivatives of the polyurethane or polyurethaneurea is obtained by the following steps of: converting the tertiary amino groups contained in the polyurethane or the polyurethaneurea to quarternary ammonium groups, and treating the polyurethane or the polyurethaneurea having quarternary ammonium groups with heparin.
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