发明名称 |
Radiopaque polyurethanes. |
摘要 |
<p>This invention relates to radiopaque polyurethane compositions that are reaction products of (a) cycloaliphatic diisocyanates; (b) at least one polyester, polycarbonate, and/or polyester carbonate diol having a molecular weight of from about 1000 to about 6000; (c) an isocyanate-reactive bromine-containing aromatic chain extender; and (d) optionally, a catalyst; wherein the quantity of component (c) is such that the amount of bromine in the polyurethane composition is from 10 to 35% by weight, and wherein the components are reacted at an isocyanate index of from 0.95 to 1.2.</p> |
申请公布号 |
EP0606832(A2) |
申请公布日期 |
1994.07.20 |
申请号 |
EP19940100004 |
申请日期 |
1994.01.03 |
申请人 |
BAYER CORPORATION |
发明人 |
SARPESHKAR, ASHOK M.;MARKUSCH, PETER H. |
分类号 |
A61L29/06;C08G18/38;C08G18/66;C08G18/75;(IPC1-7):C08G18/65 |
主分类号 |
A61L29/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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