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Catalyst-containing stable polyurethane forming compositions which are non-cytotoxic when cured and separatory devices employing same
Catalyst-containing stable polyurethane forming compositions which are non-cytotoxic when cured and separatory devices employing same
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机译:含催化剂的,稳定的聚氨酯成型组合物,其固化后无细胞毒性,以及使用该组合物的分离装置
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摘要
The present invention is directed to improvements in non-cytotoxic polyurethane compositions. The improvement in the polyurethane compositions is achieved by reacting at least one NCO-terminated prepolymer and at least one polyol in the presence of a dialkyltin dicarboxylated catalyst composition. The catalyst reduces the curing time of the polyurethane resin and cannot be released therefrom. The improved polyurethane compositions are advantageously employed in separatory devices such as hollow fiber separatory devices intended to be used in biomedical applications. The separatory device employs at least one separatory membrane suitable for the intended end use application which is secured, potted or sealed in a housing using a cured flexible polyurethane composition.
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