Catalyst-containing stable polyurethane forming compositions...

Details Catalyst-containing stable polyurethane forming compositions... Catalyst-containing stable polyurethane forming compositions...

C - Chemistry, Metallurgy

08

G

400/103, 182/13,

C08G 18/24 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01)

Patent

CA 1174399

ABSTRACT OF THE DISCLOSURE The present invention is directed to improve- ments in non-cytotoxic polyurethane compositions. The improvement in the polyurethane composition is achieved by reacting at least one NCO-terminated pre- polymer 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 applica- tions. 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 composi- tion.

366525

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