Composition compatible with blood
First Claim
1. A composition compatible with blood prepared by ion exchange complexation of a polymer having quaternary ammonium groups with an alkali metal salt of a polyanion selected from the group consisting of heparin, chondroitin sulfate, dextran sulfate, and polyvinyl alcohol sulfate,wherein said polymer having quaternary ammonium groups is prepared by quaternizing a polymer containing tertiary amino groups with a quaternizing agent, andwherein the equivalent ratio, M/S, of alkali metal atoms (M) to sulfur atoms (S) in the composition is 0.4 or less.
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Abstract
A material compatible with blood obtained by heparinizing a polymer having quarternary ammonium groups with an alkali metal salt or an alkaline earth metal salt of heparin or the analog by ion exchange is provided. The equivalent ratio (M/S) of alkali metal atoms or alkaline earth metal atoms (M) in the heparin or the analog bonded to the polymer to sulfur atoms (S) in heparin or the analog bonded to the polymer is 0.4 or less.
97 Citations
21 Claims
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1. A composition compatible with blood prepared by ion exchange complexation of a polymer having quaternary ammonium groups with an alkali metal salt of a polyanion selected from the group consisting of heparin, chondroitin sulfate, dextran sulfate, and polyvinyl alcohol sulfate,
wherein said polymer having quaternary ammonium groups is prepared by quaternizing a polymer containing tertiary amino groups with a quaternizing agent, and wherein the equivalent ratio, M/S, of alkali metal atoms (M) to sulfur atoms (S) in the composition is 0.4 or less.
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7. A composition compatible with blood obtained by ion exchange complexation of a polymer having quaternary ammonium groups with an alkali metal salt of a polyanion selected from the group consisting of heparin, chondroitin sulfate, dextran sulfate, and polyvinyl alcohol sulfate,
wherein the polymer is a polyurethane or a polyurethaneurea obtained by quaternizing at least a part of the tertiary amino groups in the polymer with an alkyl halide having 1 to 10 carbon atoms, wherein the polyurethane or the polyurethaneurea is obtained by reacting a polyaminoetherpolyol that has at least two functional groups that react with isocyanato groups with a polyisocyanate, and wherein the polyaminoetherpolyol contains, as a diol component, at least 30 mol % of an amino alcohol represented by the structure ##STR8## wherein R1 and R3 are independently alkyl groups with 1 to 5 carbon atoms, and R2 is an alkyl groups with 1 to 15 carbon atoms, an aralkyl group with 7 to 15 carbon atoms, or an aryl group with 6 to 15 carbon atoms, wherein the total number of carbon atoms of two side chains bonded to a quaternary nitrogen atom of a polymer having quaternary ammonium groups is 5 to 16, in which one chain is bonded to a tertiary nitrogen atom of the polymer having tertiary amino groups and the other side chain is derived from the quaternizing agent, and wherein the equivalent ratio, M/S, of alkali metal atoms (H) to sulfur atoms (S) in the composition is 0.4 or less.
Specification