Radiopaque compositions for visualization of medical devices

A medical device having at least one radiopaque surface, said radiopaque surface comprising:

• a polymeric composition having the formula
• wherein A is a substituted or unsubstituted aromatic or aliphatic or aliphatic group containing a radiopaque component and a functional group, said functional group being capable of forming a linkage with R1 and is selected from the group consisting of carboxyl, amino, hydroxyl, isocyanato and halo;
• R1 and R3 are different substituted or unsubstituted aliphatic or aromatic groups having from 1 to 20 carbons, and having at least two reactive ends being same or different, said reactive ends being selected from the group consisting of carboxyl, amino, hydroxyl, isocyanato, and halo;
• x is an integer from 1 to 1,000;
• n is an integer from 1 to 1,000;
• R2, R7, and R8 may be optionally present, and may be the same or different, substituted or unsubstituted groups selected from the difunctional groups consisting of diols, diamines, hydroxy acids, and amino acids;
• R4, R5, and R6 may be the same or different substituents selected from the group consisting of hydrogen, halogen, or a hydrocarbon chain having from 1 to 100 carbons;
• R9 is an optional chain extender containing at least two end groups being the same or different and selected from the group consisting of amino, hydroxyl, carbonate, anhydride, acyl chloride, and carboxyl;
• p is an integer from 1 to 100;
• q is an integer from 1 to 100.

A method of imparting a radiopaque polymeric coating to a surface of an article which comprises:

• a) contacting said surface with a radiopaque polymeric composition, said composition having the following formula:
• wherein A is a substituted or unsubstituted aromatic or aliphatic group containing a radiopaque component and a functional group, said functional group being capable of forming a linkage with R1 and is selected from the group consisting of carboxyl, amino, hydroxyl, isocyanato, and halo;
• R1 and R3 are different substituted or unsubstituted aliphatic or aromatic groups having from 1 to 20 carbons, and having at least two reactive ends being the same or different, said reactive ends being selected from the group consisting of carboxyl, amino, hydroxyl, isocyanato, and halo;
• x is an integer from 1 to 1,000;
• n is an integer from 1 to 1,000;
• R2, R7, and R8 may be optionally present, and may be the same or different, substituted or unsubstituted groups selected from the difunctional groups consisting of diols, diamines, hydroxy acids, and amino acids;
• R4, R5, and R6 may be the same or different substituents selected from the group consisting of hydrogen, halogen, or a hydrocarbon chain having from 1 to 100 carbons;
• R9 is an optional chain extender containing at least two end groups being the same or different and selected from the group consisting of amino, hydroxyl, carbonate, anhydride, acyl chloride, and carboxyl;
• p is an integer from 1 to 100;
• q is an integer from 1 to 100.