Patent ID: 8071663

Claim:
A medically acceptable formulation comprising (i) a polyisocyanate macromer or mixture of macromers of the following formula wherein f is two or more; â€œaâ€ is one to five and R 1 is where the ethylene oxide portion of R 1 may be linear or branched, d is a real number ranging from 0 to 5 and c may range from 1 to 100; R 2 is where R 3 is a linear or branched residue of a water soluble polymer that is capable of forming ester linkages to R 4 , and urethane linkages to R 1 when â€œaâ€ is one or more; and R 4 is a linear or branched organic residue capable of having â€œxâ€ carboxylate end-groups where 2â‰¦xâ‰¦6 and (ii) bio-absorbable desiccant comprising a hygroscopic and/or hydrophilic polymer or derivatives thereof or combinations thereof, wherein the desiccant comprises poly (vinyl pyrrolidinone) having a molecular weight between about 5,000-100,000.