Patent ID: 8895052

Claim:
A polyurethane composition comprising a reaction product of: (a) an isocyanate group-containing component selected from the group consisting of lysine diisocyanate and esters thereof, lysine triisocyanate and esters thereof, and combinations thereof; and (b) an active hydrogen group-containing component comprising (i) at least one poly-hydroxy functional compound selected from the group consisting of a polyether polyols, polyester polyols, and polyhydroxyalkyl derivatives of C 3 -C 10 hydrocarbons and (ii) at least one mono-hydroxy functional compound selected from the group consisting of hydroxyalkylamines and alkyl alcohols, wherein the ratio of hydroxyl groups to isocyanate groups ranges from 0.521 to 0.85; wherein the composition is biodegradable, a solid at 22° C., and has pressure sensitive adhesive properties at a temperature of 37° C. and relative humidity of 100%.