Patent ID: 8299147
Filing Date: 2012-10-30
Classification: A61K,B32B,C08G,C09D,D06N,Y10T

Abstract:
1. A film comprising ionomers selected from the group consisting of polyurethane ionomers, polyurea ionomers, polyamide ionomers, polyester ionomers, or a mixture thereof wherein the ionomers comprise high content of covalent-bonded ionic groups of cationic, anionic, zwitterionic, or a mixture thereof, wherein the film comprises >100 milli-equivalents per 100 gram of ionomers, and <1 mole % of soft hydrocarbon polymers that have glass transition temperature lower than 25° C., wherein the soft hydrocarbon polymers are selected from a group consisting of polyalkylene oxide, polyethers, polyalkylene glycols, polyetherpolyesters and polyalkylenimine, wherein the film is moisture vapor permeable and chemical resistant to 2-chloroethyl ether with accumulated permeation rate of <25 microgram/cm 2 /day.