Patent ID: 11208524

Abstract:
An embodiment of the invention provides an anionic/non-ionic water based polymer comprising polyurethane and polyurea. The polymer is approximately 30 to 40 weight percent non-volatile and has a viscosity of between approximately 1400 and 1500 cps. Also provided is a method for producing an anion/non-ionic water based polyurethane/polyurea polymer, the method comprising heating dimethylolpropionic acid; combining the dimethylolproprionic acid with heated PEG to create a slurry; adding isophorone diisocyanate (IPDI) to the slurry to create a mixture; and heating the mixture in the presence of a catalyst. The prepolymer is then salted out after catalyst is added and reaction complete. This salted prepolymer is then added to ethylene diamine in water to chain extend and promote water solubility. Also provided is a film comprising the polymer.