Patent ID: 9440000
Filing Date: 2016-09-13
CPC Classification: A61L,C08J,C08K,C08L

Claim Text:
1. A method of producing a phase invertible composition, said method comprising: combining: (a) a liquid substrate comprising a polyamine and a proteinaceous material in a weight ratio having a synergistic viscosity enhancing effect, the weight ratio of polyamine to proteinaceous material being about 1:10 to 40, wherein the combination of the polyamine and the proteinaceous material has a viscosity which is greater than that of either the polyamine or the proteinaceous material alone; and (b) a liquid crosslinking agent cause the polyamine and the proteinaceous material to crosslink to produce said phase invertible composition, wherein the polyamine and the proteinaceous material crosslink only in the presence of the crosslinking composition to form the phase invertible composition; wherein the phase invertible composition is exposed to radiation, wherein said substrate has a kinematic viscosity of about 70 to 200 centistokes and wherein the crosslinking agent comprises a reaction product of an excess of a liquid aldehyde crosslinking agent and a glycosaminoglycan.