Patent ID: 9284429
Filing Date: 2016-03-15
CPC Classification: A61L,B05D,C08F,C08J,C09D,Y10T

Claim Text:
1. A porous organic polymeric film comprising a water-insoluble polymer that provides a continuous polymeric solid phase, and multiple discrete cavities having inner walls and that are uniformly dispersed within the continuous polymeric solid phase, wherein the porous organic polymeric film further comprises a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities, wherein the porous organic polymeric film further comprises an emulsifier having a hydrophilic-lipophilic balance value equal to or less than 6, which emulsifier is disposed at the interface of the multiple discrete cavities and the continuous polymeric solid phase of the porous organic polymeric film, and wherein the emulsifier is an amphiphilic block copolymer that comprises a hydrophilic segment comprising polyethyleneoxide and an oleophilic segment derived from a polyester, a polycarbonate, or a polyamide.