Abstract: The present disclosure is directed to compositions and methods that may be used for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. The compositions may include, for example, expandable cross linked polymeric microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 5,000 microns and a cross linking agent content of from about 100 to about 200,000 ppm of hydrolytically labile silyl ester or silyl ether crosslinkers and from 0 to about 300 ppm of non-labile crosslinkers.

Abstract: Multicomponent networks or membranes of the present invention have good mechanical properties that are permeable to water, hydrocarbons, and oxygen. The networks contain at least two and preferably at least three covalently combined domains, i.e., a hydrophilic, a lipophilic and an oxyphilic polymer segment, that give rise to a multicontinuous domain microstructure. At least one of these domains includes poly(ethylene glycol).

Abstract: Multicomponent networks or membranes of the present invention have good mechanical properties that are permeable to water, hydrocarbons, and oxygen. The networks contain at least two and preferably at least three covalently combined domains, i.e., a hydrophilic, a lipophilic and an oxyphilic polymer segment, that give rise to a multicontinuous domain microstructure. At least one of these domains includes poly(ethylene glycol).