POROUS POLYMER BLEND STRUCTURES
First Claim
1. A method of producing a porous polymer blend comprising:
- forming a liquid composition comprising at least two immiscible polymers dissolved in at least one common solvent;
subjecting the liquid composition to a reduction in temperature to cause the at least two immiscible polymers to phase separate into a common polymer rich phase and a common polymer poor phase;
solidifying the at least two immiscible polymers in the common polymer rich phase so as to avoid complete phase separation of the at least two immiscible polymers; and
removing the common polymer poor phase to provide a blend of the at least two immiscible polymers having a porous morphology.
2 Assignments
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Accused Products
Abstract
A porous polymer blend, and a method of producing a porous polymer blend from at least two immiscible polymers. The at least two immiscible polymer being blended together and exhibiting the absence of complete phase separation. The method of producing a porous polymer blend comprising: forming a liquid composition comprising at least two immiscible polymers dissolved in a common solvent; subjecting the liquid composition to a reduction in temperature to cause at least two immiscible polymers to phase separate into a common polymer rich phase and a common polymer poor phase; solidifying the at least two immiscible polymers in the common polymer rich phase so as to avoid complete phase separation of the at least two immiscible polymers; and removing the common polymer pore phase to provide a blend of the at least two immiscible polymers having a porous morphology.
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Citations
27 Claims
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1. A method of producing a porous polymer blend comprising:
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forming a liquid composition comprising at least two immiscible polymers dissolved in at least one common solvent; subjecting the liquid composition to a reduction in temperature to cause the at least two immiscible polymers to phase separate into a common polymer rich phase and a common polymer poor phase; solidifying the at least two immiscible polymers in the common polymer rich phase so as to avoid complete phase separation of the at least two immiscible polymers; and removing the common polymer poor phase to provide a blend of the at least two immiscible polymers having a porous morphology. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 27)
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- 25. A porous polymer blend comprising at least two immiscible polymers which do not form a homogeneous polymer mixture in the absence of a solvent, the at least two immiscible polymers being blended together and exhibiting the absence of complete phase separation.
Specification