Porous polymer blend structures
US8044108B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Aug 16, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2201/052
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.