Porous polymer structures
US8222308B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Feb 11, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2201/052
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of preparing a porous polymer structure comprising the steps of: forming a liquid composition comprising at least one polymer dissolved in at least one solvent; subjecting the liquid composition to stress, and if necessary also to a reduction in temperature, to cause the liquid composition to form a bi-continuous phase separated composition, the bi-continuous phase separated composition comprising a polymer rich phase and a polymer poor phase; solidifying the at least one polymer in the polymer rich phase; and removing the polymer poor phase from the polymer rich phase to provide the porous polymer structure having a bi-continuous morphology from the polymer rich phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.