Hydrophilic nanoporous materials
US8785111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2009 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Dec 9, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2353/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present application discloses a method for preparing and rendering hydrophilic a nanoporous material of a polymer matrix which has a porosity of 0.1-90% (v/v), such that the ratio between the final water absorption (% (w/w)) and the porosity (% (v/v)) is at least 0.05, the method comprising the steps of: (a) preparing a precursor material comprising at least one polymeric component and having a first phase and a second phase; (b) removal of at least a part of the first phase of the precursor material prepared in step (a) so as to leave behind a nanoporous material of the polymer matrix; (c) irradiating at least a part of said nanoporous material with light of a wave length of in the range of 250-400 nm (or 200-700 nm) in the presence of oxygen and/or ozone. Corresponding hydrophilic nanoporous materials are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.