Composite filtration membranes and methods of preparation thereof
US8727135B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2010 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Oct 28, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition comprises a crosslinked poly(meth)acrylate comprising two or more poly(meth)acrylate backbones covalently linked to a bridging group, the backbones comprising i) respective first repeat units, each of which comprises a first side chain ester moiety comprising a hydrophilic poly(alkylene oxide) chain segment, ii) respective second repeat units, each of which comprises a second side chain ester moiety directly linked to the bridging group through a linking group selected from the group consisting of carbamate groups, urea groups, and thiocarbamate groups, and iii) respective third repeat units, each of which comprises a hydrophobic side chain moiety not directly linked to any bridging group. Composite filtration membranes having a selective layer that comprises the composition exhibit useful anti-fouling and/or salt rejection characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.