Compositions and methods useful in selectively modifying the internal and external surfaces of porous polymer beads
US9931457B2 · kind B2 · utility
0Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2012 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Feb 9, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns polymer systems comprising at least one polymer with a plurality of pores where the polymer is initially functionalized on substantially all surfaces followed by a stepwise surface specific functionalization such that a different functional group resides on the external or internal pore surface of the bead. The invention also concerns use of such polymer systems in blood, blood product, or physiologic fluid purification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.